SpringBoot框架统一异常处理

http请求返回的最外层对象：

public class Result {

    /** 错误码. */
    private Integer code;

    /** 提示信息. */
    private String msg;

    /** 具体的内容. */
    private T data;

    public Integer getCode() {
        return code;
    }

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

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public T getData() {
        return data;
    }

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

错误结果返回工具类：

public class ResultUtil {

    public static Result success(Object object) {
        Result result = new Result();
        result.setCode(0);
        result.setMsg("成功");
        result.setData(object);
        return result;
    }

    public static Result success() {
        return success(null);
    }

    public static Result error(Integer code, String msg) {
        Result result = new Result();
        result.setCode(code);
        result.setMsg(msg);
        return result;
    }
}

异常统一管理：

public enum ResultEnum {
    UNKONW_ERROR(-1, "未知错误"),
    SUCCESS(0, "成功"),
    PRIMARY_SCHOOL(100, "我猜你可能还在上小学"),
    MIDDLE_SCHOOL(101, "你可能在上初中"),

    ;

    private Integer code;

    private String msg;

    ResultEnum(Integer code, String msg) {
        this.code = code;
        this.msg = msg;
    }

    public Integer getCode() {
        return code;
    }

    public String getMsg() {
        return msg;
    }
}

定义统一异常：

public class GirlException extends RuntimeException{

    private Integer code;

    public GirlException(ResultEnum resultEnum) {
        super(resultEnum.getMsg());
        this.code = resultEnum.getCode();
    }

    public Integer getCode() {
        return code;
    }

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

统一异常处理：

import com.imooc.domain.Result;
import com.imooc.exception.GirlException;
import com.imooc.utils.ResultUtil;
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;


@ControllerAdvice
public class ExceptionHandle {

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

    @ExceptionHandler(value = Exception.class)
    @ResponseBody
    public Result handle(Exception e) {
        if (e instanceof GirlException) {
            GirlException girlException = (GirlException) e;
            return ResultUtil.error(girlException.getCode(), girlException.getMessage());
        }else {
            logger.error("【系统异常】{}", e);
            return ResultUtil.error(-1, "未知错误");
        }
    }
}

调用：

@GetMapping(value = "girls/getAge/{id}")
    public void getAge(@PathVariable("id") Integer id) throws Exception{
        girlService.getAge(id);
    }