springboot中 简单的SpringMvc全局异常处理

1.全局异常处理类：GlobalExceptionHandler.java

package com.lf.exception;

import java.util.HashMap;
import java.util.Map;

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

/**
 * @classDesc: 类描述:(全局异常捕获)
 * @author baobaolan
 * @createTime 2018年1月11日
 * @version v1.0
 */
@ControllerAdvice//利用ControllerAdvice注解，实现异常的全局监控
public class GlobalExceptionHandler {

    @ResponseBody
    @ExceptionHandler(RuntimeException.class)
    public Map<String,Object> exceptionHandler(){
        Map<String,Object> result = new HashMap<String, Object>();
        result.put("code", 0);
        result.put("msg", "请稍后重试，我们现在要杀程序员祭天！");
        return result;
    }

}

2.springboot启动类：ApplicationMain.java

package com.lf.application;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;

@ComponentScan(basePackages="com.lf")
@EnableAutoConfiguration//此注释自动载入应用程序所需的所有Bean
public class ApplicationMain {

    public static void main(String[] args) {
        SpringApplication.run(ApplicationMain.class, args);
    }

}

3.测试类: UserController.java

package com.lf.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class UserController {

    @RequestMapping("/test")
    public String test(){
        int i = 1 / 0;//自定义运行时异常
        return "test";
    }
}

4.页面测试