树形结构的jsp展现

100000 根文件夹

110000 一级文件夹

110200 二级文件夹

最简单可以用ztree等控件

select * from

(

/*select '权限树' name,'0' id,'-1' parentid from dual */

select t.name name,t.id id,t.parentid parentid ,'1' leave from opm_menufolder t

union all select o.name name,o.id id,o.menufolderid,'2' leave from opm_menuitem o

union all select l.name name,l.id id,l.menuitemid ,'3' leave from opm_menuitemlimit l

)

start with parentid is null connect by prior id=parentid ORDER BY leave

按级别展现可以的，这种一次性查出来，对于有规律的数据结构还好（位数层级识别），可以在后台渲染好，js中渲染好，对于没有规律的不好做标记，

http://zhoujingxian.iteye.com/blog/935660

类似上述网站的jsp不好渲染（没有特殊的控件的话），有没有规律的数据可以后台用迭代递归查询，每次递归的时候打标签----这就是迭代和sql比的好处

如下:

select * from (select * from

(

/*select '权限树' name,'0' id,'-1' parentid from dual */

select t.name name,t.id id,t.parentid parentid ,'1' leave from opm_menufolder t

union all select o.name name,o.id id,o.menufolderid,'2' leave from opm_menuitem o

union all select l.name name,l.id id,l.menuitemid ,'3' leave from opm_menuitemlimit l

)

start with parentid is null connect by prior id=parentid ORDER SIBLINGS BY parentid) where parentid='100000'

迭代中的变量是，自动会每次一个新的在回调的时候就一个个找到之前的变量,这样就可以组合累加了

========================

代码：

Control

@RequestMapping(value="/system/opmRole/editUi")

public String editUi(OpmRoleVo opmRole,HttpServletRequest request,Model modle) {

Map<String,Object> paramq = new HashMap<String,Object>();

paramq.put("pId", "100000");

String str0="";

String str= treeRead(paramq);//这个在页面的时候用ajax请求

System.out.println(str);

return "/system/opmUser/editUi";

}

@SuppressWarnings("rawtypes")

@RequestMapping(value="/system/opmRole/Auths")

@ResponseBody

public String treeRead(Map<String,Object> param){

String str="";

List<Map> map= opmMenufolderService.getfordMenuLimt(param);

Map<String,Object> param1 = new HashMap<String,Object>();

for(Map p: map){

str+=p.get("ID")+"="+p.get("NAME")+"\n";

param1.put("pId", p.get("ID"));

str+=treeRead(param1);

}

return str;//直接组装树形数据

}

Service:

@Override

public List<Map> getfordMenuLimt(Map<String,Object> param) {

// TODO Auto-generated method stub

List<Map> map = new ArrayList<>();

map= (List<Map>) opmMenufolderMapper.getfordMenuLimt(param);

return map;

}

OpmMenufolderMapper .java

public interface OpmMenufolderMapper extends Mapper<OpmMenufolder> {

List<?> getfordMenuLimt(Map<String,Object> param);

}

mapper.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" >

<!--

WARNING - @mbggenerated

-->

</resultMap>

select * from (select * from

(

select t.name name,t.id id,t.parentid parentid ,'1' leave from opm_menufolder t

union all select o.name name,o.id id,o.menufolderid,'2' leave from opm_menuitem o

union all select l.name name,l.id id,l.menuitemid ,'3' leave from opm_menuitemlimit l

)

start with parentid is null connect by prior id=parentid ORDER SIBLINGS BY parentid) where parentid=#{pId}

</select>

</mapper>

树形结构的jsp展现

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