页面：
<script type="text/javascript" src="plugins/angularjs/angular.min.js"></script> <script type="text/javascript" src="js/service/userService.js"></script> <script type="text/javascript" src="js/controller/userController.js"></script> <div class="item bo" ng-repeat="entity in list"> <!-- 去重 --> <h3><a href="" ng-hide="list[$index].catOneName == list[$index+1].catOneName">{{entity.catOneName}}</a></h3> <div class="item-list clearfix"> <div class="subitem"> <dl class="fore"> <!-- 去重 --> <dt><a href="" ng-hide="list[$index].catTwoName == list[$index+1].catTwoName">{{entity.catTwoName}}</a></dt> <dd><em><a href="">{{entity.catThreeName}}</a></em></dd> </dl> </div> </div> </div>
实体类：
public class TbItemCat implements Serializable{ private Long id; private Long parentId; private String name; private Long typeId;
sql做自连接查询:
mapper.xml
<select id="selectAll" resultType="java.util.HashMap"> SELECT cat1.`id` catOneId,cat1.`name` catOneName,cat1.`parent_id` parentIdOne,cat2.id catTwoId,cat2.`name` catTwoName,cat2.`parent_id` parentIdTwo,cat3.id catThreeId,cat3.`name` catThreeName,cat3.`parent_id` parentIdThree FROM tb_item_cat cat1,tb_item_cat cat2,tb_item_cat cat3 WHERE cat1.`id`=cat2.`parent_id` AND cat2.id=cat3.`parent_id` </select>
mapper接口：
List<Map<String,TbItemCat>> selectAll();
impl实现类:
@Override public List<Map<String,TbItemCat>> selectAll() { List<Map<String,TbItemCat>> selectAll = itemCatMapper.selectAll(); return selectAll; }
controller控制层:
@RequestMapping("/findAll") public List<Map<String,TbItemCat>> findAll(){ List<Map<String,TbItemCat>> selectAll = itemCatService.selectAll(); return selectAll; }
contentController.js
/
app.controller("contentController",function($scope,contentService){ $scope.list = []; $scope.findAll=function(){ contentService.findAll().success(function(response){ //将相应的数据放到list里面 $scope.list = response; }); } });
contentService.js
app.service("contentService",function($http){ this.findAll = function(){ return $http.get("content/findAll.do"); } });
控制层获取的数据和数据库的数据一样，一条一条的用list集合接收，但是发现页面经过去重之后，数据不对，换了另一种思路
创建一级分类的实体类
public class TbItemCatOneExample implements Serializable { private Long id; private Long parentId; private String name; private Long typeId; private List<TbItemCat> tbItemCats2;
创建二级分类的实体类
public class TbItemCatTwoExample implements Serializable{ private Long id; private Long parentId; private String name; private Long typeId; private List<TbItemCat> tbItemCats3;
创建三级分类实体类
public class TbItemCat implements Serializable{ private Long id; private Long parentId; private String name; private Long typeId;
控制层controller
@RequestMapping("/findAll") public List<TbItemCatOneExample> findAll(){ List<TbItemCatOneExample> selectAll = itemCatService.selectAll(); System.out.println(selectAll); return selectAll; }
service接口
/** * 首页三级分类 * @return */ public List<TbItemCatOneExample> selectAll();
serviceImpl实现类
@Override public List<TbItemCatOneExample> selectAll() { //从库中获取的数据 List<TbItemCatOneExample> selectAll = itemCatMapper.selectAll(); return selectAll; }
mapper接口
List<TbItemCatOneExample> selectAll();
mapper.xml
<resultMap id="BaseResultMap1" type="com.pinyougou.pojo.TbItemCatOneExample" > <id column="catOneId" property="id" jdbcType="BIGINT" /> <result column="parentIdOne" property="parentId" jdbcType="BIGINT" /> <result column="catOneName" property="name" jdbcType="VARCHAR" /> <collection property="tbItemCats2" ofType="com.pinyougou.pojo.TbItemCatTwoExample" javaType="java.util.ArrayList"> <id column="catTwoId" property="id" jdbcType="BIGINT" /> <result column="parentIdTwo" property="parentId" jdbcType="BIGINT" /> <result column="catTwoName" property="name" jdbcType="VARCHAR" /> <collection property="tbItemCats3" ofType="com.pinyougou.pojo.TbItemCat" javaType="java.util.ArrayList"> <id column="catThreeId" property="id" jdbcType="BIGINT" /> <result column="parentIdThree" property="parentId" jdbcType="BIGINT" /> <result column="catThreeName" property="name" jdbcType="VARCHAR" /> </collection> </collection> </resultMap> <select id="selectAll" resultMap="BaseResultMap1"> SELECT cat1.`id` catOneId,cat1.`name` catOneName,cat1.`parent_id` parentIdOne,cat2.id catTwoId,cat2.`name` catTwoName,cat2.`parent_id` parentIdTwo, cat3.id catThreeId,cat3.`name` catThreeName,cat3.`parent_id` parentIdThree FROM tb_item_cat cat1,tb_item_cat cat2,tb_item_cat cat3 WHERE cat1.`id`=cat2.`parent_id` AND cat2.id=cat3.`parent_id` </select>
在控制台获取到想要的数据了
但是页面展示发现angularjs不能再class中传递，需要修改样式，去除class，有点小尴尬
页面
<div ng-repeat="entity in list"> <h3><a href="" >{{entity.name}}</a></h3> <div ng-repeat="cat2 in entity.tbItemCats2" > <div > <dl > <dt><a href="" >{{cat2.name}}</a></dt> <dd ng-repeat="cat3 in cat2.tbItemCats3"><em><a href="">{{cat3.name}}</a></em></dd> </dl> </div> </div> </div>
