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Veeker Boot Validation package
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package com.veeker.validation.handler;

import com.veeker.core.exceptions.BusinessException;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.validation.BindException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.validation.ConstraintViolationException;

/**
 * 全局异常处理类
 *
 * @author ：qiaoliang
 */
@ResponseBody
@ControllerAdvice
public class ExceptionAdviceHandler {

    /**
     * 处理Get请求中 使用@Valid 验证路径中请求实体校验失败后抛出的异常，详情继续往下看代码
     *
     * @author ：qiaoliang
     * @param e : BindException异常
     * @return org.springframework.http.ResponseEntity
     */
    @ExceptionHandler(BindException.class)
    public ResponseEntity bindExceptionHandler(BindException e) {
        return ResponseEntity.status(HttpStatus.CONFLICT)
                .body(e.getAllErrors().get(0).getDefaultMessage());
    }

    /**
     * 处理请求参数格式错误 @RequestParam上validate失败后抛出的异常是javax.validation.ConstraintViolationException
     *
     * @author ：qiaoliang
     * @param e : ConstraintViolationException异常
     * @return org.springframework.http.ResponseEntity
     */
    @ExceptionHandler(ConstraintViolationException.class)
    public ResponseEntity constraintViolationExceptionHandler(ConstraintViolationException e) {
        return ResponseEntity.status(HttpStatus.CONFLICT)
                .body(e.getConstraintViolations().iterator().next().getMessage());
    }

    /**
     * 处理请求参数格式错误 @RequestBody上validate失败后抛出的异常是MethodArgumentNotValidException异常。
     *
     * @author ：qiaoliang
     * @param e : MethodArgumentNotValidException异常
     * @return org.springframework.http.ResponseEntity
     */
    @ExceptionHandler(MethodArgumentNotValidException.class)
    public ResponseEntity methodArgumentNotValidExceptionHandler(
            MethodArgumentNotValidException e) {
        return ResponseEntity.status(HttpStatus.CONFLICT)
                .body(e.getBindingResult().getAllErrors().get(0).getDefaultMessage());
    }

    /**
     * 自定义异常捕捉
     *
     * @author ：qiaoliang
     * @param e : BusinessException异常
     * @return org.springframework.http.ResponseEntity
     */
    @ExceptionHandler(BusinessException.class)
    public ResponseEntity baseException(BusinessException e) {
        return ResponseEntity.status(e.getErrorType().getStatus()).body(e.getMessage());
    }

}