Springboot通用返回

不用spring的异常，抛出500很危险

通用返回类

public class Result<T> implements Serializable {
    public final static int SUCCESS = 0;
    public final static int FAILED = -1;

    private final static String SUCCESS_MSG = "OK";

    public static <T> Result<T> newSuccess(T result) {
        return new Result<>(SUCCESS, result, SUCCESS_MSG);
    }

    public static <T> Result<T> newFailed(String msg) {
        return new Result<>(FAILED, null, msg);
    }

    /**
     * 返回码
     */
    private int status;

    /**
     * 正确时的返回结果
     */
    private T result;

    /**
     * 错误信息
     */
    private String msg;
}

用范型解决结果的类型
统一有返回码，错误信息，以及res包含的data数据（json）

通用异常类

public class CommonException extends RuntimeException {
    public static final int ERROR_CODE_DEFAULT = -1;

    private final int status;
    private final String msg;

    public CommonException(int status, String msg) {
        super(msg);
        this.msg = msg;
        this.status = status;
    }

    public CommonException(String msg) {
        super(msg);
        this.msg = msg;
        this.status = ERROR_CODE_DEFAULT;
    }

    public CommonException(int status, String msg, Throwable cause) {
        super(msg);
        this.msg = msg;
        this.status = status;
    }

    public int getStatus() {
        return status;
    }

    public String getMsg() {
        return msg;
    }
}

继承运行时异常

springboot 捕捉自定义异常

@ControllerAdvice
public class ExceptionAdvice {

    @ExceptionHandler(Exception.class)
    @ResponseBody
    public Result<?> handleException(Throwable throwable) {
        log.error("通用异常处理", throwable);
        return Result.newFailed(throwable.getMessage());
    }
}

使用切面编程捕捉异常，并调用通用返回类Result