新手关于ajax+servlet的问题

最近小弟在学习ajax,就随便做了一个ajax请求servlet并返回结果的小测试,但是一直调不通,一直是“网页上有错误”,看了一下XMLHttpRequest的值,一直是0。这是怎么回事啊?那位高手请指点一下,不胜感激!!!!!

希望实现功能:通过URL请求把参数传给ajaxServlet类处理,并显示处理结果!

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
                <title>My JSP 'index.jsp' starting page</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    
    <script type="text/javascript">
    var xmlHttp;

    function createXMLHttpRequest()
    {
        try{
            xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        catch(e)
        {
            try{
                xmlHttp = new XMLHttpRequest();
            }
            catch(e)
            {
                xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
            }
        }
    }

    function startRequest()
    {
        createXMLHttpRequest();
                        xmlHttp.onreadystatechange = handleXMLHttpRequest;
        xmlHttp.open("GET",basePath+"servlet/ajaxServlet?username=pangbo&password=19871201",true);
        send(null);
    }

    function handleXMLHttpRequest()
    {
            if(xmlHttp.readyState==4)
            {
                    if(xmlHttp.state==200)
                    {   
                        alert(xmlHttp.responseText());
                    }
            }
    }
    
</script>
  </head>
  
  
  <body>
   <input name="submit" value="提交" type="submit" onclick="startRequest()"/>
  </body>

</html>

 ajaxServlet类:

package com.ac.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.*;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ajaxServlet extends HttpServlet{
    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    public void init(ServletConfig config) throws ServletException
    {
        super.init(config);
    }
    public void doGet(HttpServletRequest request,HttpServletResponse response) throws IOException,ServletException
    {
        String username = request.getParameter("username");
        String password = request.getParameter("password");
        String responseText = username+"的密码是"+password+"请牢记!!!!";
        
        PrintWriter out = response.getWriter() ;
        out.println(responseText);
        
        out.close();
    }
}

web.xml(应该没有配错)

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
    <servlet-name>ajaxServlet</servlet-name>
    <servlet-class>com.ac.servlet.ajaxServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>ajaxServlet</servlet-name>
    <url-pattern>/servlet/ajaxServlet</url-pattern> 
  </servlet-mapping>
</web-app>

  

3个回答

你的startRequest方法有点问题,
最后一句send(null);有问题。楼上说的是错误的。

应该改成:xmlHttp.send(null);

你试一下吧。

这是我一年前写过的Demo,你对比一下看看:

var request = false;
function getXMLHttpRequest() {
try {
request = new ActiveXObject("MSXML2.XMLHTTP");
}
catch (e) {
try {
request = new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e1) {
request = false;
}
}
if (!request && typeof XMLHttpRequest != "undefined") {
request = new XMLHttpRequest();
}

return request;

}
function sendRequest(url, paramer, method, back) {
getXMLHttpRequest();
request.onreadystatechange = back;
if (method == "get") {
request.open(method, url + "?" + paramer, true);
request.send(null);
} else {
if (method == "post") {
request.open(method, url, true);
request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
request.send(paramer);
}
}
}

[/code]

好像是这两行代码
[code="java"]
xmlHttp.onreadystatechange = handleXMLHttpRequest;
xmlHttp.open("GET",basePath+"servlet/ajaxServletusername=pangbo&password=19871201",true);

[/code]
顺序颠倒了,应该改成:
[code="java"]
xmlHttp.open("GET",basePath+"servlet/ajaxServletusername=pangbo&password=19871201",true);

xmlHttp.onreadystatechange = handleXMLHttpRequest;
[/code]

用Jquery 多爽啊,一句话的事,

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Stack trace of request processing thread:[ org.springframework.context.event.AbstractApplicationEventMulticaster.getApplicationListeners(AbstractApplicationEventMulticaster.java:191) org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:134) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:409) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) org.springframework.web.servlet.FrameworkServlet.publishRequestHandledEvent(FrameworkServlet.java:1141) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1023) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) javax.servlet.http.HttpServlet.service(HttpServlet.java:660) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:491) org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:748)] 08-Mar-2020 19:21:22.963 ���� [main] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [ROOT] is still processing a request that has yet to finish. This is very likely to create a memory leak. You can control the time allowed for requests to finish by using the unloadDelay attribute of the standard Context implementation. Stack trace of request processing thread:[ java.io.WinNTFileSystem.canonicalize0(Native Method) java.io.WinNTFileSystem.canonicalize(WinNTFileSystem.java:428) java.io.File.getCanonicalPath(File.java:618) org.apache.catalina.webresources.AbstractFileResourceSet.file(AbstractFileResourceSet.java:90) org.apache.catalina.webresources.DirResourceSet.getResource(DirResourceSet.java:101) org.apache.catalina.webresources.StandardRoot.getResourceInternal(StandardRoot.java:281) org.apache.catalina.webresources.Cache.getResource(Cache.java:62) org.apache.catalina.webresources.StandardRoot.getResource(StandardRoot.java:216) org.apache.catalina.webresources.StandardRoot.getClassLoaderResource(StandardRoot.java:225) org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:2241) org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:833) org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1278) org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1138) java.lang.Class.forName0(Native Method) java.lang.Class.forName(Class.java:348) com.sun.beans.finder.ClassFinder.findClass(ClassFinder.java:103) com.sun.beans.finder.InstanceFinder.instantiate(InstanceFinder.java:93) com.sun.beans.finder.InstanceFinder.find(InstanceFinder.java:66) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:748)] 08-Mar-2020 19:21:22.969 ���� [main] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [ROOT] is still processing a request that has yet to finish. This is very likely to create a memory leak. You can control the time allowed for requests to finish by using the unloadDelay attribute of the standard Context implementation. Stack trace of request processing thread:[ org.springframework.context.event.AbstractApplicationEventMulticaster.getApplicationListeners(AbstractApplicationEventMulticaster.java:191) org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:134) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:409) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) org.springframework.web.servlet.FrameworkServlet.publishRequestHandledEvent(FrameworkServlet.java:1141) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1023) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) javax.servlet.http.HttpServlet.service(HttpServlet.java:660) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:491) org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:748)] 08-Mar-2020 19:21:22.984 ���� [main] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [ROOT] is still processing a request that has yet to finish. This is very likely to create a memory leak. You can control the time allowed for requests to finish by using the unloadDelay attribute of the standard Context implementation. Stack trace of request processing thread:[ org.springframework.context.event.AbstractApplicationEventMulticaster.getApplicationListeners(AbstractApplicationEventMulticaster.java:191) org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:134) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:409) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) org.springframework.web.servlet.FrameworkServlet.publishRequestHandledEvent(FrameworkServlet.java:1141) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1023) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) javax.servlet.http.HttpServlet.service(HttpServlet.java:634) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:491) org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:748)] 08-Mar-2020 19:21:22.987 ���� [main] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [ROOT] is still processing a request that has yet to finish. This is very likely to create a memory leak. You can control the time allowed for requests to finish by using the unloadDelay attribute of the standard Context implementation. Stack trace of request processing thread:[ org.springframework.context.event.AbstractApplicationEventMulticaster.getApplicationListeners(AbstractApplicationEventMulticaster.java:191) org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:134) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:409) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) org.springframework.web.servlet.FrameworkServlet.publishRequestHandledEvent(FrameworkServlet.java:1141) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1023) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) javax.servlet.http.HttpServlet.service(HttpServlet.java:660) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:491) org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:748)] 08-Mar-2020 19:21:22.995 ���� [main] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [ROOT] is still processing a request that has yet to finish. This is very likely to create a memory leak. You can control the time allowed for requests to finish by using the unloadDelay attribute of the standard Context implementation. Stack trace of request processing thread:[ org.springframework.context.event.AbstractApplicationEventMulticaster.getApplicationListeners(AbstractApplicationEventMulticaster.java:191) org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:134) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:409) org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) org.springframework.web.servlet.FrameworkServlet.publishRequestHandledEvent(FrameworkServlet.java:1141) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1023) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) javax.servlet.http.HttpServlet.service(HttpServlet.java:660) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:491) org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:748)] 08-Mar-2020 19:21:22.998 ���� [main] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [ROOT] appears to have started a thread named [mysql-cj-abandoned-connection-cleanup] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.lang.Object.wait(Native Method) java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:144) com.mysql.cj.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:85) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) 08-Mar-2020 19:21:23.018 ��Ϣ [main] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["http-nio-8080"] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcess![图片说明](https://img-ask.csdn.net/upload/202003/08/1583673409_243459.png) orBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) ![图片说明](https://img-ask.csdn.net/upload/202003/08/1583673431_759386.png) 之前都好好的,莫名其妙就不行了。白色部分用ajax请求查询数据,统计人数,绿色和蓝色部分是几个统计图,之前都没问题,突然就报错了。下面是页面转换的代码和统计人数的代码(白色部分): ![图片说明](https://img-ask.csdn.net/upload/202003/08/1583673520_970977.png)![图片说明](https://img-ask.csdn.net/upload/202003/08/1583673530_529970.png) ``` 下面附上配置文件的代码:applicationContext.xml: <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"> <!-- 配置扫描包 --> <context:component-scan base-package="com.clgc.service"></context:component-scan> <!-- 加载配置文件 --> <bean id = "dbConfig" class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer"> <property name="locations"> <array> <value>classpath:db.properties</value> </array> </property> </bean> <!-- 配置数据库连接池 --> <bean id = "dataSource" class = "com.alibaba.druid.pool.DruidDataSource"> <property name="driverClassName" value="${jdbc.driverClassName}"></property> <property name="url" value="${jdbc.url}"></property> <property name="username" value = "${jdbc.username}"></property> <property name="password" value="${jdbc.password}"></property> </bean> <!-- spring整合mybatis(将mybatis的核心sqlSessionFactory交给spring管理) --> <!-- 1,配置sqlSessionFactory --> <bean id = "sqlSessionFactory" class = "org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"></property> <!-- 自动扫描mapping.xml文件 --> <property name="mapperLocations" value ="classpath:mapper/*.xml"></property> </bean> <!--2,将sqlSessionFactory交给spring mapperScanner --> <bean class = "org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> ``` ``` <!-- 指定批量生产那个包中的mapper ,DAO接口所在包名,Spring会自动查找其下的类 --> <property name="basePackage" value="com.clgc.dao"></property> </bean> <!-- 配置事务管理器 --> <bean id = "txManager" class = "org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref = "dataSource"></property> </bean> <!-- 增加spring对事务的支持 --> <tx:annotation-driven transaction-manager="txManager"/> <!--启动注解--> <context:annotation-config/> </beans> ``` ``` applicationContext-Controller.xml: <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd"> <!-- 将控制器所在包加入容器 --> <context:component-scan base-package="com.clgc.controller"></context:component-scan> <!-- 配置试图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/views/"></property> <!--前缀: --> <property name="suffix" value=".jsp"></property> <!-- 后缀: --> <!--Controller中的方法中,返回值是/views/xxx.jsp 如Controller中的welcome,会返回/views/success.jsp --> </bean> <!-- mvc基础配置,标配 --> <mvc:annotation-driven></mvc:annotation-driven> <mvc:default-servlet-handler /> </beans> ``` ``` web.xml: <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> ``` ``` <welcome-file-list> <welcome-file>/views/index.jsp</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.jsp</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <display-name>PersonManager</display-name> <!-- Spring和mybatis的配置文件 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <!--Spring监听器--> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 编码过滤器 --> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <async-supported>true</async-supported> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 防止Spring内存溢出监听器 --> <listener> <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class> </listener> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>/resources/*</url-pattern> </servlet-mapping> ``` ``` ``` ``` <!--Spring MVC servlet--> <servlet> <servlet-name>SpringMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext-Controller.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> <async-supported>true</async-supported> </servlet> <servlet-mapping> <servlet-name>SpringMVC</servlet-name> <!-- 此处可以可以配置成*.do,对应struts的后缀习惯 --> <url-pattern>/</url-pattern> </servlet-mapping> </web-app> ``` 求求各位大神帮帮忙,百度了好久了,找到问题所在。 好像是数据库查询的问题,今天我把主页的js代码全部注释了 ,新建了一个ajax,当自己设置一组值返回的时候没问题,但是一涉及到数据库查询,就不行了 ![图片说明](https://img-ask.csdn.net/upload/202003/09/1583724656_836612.jpg) ![图片说明](https://img-ask.csdn.net/upload/202003/09/1583724724_674167.png)

JSP搜索联想框,新手求指教。

不是用的SSH框架,DAO用JDBC,项目赶工,DAO和Service整合在了一起,我是半路插入的~各位大神先别吐槽……咱先把问题解决再美化~谢谢 页面结构如下 ``` <input name="accountName" id="accountName" class="yhgl_ser required inputElem" onkeyup="getLinkData();" value="<%StringHelper.filterHTML(out, request.getParameter("accountName"));%>" /> <div id="popup" style="position: absolute;"> <table width="100%" bgcolor="#fffafa"> <tbody id="popupBody"></tbody> </table> </div> ``` JS代码如下(借鉴了很多网上的JS方法) ``` <script type="text/javascript"> function getLinkData() { var popupDiv = document.getElementById("info");//获得对应的div对象 var popupBody = document.getElementById("popupBody");//获得对应的tbody对象 var linkDataProperty = document.getElementById("accountName"); //获得对应的输入框对象 clearModels();//清除联想输入提示框的内容 //利用ajax获取后台的模糊查询的数据,并且封装成下拉列表的形式展现出来 $.ajax({ type : "post",//提交的方法为post //对应的Action提交的路径 url : "<%configureProvider.format(out, URLVariable.SEARCH_ACCOUNT);%>", data:{linkDataProperty:linkDataProperty.value},//从前台传递到后台的查询语句的参数 dataType : "json", //从Action中返回的数据的类型为json类型的 error:function(){ alert("没有对应的数据,请查看输入的查询条件!"); }, success : function(data) {//当Ajax提交成功时调用的方法 if(data.length==0){return;} setOffsets();//设置联想输入下拉列表提示框的位置 var tr,td,text; for (var i = 0; i < data.length; i++) {//根据返回的值,手动的拼tbody的内容 text = document.createTextNode(data[i].linkDataProperty);//从Action中返回的数据中取出linkDataProperty的值 td = document.createElement("td");//创建一个td的对象 tr = document.createElement("tr");//创建一个tr的对象 td.mouseOver = function(){this.className="mouseOver;"}; td.mouseOut = function(){this.className="mouseOut;"}; td.onclick = function(){populateModel(this)};//单击td是的方法为populateModel td.appendChild(text); tr.appendChild(td); popupBody.appendChild(tr); } }}); //点击下拉列表中的某个选项时调用的方法 function populateModel(cell) { clearSelect(); linkDataProperty.value = cell.firstChild.nodeValue; //initOtherData(linkDataProperty.value);利用输入框中的数据调用其他方法,初始化其他数据 clearModels();//清除自动完成行 } //清除自动完成行,只要tbody有子节点就删除掉,并且将将外围的div的边框属性设置为不可见的 function clearModels() { while (popupBody.childNodes.length > 0) { popupBody.removeChild(popupBody.firstChild); } popupDiv.style.border = "none"; } //设置下拉列表的位置和样式 function setOffsets() { var width = linkDataProperty.offsetWidth;//获取linkDataProperty输入框的相对宽度 var left = getLeft(linkDataProperty); var top = getTop(linkDataProperty) + linkDataProperty.offsetHeight; popupDiv.style.border = "black 1px solid"; popupDiv.style.left = left + "px"; popupDiv.style.top = top + "px"; popupDiv.style.width = width + "px"; } //获取指定元素在页面中的宽度起始位置 function getLeft(e) { var offset = e.offsetLeft; if (e.offsetParent != null) { offset += getLeft(e.offsetParent); } return offset; } //获取指定元素在页面中的高度起始位置 function getTop(e) { var offset = e.offsetTop; if (e.offsetParent != null) { offset += getTop(e.offsetParent); } return offset; } } //清空输入框中的数据 function clearSelect() { var linkDataProperty=document.getElementById(linkDataProperty); linkDataProperty.value=""; } </script> ``` Servlet代码如下 ``` protected void processPost(HttpServletRequest request, HttpServletResponse response, ServiceSession serviceSession) throws Throwable { //往后传数据 System.out.println("进入servlet,将传入后台:"+request.getParameter("accountName")); //获得DAO服务 ZhglManage manage = serviceSession.getService(ZhglManage.class); //获得前台数据并往后台发送,同时接收返回的结果 String accounts = manage.searchAccountInOneResult(request.getParameter("accountName")); //往前端发送 PrintWriter out = response.getWriter(); System.out.println("返回servlet,即将返回获得的结果:"+accounts+" 给页面"); out.print(accounts); out.close(); } ``` DAO加Service代码如下: ``` public String searchAccountInOneResult(String inputing) throws Throwable { //尝试了Gson但也没成功 Gson gson = new Gson(); System.out.println("进入DAO,传入的参数是:"+inputing); //map方式 Map<String, String> rsMap = new HashMap<String,String>(); String account = ""; String key = ""; //获得连接 Connection conn = getConnection(); //准备SQL语句,获得单列账号信息 String sql = "SELECT @ROW := @ROW +1 AS ROW , t.F02 AS accountName FROM S61.T6110 t, ( SELECT @ROW :=0 )r WHERE t.F02 LIKE '"+inputing+"%' LIMIT 10"; PreparedStatement pstm = conn.prepareStatement(sql); //执行SQL ResultSet rs = pstm.executeQuery(); //获得结果 while(rs.next()){ //map方式 key = rs.getString("accountName"); account = rs.getString("accountName"); rsMap.put(key, account); } String temp = gson.toJson(rsMap); System.out.println("正在打印gson:"+temp); return temp; } ``` 然后控制台是这样的 进入servlet,将传入后台:1 进入DAO,传入的参数是:1 正在打印gson:{"12342@qq.com":"12342@qq.com","12344@qq.com":"12344@qq.com","100@qq.com":"100@qq.com"} 返回servlet,即将返回获得的结果:{"12342@qq.com":"12342@qq.com","12344@qq.com":"12344@qq.com","100@qq.com":"100@qq.com"} 给页面 firefox控制台和页面效果是这样的 ![图片说明](https://img-ask.csdn.net/upload/201505/18/1431943341_591979.png) 我对JS什么的不怎么懂,来请教下各位我哪里有问题,解决方法或者说解决思路应该是怎样的

怎么能 一次添加多条数据

我是个新手,我是在做一个网站的购物车,数据是显示在GridView里面的,当一个用户在点击结算的时候,给数据库的一个订单表添加用户选定的商品数据。 怎么可以一次添加多条数据啊 急 急 急 求各位大神帮助一下 跪求 sql语句

SpringMvc 事务无法回滚

我模拟了一个更新和添加操作,添加一个主键重复的用户。按理说添加失败,更新就要回滚。但是事务无法回滚。网上找了好多资料,大部分都是说扫描包时applicationContext.xml和spring-mvc.xml,中包不要重复扫描,排除spring-mvc.xml扫描的Service。但是我怎么改,事务依旧无法回滚,希望大哥们帮帮我这个新手。代码如下 applicationContext.xml ``` <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <context:annotation-config/> <context:component-scan base-package="com.ali.zyh"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <bean id="placeholderConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations"> <list> <value>classpath:properties/jdbc.properties</value> </list> </property> </bean> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="url" value="${url}"/> <property name="username" value="${username}"/> <property name="password" value="${password}"/> <property name="driverClassName" value="${driverClass}"/> </bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="mapperLocations" value="classpath:mapping/*.xml"/> </bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.ali.zyh.dao"/> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> </bean> <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="add*" propagation="REQUIRED" read-only="false" /> <tx:method name="delete*" propagation="REQUIRED" read-only="false" /> <tx:method name="update*" propagation="REQUIRED" read-only="false" /> <tx:method name="save*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.Exception"/> </tx:attributes> </tx:advice> <tx:annotation-driven transaction-manager="transactionManager"/> <aop:config> <aop:pointcut id="pc" expression="execution(* com.ali.zyh.service.*.*(..))"/> <aop:advisor advice-ref="txAdvice" pointcut-ref="pc"/> </aop:config> </beans> ``` spring-mvc.xml ``` <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <context:annotation-config/> <context:component-scan base-package="com.ali.zyh" > <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service"/> </context:component-scan> <mvc:annotation-driven /> <!--避免IE执行AJAX时,返回JSON出现下载文件 --> <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> </list> </property> </bean> <mvc:annotation-driven> <mvc:message-converters register-defaults="true"> <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> <value>application/json</value> </list> </property> <property name="features"> <list> <value>WriteMapNullValue</value> <value>QuoteFieldNames</value> </list> </property> </bean> </mvc:message-converters> </mvc:annotation-driven> <!-- 启动SpringMVC的注解功能,完成请求和注解POJO的映射(适配器) --> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"> <property name="messageConverters"> <list> <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>application/json;charset=UTF-8</value> <value>text/plain;charset=UTF-8</value> </list> </property> </bean> </list> </property> </bean> <!-- 定义跳转的文件的前后缀 ,视图模式配置 (视图渲染器)--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/webapp/jsp"/> <property name="suffix" value=".jsp"/> </bean> <!-- 文件上传配置 --> <bean class="org.springframework.web.multipart.commons.CommonsMultipartResolver" id="multipartResolver"> <!--默认编码--> <property name="defaultEncoding" value="UTF-8"/> <!--上传文件的大小限制--> <property name="maxUploadSize" value="32505856"/> <!--内存中的最大值--> <property name="maxInMemorySize" value="4096"/> </bean> </beans> ``` web.xml ``` <web-app> <display-name>zyh</display-name> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:/spring/applicationContext.xml</param-value> </context-param> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>classpath:/properties/log4j.properties</param-value> </context-param> <listener>      <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>  </listener> <servlet> <servlet-name>SpringMvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!--contextConfigLocation配置springMvc的配置文件(也就是适配器,映射器)--> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>SpringMvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> ``` Service层代码 ``` @Service public class UsersService { @Autowired UsersDao usersDao; public void addUsers(Users users) { usersDao.addUsers(users); } public void deleteUsers(String id) { usersDao.deleteUsers(id); } public void updateUsers(Users users) { usersDao.updateUsers(users); } public Users getUsers(String id) { return usersDao.getUsers(id); } } ``` Controller代码 ``` @ResponseBody @RequestMapping(value = "/getOrders",method = RequestMethod.GET) public Object getOrders(String user_id){ Users u = usersService.getUsers(user_id); u.setUsername("aaa"); Users users = new Users(); users.setId("2222"); users.setUsername("事务大哥我错了"); users.setPassword("1111111123"); usersService.updateUsers(u); usersService.addUsers(users); return Msg.OK(); } ```

2019 AI开发者大会

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