spring mvc easyui tree 异步加载树

使用spring mvc 注解 异步加载一棵树

jsp：

<ul id="orgInfoTree"></ul>   

    $(function(){
        loadOrgTree();
    }); 

    function loadOrgTree(){
        $('#orgInfoTree').tree({
            checkbox: true,
            lines:true,
            url: '<%=request.getContextPath()%>/FNCG_PD_QRY/loadOrgTree', 这是第一次加载树的url 加载根节点
            onBeforeExpand:function(node){
                $("#orgInfoTree").tree('options').url='<%=request.getContextPath()%>/FNCG_PD_QRY/loadOrgChildrenTree?FID='+node.id; 这是点击根节点的时候发送请求去加载子节点
            },
            onClick:function(node){
                $("#orgInfoTree").tree('options').url='<%=request.getContextPath()%>/FNCG_PD_QRY/loadOrgChildrenTree?FID='+node.id;
            }
        });        
    }

java代码部分

　　controller部分：　

    @RequestMapping("/loadOrgTree")
    @ResponseBody
    public String loadOrgTree(){
        List<OrgTree> OTList = fncg_PD_QRY_Service.loadOrgTree();
        StringBuffer sb = new StringBuffer();
        sb.append("[");
        for (OrgTree orgTree : OTList) {
            sb.append("{\"id\":" + orgTree.getORGN_CODE() + " ,\"text\":" + "\""
                    + orgTree.getORGN_NAME() + "\"" + " ,\"state\":"
                    + " \"closed\" " + " ,\"attributes\":" + "\""
                    + orgTree.getORGN_LVL() + "\"" + "},");
        }
        sb.deleteCharAt(sb.length() - 1);
        sb.append("]");
        return sb.toString();
    }
    
    @RequestMapping("/loadOrgChildrenTree")
    @ResponseBody
    public String loadOrgChildrenTree(String FID){
        List<OrgTree> OTList = fncg_PD_QRY_Service.loadOrgChildrenTree(FID);
        StringBuffer sb = new StringBuffer();
        sb.append("[");
        for (OrgTree orgTree : OTList) {
            sb.append("{\"id\":" + orgTree.getORGN_CODE() + " ,\"text\":" + "\""
                    + orgTree.getORGN_NAME() + "\"" + " ,\"state\":"
                    + " \"closed\" " + " ,\"attributes\":" + "\""
                    + orgTree.getORGN_LVL() + "\"" + "},");
        }
        sb.deleteCharAt(sb.length() - 1);
        sb.append("]");        
        return sb.toString();                
    }
    

　　service部分：

    public List<OrgTree> loadOrgTree(){
        return fncg_PD_QRY_Dao.loadOrgTree();
    }
    
    public List<OrgTree> loadOrgChildrenTree(String FID){
        return fncg_PD_QRY_Dao.loadOrgChildrenTree(FID);
    }

　　

　　dao部分：

    public List<OrgTree> loadOrgTree();
    
    public List<OrgTree> loadOrgChildrenTree(@Param("FID") String FID);

　　

　　xml，接口对应的sql部分

    <select id="loadOrgTree" resultMap="com.cvicin.products.productManage.fngg.mapper.poRes.OrgTree">
          SELECT B.ID AS ID,B.ORGN_CODE AS ORGN_CODE,B.F_ORGN_ID AS F_ORGN_ID,B.ORGN_NAME AS ORGN_NAME,B.ORGN_LVL AS ORGN_LVL FROM ORGN_BASIC B WHERE B.ORGN_LVL = (SELECT min(A.ORGN_LVL) FROM ORGN_BASIC A) 
    </select>        
        
    <select id="loadOrgChildrenTree" parameterType="java.lang.String" resultMap="com.cvicin.products.productManage.fngg.mapper.poRes.OrgTree">
          SELECT B.ID AS ID,B.ORGN_CODE AS ORGN_CODE,B.F_ORGN_ID AS F_ORGN_ID,B.ORGN_NAME AS ORGN_NAME,B.ORGN_LVL AS ORGN_LVL FROM ORGN_BASIC B WHERE B.F_ORGN_ID = #{FID,jdbcType=VARCHAR}  
    </select>    

javaBean和对应的xml：

public class OrgTree extends BasePO{
    
    private int ID;
    private String ORGN_CODE;
    private String F_ORGN_ID;
    private String ORGN_NAME;
    private String ORGN_LVL;
    
    public int getID() {
        return ID;
    }
    public void setID(int iD) {
        ID = iD;
    }
    public String getORGN_CODE() {
        return ORGN_CODE;
    }
    public void setORGN_CODE(String oRGN_CODE) {
        ORGN_CODE = oRGN_CODE;
    }
    public String getF_ORGN_ID() {
        return F_ORGN_ID;
    }
    public void setF_ORGN_ID(String f_ORGN_ID) {
        F_ORGN_ID = f_ORGN_ID;
    }
    public String getORGN_NAME() {
        return ORGN_NAME;
    }
    public void setORGN_NAME(String oRGN_NAME) {
        ORGN_NAME = oRGN_NAME;
    }
    public String getORGN_LVL() {
        return ORGN_LVL;
    }
    public void setORGN_LVL(String oRGN_LVL) {
        ORGN_LVL = oRGN_LVL;
    }
    
}

    <resultMap id="OrgTree" type="com.cvicin.products.productManage.OrgTree">
        <result property="ID"                   column="ID" />
        <result property="ORGN_CODE"           column="ORGN_CODE" />
        <result property="F_ORGN_ID"           column="F_ORGN_ID" />
        <result property="ORGN_NAME"           column="ORGN_NAME" />
        <result property="ORGN_LVL"            column="ORGN_LVL" />
    </resultMap>    

一颗无刷新的，异步加载的tree