个人博客开发之blog-api项目统一全局异常处理和参数验证

本文主要是介绍个人博客开发之blog-api项目统一全局异常处理和参数验证，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

前言

项目开发中异常捕获，抛出,记录，也是非常重要的，便于我们以后项目bug定位追踪，

Hibernate Validator 参数校验

通过整合spring-boot-starter-validation进行全局参数校验

  <!--参数校验--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-validation</artifactId></dependency>

具体使用请参考我这两篇文章

SpringBoot Validation优雅的全局参数校验

SpringBoot Validation详解自定校验和分组校验

全局异常捕获GlobalExceptionHandler

package cn.soboys.core;import cn.hutool.core.collection.CollectionUtil;
import cn.hutool.core.util.StrUtil;
import cn.soboys.core.authentication.AuthenticationException;
import cn.soboys.core.ret.Result;
import cn.soboys.core.ret.ResultCode;
import cn.soboys.core.ret.ResultResponse;
import org.springframework.validation.BindException;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.HttpMediaTypeNotSupportedException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.NoHandlerFoundException;import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import javax.validation.Path;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;/*** @author kenx* @version 1.0* @date 2021/6/17 20:19* 全局异常统一处理*/
@RestControllerAdvice
public class GlobalExceptionHandler {/*** 处理 json 请求体调用接口对象参数校验失败抛出的异常*/@ExceptionHandler(MethodArgumentNotValidException.class)public Result jsonParamsException(MethodArgumentNotValidException e) {BindingResult bindingResult = e.getBindingResult();List errorList = CollectionUtil.newArrayList();for (FieldError fieldError : bindingResult.getFieldErrors()) {String msg = String.format("%s%s；", fieldError.getField(), fieldError.getDefaultMessage());errorList.add(msg);}return ResultResponse.failure(ResultCode.PARAMS_IS_INVALID, errorList);}/*** 处理单个参数校验失败抛出的异常*/@ExceptionHandler(ConstraintViolationException.class)public Result ParamsException(ConstraintViolationException e) {List errorList = CollectionUtil.newArrayList();Set<ConstraintViolation<?>> violations = e.getConstraintViolations();for (ConstraintViolation<?> violation : violations) {StringBuilder message = new StringBuilder();Path path = violation.getPropertyPath();String[] pathArr = StrUtil.splitToArray(path.toString(), ".");String msg = message.append(pathArr[1]).append(violation.getMessage()).toString();errorList.add(msg);}return ResultResponse.failure(ResultCode.PARAMS_IS_INVALID, errorList);}/*** @param e* @return 处理 form data方式调用接口对象参数校验失败抛出的异常*/@ExceptionHandler(BindException.class)public Result formDaraParamsException(BindException e) {List<FieldError> fieldErrors = e.getBindingResult().getFieldErrors();List<String> collect = fieldErrors.stream().map(o -> o.getField() + o.getDefaultMessage()).collect(Collectors.toList());return ResultResponse.failure(ResultCode.PARAMS_IS_INVALID, collect);}/*** 请求方法不被允许异常*/@ExceptionHandler(HttpRequestMethodNotSupportedException.class)public Result httpRequestMethodNotSupportedException(HttpRequestMethodNotSupportedException e) {return ResultResponse.failure(ResultCode.METHOD_NOT_ALLOWED);}/*** @param e* @return Content-Type/Accept 异常* application/json* application/x-www-form-urlencoded*/@ExceptionHandler(HttpMediaTypeNotSupportedException.class)public Result httpMediaTypeNotSupportedException(HttpMediaTypeNotSupportedException e) {return ResultResponse.failure(ResultCode.BAD_REQUEST);}/*** handlerMapping  接口不存在跑出异常** @param e* @return*/@ExceptionHandler(NoHandlerFoundException.class)public Result noHandlerFoundException(NoHandlerFoundException e) {return ResultResponse.failure(ResultCode.NOT_FOUND, e.getMessage());}/*** 认证异常* @param e* @return*/@ExceptionHandler(AuthenticationException.class)public Result UnNoException(AuthenticationException e) {return ResultResponse.failure(ResultCode.UNAUTHORIZED,e.getMessage());}/**** @param e 未知异常捕获* @return*/@ExceptionHandler(Exception.class)public Result UnNoException(Exception e) {return ResultResponse.failure(ResultCode.INTERNAL_SERVER_ERROR, e.getMessage());}
}