校园商铺-4店铺注册功能模块-4Dto之ShopExecution的实现
1. DTO:添加店铺的返回类型
问题:为什么不直接用实体类Shop呢?
原因:在操作Shop的时候,必然会有一个状态。添加店铺,添加成功,还是添加失败? 如果添加失败,失败是一个什么状态,这些都是要记录的,并且要返回controller层去处理。1.1 店铺操作枚举类ShopStateEnum.java
package com.csj2018.o2o.enums;
public enum ShopStateEnum {
CHECK(0,"审核中"),
OFFLINE(-1,"非法店铺"),
SUCCESS(1,"操作成功"),
PASS(2,"通过认证"),
INNER_ERROR(-1001,"内部系统错误"),
NULL_SHOPID(-1002,"ShopId为空");
private int state;
private String stateInfo;
private ShopStateEnum(int state,String stateInfo) {
this.state = state;
this.stateInfo = stateInfo;
}
public static ShopStateEnum stateOf(int state) {
for(ShopStateEnum stateEnum:values()) { //values()包含了枚举对象所有的值
if(stateEnum.getState() == state) {
return stateEnum;
}
}
return null;
}
public int getState() {
return state;
}
public String getStateInfo() {
return stateInfo;
}
}
1.2 ShopExecution.java
package com.csj2018.o2o.dto;
import java.util.List;
import com.csj2018.o2o.entity.Shop;
import com.csj2018.o2o.enums.ShopStateEnum;
public class ShopExecution {
//结果状态
private int state;
//状态标识
private String stateInfo;
//店铺数量
private int count;
//操作的shop(增删改查店铺的时候用到)
private Shop shop;
//shop列表(查询店铺列表的时候使用)
private List<Shop> shopList;
public ShopExecution() {}
//店铺操作失败时使用的构造器
public ShopExecution(ShopStateEnum stateEnum){
this.state = stateEnum.getState();
this.stateInfo = stateEnum.getStateInfo();
}
//店铺操作成功时使用的构造器
public ShopExecution(ShopStateEnum stateEnum,Shop shop){
this.state = stateEnum.getState();
this.stateInfo = stateEnum.getStateInfo();
this.shop = shop;
}
//店铺操作成功时使用的构造器
public ShopExecution(ShopStateEnum stateEnum,List<Shop> shopList){
this.state = stateEnum.getState();
this.stateInfo = stateEnum.getStateInfo();
this.shopList = shopList;
}
public int getState() {
return state;
}
public void setState(int state) {
this.state = state;
}
public String getStateInfo() {
return stateInfo;
}
public void setStateInfo(String stateInfo) {
this.stateInfo = stateInfo;
}
public int getCount() {
return count;
}
public void setCount(int count) {
this.count = count;
}
public Shop getShop() {
return shop;
}
public void setShop(Shop shop) {
this.shop = shop;
}
public List<Shop> getShopList() {
return shopList;
}
public void setShopList(List<Shop> shopList) {
this.shopList = shopList;
}
}