@ControllerAdvice 异常处理程序方法未被调用

Question

我正在 Spring MVC.I 中处理异常处理的示例演示应用程序，正在尝试 Exception Handling With @ControllerAdvice

我按照 this link 中描述的步骤进行操作。

但是当我运行我的应用程序出现以下错误时

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is com.test.core.ApplicationException

有关更多详细信息，以下是我正在处理的 classes

ApplicationException.java

public class ApplicationException extends RuntimeException{


/**
 * 
 */
private static final long serialVersionUID = -9061684361606685158L;
private ErrorStatus errorStatus;
private int msgNumber;
private Object []args;

public ApplicationException(){}

public ApplicationException(ErrorStatus errorStatus, int msgNumber,
        Object[] args) {
    this.errorStatus = errorStatus;
    this.msgNumber = msgNumber;
    this.args = args;
  }
    //getter setters
}

控制器class

ApplicationExceptionController.java

 @Controller
@RequestMapping("/exception")
public class ApplicationExceptionController {

@RequestMapping(value="/error",method=RequestMethod.GET)
@ResponseBody
public void helloException() 
{
    throw new ApplicationException(ErrorStatus.NotFound,1,new Object[]{"Website"});

  //here ErrorStatus is a enum class
}  
}

这是 GlobalExceptionHandler class

GlobalExceptionHandler.java

@ControllerAdvice
public class GlobalExceptionHandler {

@ExceptionHandler
public void notFount(){
    System.out.println("----------CaughtApplicationException-----------");
}
}

调度员-servlet.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:tx="http://www.springframework.org/schema/tx"  
xmlns:p="http://www.springframework.org/schema/p"      
xmlns:context="http://www.springframework.org/schema/context"  
xmlns:mvc="http://www.springframework.org/schema/mvc" 

xsi:schemaLocation=
    "http://www.springframework.org/schema/beans     
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.0.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">


<context:component-scan  base-package="com.test.controller,com.test.core" />
<mvc:annotation-driven />

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
    <property name="prefix" value="/WEB-INF/jsp/" />  
    <property name="suffix" value=".jsp" />   
</bean>  

 <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    <property name="messageConverters">
     <list> <ref bean="jsonConverter"/></list>
    </property>
</bean>

<bean id="jsonConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
     <property name="supportedMediaTypes" value="application/json" />
</bean>

我运行以上应用http://localhost:8080/SpringExceptionHandling/exception/error这个url

但我得到以下异常

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is com.test.core.ApplicationException
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:894)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

root cause

com.test.core.ApplicationException
com.test.controller.ApplicationExceptionController.helloException(ApplicationExceptionController.java:19)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:214)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:100)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:604)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:565)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

我经历了 @ControllerAdvice exception handler method are not get called 这个 link 但仍然遇到同样的问题请帮我弄清楚 solution.I 我没有得到这个异常的真正原因。

Answer 1

您需要声明异常，以便方法可以映射到异常类型。您有两种可能性，要么将异常声明为参数

public void notFount(ApplicationException exception){

或

将类型添加为 @ExceptionHandler 注释的值属性

 @ExceptionHandler(value = ApplicationException.class)

此外，您很可能遇到配置问题，因为您发布的错误 GlobalExceptionHandler 导致 servlet 无法启动，明确表示没有映射到异常类型方法。确保您正在扫描 GlobalExceptionHandler 所在的包裹，从外观上看，这很可能是您的问题

Answer 2

您的异常处理程序中缺少 @EnableWebMvc 注释。您的异常处理程序应该是这样的。

@EnableWebMvc
@ControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler({ApplicationException.class})
    public void notFount(){
        System.out.println("----------CaughtApplicationException-----------");
    }

    @ExceptionHandler({Exception.class})
    public void notFountGlobal(){
        System.out.println("----------CaughtApplicationException-----------");
    }

}

你还需要告诉异常处理方法你想在哪个方法中捕获哪个异常。最后，您可以指定一个方法，该方法可以捕获传递给它的所有其他异常 Exception.class。您 post 为我工作的代码片段。希望它能解决您的问题。

Answer 3

在我的例子中，处理程序方法没有被调用，因为方法签名中有额外的参数。

不工作：

@ExceptionHandler(NoHandlerFoundException.class)
public ModelAndView handle404(HttpServletRequest request, Exception e,  @RequestHeader(value = "referer", required = false) final String referer) {
    ...
}

referer 参数是导致处理程序方法未被调用的原因。去掉参数后问题解决

作品：

@ExceptionHandler(NoHandlerFoundException.class)
public ModelAndView handle404(HttpServletRequest request, Exception e) {
    ...
}

@ControllerAdvice 异常处理程序方法未被调用

@ControllerAdvice exception handler method not get called

java

spring

controller

exception-handling

spring-mvc