ZTree入门权限管理
目录
1 ztree入门
第一步:引入ztree相关资源
<!--引入jqurey-->
<script type="text/javascript" src="js/jquery-1.4.4.min.js"></script>
<!--引入ztree-->
<link rel="stylesheet" type="text/css" href="css/zTreeStyle/zTreeStyle.css">
<script type="text/javascript" src="js/jquery.ztree.core-3.5.min.js"></script>
<script type="text/javascript" src="js/jquery.ztree.excheck-3.5.min.js"></script>
第二步: 创建ztree容器，存放树
<ul id="treeDemo" class="ztree"></ul>
第三步:初始化ztree
<script>
$(function () {
//菜单
var zNodes =[
{ id:11, pId:1, name:"随意勾选 1-1", checked:true},
{ id:111, pId:11, name:"随意勾选 1-1-1",checked:true},
{ id:112, pId:11, name:"随意勾选 1-1-2",checked:true},
{ id:12, pId:1, name:"随意勾选 1-2",checked:true},
{ id:121, pId:12, name:"随意勾选 1-2-1",checked:false},
{ id:122, pId:12, name:"随意勾选 1-2-2",checked:false},
{ id:2, pId:0, name:"随意勾选 2", checked:true},
{ id:21, pId:2, name:"随意勾选 2-1",checked:false},
{ id:22, pId:2, name:"随意勾选 2-2",checked:true},
{ id:221, pId:22, name:"随意勾选 2-2-1", checked:true},
{ id:222, pId:22, name:"随意勾选 2-2-2",checked:false},
{ id:23, pId:2, name:"随意勾选 2-3",checked:false},
{ id:1, pId:0, name:"随意勾选 1",checked:true}
];
//配置
var setting = {
check: {
enable: true,//启用复选框
chkboxType: {"Y": "ps", "N": "ps"}//子被选中父也被选中，父被选中，所有的子都被选中
},
data: {
simpleData: {
enable: true
}
}
};
//第一个参数为zTree的DOM容器，第二个为zTree设置详情可见官网api,第三个为zTree的节点数据,expandAll(true)表示默认展开树
$.fn.zTree.init($("#treeDemo"), setting, zNodes).expandAll(true);
});
</script>
获取选中的节点
var arr = $.fn.zTree.getZTreeObj("treeDemo").getCheckedNodes();//treeDemo是ztree树的ID值
2 权限
2.1 表关系
2.2 通过SQL查询某个用户对应的模块
SELECT
su.`user_name`,
sm.`name`
FROM ss_user su
LEFT JOIN ss_role_user sru ON su.`user_id` = sru.`user_id`
LEFT JOIN ss_role sr ON sru.`role_id` = sr.`role_id`
LEFT JOIN ss_role_module srm ON srm.`role_id` = sr.`role_id`
LEFT JOIN ss_module sm ON srm.`module_id` = sm.`module_id`
WHERE su.`user_id` = 'e0de22fe-2c50-4216-ad75-ed0494d2dc92'
2.3 授权功能
2.3.1 效果展示
1.展示权限列表
2.点击授权跳转到授权页面
2.3.2 思考
前端需要的数据格式如下，使用java如何生成JSON格式的字符串:"[{}{}{}]"
var zNodes =[
{ id:11, pId:1, name:"随意勾选 1-1", open:true},
{ id:111, pId:11, name:"随意勾选 1-1-1"},
{ id:112, pId:11, name:"随意勾选 1-1-2"},
{ id:12, pId:1, name:"随意勾选 1-2", open:true},
{ id:121, pId:12, name:"随意勾选 1-2-1"},
{ id:122, pId:12, name:"随意勾选 1-2-2"},
{ id:2, pId:0, name:"随意勾选 2", checked:true, open:true},
{ id:21, pId:2, name:"随意勾选 2-1"},
{ id:22, pId:2, name:"随意勾选 2-2", open:true},
{ id:221, pId:22, name:"随意勾选 2-2-1", checked:true},
{ id:222, pId:22, name:"随意勾选 2-2-2"},
{ id:23, pId:2, name:"随意勾选 2-3"},
{ id:1, pId:0, name:"随意勾选 1", open:true}
];
后端的java怎么才能生成该格式的JSON数据
ArrayList<Map<String,String>> list = new ArrayList<>
Map<String,String> row1 = new HashMap<String,String>;
row1.put("id",11);
row1.put("pId",1);
row1.put("name","xx");
row1.put("checked","true");
Map<String,String> row2 = new HashMap<String,String>;
row2.put("id",11);
row2.put("pId",1);
row2.put("name","xx");
row2.put("checked","true");
list.add(row1);list.add(row2)
把该list转成JSON即可
2.3.3 展示权限Dao
List<Map> findAuthorDataByRoleId(String roleId);
<select id="findAuthorDataByRoleId" parameterType="string" resultType="java.util.Map">
select
module_id as id,
parent_id as pId,
name as name,
case
when module_id in (select module_id from ss_role_module where role_id = #{roleId})
then 'true'
else 'false'
end
as checked
from
ss_module
</select>
SQL
SELECT
module_id 'id',
parent_id 'pId',
NAME 'name',
CASE
WHEN module_id IN (SELECT module_id FROM ss_role_module WHERE role_id='4028a1c34ec2e5c8014ec2ebf8430001')
THEN 'true'
ELSE 'false'
END AS 'checked'
FROM ss_module
2.3.4 展示权限Service
@Override
public List<Role> findAllRoleByUserId(String userId) {
SqlSession sqlSession = null;
try{
//1.获取SqlSession
sqlSession = MapperFactory.getSqlSession();
//2.获取Dao
RoleDao roleDao = MapperFactory.getMapper(sqlSession,RoleDao.class);
//3.调用Dao层操作
return roleDao.findAllRoleByUserId(userId);
}catch (Exception e){
throw new RuntimeException(e);
//记录日志
}finally {
try {
TransactionUtil.close(sqlSession);
}catch (Exception e){
e.printStackTrace();
}
}
}
2.3.5 展示权限RoleServlet
private void author(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
//获取要授权的角色id
String roleId = request.getParameter("id");
//使用id查询对应的数据（角色id对应的模块信息）
Role role = roleService.findById(roleId);
request.setAttribute("role",role);
//根据当前的角色id获取所有的模块数据，并加载关系数据
List<Map> map = moduleService.findAuthorDataByRoleId(roleId);
//map转成json数据
ObjectMapper om = new ObjectMapper();
String json = om.writeValueAsString(map);
request.setAttribute("roleModuleJson",json);
// TODO 数据未查询
//跳转到树页面中
request.getRequestDispatcher("/WEB-INF/pages/system/role/author.jsp").forward(request,response);
}
2.3.6 展示权限前端
$(document).ready(function(){
// 定义页面对应的树形组件
var zTreeObj;
var setting = {check: {enable: true},data: {simpleData: {enable: true}}};
var zNodes =${roleModuleJson}
zTreeObj = $.fn.zTree.init($("#treeDemo"), setting, zNodes)
var zTree = $.fn.zTree.getZTreeObj("treeDemo")
zTree.setting.check.chkboxType = { "Y" : "ps", "N" : "ps" }
zTreeObj.expandAll(true);//true：展开所有
});
2.4 修改权限
表单数据如下
第一步：给保存按钮添加单击事件，单击时获取所有的被选中的复选框的值，然后拼接成字符串赋值给#moduleIds
第二步：服务器Servlet直接获取表单数据，调用service
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