SpringBoot 2.0 은 Rest 스타일 데이터 구조 와 통일 이상 처 리 를 통일 적 으로 되 돌려 줍 니 다.

package com.futao.springmvcdemo.model.system;

import org.joda.time.DateTime;

import java.sql.Timestamp;

/**
 * @author futao
 * Created on 2018/9/22-21:47.
 *     Rest       
 */
public class RestResult {
    /**
     *       
     */
    private boolean success;
    /**
     *        code   
     */
    private String code;
    /**
     *         ，            
     */
    private Object data;
    /**
     *            ，            
     */
    private Object errorMessage;
    /**
     *        （                   ，                        ，             ）
     */
    private Timestamp currentTime;

    public RestResult() {
    }

    @Override
    public String toString() {
        return "RestResult{" +
                "success=" + success +
                ", code='" + code + '\'' +
                ", data=" + data +
                ", errorMessage=" + errorMessage +
                ", currentTime=" + currentTime +
                '}';
    }

    public RestResult(boolean success, String code, Object data, Object errorMessage) {
        this.success = success;
        this.code = code;
        this.data = data;
        this.errorMessage = errorMessage;
        this.currentTime = new Timestamp(new DateTime().getMillis());
    }

    public boolean isSuccess() {
        return success;
    }

    public void setSuccess(boolean success) {
        this.success = success;
    }

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public Object getData() {
        return data;
    }

    public void setData(Object data) {
        this.data = data;
    }

    public Object getErrorMessage() {
        return errorMessage;
    }

    public void setErrorMessage(Object errorMessage) {
        this.errorMessage = errorMessage;
    }

    public Timestamp getCurrentTime() {
        return currentTime;
    }

    public void setCurrentTime(Timestamp currentTime) {
        this.currentTime = currentTime;
    }
}

package com.futao.springmvcdemo.foundation;

import com.alibaba.fastjson.JSONObject;
import com.futao.springmvcdemo.model.system.RestResult;
import org.apache.commons.lang3.StringUtils;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**
 * @author futao
 * Created on 2018/9/22-20:24.
 *   Rest     
 */
@ControllerAdvice(basePackages = "com.futao.springmvcdemo.controller")
public class RestResultWrapper implements ResponseBodyAdvice<Object> {
    @Override
    public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType, Class<? extends HttpMessageConverter<?>> selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {
        RestResult result = new RestResult(true, "0", body, null);
        return JSONObject.toJSON(result);
    }
}

   @GetMapping("get")
   public User get() {
       User user = new User();
       user.setUsername("NiuBist");
       user.setId("123");
       user.setAge("18");
       user.setEmail("[email protected]");
       user.setMobile("12312321312");
       user.setAddress("      ");
       return user;
   }

package com.futao.springmvcdemo.model.entity.constvar;

/**
 * @author futao
 * Created on 2018/9/21-15:29.
 *        
 *      ：   01     
 * 001          
 *          
 */
public final class ErrorMessage {
    public static final String SYSTEM_EXCEPTION = "    ，     ";
    public static final String NOT_LOGIN = "01001_            ，     ";
    public static final String MOBILE_ALREADY_REGISTER = "01002_          ";
    public static final String LOGIC_EXCEPTION = "01003_   ，        ";
}

package com.futao.springmvcdemo.foundation;

/**
 * @author futao
 * Created on 2018/9/20-15:22.
 *        
 */
public class LogicException extends RuntimeException {
    /**
     *     
     */
    private String errorMsg;
    /**
     *    
     */
    private String code;

    public String getErrorMsg() {
        return errorMsg;
    }

    public void setErrorMsg(String errorMsg) {
        this.errorMsg = errorMsg;
    }

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    private LogicException(String errorMsg) {
        super(errorMsg);
        this.code = errorMsg.substring(0, 5);
        this.errorMsg = errorMsg.substring(6);
    }

    /**
     *       
     *
     * @param errorMsg
     * @return
     */
    public static LogicException le(String errorMsg) {
        return new LogicException(errorMsg);
    }
}

package com.futao.springmvcdemo.foundation;

import com.alibaba.fastjson.JSONObject;
import com.futao.springmvcdemo.model.entity.constvar.ErrorMessage;
import com.futao.springmvcdemo.model.system.RestResult;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author futao
 * Created on 2018/9/21-15:13.
 *       ，
 */
@ControllerAdvice
public class GlobalExceptionHandler {

    private static final Logger logger = LoggerFactory.getLogger(GlobalExceptionHandler.class);

    @ExceptionHandler(value = Exception.class)
    @ResponseBody
    public Object logicExceptionHandler(HttpServletRequest request, Exception e, HttpServletResponse response) {
        //     ，      -1，          ，     
        RestResult result = new RestResult(false, "-1", e.getMessage(), ErrorMessage.SYSTEM_EXCEPTION);
        //         ，             
        if (e instanceof LogicException) {
            LogicException logicException = (LogicException) e;
            result.setCode(logicException.getCode());
            result.setErrorMessage(logicException.getErrorMsg());
        } else {
            //            
            logger.error("    :" + e.getMessage(), e);
        }
        return JSONObject.toJSON(result);
    }
}

package com.futao.springmvcdemo.controller;

import com.futao.springmvcdemo.foundation.LogicException;
import com.futao.springmvcdemo.model.entity.constvar.ErrorMessage;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author futao
 * Created on 2018/9/23-0:28.
 *           
 */
@RequestMapping(path = "exception", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@RestController
public class ExceptionTestController {

    /**
     *       
     */
    @GetMapping(path = "logicException")
    public void logicException() {
        throw LogicException.le(ErrorMessage.LOGIC_EXCEPTION);
    }

    /**
     *     
     */
    @GetMapping(path = "systemException")
    public void systemException() {
        throw new NullPointerException("    ，  !!!");
    }
}