英文:
@ControllerAdvice not working even GlobalHandler class is in other package- Spring MVC Exception Handling
问题
我有一个控制器，在某些情况下会抛出 IOException 异常。异常被抛出并且消息被打印出来，但是 ControllerAdvice 类没有被触发。此外，我已将 GlobalHandler 类放在其他包中。以下是我相关的文件：
MainController.java
package com.spring.practice;
import java.io.IOException;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class MainController {
@RequestMapping(value = "/hello.htm")
public String hello() throws IOException {
// 渲染 hello.jsp 页面
return "hello";
}
@RequestMapping(value = "/test.htm")
public String test() throws IOException {
// 仅抛出异常以测试异常处理映射
if (true) {
throw new IOException("this is io exception");
}
// 渲染 hello.jsp 页面
return "hello";
}
}
GlobalHandler.java
package com.spring.test;
import java.io.IOException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
@ControllerAdvice
@EnableWebMvc
public class GlobalHandler {
@ExceptionHandler(IOException.class)
public ModelAndView exception(IOException e) {
ModelAndView mav = new ModelAndView("exception");
mav.addObject("name", e.getClass().getSimpleName());
mav.addObject("message", e.getMessage());
return mav;
}
}
web.xml
spring-servlet.xml
exception.jsp
hello.jsp
完整的错误日志（略）
<details>
<summary>英文:</summary>
I have a controller that throws an IOException in certain situations. The exception are being thrown and the message printed but the ControllerAdvice class is not getting fired.Also I have put the GlobalHandler class in other package. Here's my relevant files:
MainController.java
package com.spring.practice;
import java.io.IOException;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class MainController {
@RequestMapping(value = "/hello.htm")
public String hello() throws IOException {
// render hello.jsp page
return "hello";
}
@RequestMapping(value = "/test.htm")
public String test() throws IOException {
//just throw exception to test the exceptionhandler mapping
if(true) {
throw new IOException("this is io exception");
}
// render hello.jsp page
return "hello";
}
}
GlobalHandler.java
package com.spring.test;
import java.io.IOException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
@ControllerAdvice
@EnableWebMvc
public class GlobalHandler {
@ExceptionHandler(IOException.class)
public ModelAndView exception(IOException e) {
ModelAndView mav = new ModelAndView("exception");
mav.addObject("name", e.getClass().getSimpleName());
mav.addObject("message", e.getMessage());
return mav;
}
}
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>Hellossss</display-name>
<welcome-file-list>
<welcome-file>hello.htm</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-servlet.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
</web-app>
spring-servlet.xml
<mvc:annotation-driven/>
<context:component-scan base-package="com.spring.practice" />
<!-- View resolver -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix">
<value>/WEB-INF/jsp/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
exception.jsp
<html>
<head>
<title>Spring MVC @ControllerAdvice example</title>
</head>
<body>
<h1>Ops! Something went wrong</h1>
<b>${name}</b>: ${message}
</body>
</html>
hello.jsp
<html>
<head>
<title>Spring MVC Exception Handling</title>
</head>
<body>
<h1>Spring MVC Exception Handling</h1>
<a href="test.htm">Click here to test Exception handling</a>
</body>
</html>
Thank you in advance..
Complete error log
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server version name: Apache Tomcat/9.0.34
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server built: Apr 3 2020 12:02:52 UTC
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server version number: 9.0.34.0
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: OS Name: Windows 7
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: OS Version: 6.1
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Architecture: amd64
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Java Home: C:\Program Files\Java\jdk1.8.0_181\jre
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: JVM Version: 1.8.0_181-b13
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: JVM Vendor: Oracle Corporation
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: CATALINA_BASE: E:\eclipsephoton\.metadata\.plugins\org.eclipse.wst.server.core\tmp0
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: CATALINA_HOME: C:\Program Files\Apache Software Foundation\Tomcat 9.0
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dcatalina.base=E:\eclipsephoton\.metadata\.plugins\org.eclipse.wst.server.core\tmp0
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dcatalina.home=C:\Program Files\Apache Software Foundation\Tomcat 9.0
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dwtp.deploy=E:\eclipsephoton\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Djava.endorsed.dirs=C:\Program Files\Apache Software Foundation\Tomcat 9.0\endorsed
May 23, 2020 2:43:10 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dfile.encoding=Cp1252
May 23, 2020 2:43:10 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [C:\Program Files\Java\jdk1.8.0_181\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Program Files/Java/jre1.8.0_181/bin/server;C:/Program Files/Java/jre1.8.0_181/bin;C:/Program Files/Java/jre1.8.0_181/lib/amd64;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Program Files\Java\jdk1.8.0_151\bin;C:\Program Files\MySQL\MySQL Server 5.7\bin;C:\Program Files\Java\jdk1.8.0_92\bin;C:\Users\Dell\AppData\Local\Programs\Microsoft VS Code\bin;C:\Program Files\Java\jdk1.8.0_92\bin;C:\Windows\System32;C:\Users\Dell\Downloads\eclipse-jee-photon-R-win32-x86_64 (1)\eclipse;;.]
May 23, 2020 2:43:10 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-nio-8085"]
May 23, 2020 2:43:11 PM org.apache.catalina.startup.Catalina load
INFO: Server initialization in [1,296] milliseconds
May 23, 2020 2:43:11 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service [Catalina]
May 23, 2020 2:43:11 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet engine: [Apache Tomcat/9.0.34]
May 23, 2020 2:43:15 PM org.apache.jasper.servlet.TldScanner scanJars
INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
May 23, 2020 2:43:19 PM org.apache.jasper.servlet.TldScanner scanJars
INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
May 23, 2020 2:43:19 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext
May 23, 2020 2:43:19 PM org.springframework.web.context.ContextLoader initWebApplicationContext
INFO: Root WebApplicationContext: initialization started
May 23, 2020 2:43:20 PM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing Root WebApplicationContext: startup date [Sat May 23 14:43:20 IST 2020]; root of context hierarchy
May 23, 2020 2:43:20 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from ServletContext resource [/WEB-INF/spring-servlet.xml]
May 23, 2020 2:43:20 PM org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider registerDefaultFilters
INFO: JSR-250 'javax.annotation.ManagedBean' found and supported for component scanning
May 23, 2020 2:43:20 PM org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider registerDefaultFilters
INFO: JSR-250 'javax.annotation.ManagedBean' found and supported for component scanning
May 23, 2020 2:43:20 PM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@9bdf4e: defining beans [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping#0,org.springframework.format.support.FormattingConversionServiceFactoryBean#0,org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter#0,mainController,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.web.servlet.view.InternalResourceViewResolver#0]; root of factory hierarchy
May 23, 2020 2:43:20 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/test.htm] onto handler [com.spring.practice.MainController@723fd4ac]
May 23, 2020 2:43:20 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/hello.htm] onto handler [com.spring.practice.MainController@723fd4ac]
May 23, 2020 2:43:21 PM org.springframework.web.context.ContextLoader initWebApplicationContext
INFO: Root WebApplicationContext: initialization completed in 1669 ms
May 23, 2020 2:43:21 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring FrameworkServlet 'spring'
May 23, 2020 2:43:21 PM org.springframework.web.servlet.FrameworkServlet initServletBean
INFO: FrameworkServlet 'spring': initialization started
May 23, 2020 2:43:21 PM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing WebApplicationContext for namespace 'spring-servlet': startup date [Sat May 23 14:43:21 IST 2020]; parent: Root WebApplicationContext
May 23, 2020 2:43:21 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from ServletContext resource [/WEB-INF/spring-servlet.xml]
May 23, 2020 2:43:21 PM org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider registerDefaultFilters
INFO: JSR-250 'javax.annotation.ManagedBean' found and supported for component scanning
May 23, 2020 2:43:21 PM org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider registerDefaultFilters
INFO: JSR-250 'javax.annotation.ManagedBean' found and supported for component scanning
May 23, 2020 2:43:21 PM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@6cc45cf2: defining beans [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping#0,org.springframework.format.support.FormattingConversionServiceFactoryBean#0,org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter#0,mainController,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.web.servlet.view.InternalResourceViewResolver#0]; parent: org.springframework.beans.factory.support.DefaultListableBeanFactory@9bdf4e
May 23, 2020 2:43:21 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/test.htm] onto handler [com.spring.practice.MainController@63e98fde]
May 23, 2020 2:43:21 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/hello.htm] onto handler [com.spring.practice.MainController@63e98fde]
May 23, 2020 2:43:21 PM org.springframework.web.servlet.FrameworkServlet initServletBean
INFO: FrameworkServlet 'spring': initialization completed in 236 ms
May 23, 2020 2:43:21 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-nio-8085"]
May 23, 2020 2:43:21 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in [10,808] milliseconds
May 23, 2020 2:43:24 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [spring] in context with path [/Hellosss] threw exception
java.io.IOException: this is io exception
at com.spring.practice.MainController.test(MainController.java:22)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doInvokeMethod(HandlerMethodInvoker.java:710)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:167)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:414)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:402)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:552)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
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:53)
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:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Error on browser
HTTP Status 500 – Internal Server Error
Type Exception Report
Message this is io exception
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
java.io.IOException: this is io exception
com.spring.practice.MainController.test(MainController.java:22)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:498)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doInvokeMethod(HandlerMethodInvoker.java:710)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:167)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:414)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:402)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:771)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:552)
javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
Note The full stack trace of the root cause is available in the server logs.
</details>
# 答案1
**得分**: 0
我认为您需要将您的@ControllerAdvice类包含在包扫描中并尝试一下？否则，请将您的com.spring.test.GlobalHandler类放在正确的包中（com.spring.**practice**而不是com.spring.**test**）。
<context:component-scan base-package="com.spring.practice" />
<details>
<summary>英文:</summary>
I think you need to include your @ControllerAdvice class to the package-scan and have a try? Otherwise, place your com.spring.test.GlobalHandler class inside the right package (com.spring.**practice** instead of com.spring.**test**).
<context:component-scan base-package="com.spring.practice" />
</details>
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