关于测试核心控制器500错误
Message Servlet.init() for servlet [Ddispatcher] threw exception
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
javax.servlet.ServletException: Servlet.init() for servlet [Ddispatcher] threw exception
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:745)
Root Cause
org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'row' for bean class [com.mysql.cj.xdevapi.Row] conflicts with existing, non-compatible bean definition of same name and class [com.mysql.cj.result.Row]
org.springframework.context.annotation.ClassPathBeanDefinitionScanner.checkCandidate(ClassPathBeanDefinitionScanner.java:320)
org.mybatis.spring.mapper.ClassPathMapperScanner.checkCandidate(ClassPathMapperScanner.java:256)
org.springframework.context.annotation.ClassPathBeanDefinitionScanner.doScan(ClassPathBeanDefinitionScanner.java:259)
org.mybatis.spring.mapper.ClassPathMapperScanner.doScan(ClassPathMapperScanner.java:181)
org.springframework.context.annotation.ClassPathBeanDefinitionScanner.scan(ClassPathBeanDefinitionScanner.java:226)
org.mybatis.spring.mapper.MapperScannerConfigurer.postProcessBeanDefinitionRegistry(MapperScannerConfigurer.java:356)
org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:123)
org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:678)
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:520)
org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
com.controller.GrobalController.init(GrobalController.java:22)
javax.servlet.GenericServlet.init(GenericServlet.java:158)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:745)
Note The full stack trace of the root cause is available in the server logs.
我的核心控制器
package com.controller;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.stereotype.Controller;
import javax.servlet.GenericServlet;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
@Controller
public class GrobalController extends GenericServlet {
private ApplicationContext applicationContext;
public void init() throws ServletException {
applicationContext= new ClassPathXmlApplicationContext("spring.xml");
}
@Override
public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
//.do
// /Staff/add.do
// /login.do Test
HttpServletRequest request=(HttpServletRequest)servletRequest;
HttpServletResponse response=(HttpServletResponse)servletResponse;
String path=request.getServletPath();
String classname;
String methodName;
int index=path.lastIndexOf("/");
if(index!=-1){
classname=path.substring(1,index)+"Controller";
methodName=path.substring(index+1,path.indexOf(".do"));
} else {
classname="DefaultController";
methodName=path.substring(0,path.indexOf(".do"));
}
Object obj = applicationContext.getBean(classname);
try {
Method method=obj.getClass().getMethod(methodName, HttpServletRequest.class, HttpServletResponse.class);
method.invoke(obj,request,response);
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
}
看错误是发生在init方法好像，，又说org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'row' for bean class [com.mysql.cj.xdevapi.Row] conflicts with existing, non-compatible bean definition of same name and class [com.mysql.cj.result.Row]
请老师帮忙看一下11
收起
正在回答
2回答
同学你好！
同学的代码在老师这里没有报这个错，同学的报错信息是说row这个bean重复了，但是提示的两个类都是mysql中的问题，不是同学的代码问题，因此老师推测可能第同学的spring.xml中配置有误
建议同学使用老师源码中的配置，或者将自己的spring.xml文件贴出来老师在本地测试一下。注意：在我要回答中贴出
另外同学的代码，有个地方拼写错了呢
如果我的回答解决了你的疑惑，请采纳，祝学习愉快~
慕神0034598
2019-09-29 15:36:07
<?xml version="1.0" encoding="UTF-8" ?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource" > <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/sm_personManagement?useUnicode=true&charactrEncoding=UTF-8&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true"/> <property name="username" value="root"/> <property name="password" value="root"/> </bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean" > <property name="dataSource" ref="dataSource"/> </bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com"/> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> </bean> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean> <bean id="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate"> <!--指定事务管理器--> <property name="transactionManager" ref="transactionManager"/> </bean> <!--开启注解扫描=======================--> <context:component-scan base-package="com"/> </beans>
GrobalController
package com.controller;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.stereotype.Controller;
import javax.servlet.GenericServlet;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
@Controller
public class GrobalController extends GenericServlet {
private ApplicationContext applicationContext;
public void init() throws ServletException {
applicationContext= new ClassPathXmlApplicationContext("springs.xml");
}
@Override
public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
//.do
// Staff/add.do
// login.do Test
HttpServletRequest request=(HttpServletRequest)servletRequest;
HttpServletResponse response=(HttpServletResponse)servletResponse;
String path=request.getServletPath().substring(1);
System.out.println(path);
String classname;
String methodName;
int index=path.lastIndexOf("/");
if(index!=-1){
classname=path.substring(0,index)+"Controller";
methodName=path.substring(index,path.indexOf(".do"));
} else {
classname="DefaultController";
methodName=path.substring(0,path.indexOf(".do"));
}
Object obj = applicationContext.getBean(classname);
try {
Method method=obj.getClass().getMethod(methodName, HttpServletRequest.class, HttpServletResponse.class);
method.invoke(obj,request,response);
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
}测试控制器 TestController
package com.controller;
import org.springframework.stereotype.Controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@Controller("testController")
public class TestController {
public void show(HttpServletRequest request, HttpServletResponse response){
request.setAttribute("msg","success");
request.getRequestDispatcher("../index.jsp");
}}上面是我原本的spring.xml,,我替换了老师的spring文件，，tomcat配置的路径是
进去之后是空白页，，没有跳转，控制台也没有爆红
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