自定义异常

public class AobpException extends Exception implements ExceptionConstant {
    private int code;

    private String msg;

    public AobpException(int code, String msg) {
        this.code = code;
        this.msg = msg;
    }

    public int getCode() {
        return code;
    }


    public String getMsg() {
        return msg;
    }


    public static AobpException notFoundException() {
        return new AobpException(NOT_FOUND, NOT_FOUND_MSG);
    }

    public static AobpException notFoundException(String msg) {
        return new AobpException(NOT_FOUND, msg);
    }

    public static AobpException paramsInvalidException() {
        return new AobpException(PARAMS_INVALID, PARAMS_INVALID_MSG);
    }

    public static AobpException paramsInvalidException(String msg) {
        return new AobpException(PARAMS_INVALID, msg);
    }

    public static AobpException userNotLoginException() {
        return new AobpException(UNAUTHORIZED, USER_NOT_LOGIN_MSG);
    }

    public static AobpException noPermissionException() {
        return new AobpException(NOT_FOUND, PERMISSION_DENIED_MSG);
    }

    public static AobpException userAlreadyExist() {
        return new AobpException(FORBIDDEN, USER_EXIST_MSG);
    }

}

public interface ResultCode {
    int SUCCESS = 200;
    int BAD_REQUEST = 400;
    int UNAUTHORIZED = 401;
    int FORBIDDEN = 403;
    int NOT_FOUND = 404;
    int METHOD_ALLOWED = 405;
    int PARAMS_INVALID = 412;
    int INTERNAL_ERR = 500;
}

public interface ExceptionConstant extends ResultCode {
    String NOT_FOUND_MSG = "Not Found";
    String PARAMS_INVALID_MSG = "Params Invalid";
    String USER_NOT_LOGIN_MSG = "User Not Login";
    String USER_EXIST_MSG = "User Already Exist";
    String PERMISSION_DENIED_MSG = "Permission Denied";
    String UNKNOWN_ERROR = "Server failed";
    
    String SYSTEM_EXCEPTION_MESSAGE= "系统异常,请联系管路员";
}

public interface StatusConstant extends ResultCode {
    String STATUS_OK = "OK";
    String STATUS_NOT_FOUND = "Not Found";
    String STATUS_PARAMS_INVALID = "Params Invalid";
    String STATUS_INTERNAL_ERR = "Server Internal Error";
}

public class Status implements StatusConstant {
    private int code;
    private String statusMsg;

    public Status() {

    }

    public Status(int code, String statusMsg) {
        this.code = code;
        this.statusMsg = statusMsg;
    }

    public int getCode() {
        return code;
    }

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

    public String getStatusMsg() {
        return statusMsg;
    }

    public void setStatusMsg(String statusMsg) {
        this.statusMsg = statusMsg;
    }

    public static Status ok() {
        return new Status(SUCCESS, STATUS_OK);
    }

    public static Status ok(String msg) {
        return new Status(SUCCESS, msg);
    }

    public static Status notFound() {
        return new Status(NOT_FOUND, STATUS_NOT_FOUND);
    }

    public static Status paramsInvalid() {
        return new Status(PARAMS_INVALID, STATUS_PARAMS_INVALID);
    }

    public static Status error() {
        return new Status(INTERNAL_ERR, STATUS_INTERNAL_ERR);
    }

    public static Status error(String msg) {
        return new Status(INTERNAL_ERR, msg);
    }
}