20190710SPRINGBOOT统一异常处理

package com.wh.controller;

import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpStatus;
import org.springframework.http.converter.HttpMessageNotReadableException;
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.MissingServletRequestParameterException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.NoHandlerFoundException;

import javax.servlet.http.HttpServletRequest;
import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import javax.validation.ValidationException;
import java.sql.SQLException;
import java.util.Set;

/**
 * @author xxx
 * @title: GlobalControllerExceptionHandler
 * @projectName mydemo
 * @description: TODO
 * @date 2019/7/1014:31
 */
@Slf4j
@RestController
public class GlobalControllerExceptionHandler {
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    @ExceptionHandler(MissingServletRequestParameterException.class)
    public String handleMissingServletRequestParameterException(MissingServletRequestParameterException e) {
        log.error("缺少请求参数", e);
        return "缺少请求参数";
    }

    @ResponseStatus(HttpStatus.BAD_REQUEST)
    @ExceptionHandler(HttpMessageNotReadableException.class)
    public String handleHttpMessageNotReadableException(HttpMessageNotReadableException e) {
        log.error("参数解析失败", e);
        return "参数解析失败";
    }

    @ResponseStatus(HttpStatus.BAD_REQUEST)
    @ExceptionHandler(MethodArgumentNotValidException.class)
    public String handleMethodArgumentNotValidException(MethodArgumentNotValidException e) {
        log.error("参数验证失败", e);
        BindingResult result = e.getBindingResult();
        FieldError error = result.getFieldError();
        String field = error.getField();
        String code = error.getDefaultMessage();
        String message = String.format("%s:%s", field, code);
        return "参数验证失败="+message;
    }

    @ResponseStatus(HttpStatus.BAD_REQUEST)
    @ExceptionHandler(BindException.class)
    public String handleBindException(BindException e) {
        log.error("参数绑定失败", e);
        BindingResult result = e.getBindingResult();
        FieldError error = result.getFieldError();
        String field = error.getField();
        String code = error.getDefaultMessage();
        String message = String.format("%s:%s", field, code);
        return "参数绑定失败="+message;
    }

    @ResponseStatus(HttpStatus.BAD_REQUEST)
    @ExceptionHandler(ConstraintViolationException.class)
    public String handleServiceException(ConstraintViolationException e) {
        log.error("参数验证失败", e);
        Set<ConstraintViolation<?>> violations = e.getConstraintViolations();
        ConstraintViolation<?> violation = violations.iterator().next();
        String message = violation.getMessage();
        return "参数验证失败" + message;
    }

    @ResponseStatus(HttpStatus.BAD_REQUEST)
    @ExceptionHandler(ValidationException.class)
    public String handleValidationException(ValidationException e) {
        log.error("参数验证失败", e);
        return "参数验证失败";
    }

    @ResponseStatus(HttpStatus.NOT_FOUND)
    @ExceptionHandler(NoHandlerFoundException.class)
    public String noHandlerFoundException(NoHandlerFoundException e) {
        log.error("Not Found", e);
        return "Not Found="+e;
    }

    @ResponseStatus(HttpStatus.METHOD_NOT_ALLOWED)
    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
    public String handleHttpRequestMethodNotSupportedException(HttpRequestMethodNotSupportedException e) {
        log.error("不支持当前请求方法", e);
        return "request_method_not_supported";
    }

    @ResponseStatus(HttpStatus.UNSUPPORTED_MEDIA_TYPE)
    @ExceptionHandler(HttpMediaTypeNotSupportedException.class)
    public String handleHttpMediaTypeNotSupportedException(HttpMediaTypeNotSupportedException e) {
        log.error("不支持当前媒体类型", e);
        return "\"content_type_not_supported\"";
    }

    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    @ExceptionHandler(SQLException.class)
    public String handleSQLException(Exception e){
        log.error("SQLException Occured:: URL=",e);
        return "操作数据库出现异常：字段重复、有外键关联等";
    }

    @ExceptionHandler(value = Exception.class)
    public String defaultErrorHandler(Exception e){
        log.error("Exception", e);
        return "其它异常：" + e.getMessage();
    }
}