SpringMVC异常处理知识点总结
- ResultCode
- CommonCode
- UserCode
- CustomException
- ExceptionCatch
org.springframework.boot spring-boot-starter-parent 2.1.9.RELEASE org.springframework.boot spring-boot-starter-web
统一异常处理
@ControllerAdvice
@ExceptionHandler
@ResponseBody
packagecom.mozq.mybatisplus.mybatisplus01.exception;
importcom.mozq.mybatisplus.mybatisplus01.model.CommonCode;
importcom.mozq.mybatisplus.mybatisplus01.model.Result;
importorg.springframework.web.bind.annotation.ControllerAdvice;
importorg.springframework.web.bind.annotation.ExceptionHandler;
importorg.springframework.web.bind.annotation.ResponseBody;
@ControllerAdvice
publicclassExceptionCatch{
@ExceptionHandler(Exception.class)
@ResponseBody
publicResulthandleException(Exceptione){
returnResult.of(CommonCode.SERVER_ERROR);
}
@ExceptionHandler(CustomException.class)
@ResponseBody
publicResulthandleException(CustomExceptione){
returnResult.of(e.getResultCode());
}
}
packagecom.mozq.mybatisplus.mybatisplus01.exception;
importcom.mozq.mybatisplus.mybatisplus01.model.ResultCode;
publicclassCustomExceptionextendsRuntimeException{
privateResultCoderesultCode;
publicCustomException(ResultCoderesultCode){
super("错误码："+resultCode.code()+"错误消息："+resultCode.message());
this.resultCode=resultCode;
}
publicResultCodegetResultCode(){
returnresultCode;
}
}
异常处理测试
@RestController
@RequestMapping("/demo")
publicclassDemoController{
//单个参数非空校验，使用@RequestParam
@RequestMapping("/get")
publicStringgetName(@RequestParamStringname){
returnname;
}
/*
publicResultmyCustomException(booleanflag)
不传参数默认false
0-false1-true其他数字抛异常MethodArgumentTypeMismatchException
正确方式：
localhost:8080/demo/myCustomException?flag=1
localhost:8080/demo/myCustomException?flag=true
*/
@RequestMapping("/myCustomException")
publicResultmyCustomException(booleanflag){
if(flag){
thrownewCustomException(UserCode.USER_NOT_EXIST);
}
returnResult.ok();
}
}
统一响应结果
packagecom.mozq.mybatisplus.mybatisplus01.model;
importlombok.Data;
importjava.util.LinkedHashMap;
@Data
publicclassResultextendsLinkedHashMap{
privatestaticfinalStringSUCCESS="success";
privatestaticfinalStringCODE="code";
privatestaticfinalStringMESSAGE="message";
privatestaticfinalStringRESULT="result";
publicstaticResultof(ResultCoderesultCode){
ResultR=newResult();
R.put(SUCCESS,resultCode.success());
R.put(CODE,resultCode.code());
R.put(MESSAGE,resultCode.message());
returnR;
}
publicstaticResultok(){
returnResult.of(CommonCode.SUCCESS);
}
publicstaticResultokWithResult(Objectdata){
ResultR=Result.of(CommonCode.SUCCESS);
R.put(RESULT,data);
returnR;
}
publicstaticResultfail(){
returnResult.of(CommonCode.FAIL);
}
}
响应状态码
packagecom.mozq.mybatisplus.mybatisplus01.model;
publicinterfaceResultCode{
booleansuccess();
Stringcode();
Stringmessage();
}
packagecom.mozq.mybatisplus.mybatisplus01.model;
publicenumCommonCodeimplementsResultCode{
SUCCESS(true,"000000","处理成功"),
FAIL(true,"000001","处理失败"),
INVALID_PARAM(false,"100000","无效的参数"),
SERVER_ERROR(false,"999999","系统忙，请稍后重试");
privatebooleansuccess;
privateStringcode;
privateStringmessage;
CommonCode(booleansuccess,Stringcode,Stringmessage){
this.success=success;
this.code=code;
this.message=message;
}
@Override
publicbooleansuccess(){
returnsuccess;
}
@Override
publicStringcode(){
returncode;
}
@Override
publicStringmessage(){
returnmessage;
}
}
packagecom.mozq.mybatisplus.mybatisplus01.model;
publicenumUserCodeimplementsResultCode{
USER_USERNAME_ALREADY_EXIST(false,"200000","用户名已经存在"),
USER_TELEPHONE_ALREADY_USED(false,"200001","电话号码已经存在"),
USER_NOT_EXIST(false,"200002","用户不存在");
privatebooleansuccess;
privateStringcode;
privateStringmessage;
UserCode(booleansuccess,Stringcode,Stringmessage){
this.success=success;
this.code=code;
this.message=message;
}
@Override
publicbooleansuccess(){
returnsuccess;
}
@Override
publicStringcode(){
returncode;
}
@Override
publicStringmessage(){
returnmessage;
}
}
以上就是本次介绍的关于SpringMVC异常处理的相关知识点，感谢大家的学习和对毛票票的支持。
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