实战SSM_O2O商铺_13【商铺注册】View层之初始化页面数据
文章目录
- 请求过程分析
- DAO层的实现
- AreaDao接口,Mapper映射文件及单元测试
- ShopCategoryDao接口
- ShopCategoryDao.xml Mapper映射文件
- 单元测试
- Service层的实现
- AreaService接口,AreaServiceImpl接口实现类及单元测试
- ShopCategoryService接口
- ShopCategoryServiceImpl 接口实现类
- 单元测试
- Controller层
- 部署调测
- Github地址
请求过程分析
页面画完之后，我们的下拉框是没有数据的
<!-- 商铺分类 下拉列表 -->
<li>
<div class="item-content">
<div class="item-inner">
<div class="item-title label">商铺分类</div>
<div class="item-input">
<!-- 增加id,便于js中操作，需要从后台读取数据 -->
<select id="shop-category">
</select>
</div>
</div>
</div>
</li>
<!-- 所属区域 下拉列表 - -->
<li>
<div class="item-content">
<div class="item-inner">
<div class="item-title label">所属区域</div>
<div class="item-input">
<select id="shop-area">
</select>
</div>
</div>
</div>
</li>
在初始换页面加载js的时候调用
// 调用函数，加载数据
getShopInitInfo();
函数定义如下：
/**
* 从后台加载获取下拉菜单的值
*/
function getShopInitInfo() {
$.getJSON(initUrl, function(data) {
if (data.success) {
var tempShopCategoryHtml = '';
var tempShopAreaHtml = '';
data.shopCategoryList.map(function(item, index) {
tempShopCategoryHtml += ' item.shopCategoryId + '">' + item.shopCategoryName
+ '';
});
data.areaList.map(function(item, index) {
tempShopAreaHtml += ' item.areaId
+ '">' + item.areaName + '';
});
// 获取html中对应标签的id 赋值
$('#shop-category').html(tempShopCategoryHtml);
$('#shop-area').html(tempShopAreaHtml)
}else{
$.toast(data.errMsg);
}
});
};
请求 initUrl ， 我们设置的值为/o2o/shopadmin/getshopinitinfo ，根据web.xml中配置拦截所有请求可知在经过DispatcherServlet分发到Controller层，接收到请求后继续处理。
DAO层的实现
需要获取商铺分类列表和区域列表，DAO层我们还没做完，来完善下
AreaDao接口,Mapper映射文件及单元测试
我们在实战SSM_O2O商铺_05集成SSM后验证DAO层、Service层、Controller层的配置中已经开发了queryArea接口以及配置了mapper映射文件，我们这里直接复用这个接口即可。
剩下的就是ShopCategory的了。
ShopCategoryDao接口
/o2o/src/main/java/com/artisan/o2o/dao/ShopCategoryDao.java
package com.artisan.o2o.dao;
import java.util.List;
import org.apache.ibatis.annotations.Param;
import com.artisan.o2o.entity.ShopCategory;
public interface ShopCategoryDao {
/**
*
*
* @Title: queryShopCategoryList
*
* @Description: 按照需求
*
* 1.首页展示一级目录（即parent_id 为 null的商铺类别）
*
* 2.点进去某个一级目录加载对应目录下的子目录
*
* 所以这里需要加个入参ShopCategory，并通过MyBatis提供的注解@Param与Mapper映射文件中的SQL关联起来
* ，在SQL中进行判断
*
* @return
*
* @return: List
*/
List<ShopCategory> queryShopCategoryList(@Param("shopCategoryCondition") ShopCategory shopCategory);
}
ShopCategoryDao.xml Mapper映射文件
/o2o/src/main/resources/mapper/ShopCategoryDao.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.artisan.o2o.dao.ShopCategoryDao">
<select id="queryShopCategoryList" resultType="com.artisan.o2o.entity.ShopCategory">
SELECT
shop_category_id ,
shop_category_name,
shop_category_desc,
shop_category_img,
priority,
create_time,
last_edit_time,
parent_id
FROM
tb_shop_category
<where>
<!-- 控制层getshopinitinfo的方法 shopCategoryService.getShopCategoryList(new ShopCategory());
只能选择二级商铺类别，不能挂载一级商铺类别大类目录下
-->
<if test="shopCategoryCondition != null">
and parent_id is not null
</if>
<!-- 如果传递了父类的id,则查询对应父类下的目录 -->
<if test="shopCategoryCondition.parent != null">
and parent_id = #{shopCategoryCondition.parent.shopCategoryId}
</if>
</where>
ORDER BY priority
DESC
</select>
</mapper>
单元测试
tb_shop_category中的数据
为了方便测试，我们添加几条测试数据
-- ----------------------------
-- Records of tb_shop_category
-- ----------------------------
INSERT INTO `tb_shop_category` VALUES ('1', '咖啡奶茶', '咖啡奶茶大类', '/xxxx/xxxx', '0', '2018-05-18 02:13:56', '2018-05-18 02:13:58', null);
INSERT INTO `tb_shop_category` VALUES ('2', '咖啡', '咖啡小类', '/yyyy/yyyy', '2', '2018-05-18 03:38:17', '2018-05-18 03:38:20', '1');
INSERT INTO `tb_shop_category` VALUES ('3', '奶茶', '奶茶小类', '/aaa/bbb', '0', '2018-05-29 14:36:55', '2018-05-29 14:36:58', '1');
单元测试类
package com.artisan.o2o.dao;
import java.util.List;
import org.junit.Assert;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import com.artisan.o2o.BaseTest;
import com.artisan.o2o.entity.ShopCategory;
public class ShopCategoryDaoTest extends BaseTest {
@Autowired
ShopCategoryDao shopCategoryDao;
@Test
public void testQueryShopCategoryList() {
// shopCategoryCondition 不为null的情况，查询parent_id is not null 的数据
ShopCategory shopCategory = new ShopCategory();
List<ShopCategory> categoryList = shopCategoryDao.queryShopCategoryList(shopCategory);
Assert.assertEquals(2, categoryList.size());
for (ShopCategory shopCategory2 : categoryList) {
System.out.println(shopCategory2);
}
// shopCategoryCondition.parent 不为null的情况
// 查询parent=1的店铺目录
ShopCategory child = new ShopCategory();
ShopCategory parent = new ShopCategory();
parent.setShopCategoryId(1L);
child.setParent(parent);
categoryList = shopCategoryDao.queryShopCategoryList(child);
Assert.assertEquals(2, categoryList.size());
for (ShopCategory shopCategory2 : categoryList) {
System.out.println(shopCategory2);
}
}
}
检查日志信息是否符合预期
五月 29, 2018 2:44:57 下午 com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource getPoolManager
信息: Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 2, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 10000, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dataSourceName -> 1br1ebw9v1c27wf2172af4p|74f0ea28, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1br1ebw9v1c27wf2172af4p|74f0ea28, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://localhost:3306/o2o?useUnicode=true&characterEncoding=utf8, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 0, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 30, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 10, numHelperThreads -> 3, numThreadsAwaitingCheckoutDefaultUser -> 0, preferredTestQuery -> null, properties -> {user=******, password=******}, propertyCycle -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false ]
JDBC Connection [com.mchange.v2.c3p0.impl.NewProxyConnection@38234a38] will not be managed by Spring
==> Preparing: SELECT shop_category_id , shop_category_name, shop_category_desc, shop_category_img, priority, create_time, last_edit_time, parent_id FROM tb_shop_category WHERE parent_id is not null ORDER BY priority DESC
==> Parameters:
<== Columns: shop_category_id, shop_category_name, shop_category_desc, shop_category_img, priority, create_time, last_edit_time, parent_id
<== Row: 2, 咖啡, 咖啡小类, /yyyy/yyyy, 2, 2018-05-18 03:38:17.0, 2018-05-18 03:38:20.0, 1
<== Row: 3, 奶茶, 奶茶小类, /aaa/bbb, 0, 2018-05-29 14:36:55.0, 2018-05-29 14:36:58.0, 1
<== Total: 2
Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@36cda2c2]
ShopCategory [shopCategoryId=2, shopCategoryName=咖啡, shopCategoryDesc=咖啡小类, shopCategoryImg=/yyyy/yyyy, priority=2, createTime=Fri May 18 03:38:17 BOT 2018, lastEditTime=Fri May 18 03:38:20 BOT 2018, parent=null]
ShopCategory [shopCategoryId=3, shopCategoryName=奶茶, shopCategoryDesc=奶茶小类, shopCategoryImg=/aaa/bbb, priority=0, createTime=Tue May 29 14:36:55 BOT 2018, lastEditTime=Tue May 29 14:36:58 BOT 2018, parent=null]
Creating a new SqlSession
SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@29ca3d04] was not registered for synchronization because synchronization is not active
JDBC Connection [com.mchange.v2.c3p0.impl.NewProxyConnection@52c3cb31] will not be managed by Spring
==> Preparing: SELECT shop_category_id , shop_category_name, shop_category_desc, shop_category_img, priority, create_time, last_edit_time, parent_id FROM tb_shop_category WHERE parent_id is not null and parent_id = ? ORDER BY priority DESC
==> Parameters: 1(Long)
<== Columns: shop_category_id, shop_category_name, shop_category_desc, shop_category_img, priority, create_time, last_edit_time, parent_id
<== Row: 2, 咖啡, 咖啡小类, /yyyy/yyyy, 2, 2018-05-18 03:38:17.0, 2018-05-18 03:38:20.0, 1
<== Row: 3, 奶茶, 奶茶小类, /aaa/bbb, 0, 2018-05-29 14:36:55.0, 2018-05-29 14:36:58.0, 1
<== Total: 2
Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@29ca3d04]
ShopCategory [shopCategoryId=2, shopCategoryName=咖啡, shopCategoryDesc=咖啡小类, shopCategoryImg=/yyyy/yyyy, priority=2, createTime=Fri May 18 03:38:17 BOT 2018, lastEditTime=Fri May 18 03:38:20 BOT 2018, parent=null]
ShopCategory [shopCategoryId=3, shopCategoryName=奶茶, shopCategoryDesc=奶茶小类, shopCategoryImg=/aaa/bbb, priority=0, createTime=Tue May 29 14:36:55 BOT 2018, lastEditTime=Tue May 29 14:36:58 BOT 2018, parent=null]
五月 29, 2018 2:44:58 下午 org.springframework.context.support.GenericApplicationContext doClose
信息: Closing org.springframework.context.support.GenericApplicationContext@ae45eb6: startup date [Tue May 29 14:44:53 BOT 2018]; root of context hierarchy
单元测试通过
Service层的实现
AreaService接口,AreaServiceImpl接口实现类及单元测试
我们在实战SSM_O2O商铺_05集成SSM后验证DAO层、Service层、Controller层的配置中已经开发了AreaService接口,AreaServiceImpl接口实现类及单元测试，我们这里直接复用即可。
ShopCategoryService接口
/o2o/src/main/java/com/artisan/o2o/service/ShopCategoryService.java
package com.artisan.o2o.service;
import java.util.List;
import com.artisan.o2o.entity.ShopCategory;
public interface ShopCategoryService {
List<ShopCategory> getShopCategoryList(ShopCategory shopCategory);
}
ShopCategoryServiceImpl 接口实现类
/o2o/src/main/java/com/artisan/o2o/service/impl/ShopCategoryServiceImpl.java
package com.artisan.o2o.service.impl;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.artisan.o2o.dao.ShopCategoryDao;
import com.artisan.o2o.entity.ShopCategory;
import com.artisan.o2o.service.ShopCategoryService;
@Service
public class ShopCategoryServiceImpl implements ShopCategoryService {
@Autowired
private ShopCategoryDao shopCategoryDao;
@Override
public List<ShopCategory> getShopCategoryList(ShopCategory shopCategory) {
return shopCategoryDao.queryShopCategoryList(shopCategory);
}
}
单元测试
package com.artisan.o2o.service;
import java.util.List;
import org.junit.Assert;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import com.artisan.o2o.BaseTest;
import com.artisan.o2o.entity.ShopCategory;
public class ShopServiceCategoryTest extends BaseTest {
@Autowired
ShopCategoryService shopCategoryService;
@Test
public void testQueryShopCategory() {
ShopCategory shopCategory = new ShopCategory();
List<ShopCategory> shopCategories = shopCategoryService.getShopCategoryList(shopCategory);
Assert.assertEquals(2, shopCategories.size());
for (ShopCategory shopCategory2 : shopCategories) {
System.out.println(shopCategory2);
}
}
}
验证符合预期，单元测试OK。
Controller层
前端js中的请求路径
// 获取基本信息的URL
var initUrl = '/o2o/shopadmin/getshopinitinfo';
/o2o/src/main/java/com/artisan/o2o/web/shopadmin/ShopController.java#getshopinitinfo 中使用@RequestMapping匹配前端请求的URL，返回前端的数据为@ResponseBody将返回Map
/**
*
*
* @Title: getshopinitinfo
*
* @Description: 初始化区域信息 和 ShopCategory信息,返回给前台表单页面
*
* @return: Map
*/
@RequestMapping(value = "/getshopinitinfo", method = RequestMethod.GET)
@ResponseBody
public Map<String, Object> getshopinitinfo() {
Map<String, Object> modelMap = new HashMap<String, Object>();
List<ShopCategory> shopCategoryList = null;
List<Area> areaList = null;
try {
shopCategoryList = shopCategoryService.getShopCategoryList(new ShopCategory());
areaList = areaservice.getAreaList();
// 返回success shopCategoryList areaList,前端通过 data.success来判断从而展示shopCategoryList和areaList的数据
modelMap.put("success", true);
modelMap.put("shopCategoryList", shopCategoryList);
modelMap.put("areaList", areaList);
} catch (Exception e) {
modelMap.put("success", false);
modelMap.put("errMsg", e.getMessage());
}
return modelMap;
}
当然了别忘了注入
@Autowired
private ShopCategoryService shopCategoryService;
@Autowired
private AreaService areaservice;
部署调测
启动tomcat ，调测阶段可以通过debug的方式，更加详细了解请求过程。
可以看到已经加载了后端的数据，并且符合需求。 店铺分类加载二级目录，区域加载全部区域.
Github地址
代码地址： https://github.com/yangshangwei/o2o