权限管理--权限资源管理

一:界面展示

1：主界面

主界面时用的easyUi的treeGrid进行展示的

2：新增界面

3：修改界面

二：难点解析

1：treeGrid 的数据展示

treegrid 的疏解格式有两种格式

（1）基本的数据类型

[{  
    "id":1,  
    "name":"C",  
    "size":"",  
    "date":"02/19/2010",  
    "children":[{  
        "id":2,  
        "name":"Program Files",  
        "size":"120 MB",  
        "date":"03/20/2010",  
        "children":[{  
            "id":21,  
            "name":"Java",  
            "size":"",  
            "date":"01/13/2010",  
            "state":"closed",  
            "children":[{  
                "id":211,  
                "name":"java.exe",  
                "size":"142 KB",  
                "date":"01/13/2010"  
            },{  
                "id":212,  
                "name":"jawt.dll",  
                "size":"5 KB",  
                "date":"01/13/2010"  
            }]  
        },{  
            "id":22,  
            "name":"MySQL",  
            "size":"",  
            "date":"01/13/2010",  
            "state":"closed",  
            "children":[{  
                "id":221,  
                "name":"my.ini",  
                "size":"10 KB",  
                "date":"02/26/2009"  
            },{  
                "id":222,  
                "name":"my-huge.ini",  
                "size":"5 KB",  
                "date":"02/26/2009"  
            },{  
                "id":223,  
                "name":"my-large.ini",  
                "size":"5 KB",  
                "date":"02/26/2009"  
            }]  
        }]  
    },{  
        "id":3,  
        "name":"eclipse",  
        "size":"",  
        "date":"01/20/2010",  
        "children":[{  
            "id":31,  
            "name":"eclipse.exe",  
            "size":"56 KB",  
            "date":"05/19/2009"  
        },{  
            "id":32,  
            "name":"eclipse.ini",  
            "size":"1 KB",  
            "date":"04/20/2010"  
        },{  
            "id":33,  
            "name":"notice.html",  
            "size":"7 KB",  
            "date":"03/17/2005"  
        }]  
    }]  
}]  

（2）简单的数据类型

{"total":7,"rows":[  
    {"id":1,"name":"All Tasks","begin":"3/4/2010","end":"3/20/2010","progress":60,"iconCls":"icon-ok"},  
    {"id":2,"name":"Designing","begin":"3/4/2010","end":"3/10/2010","progress":100,"_parentId":1,"state":"closed"},  
    {"id":21,"name":"Database","persons":2,"begin":"3/4/2010","end":"3/6/2010","progress":100,"_parentId":2},  
    {"id":22,"name":"UML","persons":1,"begin":"3/7/2010","end":"3/8/2010","progress":100,"_parentId":2},  
    {"id":23,"name":"Export Document","persons":1,"begin":"3/9/2010","end":"3/10/2010","progress":100,"_parentId":2},  
    {"id":3,"name":"Coding","persons":2,"begin":"3/11/2010","end":"3/18/2010","progress":80},  
    {"id":4,"name":"Testing","persons":1,"begin":"3/19/2010","end":"3/20/2010","progress":20}  
],"footer":[  
    {"name":"Total Persons:","persons":7,"iconCls":"icon-sum"}  
]}  

基本的数据类型的话和之前加载tree组件的数据类型是一样的，在此就不在多说。

简单的数据类型的有一个小的坑么就是 上级父节点的关键字必须为“_parentId”,把握住这一点，结合下面的一篇文章就能够轻轻松松解决。

点击打开链接

2：删除时根据父节点时删除其下所有关联节点 ---connect by prior 递归算法 

当用户删除权限时，需要把其下的所有权限都删掉。倘若父级权限不存在，再多的下级权限也变的无意义。

sql如下

delete from sys_res_info
 where res_id in (SELECT res_id
                    FROM sys_res_info
                  CONNECT BY PRIOR res_id = res_parent_id
                   start WITH res_id = #{resId})