标签：display tostring access ror public sed 传递 src gif
Result<T>类功能：封装需要向前端传递的数据。
Result<T>类的内部构造：在内部封装三个元素，code，msg，T data；和两个构造方法，一个用来传递成功信息，另一个用来传递失败信息。
1 package com.app.miaosha.Result; 2 3 import lombok.Data; 4 5 @Data 6 public class Result<T> { 7 private int code; 8 private String msg; 9 private T data; 10 11 12 private Result(T data){ 13 this.code=0; 14 this.msg="success"; 15 this.data=data; 16 } 17 18 private Result(CodeMsg msg){ 19 if (msg == null) { 20 return; 21 } 22 this.code = msg.getCode(); 23 this.msg = msg.getMsg(); 24 } 25 26 27 public static <T> Result<T> success(T data) { 28 return new Result<T>(data); 29 } 30 public static <T> Result<T> error(CodeMsg codeMsg){ 31 return new Result<T>(codeMsg); 32 } 33 34 }
为方便用户传输失败信息而建立。包括两个参数：code，message。
package com.app.miaosha.Result; import lombok.Data; @Data public class CodeMsg { private int code; private String msg; //通用异常 public static CodeMsg SERVER_ERROR = new CodeMsg(500100, "服务端异常！"); public static CodeMsg BIND_ERROR = new CodeMsg(500101, "参数校验异常：%s!"); public static CodeMsg REQUEST_ILLEGAL = new CodeMsg(500102, "请求非法！"); public static CodeMsg ACCESS_LIMIT_REACHED = new CodeMsg(500103, "访问太频繁！"); //登录模块 5002XX public static CodeMsg SESSION_ERROR = new CodeMsg(500210, "Session不存在或者已经失效！"); public static CodeMsg PASSWORD_EMPTY = new CodeMsg(500211, "登录密码不能为空！"); public static CodeMsg MOBILE_EMPTY = new CodeMsg(500212, "手机号码不能为空！"); public static CodeMsg MOBILE_ERROR = new CodeMsg(500213, "手机号码格式错误！"); public static CodeMsg MOBILE_NOT_EXIST = new CodeMsg(500214, "用户不存在！"); public static CodeMsg PASSWORD_ERROR = new CodeMsg(500215, "密码错误！"); public static CodeMsg USER_NO_LOGIN = new CodeMsg(500216, "用户未登录！"); //订单模块 5004XX public static CodeMsg ORDER_NOT_EXIST = new CodeMsg(500400, "订单不存在！"); //秒杀模块 5005XX public static CodeMsg SECKILL_OVER = new CodeMsg(500500, "商品已经秒杀完毕！"); public static CodeMsg REPEATE_SECKILL = new CodeMsg(500501, "不能重复秒杀！"); public static CodeMsg SECKILL_FAIL = new CodeMsg(500502, "秒杀失败！"); private CodeMsg(int code, String msg) { this.code = code; this.msg = msg; } @Override public String toString() { return "CodeMsg{" + "code=" + code + ", msg=‘" + msg + ‘\‘‘ + ‘}‘; } }
Java秒杀系统---1.使用Result<>向前端传递数据
标签：display tostring access ror public sed 传递 src gif
原文地址：https://www.cnblogs.com/deijiawoyu/p/12662599.html
