The server encountered an unexpected condition that prevented it from fulfilling the request.

在servlet中的post请求中添加switch op 就产生了以下错误
图片说明

请大佬帮忙看下怎么解决

下方servlet代码
package com.fruit.tray.controller;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.Writer;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

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

import com.alibaba.fastjson.JSON;
import com.fruit.tray.bean.User;
import com.fruit.tray.service.UserService;
import com.fruit.tray.service.impl.UserServiceImpl;

@WebServlet(urlPatterns = "/servlet/user")
public class UserServlet extends HttpServlet {
private static final long serialVersionUID = 1L;

private UserService userService = new UserServiceImpl(); 

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    doPost(request, response);
}

@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

// 避免请求意外的设置
response.setContentType("text/html;charset=utf-8");
/*设置响应头允许ajax跨域访问*/
response.setHeader("Access-Control-Allow-Origin", "*");

    /* 星号表示所有的异域请求都可以接受, */
    response.setHeader("Access-Control-Allow-Methods", "GET,POST");
    UserService userService = new UserServiceImpl();

    String op = request.getParameter("op");
    switch (op) {
    case "login":

         try {
            login(request, response, userService);
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        break;
    case "regist":
        try {
            regist(request, response, userService);
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        break;
    default:
        break;
    }




    //返回值给微信小程序
    /*Writer out = response.getWriter();
    out.write("进入后台了");

    out.flush();*/
}

private void regist(HttpServletRequest request, HttpServletResponse response, UserService userService)
        throws SQLException, IOException {
    String rphone = request.getParameter("phone");
    String rpassword1 = request.getParameter("pwd1");
    String rpassword2 = request.getParameter("pwd2");
    String rsex = request.getParameter("sex");
    String raddr1 = request.getParameter("addr1");
    String raddr2 = request.getParameter("addr2");
    String rthree = request.getParameter("three");
    User ruser = new User("null", rphone, rpassword1, rthree, raddr1, raddr2, 18, rsex, "null", "null", null, "null");


        User regist = userService.regist(ruser);


    if (ruser != null) {
        System.out.println("注册成功");
        PrintWriter write = response.getWriter();
        write.println("注册成功返回前台");
    }else {
        PrintWriter write = response.getWriter();
        write.println("注册失败返回前台");
    }
}

private void login(HttpServletRequest request, HttpServletResponse response, UserService userService)
        throws SQLException, IOException {
    //获取微信小程序get的参数值并打印
    String phone = request.getParameter("phone");
    String password = request.getParameter("pwd");
    System.out.println("phone:" + phone + "password:" + password);
    User user = null;

        user = userService.login(phone, password);

    if (user != null) {
        System.out.println(user.getUserName());

// 对象翻译成json字符串
String jsonObject = JSON.toJSONString(user);
System.out.println(jsonObject);

// list对象数组翻译成json字符串
List list = new ArrayList<>();
list.add(user);

        String jsonList = JSON.toJSONString(list);  
        response.setContentType("application/json;charset=UTF-8");
        response.setCharacterEncoding("utf-8"); 
        System.out.println(jsonList);
        PrintWriter out = response.getWriter();
        out.println(jsonList);

    }else {
        PrintWriter write = response.getWriter();
        write.println("用户名不匹配");

    }
}

}

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spring+springmvc+mybatis 出错信息求解

HTTP Status 500 - -------------------------------------------------------------------------------- type Exception report # message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Servlet.init() for servlet springDispatcherServlet threw exception org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:706) org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:677) org.apache.jsp.index_jsp._jspService(index_jsp.java:57) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:847) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:326) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:253) javax.servlet.http.HttpServlet.service(HttpServlet.java:847) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) # root cause org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'infoController': Unsatisfied dependency expressed through field 'infoService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.jiebai.crud.service.InfoService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588) org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:138) javax.servlet.GenericServlet.init(GenericServlet.java:242) org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:706) org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:677) org.apache.jsp.index_jsp._jspService(index_jsp.java:57) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:847) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:326) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:253) javax.servlet.http.HttpServlet.service(HttpServlet.java:847) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) # root cause org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.jiebai.crud.service.InfoService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1486) org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1104) org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585) org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:138) javax.servlet.GenericServlet.init(GenericServlet.java:242) org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:706) org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:677) org.apache.jsp.index_jsp._jspService(index_jsp.java:57) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:847) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:326) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:253) javax.servlet.http.HttpServlet.service(HttpServlet.java:847) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) note The full stack trace of the root cause is available in the JBoss Web/7.0.13.Final logs. -------------------------------------------------------------------------------- JBoss Web/7.0.13.Final

关于cas使用saml协议验证问题

错误代码如下: HTTP Status 500 – Internal Server Error Type Exception Report Message IO error sending HTTP request to /samlValidate Description The server encountered an unexpected condition that prevented it from fulfilling the request. Exception java.lang.RuntimeException: IO error sending HTTP request to /samlValidate org.jasig.cas.client.validation.Saml11TicketValidator.retrieveResponseFromServer(Saml11TicketValidator.java:212) org.jasig.cas.client.validation.AbstractUrlBasedTicketValidator.validate(AbstractUrlBasedTicketValidator.java:193) org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:204) org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:97) Root Cause java.io.IOException: Server returned HTTP response code: 500 for URL: http://localhost:9000/samlValidate?TARGET=http%3A%2F%2Flocalhost%3A8080%2F sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1894) sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492) org.jasig.cas.client.validation.Saml11TicketValidator.retrieveResponseFromServer(Saml11TicketValidator.java:210) org.jasig.cas.client.validation.AbstractUrlBasedTicketValidator.validate(AbstractUrlBasedTicketValidator.java:193) org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:204) org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:97) Note The full stack trace of the root cause is available in the server logs. cas server版本为4.0.7,关于saml协议的配置按照其官网的配置,不明白错误发生在哪里,求解答

IntelliJ IDE 中运行web,网页显示Message Unable to compile class for JSP,请大神帮忙解答下

Exception Report Message Unable to compile class for JSP: Description The server encountered an unexpected condition that prevented it from fulfilling the request. Exception org.apache.jasper.JasperException: Unable to compile class for JSP: An error occurred at line: [16] in the jsp file: [/index.jsp] The local variable money may not have been initialized 13: <body> 14: 涓浗 15: <% 16: String money=request.getParameter(money); 17: //out.print("涓�涓▋濞�"+money+"鍧楅挶"); 18: %> 19: > Stacktrace: org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:102) org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:212) org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:495) org.apache.jasper.compiler.Compiler.compile(Compiler.java:378) org.apache.jasper.compiler.Compiler.compile(Compiler.java:350) org.apache.jasper.compiler.Compiler.compile(Compiler.java:334) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:595) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:399) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) Note The full stack trace of the root cause is available in the server logs.

点击登录报如下错误,测试loginDao报如下错误

测试代码为: package cn.xuxu.login.dao; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import cn.xuxu.login.entity.User_XuXu; public class test { public static void main(String[]args){ String conf="applicationContext.xml"; ApplicationContext ac=new ClassPathXmlApplicationContext(conf); LoginDao dao=ac.getBean("loginDao",LoginDao.class); User_XuXu data=dao.findAllByName("pig"); System.out.println(data.getPassword()); } } dao层错误为: 信息: Loading XML bean definitions from class path resource [applicationContext.xml] Exception in thread "main" java.lang.NoClassDefFoundError: javax/servlet/ServletContext at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2427) at java.lang.Class.getDeclaredMethods(Class.java:1791) at org.springframework.core.type.StandardAnnotationMetadat

编写的java登录页面一运行就报这样的错误

HTTP Status 500 – Internal Server Error Type Exception Report Message Servlet execution threw an exception Description The server encountered an unexpected condition that prevented it from fulfilling the request. Exception javax.servlet.ServletException: Servlet execution threw an exception org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) Root Cause java.lang.NoClassDefFoundError: com/itheima/Utils/DruidUtils com.itheima.Dao.loginDao.findUserByNameAndPwd(loginDao.java:13) com.itheima.service.LoginService.login(LoginService.java:10) com.itheima.web.servlet.LoginServlet.doPost(LoginServlet.java:39) com.itheima.web.servlet.LoginServlet.doGet(LoginServlet.java:55) javax.servlet.http.HttpServlet.service(HttpServlet.java:635) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) Root Cause java.lang.ClassNotFoundException: com.itheima.Utils.DruidUtils org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1291) org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119) com.itheima.Dao.loginDao.findUserByNameAndPwd(loginDao.java:13) com.itheima.service.LoginService.login(LoginService.java:10) com.itheima.web.servlet.LoginServlet.doPost(LoginServlet.java:39) com.itheima.web.servlet.LoginServlet.doGet(LoginServlet.java:55) javax.servlet.http.HttpServlet.service(HttpServlet.java:635) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) Note The full stack trace of the root cause is available in the server logs. 运行报错找不到原因

Nextcloud修改服务器文件夹遇到问题

Ubuntu系统下搭建自己的网盘----Nextcloud - u013566528的博客 - CSDN博客 https://blog.csdn.net/u013566528/article/details/84756436 按照这个办法修改文件夹,但是报错, Internal Server Error The server encountered an internal error and was unable to complete your request. Please contact the server administrator if this error reappears multiple times, please include the technical details below in your report. More details can be found in the webserver log. 不知什么原因,怎么解决,谢谢

solr安装过程中遇到的问题

Type Exception Report Message Error processing the request. CoreContainer is either not initialized or shutting down. Description The server encountered an unexpected condition that prevented it from fulfilling the request. Exception org.apache.solr.common.SolrException: Error processing the request. CoreContainer is either not initialized or shutting down. org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:307) org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:298) Note The full stack trace of the root cause is available in the server logs. 在Linux中安装solr6.5和Tomcat参考安装http://www.cnblogs.com/wander1129/p/6658318.html在登录初始页面时出现上面这个错误下面是日志报错信息09-Oct-2017 23:21:34.765 信息 [localhost-startStop-2] org.apache.catalina.core.ApplicationContext.log SessionListener: contextDestroyed() 09-Oct-2017 23:21:34.767 信息 [localhost-startStop-2] org.apache.catalina.core.ApplicationContext.log ContextListener: contextDestroyed() 09-Oct-2017 23:22:04.843 信息 [localhost-startStop-1] org.apache.catalina.core.ApplicationContext.log ContextListener: contextInitialized() 09-Oct-2017 23:22:04.847 信息 [localhost-startStop-1] org.apache.catalina.core.ApplicationContext.log SessionListener: contextInitialized() 09-Oct-2017 23:22:05.335 严重 [http-nio-8080-exec-1] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [LoadAdminUI] in context with path [] threw exception org.apache.solr.common.SolrException: Error processing the request. CoreContainer is either not initialized or shutting down. at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:307) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:298) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)

安装MySQL-5.6的时候遇到如下错误,请大神帮助解决?

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轻松等回家通知

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