servlet报错 一个用户登录页面

报错提示:HTTP method GET is not supported by this URL

jsp代码:
<%@ 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">











用户名:


密 码:


      





注册新用户



servlet代码:
package mysqlConnect;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;

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

import com.mysql.jdbc.Connection;
import com.mysql.jdbc.Statement;

public class loginServlet extends HttpServlet {

/**
 * 
 */
private static final long serialVersionUID = 1L;

/**
 * Constructor of the object.
 */

/**
 * Destruction of the servlet. <br>
 */
@Override
public void destroy() {
    super.destroy(); // Just puts "destroy" string in log
    // Put your code here
}

/**
 * The doGet method of the servlet. <br>
 *
 * This method is called when a form has its tag value method equals to get.
 * 
 * @param request the request send by the client to the server
 * @param response the response send by the server to the client
 * @throws ServletException if an error occurred
 * @throws IOException if an error occurred
 */


/**
 * The doPost method of the servlet. <br>
 *
 * This method is called when a form has its tag value method equals to post.
 * 
 * @param request the request send by the client to the server
 * @param response the response send by the server to the client
 * @throws ServletException if an error occurred
 * @throws IOException if an error occurred
 */
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    @SuppressWarnings("unused")
    String  resMsg;
    response.setContentType("text/html");
    PrintWriter out = response.getWriter();
    String username = request.getParameter("username"); // 从 request 中获取名为 username 的参数的值  
    @SuppressWarnings("unused")
    String password = request.getParameter("password"); // 从 request 中获取名为 password 的参数的值 
    try {

            try {
                Class.forName("com.mysql.jdbc.Driver");
            } catch (ClassNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

        //连接到数据库bookstore
        Connection connection =(Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/bookstore  acterEncoding=utf-8");
        //通过连接创建statement  
        Statement statement =(Statement) connection.createStatement(); 
        ResultSet rs=statement.executeQuery("select * from userlist where =用户名'"+username+"'");
        if(!("username").equals(rs)){ // 如果用户名不存在   
            resMsg = "该用户名不存在,请检查后重新登录或注册新用户";  
            out.println("<a href='login.jsp' style='font-size:30px;color:red'>返回登录</a>");
        } else{
             response.sendRedirect("bookshow.jsp");
            }
    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }finally{
        // add this section
    }




    out.println("");
    out.flush();
    out.close(); 

}

/**
 * Initialization of the servlet. <br>
 *
 * @throws ServletException if an error occurs
 */
@Override
public void init() throws ServletException {
    // Put your code here
}

}

5个回答

loginServlet缺少doGet方法

你URL想请求servlet的get方法。要么改成post请求。要么在sevrlet里面加doget

在sevrlet里面加上doGet方法 就行 了

Connection connection =(Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/bookstore acterEncoding=utf-8");
这里只加URL,不加用户名密码吗?
ResultSet rs=statement.executeQuery("select * from userlist where =用户名'"+username+"'");
这个sql写的没错? where 用户名 = username

在loginServlet加doget方法~

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抛的错误在上面,麻烦各位给分析分析,谢谢!
想把用户名存在session中 在方法中加request参数后运行报错 求指教~
我用的是spring+hibernate~ 修改后: public class LoginAction extends SimpleFormController{ private Login login; private String viewPage; private String successPage; //实现onSubmit()方法 public ModelAndView onSubmit(Object command,HttpServletRequest request) throws Exception { //强制转换成User User user = (User)command; Map model = new HashMap(); //进行登录的业务逻辑处理 getLogin().login(user); //存放消息 request.getSession().setAttribute("userName", user.getUsername()); model.put("user", user); model.put("userId", user.getId()); model.put("msg", getLogin().getMsg()); if ("登录成功".equals(getLogin().getMsg())) { //返回到登录成功的页面 return new ModelAndView(getSuccessPage(), model); } return new ModelAndView(getViewPage(), model); } 修改前: public class LoginAction extends SimpleFormController{ private Login login; private String viewPage; private String successPage; //实现onSubmit()方法 public ModelAndView onSubmit(Object command) throws Exception { //强制转换成User User user = (User)command; Map model = new HashMap(); //进行登录的业务逻辑处理 getLogin().login(user); //存放消息 model.put("user", user); model.put("userId", user.getId()); model.put("msg", getLogin().getMsg()); if ("登录成功".equals(getLogin().getMsg())) { //返回到登录成功的页面 return new ModelAndView(getSuccessPage(), model); } return new ModelAndView(getViewPage(), model); } 报错: 严重: Servlet.service() for servlet [dispatcherServlet] in context with path [/mySurvey] threw exception [successView isn't set] with root cause javax.servlet.ServletException: successView isn't set at org.springframework.web.servlet.mvc.SimpleFormController.onSubmit(SimpleFormController.java:416) at org.springframework.web.servlet.mvc.SimpleFormController.onSubmit(SimpleFormController.java:380) at org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:267) at org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:250) at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153) at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:819) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:754) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:399) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:364) at javax.servlet.http.HttpServlet.service(HttpServlet.java:650) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:957) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2476) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2465) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:662)
shiro JSP使用标签报错
在JSP页面使用shiro标签报错,要怎么改?求大神指点 java.lang.IllegalArgumentException: Wildcard string cannot be null or empty. Make sure permission strings are properly formatted. org.apache.shiro.authz.permission.WildcardPermission.setParts(WildcardPermission.java:151) org.apache.shiro.authz.permission.WildcardPermission.<init>(WildcardPermission.java:142) org.apache.shiro.authz.permission.WildcardPermission.<init>(WildcardPermission.java:138) org.apache.shiro.authz.permission.WildcardPermissionResolver.resolvePermission(WildcardPermissionResolver.java:41) org.apache.shiro.realm.AuthorizingRealm.resolvePermissions(AuthorizingRealm.java:433) org.apache.shiro.realm.AuthorizingRealm.getPermissions(AuthorizingRealm.java:409) org.apache.shiro.realm.AuthorizingRealm.isPermitted(AuthorizingRealm.java:466) org.apache.shiro.realm.AuthorizingRealm.isPermitted(AuthorizingRealm.java:462) org.apache.shiro.realm.AuthorizingRealm.isPermitted(AuthorizingRealm.java:457) org.apache.shiro.authz.ModularRealmAuthorizer.isPermitted(ModularRealmAuthorizer.java:223) org.apache.shiro.mgt.AuthorizingSecurityManager.isPermitted(AuthorizingSecurityManager.java:113) org.apache.shiro.subject.support.DelegatingSubject.isPermitted(DelegatingSubject.java:158) org.apache.shiro.web.tags.PermissionTag.isPermitted(PermissionTag.java:66) org.apache.shiro.web.tags.HasPermissionTag.showTagBody(HasPermissionTag.java:32) org.apache.shiro.web.tags.PermissionTag.onDoStartTag(PermissionTag.java:57) org.apache.shiro.web.tags.SecureTag.doStartTag(SecureTag.java:53) org.apache.jsp.success_jsp._jspx_meth_shiro_005fhasPermission_005f0(success_jsp.java:205) org.apache.jsp.success_jsp._jspService(success_jsp.java:122) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:438) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261) index.jsp <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <body> <h2>Hello World!</h2> <form action="/login.do" method="post"> <table> <tr> <td>账号:</td> <td><input name="username" value="${users.username}"/></td> </tr> <tr> <td>密码:</td> <td><input type="password" name="password" value="${users.password}"/></td><br/> <td><input type="submit" value="login"/><span style="font-size: 12px;color: red">${error}</span></td> </tr> </table> </form> </body> </html> 登录成功之后的页面success.jsp <%@ page contentType="text/html;charset=UTF-8" language="java" %> <%@ taglib prefix="shiro" uri="http://shiro.apache.org/tags" %> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> ${info }欢迎你<br/> <shiro:hasRole name="admin"> 欢迎有admin角色的用户!<shiro:principal/> </shiro:hasRole> <shiro:hasPermission name="student:create"> 欢迎有student:create权限的用户!<shiro:principal/> </shiro:hasPermission> </body> </html> controller @Controller public class UsersController { @Autowired private UsersService usersService; @RequestMapping("/login") public String login(Model model,Users users){ Subject subject = SecurityUtils.getSubject(); UsernamePasswordToken token = new UsernamePasswordToken(users.getUsername(),users.getPassword()); try { subject.login(token); // Model model1 = (Model) subject.getSession(); // model1.addAttribute("info","welcome to"); // Session session = subject.getSession(); // session.setAttribute("info","Welcome To Shiro"); return "redirect:/success.jsp"; }catch (Exception e) { e.printStackTrace(); model.addAttribute("users",users); model.addAttribute("error","用户名或密码错误"); return "index"; } } }
过滤器问题tomact已启动就报错
严重: Exception starting filter Filter java.lang.ClassNotFoundException: com.hp.filter.Filter at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:249) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:397) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3693) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4340) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920) at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:566) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) 2016-6-14 22:15:55 org.apache.catalina.core.StandardContext start 严重: Error filterStart 2016-6-14 22:15:55 org.apache.catalina.core.StandardContext start 严重: Context [/web10] startup failed due to previous errors 1我的过滤器代码是: package com.web.filter; import java.io.IOException; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * 实现过滤器功能 * @author Administrator * */ public class Filter implements javax.servlet.Filter { private FilterConfig config; @Override public void destroy() { // TODO Auto-generated method stub } @Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { System.out.println("doFilter"); // TODO Auto-generated method stub /** * 获取httprequest对象 */ HttpServletRequest httprequest = (HttpServletRequest) request; /** * 获取httpresponse对象 */ HttpServletResponse httpresponse = (HttpServletResponse) response; /** * 获取上下文参数 */ String noPat = config.getInitParameter("noPaths"); /** * 分割字符 */ String[] str = noPat.split(";"); /** * 循环遍历 分割的字符串 */ for (int i = 0; i < str.length; i++) { /** * 为空结束本次循环 */ if (str[i] != null && "".equals(str[i])) continue; /** * indexOf返回不为-1 放行 */ if (httprequest.getRequestURI().indexOf(str[i]) != -1) { chain.doFilter(request, response); return; } } /** * 获取session中的username(用户名) */ String username = (String) httprequest.getSession().getAttribute( "username"); /** * 用户名不为空 放行 */ if (username != null) { chain.doFilter(request, response); } /** * 用户名为空 拦截并返回登录页面 */ else { httpresponse.sendRedirect("login.jsp"); } } @Override public void init(FilterConfig filterConfig) throws ServletException { // TODO Auto-generated method stub config = filterConfig; System.out.println("init******************"); } } 配置文件是: <?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"> <!-- Filter --> <filter> <filter-name>Filter</filter-name> <filter-class>com.hp.filter.Filter</filter-class> <init-param> <param-name>noPaths</param-name> <param-value>index.jsp;</param-value> </init-param> </filter> <filter-mapping> <filter-name>Filter</filter-name> <url-pattern>*.jsp;*.html</url-pattern> </filter-mapping> <!-- IndexLoginServlet 登陆配置--> <servlet> <servlet-name>IndexLoginServlet</servlet-name> <servlet-class>com.web.servlet.IndexLoginServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>IndexLoginServlet</servlet-name> <url-pattern>/IndexLoginServlet</url-pattern> </servlet-mapping> <!-- Indext2RegisterServlet注册配置 --> <servlet> <servlet-name>Indext2RegisterServlet</servlet-name> <servlet-class>com.web.servlet.Indext2RegisterServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>Indext2RegisterServlet</servlet-name> <url-pattern>/Indext2RegisterServlet</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
做一个无界面实现注册登陆的功能,求指教?
java里用Servlet实现登陆、注册不带界面设计的功能。 我在web.xml文件中已经配置好浏览器地址,也弄好了数据库连接以及创建列表、封装列表等内容。 注册的添加数据方法用jdbc的添加也已实现。 现在问题是当登录时在浏览器地址栏中赋值用户名密码时,浏览器网页报错,Eclipse里的代码都没有语法错误,只是后续运行效果出不来,我把注册添加数据返回数据库进行存储和循环遍历查询整个数据库的方法都做好了,唯独效果出不来,怎么办,求大神指教?
Spring mvc kaptcha验证码 报错
十月 11, 2016 11:17:57 上午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet [SpringMVC] in context with path [/yiposi] threw exception [Handler processing failed; nested exception is java.lang.NoClassDefFoundError: com/jhlabs/image/RippleFilter] with root cause java.lang.ClassNotFoundException: com.jhlabs.image.RippleFilter at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559) at com.google.code.kaptcha.impl.WaterRipple.getDistortedImage(WaterRipple.java:32) at com.google.code.kaptcha.impl.DefaultKaptcha.createImage(DefaultKaptcha.java:44) at com.controller.CaptchaController.getCaptchaImage(CaptchaController.java:79) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:175) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1813) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) ``` ``` package com.controller; import java.awt.image.BufferedImage; import java.io.IOException; import javax.imageio.ImageIO; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.util.StringUtils; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.servlet.ModelAndView; import com.google.code.kaptcha.Constants; import com.google.code.kaptcha.Producer; /** * 验证码相关的接口 * * @author gaowei.cheng */ @Controller @RequestMapping(value = "/captcha") public class CaptchaController { private static final Log log = LogFactory.getLog(CaptchaController.class); @Autowired private Producer captchaProducer; /** * 页面入口 * @param model * @return */ @RequestMapping(value = "/getCaptcha", method = RequestMethod.GET) public String getCaptcha(Model model) { model.addAttribute("timestamp", System.currentTimeMillis()); return "captcha"; } /** * 生成带验证码的图片 * @param model * @param request * @param response * @param timestamp * @return * @throws IOException */ @RequestMapping(value = "/getCaptchaImage", method = RequestMethod.GET) public ModelAndView getCaptchaImage(Model model,HttpServletRequest request, HttpServletResponse response, @RequestParam(value = "timestamp", required = false) String timestamp) throws IOException { if (StringUtils.isEmpty(timestamp)) { //System.out.println("没有时间戳\ttimestamp:" + timestamp); model.addAttribute("timestamp", System.currentTimeMillis()); } else { //System.out.println("有时间戳\ttimestamp:" + timestamp); model.addAttribute("timestamp", timestamp); } response.setDateHeader("Expires", 0); response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate"); response.addHeader("Cache-Control", "post-check=0, pre-check=0"); response.setHeader("Pragma", "no-cache"); response.setContentType("image/jpeg"); String capText = captchaProducer.createText(); request.getSession().setAttribute(Constants.KAPTCHA_SESSION_KEY, capText); log.info("======生成了一个验证码,内容为:" + capText); BufferedImage bi = captchaProducer.createImage(capText);// 这里报错-------------------------------------------------- ServletOutputStream out = response.getOutputStream(); ImageIO.write(bi, "jpg", out); try { out.flush(); } finally { out.close(); } return null; } /** * * @param timestamp * @param code * @param request * @return true或fasle,ture表示验证成功,false表示验证失败 */ @RequestMapping(value = "/checkCaptcha", method = RequestMethod.POST) @ResponseBody public String checkCaptcha(@RequestParam(value = "timestamp", required = false) String timestamp, @RequestParam(value = "code", required = false) String code,HttpServletRequest request) { boolean returnStr = false; String original =(String) request.getSession().getAttribute(Constants.KAPTCHA_SESSION_KEY); log.info("======用户输入的验证码:" + code); log.info("======正确的验证码:" + original); if (!StringUtils.isEmpty(code)) { if (code.equalsIgnoreCase(original)) { returnStr = true; } } log.info("======验证结果" + returnStr); return returnStr + ""; } } ``` ```
int类型转换成User对象类型报错问题
想询问一下大佬们,出现了Integer转换成User对象报错的问题代码如下 ``` private void UserUpdate(HttpServletRequest req, HttpServletResponse resp) throws IOException { //获取数据 String pwd=req.getParameter("pwd"); //从session中获取用户信息//下面的User的转换出了问题 User u=(User) req.getSession().getAttribute("servlet"); int uid=u.getUid(); //调用service处理 int index=us.Update(pwd,uid); System.out.println("index="+index); if(index>0){ //获取session对象 HttpSession hs=req.getSession(); hs.setAttribute("pwd","true"); //重定向到登录页面 resp.sendRedirect("/Login.jsp"); } —————————————————————————————————————————————————————— : Servlet.service() for servlet [servlet] in context with path [/New] threw exception java.lang.ClassCastException: java.lang.Integer cannot be cast to com.cwj.pojo.User at com.cwj.servlet.UserServlet.UserUpdate(UserServlet.java:88) at com.cwj.servlet.UserServlet.service(UserServlet.java:41) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.logging.log4j.core.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:66) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1137) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:319) 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) ```
springmvc 跳转的jsp页面引用其他页面报错404
做了开发几年了,突然发现自己啥都不会。借着别人的项目学习学习。 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:p="http://www.springframework.org/schema/p" xmlns:c="http://www.springframework.org/schema/c" xmlns:util="http://www.springframework.org/schema/util" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xmlns:ehcache="http://www.springmodules.org/schema/ehcache" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd http://www.springmodules.org/schema/ehcache http://www.springmodules.org/schema/cache/springmodules-ehcache.xsd"> <!-- 使用annotation 自动注册bean,并保证@Required,@Autowired的属性被注入 --> <context:component-scan base-package="com.gray"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service" /> </context:component-scan> <aop:aspectj-autoproxy proxy-target-class="true"> <aop:include name="controllerAspect"/> </aop:aspectj-autoproxy> <!-- 对模型视图名称的解析,即在模型视图名称添加前后缀 --> <bean id="folderjsp" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value="" /><!--可为空,方便实现自已的依据扩展名来选择视图解释类的逻辑 --> </bean> <bean id ="foldermain" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/main/" /> <property name="suffix" value="" /><!--可为空,方便实现自已的依据扩展名来选择视图解释类的逻辑 --> </bean><!-- html视图解析器 必须先配置freemarkerConfig,注意html是没有prefix前缀属性的 <bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer"> <property name="templateLoaderPath"> <value>/WEB-INF/jsp/main/</value> </property> </bean> <bean id="htmlviewResolver" class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver"> <property name="suffix" value=".html" /> <property name="order" value="0"></property> <property name="contentType" value="text/html;charset=UTF-8"></property> </bean> --></beans> ``` spring-mybatis.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:p="http://www.springframework.org/schema/p" xmlns:c="http://www.springframework.org/schema/c" xmlns:util="http://www.springframework.org/schema/util" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xmlns:ehcache="http://www.springmodules.org/schema/ehcache" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd http://www.springmodules.org/schema/ehcache http://www.springmodules.org/schema/cache/springmodules-ehcache.xsd"> <!-- 引入属性文件 --> <context:property-placeholder location="classpath:spring/jdbc.properties" /> <!-- 自动扫描(自动注入) --> <context:component-scan base-package="com.gray.*.service" /> <!-- 配置数据源 --> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="${db.driver}"></property> <property name="url" value="${db.url}"></property> <property name="username" value="${db.username}"></property> <property name="password" value="${db.password}"></property> </bean> <!-- myBatis文件 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 --> <property name="configLocation" value="classpath:spring/mybatis-config.xml" /> <property name="mapperLocations" value="classpath:spring/mybatis.xml" /> </bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.gray.*.dao" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /> </bean> <!-- 配置事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!-- 配置事物的注解方式注入 --> <tx:annotation-driven transaction-manager="transactionManager"/> <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg index="0" ref="sqlSessionFactory" /> <constructor-arg index="1" value="BATCH" /> </bean> </beans> ``` controller.java ``` package com.gray.user.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import com.gray.user.entity.User; import com.gray.user.service.impl.UserServiceImpl; @Controller @RequestMapping("/main") public class loginController { @Autowired private UserServiceImpl userService; @RequestMapping("/dologin.do") public String dologin(User user, Model model){ boolean isLogin = false; System.out.println("call doUserLogin"); isLogin = userService.doUserLogin(user); if (isLogin) { System.out.println("用户名密码正确"); //跳转到主页面 return "main/main.jsp"; }else { model.addAttribute("message", "用户名或者密码错误"); return "/fail.jsp";//返回的页面 } } /** * 账户密码输入错误的页面跳转 * @return 登录页面 */ @RequestMapping("/backIndex.do") public String backIndex(){ return "index.jsp"; } } ``` 主页面index.jsp ``` <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>学生管理系统</title> <link rel="stylesheet" href="/WEB-INF/css/style.css"/> <link rel="stylesheet" href="/WEB-INF/css/select.css"/> </head> <body> <div id="clouds" style="font-size: 35px; text-align: center;"> 学生管理系统 <div class="cloud x1"></div> <div class="cloud x2"></div> <div class="cloud x3"></div> <div class="cloud x4"></div> <div class="cloud x5"></div> </div> <div class="container" > <div id="login"> <form method="post" action="main/dologin.do" method="post"> <fieldset class="clearfix"> <span class="fontawesome-user"></span> <input type="text" name="username" placeholder="UserId"> <span class="fontawesome-lock"></span> <input name="password" type="password" placeholder="PassWord"> <input type="submit" value="登录"> </fieldset> </form> </div> </div> </body> </html> ``` 要跳转的页面maiin.jsp ``` <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>信息管理系统</title> </head> <frameset rows="88,*" cols="*" frameborder="no" border="0" framespacing="0"> <frame src="/WEB-INF/jsp/top.jsp" name="topFrame" scrolling="no" noresize="noresize" id="topFrame" title="topFrame" /> <!--<frameset cols="187,*" frameborder="no" border="0" framespacing="0"> <frame src="left.html" name="leftFrame" scrolling="no" noresize="noresize" id="leftFrame" title="leftFrame" /> <frame src="index.html" name="rightFrame" id="rightFrame" title="rightFrame" /> </frameset> --> </frameset> <noframes><body> </body></noframes> </html> ``` 跳转之后的页面![图片说明](https://img-ask.csdn.net/upload/201710/18/1508334915_530030.jpg)
spring+springmvc+mybatis环境搭建报错
## # application.xml spring配置文件内容: <!-- 引入jdbc配置文件 --> <context:property-placeholder location="classpath:config/jdbc.properties" /> <!-- 可通过注解控制事务 <tx:annotation-driven />--> <!-- 扫描注解类,否则找不到bean --> <context:component-scan base-package="com.zj.service"></context:component-scan> ## # springmvc-servlet.xml 文件内容: <!-- 启用spring mvc 注解 <context:annotation-config />--> <!-- 设置使用注解的类所在的jar包 --> <context:component-scan base-package="com.zj.controller"></context:component-scan> <!--创建jdbc数据源 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${driver}" /> <property name="url" value="${url}" /> <property name="username" value="${uname}" /> <property name="password" value="${pwd}" /> </bean> <!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!-- 自动扫描mapping.xml文件 --> <property name="mapperLocations" value="classpath:com/zj/dao/*.xml"></property> </bean> <!-- DAO接口所在包名,Spring会自动查找其下的类 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.zj.dao" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean> <!-- 完成请求和注解POJO的映射 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" /> <!-- 对转向页面的路径解析。prefix:前缀, suffix:后缀 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/jsp/"></property> <property name="suffix" value=".jsp"></property> </bean> ## # LoginController.java package com.zj.controller; import javax.servlet.http.HttpServletRequest; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import com.zj.entity.UserInfo; import com.zj.service.LoginService; @Controller public class LoginController { private LoginService loginService; public LoginService getLoginService() { return loginService; } @Autowired public void setLoginService(LoginService loginService) { this.loginService = loginService; } @RequestMapping("/login") public ModelAndView login(String username,String password, HttpServletRequest request){ return new ModelAndView("login"); } @RequestMapping("/login2") public ModelAndView testLogin2(String username, String password){ UserInfo ui = new UserInfo(); UserInfo result = this.loginService.find(ui); System.out.println("用户名:"+result.getUsername()); // request和response不必非要出现在方法中,如果用不上的话可以去掉 // 参数的名称是与页面控件的name相匹配,参数类型会自动被转换 if (result==null) { return new ModelAndView("loginError"); // 手动实例化ModelAndView完成跳转页面(转发),效果等同于上面的方法返回字符串 }else{ return new ModelAndView("loginSuccess"); } // 采用重定向方式跳转页面 // 重定向还有一种简单写法 // return new ModelAndView("redirect:../index.jsp"); } } } ## # LoginDao.java package com.zj.dao; import com.zj.entity.UserInfo; public interface LoginDao { public UserInfo getUserInfo(UserInfo UserInfo); // public void addUserInfo(UserInfo UserInfo); // // public void updateUserInfo(UserInfo UserInfo); // // public void deleteUserInfo(int UserInfoId); } ## # LoginDao.xml <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.zj.dao.LoginDao"> <select id="getUserInfo" parameterType="com.zj.entity.UserInfo" resultType="com.zj.entity.UserInfo"> SELECT * FROM userinfo WHERE username=#{username} AND password=#{password} </select> </mapper> # 业务实现类LoginServiceImpl.java package com.zj.service.impl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.zj.dao.LoginDao; import com.zj.entity.UserInfo; import com.zj.service.LoginService; @Service("loginService") public class LoginServiceImpl implements LoginService{ private LoginDao loginDao; public LoginDao getUserDao() { return loginDao; } @Autowired public void setUserDao(LoginDao userDao) { this.loginDao = userDao; } public UserInfo find(UserInfo userInfo) { return this.loginDao.getUserInfo(userInfo); } } ## # 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_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>pro</display-name> <!-- 不拦截静态文件 --> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>/js/*</url-pattern> <url-pattern>/css/*</url-pattern> <url-pattern>/imgs/*</url-pattern> <url-pattern>/fonts/*</url-pattern> </servlet-mapping> <!-- Spring配置 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:config/applicationContext.xml</param-value> </context-param> <!-- Spring MVC配置 --> <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:config/springmvc-servlet.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> <!-- 配置字符集 --> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <session-config> <session-timeout>30</session-timeout> </session-config> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> </web-app> # 最后是错误信息: Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.zj.dao.LoginDao] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} 用测试类测试的时候没有问题,一启动tomcat就报错,求看看是哪里的问题,谢谢![![![图片说明](https://img-ask.csdn.net/upload/201512/22/1450795020_467185.png)图片说明](https://img-ask.csdn.net/upload/201512/22/1450795014_103343.png)图片说明](https://img-ask.csdn.net/upload/201512/22/1450794997_116981.png)
实现用户自动登陆,登陆之后,关闭浏览器重新进入页面报错
![图片说明](https://img-ask.csdn.net/upload/201811/16/1542351051_651356.jpg) ClientAbortException: java.net.SocketException: Software caused connection abort: socket write error at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:406) at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:371) at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:431) at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:419) at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:91) at org.apache.catalina.servlets.DefaultServlet.copy(DefaultServlet.java:1861) at org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:961) at org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:411) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at com.yuqixian.store.web.filter.AutoLoginFilter.doFilter(AutoLoginFilter.java:46) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at com.yuqixian.store.web.filter.EncodingFilter.doFilter(EncodingFilter.java:36) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.valves.CometConnectionManagerValve.invoke(CometConnectionManagerValve.java:186)
shiro添加了sessionDAO如果不进登陆页面就会报错,不能进行拦截跳转
``` 严重: Servlet.service() for servlet [com.hhwy.fweb.framework.mvc.MainDispather] in context with path [/security] threw exception [javax.servlet.ServletException: java.lang.IllegalStateException: Cannot create a session after the response has been committed] with root cause java.lang.IllegalStateException: Cannot create a session after the response has been committed at org.apache.catalina.connector.Request.doGetSession(Request.java:3030) at org.apache.catalina.connector.Request.getSession(Request.java:2468) at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:896) at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:231) at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:571) at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:542) at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:240) at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:240) at org.apache.jasper.runtime.PageContextImpl.initialize(PageContextImpl.java:137) at org.apache.jasper.runtime.JspFactoryImpl.internalGetPageContext(JspFactoryImpl.java:109) at org.apache.jasper.runtime.JspFactoryImpl.getPageContext(JspFactoryImpl.java:60) at org.apache.jsp.WEB_002dINF.classes.META_002dINF.resources.WEB_002dINF.jsp.ac.index_jsp._jspService(index_jsp.java:100) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330) at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:728) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:591) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:527) at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:162) at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:314) at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1325) at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1069) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1008) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925) at com.hhwy.fweb.framework.mvc.MainDispather.doService(MainDispather.java:95) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:978) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:870) at javax.servlet.http.HttpServlet.service(HttpServlet.java:635) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:855) at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at com.hhwy.fweb.framework.mvc.filter.LandFilter.doFilter(LandFilter.java:42) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at com.hhwy.fweb.framework.mvc.filter.CommonFilter.doFilter(CommonFilter.java:32) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) ``` 下面是session的配置 ``` <bean id="sessionDAO" class="org.apache.shiro.session.mgt.eis.MemorySessionDAO"/> <bean id="sessionManager" class="org.apache.shiro.web.session.mgt.DefaultWebSessionManager"> <property name="sessionDAO" ref="sessionDAO"/> </bean> <bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager"> <property name="realm" ref="acRealm"></property> <property name="rememberMeManager" ref="rememberMeManager" /> <!-- 定义要使用的缓存管理器 --> <property name="cacheManager" ref="shiroCacheManager"/> <property name="sessionManager" ref="sessionManager" /> </bean> ``` 而且为什么登陆进去之后通过sessionDAO.getActiveSessions获取在线用户,会获取到很多个session(只有我一个人登陆),不关闭浏览器多次退出登陆和登陆还会增加session,求大神解答 重点是上面的错误怎么解决啊,大神们TAT
我的myeclipse中做j2ee项目加载了mysql报错了
package com.yyc.controller; import java.io.IOException; import java.io.PrintWriter; import java.sql.*; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class LoginC1Servlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("utf-8"); //response.setContentType("text/html;charset=UTF-8"); //PrintWriter out = response.getWriter(); String id =request.getParameter("id"); String password=request.getParameter("password"); //从数据库中获取验证 Connection con=null; ResultSet rs=null; PreparedStatement ps=null; try{ //1.加载驱动 Class.forName("mysql.jdbc.Driver"); //2.得到链接 con = DriverManager.getConnection("jdbc:mysql://localhost:3306/itat_shop", "root", "chuan080702"); //3.preparedStatement ps=con.prepareStatement("select *from users where id=? and passwd=?"); //给?号赋值 ps.setObject(1,id); ps.setObject(2,password); //4.执行操作 rs=ps.executeQuery(); //5.根据结果做相应的处理 if(rs.next()){ //说明该用户合法 request.getRequestDispatcher("/MainFrame").forward(request, response); }else{ request.setAttribute("err", "用户id或密码错误!!!"); request.getRequestDispatcher("/LoginServlet").forward(request, response); } }catch(Exception e){ e.printStackTrace(); }finally{ //关闭资源 if(rs!=null){ try{ rs.close(); }catch(Exception e){ e.printStackTrace(); } rs=null; } if(ps!=null){ try{ ps.close(); }catch(Exception e){ e.printStackTrace(); } ps=null; }if(con!=null){ } try{ con.close(); }catch(Exception e){ e.printStackTrace(); } con=null; } /* //检查是否接受数据 //这里我们先简单验证 if("yangyongchuan".equals(username)&&"123".equals(password)){ //跳转到下一个页面[servlet 提供了两种Sendredirect跳转forward 转发] response.sendRedirect("/UserManager/MainFrame?uname="+username); }else{ //跳回 response.sendRedirect("/UserManager/LoginServlet"); } **/ } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doGet(request, response); } } 信息: Server startup in 14390 ms java.lang.ClassNotFoundException: mysql.jdbc.Driver at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:190) at com.yyc.controller.LoginC1Servlet.doGet(LoginC1Servlet.java:30) at com.yyc.controller.LoginC1Servlet.doPost(LoginC1Servlet.java:112) at javax.servlet.http.HttpServlet.service(HttpServlet.java:643) at javax.servlet.http.HttpServlet.service(HttpServlet.java:723) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:879) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:617) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1778) at java.lang.Thread.run(Thread.java:744) java.lang.NullPointerException at com.yyc.controller.LoginC1Servlet.doGet(LoginC1Servlet.java:79) at com.yyc.controller.LoginC1Servlet.doPost(LoginC1Servlet.java:112) at javax.servlet.http.HttpServlet.service(HttpServlet.java:643) at javax.servlet.http.HttpServlet.service(HttpServlet.java:723) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:879) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:617) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1778) at java.lang.Thread.run(Thread.java:744)
Struts的action提交后,结果页面刷新报错的问题
经过如下: struts有一个action,是显示用户列表的,在首页通过此连接来显示所有用户列表,通过hibernate查询后,将list存放在request中,然后在结果页面,通过取得request中的list进行显示。 tomcat刚启动时,点这个链接能够显示所有用户列表,地址栏此时的地址是http://localhost/vmia/userlist.do,但是如果刷新的话,用户列表就消失了。而且控制台会报错。 请大家帮忙看下是什么原因 [code="java"] ** BEGIN NESTED EXCEPTION ** java.net.SocketException MESSAGE: Software caused connection abort: socket write error STACKTRACE: java.net.SocketException: Software caused connection abort: socket write error at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(Unknown Source) at java.net.SocketOutputStream.write(Unknown Source) at java.io.BufferedOutputStream.flushBuffer(Unknown Source) at java.io.BufferedOutputStream.flush(Unknown Source) at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2739) at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2650) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1581) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1695) at com.mysql.jdbc.Connection.execSQL(Connection.java:3026) at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1137) at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1231) at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:139) at org.hibernate.loader.Loader.getResultSet(Loader.java:1669) at org.hibernate.loader.Loader.doQuery(Loader.java:662) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224) at org.hibernate.loader.Loader.doList(Loader.java:2145) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029) at org.hibernate.loader.Loader.list(Loader.java:2024) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:375) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:308) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:153) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1106) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) at com.byd.hbn.UserEDAO.findAll(UserEDAO.java:168) at com.byd.struts.action.UserlistAction.execute(UserlistAction.java:48) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Unknown Source) ** END NESTED EXCEPTION ** Last packet sent to the server was 0 ms ago. ERROR 2008-09-22 09:16:21,019 com.bd.hbn.UserEDAO.findAll(UserEDAO.java:170) - find all failed org.hibernate.exception.JDBCConnectionException: could not execute query at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) at org.hibernate.loader.Loader.doList(Loader.java:2148) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029) at org.hibernate.loader.Loader.list(Loader.java:2024) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:375) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:308) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:153) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1106) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) at com.byd.hbn.UserEDAO.findAll(UserEDAO.java:168) at com.byd.struts.action.UserlistAction.execute(UserlistAction.java:48) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Unknown Source) Caused by: com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.net.SocketException MESSAGE: Software caused connection abort: socket write error STACKTRACE: java.net.SocketException: Software caused connection abort: socket write error at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(Unknown Source) at java.net.SocketOutputStream.write(Unknown Source) at java.io.BufferedOutputStream.flushBuffer(Unknown Source) at java.io.BufferedOutputStream.flush(Unknown Source) at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2739) at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2650) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1581) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1695) at com.mysql.jdbc.Connection.execSQL(Connection.java:3026) at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1137) at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1231) at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:139) at org.hibernate.loader.Loader.getResultSet(Loader.java:1669) at org.hibernate.loader.Loader.doQuery(Loader.java:662) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224) at org.hibernate.loader.Loader.doList(Loader.java:2145) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029) at org.hibernate.loader.Loader.list(Loader.java:2024) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:375) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:308) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:153) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1106) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) at com.byd.hbn.UserEDAO.findAll(UserEDAO.java:168) at com.byd.struts.action.UserlistAction.execute(UserlistAction.java:48) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Unknown Source) ** END NESTED EXCEPTION ** Last packet sent to the server was 0 ms ago. at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2757) at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2650) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1581) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1695) at com.mysql.jdbc.Connection.execSQL(Connection.java:3026) at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1137) at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1231) at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:139) at org.hibernate.loader.Loader.getResultSet(Loader.java:1669) at org.hibernate.loader.Loader.doQuery(Loader.java:662) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224) at org.hibernate.loader.Loader.doList(Loader.java:2145) ... 27 more ERROR 2008-09-22 09:16:21,019 com.byd.struts.action.UserlistAction.execute(UserlistAction.java:53) - search failed org.hibernate.exception.JDBCConnectionException: could not execute query at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) at org.hibernate.loader.Loader.doList(Loader.java:2148) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029) at org.hibernate.loader.Loader.list(Loader.java:2024) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:375) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:308) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:153) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1106) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) at com.byd.hbn.UserEDAO.findAll(UserEDAO.java:168) at com.byd.struts.action.UserlistAction.execute(UserlistAction.java:48) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Unknown Source) Caused by: com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.net.SocketException MESSAGE: Software caused connection abort: socket write error STACKTRACE: java.net.SocketException: Software caused connection abort: socket write error at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(Unknown Source) at java.net.SocketOutputStream.write(Unknown Source) at java.io.BufferedOutputStream.flushBuffer(Unknown Source) at java.io.BufferedOutputStream.flush(Unknown Source) at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2739) at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2650) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1581) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1695) at com.mysql.jdbc.Connection.execSQL(Connection.java:3026) at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1137) at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1231) at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:139) at org.hibernate.loader.Loader.getResultSet(Loader.java:1669) at org.hibernate.loader.Loader.doQuery(Loader.java:662) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224) at org.hibernate.loader.Loader.doList(Loader.java:2145) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029) at org.hibernate.loader.Loader.list(Loader.java:2024) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:375) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:308) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:153) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1106) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) at com.byd.hbn.UserEDAO.findAll(UserEDAO.java:168) at com.byd.struts.action.UserlistAction.execute(UserlistAction.java:48) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Unknown Source) ** END NESTED EXCEPTION ** [/code] [b]问题补充:[/b] @eyeqq 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