struts2+json+jquery

package com.gtercn.ecard.action.organization;import java.util.List;import net.sf.json.JSONObject;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import com.gtercn.ecard.bean.vo.OrganizationVO;import com.gtercn.ecard.common.BaseAction;import com.gtercn.ecard.service.organization.OrgService;import com.gtercn.ecard.util.JsonMetaData;@Controllerpublic class ShowOrgAction extends BaseAction {private static final long serialVersionUID = 1L;

         //result为异步返回页面的结果private JSONObject result;@Autowiredprivate OrgService orgService;

         //Json工具类（自定义）@AutowiredJsonMetaData jsonUtil;@Overridepublic String execute() throws Exception {jsonUtil = new JsonMetaData();List<OrganizationVO> fistNodes = orgService.getFirstNode();this.setResult(JsonMetaData.getJsonResult(fistNodes));return SUCCESS;}         //struts默认把具有get方式的数据域传回回调函数中public JSONObject getResult() {return result;}}

package com.gtercn.ecard.util;

import java.util.List;

import net.sf.json.JSONArray;import net.sf.json.JSONObject;import net.sf.json.JsonConfig;import net.sf.json.util.PropertyFilter;

import org.springframework.stereotype.Controller;

import com.gtercn.ecard.bean.organization.Organization;import com.gtercn.ecard.bean.vo.OrganizationVO;

/** * json 工具类 *  * @author gtercn_hpf *  */@Controllerpublic class JsonMetaData { /**  * 得到一个json数组  *   * @param fistNodes  * @return  */ public static JSONObject getJsonResult(List<OrganizationVO> fistNodes) {

  JsonConfig jsonConfig = new JsonConfig();

  JSONObject json = new JSONObject();

  json.put("data", JSONArray.fromObject(fistNodes, jsonConfig));  return json;

 }

 public static JSONObject getSubNodeJson(List<Organization> nodes) {  JsonConfig jsonConfig = new JsonConfig();

  JSONObject json = new JSONObject();

   //字段过滤器

  jsonConfig.setJsonPropertyFilter(new PropertyFilter() {   @Override   public boolean apply(Object source, String name, Object value) {    System.out.println(name);    if (source != null) {     if (name.equals("orgTitles") || name.equals("persons")) {      return true;     }    }    return false;   }  });

  json.put("data", JSONArray.fromObject(nodes, jsonConfig));    return json; }}

页面ajax代码

function showOrg(){ $.ajax({   type:"POST",   url:"showOrg.action",   success:function(msg){

//默认返回的为字符串，需要把字符串转化为json对象    var backMsg=eval("("+msg+")");    var tree=backMsg.result.data;    var zNodes=[];   for(var i=0;i<tree.length;i++){    var c = {"id":tree[i]["id"],"pId":tree[i]["pId"],"name":tree[i]["name"],"open":true,"click":"showChildrenNodes('"+tree[i]["id"]+"');"};    zNodes.push(c);   }   $.fn.zTree.init($("#treeDemo"), setting,zNodes);   } });  }

 

时间有限就先记录这些把。。。 把javabean转化为json时会碰到hibernate的懒加载问题，可以opensessioninvew 这样懒加载的时候session不会关闭，再就是过滤掉乱连字段，注意大小写问题！！！！！