SpringMVC处理异常的三种方式

1 基于配置文件的处理 spring-mvc.xml中配置

   <!-- 配置文件的异常处理机制 -->

<bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">

<property name="exceptionAttribute" value="ex"></property>

<property name="exceptionMappings">

<props>

<prop key="java.lang.Exception">error</prop>

</props>

</property>

</bean>

2 通过实现HandlerExceptionResolver接口自定义异常处理类  

package com.hzlssd.company.controller;

import java.util.HashMap;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.HandlerExceptionResolver;

import org.springframework.web.servlet.ModelAndView;

/**

 * 通过实现HandlerExceptionResolver接口自定义异常处理类

 * @author QY

 */

public class MyMappingExceptionResolver implements HandlerExceptionResolver{

@Override

public ModelAndView resolveException(HttpServletRequest req,

HttpServletResponse res, Object obj, Exception ex) {

Map<String,Object> model = new HashMap<String,Object>();

model.put("ex",ex);

return new ModelAndView("error",model);

}

}

<!-- 注解开启自定义异常处理类 -->

<bean id="exceptionHandler" class="com.hzlssd.company.controller.MyMappingExceptionResolver" />

3 通过注解的方式自定义异常处理方法,让可能抛出异常的类继承该类，从而处理异常

package com.hzlssd.company.controller;

import javax.servlet.http.HttpServletRequest;

import org.springframework.web.bind.annotation.ExceptionHandler;

/**

 * 通过注解的方式自定义异常处理方法,让可能抛出异常的类继承该类，从而处理异常

 * @author QY

 */

public class BaseExceptionAnn{

@ExceptionHandler

public String execute(HttpServletRequest request,Exception ex){

request.setAttribute("ex", ex);

return "error";

}

}

抛出异常类要继承自定义的类

@Controller

@RequestMapping("/login")

public class HelloController extends BaseExceptionAnn{

}