------------------------------------------------------------------------HTML---------------------------------------------------------------------

                                treedata="${dataLst}"comboTreeId="name"style="width:153">

treedata="${dataLst}":对应获得后台的数据

displayValue：对应数据的NAME

value:对应数据ID

comboTreeId="name"代表的是生成树状后INPUT的NAME属性的值 ,ID的值 以便提交后台获取

树状的原理是根据id name  parent_id来分段的

-------------------------------------------------------------后台-------------------------------------------------------------------------

首先新建bean树类TreeBean。java

packagecom.company.util.tree;

importjava.util.Set;

/**

*

*类名称：TreeBean

*类描述：树形类（用于定义树形的基本结构，以供其它类进行转换）

*创建人：vigo

*/

publicclassTreeBean{

    privateStringid;

    privateStringname;

    privateStringparentid;

    privateStringurl;

    privateStringparam1;//备用字段

    publicStringgetParam1(){

        returnparam1;

    }

    publicvoidsetParam1(Stringparam1){

        this.param1=param1;

    }

    publicStringgetId(){

        returnid;

    }

    publicvoidsetId(Stringid){

        this.id=id;

    }

    publicStringgetName(){

        returnname;

    }

    publicvoidsetName(Stringname){

        this.name=name;

    }

    publicStringgetParentid(){

        returnparentid;

    }

    publicvoidsetParentid(Stringparentid){

        this.parentid=parentid;

    }

    publicStringgetUrl(){

        returnurl;

    }

    publicvoidsetUrl(Stringurl){

        this.url=url;

    }

}

------------------------------------------------------action中查询SQL表数据--------------

ListdataLst=useAmAppFormulaService.findBdExpertItem(false);

            TreeBeandef=newTreeBean();

            def.setId("-1");

            def.setName("请选择商品品目");

            def.setParentid("");

            dataLst.add(def);

            request.setAttribute("dataLst",dataLst);

---------------------------------service实现类------------------------此处，我的项目用的是S2SH框架，在后台取得数据时对应自己的取数据的写法

/**

    *查询商品品目树

    *@throws如果Dao层操作失败会抛出异常

    *@return查询的所有结果集

    */

    publicListfindBdExpertItem(booleansetXzqhTreeHead)throwsException{

        StringBuilderhql=newStringBuilder("selectt.id,t.name,t.parent_idfromBdExpertItemastwhere1=1");

        List