Springmvc自定義統一異常處理

1.默認異常處理（不友好）

 

2.自定義統一異常處理流程

1）demo-base中pom.xml修改

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>3.1.0</version>
    <scope>provided</scope>
</dependency>

2）自定義異常處理類-DemoExceptionResolver

在demo-base中定義DemoExceptionResolver，實現HandlerExceptionResolver接口便可

package com.demo.base.Exception;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

public class DemoExceptionResolver implements HandlerExceptionResolver {
    private static final Logger LOG = LoggerFactory.getLogger(DemoExceptionResolver.class);

    @Override
    public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex){
        response.setHeader("Content-type", "text/html;charset=UTF-8");
        response.setCharacterEncoding("UTF-8");

        PrintWriter pw = null;
        try {
            pw = response.getWriter();
        } catch (IOException e) {
            LOG.error(e.getMessage(),e);
        }

        if (ex instanceof DemoException) {
            pw.write(ex.getMessage());
        } else {
            pw.write("系統異常，請聯繫管理員");
        }

        return new ModelAndView();
    }
}

3）DemoExceptionResolver注入到Spring容器中

在demo-web中spring-mvc.xml配置:

<bean id="demoExceptionResolver" class="com.demo.base.Exception.DemoExceptionResolver"/>

4）運行測試結果

3.參考文章

http://www.voidcn.com/blog/eson_15/article/p-6069524.html