SpringMVC中异常捕获

如果SpringMVC的action中发生异常，我们想将其跳转到一个固定的错误页面，可以通过applicationContext.xml中增加如下配置实现:

    <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
        <property name="exceptionMappings">
            <props>
                <prop key="java.lang.ArithmeticException">/pages/common/error.jsp</prop>
            </props>
        </property>
    </bean>

例如，我的代码中有一个算数错误：

package org.lyk.action;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Locale;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

import org.lyk.vo.Emp;
import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.context.MessageSource;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;

@Controller
@RequestMapping("/pages/emp/*")
public class EmpAction
{
    @Resource
    MessageSource messageSource;

    @RequestMapping("echo")
    public void echo(String info,MultipartFile file1,MultipartFile file2) throws IOException
    {
        System.out.println("=======================");
        System.out.println(info);
        System.out.println(file1.getOriginalFilename());
        System.out.println(file2.getOriginalFilename());
        System.out.println(1/0);
        System.out.println("=======================");
    }

    @InitBinder
    public void dataBinder(WebDataBinder webDataBinder)
    {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        webDataBinder.registerCustomEditor(java.util.Date.class, new CustomDateEditor(sdf, true));
    }
}

此时的action发生异常，会跳转到/pages/common/error.jsp页面上去。