SpringBoot统一异常处理

概述

​ SpringBoot 提供了 @ControllerAdvice 、@RestControllerAdvice 注解可以实现统一异常处理，只需要在定义异常类加上以上注解即可。

自定义异常处理

定义统一异常处理

@RestControllerAdvice
public class GlobalExceptionHandler {

    private Logger logger = LoggerFactory.getLogger(getClass());

    /**
     *  拦截Exception类的异常
     * @param e
     * @return
     */
    @ExceptionHandler(Exception.class)
    @ResponseBody
    public Map<String,Object> exceptionHandler(Exception e){
        logger.error("系统异常Exception===",e);
        Map<String,Object> result = new HashMap<String,Object>();
        result.put("respCode", "9999");
        result.put("respMsg", "怎么又出错了");
        return result;
    }

    /**
     * 拦截 ServiceException 的异常
     * @param ex
     * @return
     */
    @ExceptionHandler(ServiceException.class)
    @ResponseBody
    public Map<String,Object> exceptionHandler(ServiceException ex){
        logger.info("自定义异常ServiceException：{}({})",ex.getMsg(), ex.getCode());
        Map<String,Object> result = new HashMap<String,Object>();
        result.put("respCode", ex.getCode());
        result.put("respMsg", ex.getMsg());
        return result;
    }

}

创建 controller 类

@RestController
@RequestMapping("/ex")
public class ExceptionController {

    private Logger logger = LoggerFactory.getLogger(getClass());

    @RequestMapping("/testEx")
    public String testEx() {
        logger.debug("testEx>>>>>>");
        throw new ServiceException("501","自定义ServiceException异常");
    }

    @RequestMapping("/testEx1")
    public String testEx1() {
        logger.debug("testEx1>>>>>>");
        int a = 1/0;
        return "sucesss";
    }

    @RequestMapping("/test")
    public String test() {
        logger.debug("test>>>>>>");
        return "sucesss";
    }
}

测试异常

http://127.0.0.1:8080/ex/test 正常访问

http://127.0.0.1:8080/ex/testEx 自定义异常

http://127.0.0.1:8080/ex/testEx1 系统异常

tomcat further occurrences of HTTP header parsing errors will be logged at DEBUG level.

原访问地址： http://localhost:8080/ex/test

改为：http://127.0.0.1:8080/ex/test