家庭记账本（九）

4.事务层Service层

1 package com.wang.service;
 2 
 3 import java.util.List;
 4 
 5 import com.wang.dao.HomeCostDao;
 6 import com.wang.pojo.HomeCost;
 7 
 8 public class HomeCostService {
 9     
10     HomeCostDao homeCostDao = new HomeCostDao();
11     
12     //新增消费账单
13     public int add(HomeCost homecost) {
14         return homeCostDao.add(homecost);
15     }
16     
17     //删除消费账单
18     public int delete(int id) {
19         return homeCostDao.delete(id);
20     }
21     
22     //修改消费账单
23     public int update(HomeCost homecost) {
24         return homeCostDao.update(homecost);
25     }
26     
27     //关键字查询
28     public List<HomeCost> query(String keyword) {
29         return homeCostDao.query(keyword);
30     }
31     
32     //全部消费记录
33     public List<HomeCost> list() {
34         return homeCostDao.list();
35     }
36     
37     //由id查找某条消费记录
38     public HomeCost getHomeCostById(int id) {
39         return homeCostDao.getHomeCostById(id);
40     }
41     
42 }

HomeCostService.java