后端：统一异常处理类

你的名字 2024-03-16 16:55 199阅读 0赞

#### 1、定义返回信息类Result.java ####

/*
    * 统一返回前端结果类
    * */
    public class Result<T> {
        /*返回码*/
        private String code;
        /*返回中文信息*/
        private String msg;
        /*返回的对象类*/
        private T data;
        /*不带参数的成功返回*/
        public static Result success(){
            Result result = new Result<>();
            result.setCode(ResultCode.SUCCESS.code);
            result.setMsg(ResultCode.SUCCESS.msg);
            return result;
        }
        /*带参数的成功返回*/
        public static <T> Result<T> success(T data){
            Result<T> result = new Result<>(data);
            result.setCode(ResultCode.SUCCESS.code);
            result.setMsg(ResultCode.SUCCESS.msg);
            return result;
        }
        /*不带参数的失败返回*/
        public static Result error(){
            Result result = new Result<>();
            result.setCode(ResultCode.ERROR.code);
            result.setMsg(ResultCode.ERROR.msg);
            return result;
        }
        /*带错误提示的失败返回*/
        public static Result error(String code,String msg){
            Result result = new Result<>();
            result.setCode(code);
            result.setMsg(msg);
            return result;
        }
    
        public Result(T data) {
            this.data = data;
        }
    
        public Result() {
        }
    
        public String getCode() {
            return code;
        }
    
        public void setCode(String 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;
        }
    }

#### 2、定义枚举类ResultCode.java ####

/*
    统一返回码
    * */
    public enum ResultCode {
        SUCCESS("0","成功"),
        ERROR("-1","异常信息"),
        PARAM_ERROR("1001","系统异常"),
        USER_EXIST_ERROR("20001","用户已存在"),
        USER_ACCOUNT_ERROR("20002","账户或密码错误");
        public String code;
        public String msg;
    
        ResultCode(String code, String msg) {
            this.code = code;
            this.msg = msg;
        }
    }