谁有jquery+json树来着?发一个上来吧 要代码...多谢~ 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 下载附件二dojotree.rar,解压后将dist\dojotree.war部署到应用服务器即可浏览DEMO,DEMO中内置HSQLDB数据库,启动时自动加载。DEMO运行截图见附件一。 一、tree.jsp主要代码 1、首先在head中导入Dojo库(dojo.js)和TreeWidget <script>"text/javascript" src="ajax/dojo/dojo.js"> <script>"text/javascript"> dojo.require("dojo.widget.Tree"); dojo.require("dojo.widget.TreeNode"); dojo.require("dojo.widget.TreeSelector"); dojo.require("dojo.widget.TreeRPCController"); dojo.require("dojo.widget.TreeLoadingController"); dojo.require("dojo.widget.TreeContextMenu"); </script> 2、在body中放置TreeWidget,TreeLoadingController中的RPCUrl="treeServlet"为从后台获取数据的servlet名称,TreeNode中的expandLevel表示树初始张开级别 <div dojoType="TreeLoadingController" RPCUrl="treeServlet" widgetId="treeController" DNDController="create"><!--</span-->div> <div dojoType="TreeSelector" widgetId="treeSelector"><!--</span-->div> <div dojoType="Tree" DNDMode="between" selector="treeSelector" widgetId="bandTree" controller="treeController"> <div dojoType="TreeNode" title="root" widgetId="root" objectId="root" isFolder="true" childIconSrc="images/comm.gif" expandLevel="1"/> 3、建立TreeSelector事件处理函数 function treeSelectFired() { // get a reference to the treeSelector and get the selected node var treeSelector = dojo.widget.manager.getWidgetById('treeSelector'); var treeNode = treeSelector.selectedNode; // get a reference to the songDisplay div var hostDiv = document.getElementById("songDisplay"); var isFolder = treeNode['isFolder']; //alert(isFolder); if ( !isFolder) { var song = treeNode['title']; var url = treeNode['url']; link(url); } else { } } 4、将select事件处理函数关联到treeSelector function init() { //get a reference to the treeSelector var treeSelector = dojo.widget.manager.getWidgetById('treeSelector'); //connect the select event to the function treeSelectFired() dojo.event.connect(treeSelector,'select','treeSelectFired'); } dojo.addOnLoad(init); 二、主要java代码及数据结构 1、Gnmk.java中tree的属性 private String id; private String gnmkdm; //功能模块代码 private String gnmksm; //功能模块说明 private String gnmktb; //功能模块图标 private String gnmklj; //功能模块路径 private String gnmkmc; //功能模块名称 private String gnmksj; //功能模块上级代码 private String gnmkbz; //功能模块标志(‘N'为叶节点) 2、HSQLDB内存数据库加载SQL(db.sql) CREATE TABLE GNMK (ID VARCHAR, GNMKDM VARCHAR, GNMKMC VARCHAR, GNMKLJ VARCHAR, GNMKTB VARCHAR, GNMKBZ VARCHAR, GNMKSJ VARCHAR); INSERT INTO GNMK VALUES ('d098a59f0b765c30010b765d6b780001', '01', '一级目录1', null, 'system.gif', 'Y', ''); INSERT INTO GNMK VALUES ('d098a59f0b765e68010b765fda830001', '0101', '二级目录1', 'cxtjAction.do', 'system.gif', 'N', '01'); INSERT INTO GNMK VALUES ('d098a59f0b765e68010b765fda830001', '0102', '二级目录2', 'cxtjAction.do', 'system.gif', 'N', '01'); INSERT INTO GNMK VALUES ('d098a59f0b765c30010b765d6b780002', '02', '一级目录2', null, 'system.gif', 'Y', ''); INSERT INTO GNMK VALUES ('d098a59f0b765e68010b765fda830002', '0201', '二级目录1', 'cxtjAction.do', 'system.gif', 'N', '02'); INSERT INTO GNMK VALUES ('d098a59f0b765e68010b765fda830002', '0202', '二级目录2', 'cxtjAction.do', 'system.gif', 'Y', '02'); INSERT INTO GNMK VALUES ('d098a59f0b765e68010b765fda830002', '020201', '三级目录1', 'cxtjAction.do', 'system.gif', 'N', '0202'); INSERT INTO GNMK VALUES ('d098a59f0b765e68010b765fda830002', '020202', '三级目录2', 'cxtjAction.do', 'system.gif', 'N', '0202'); 3、TreeServlet .java主要代码,在getGnmkByParent(String gnmksj)方法中可以实现自己的业务,DEMO中使用GnmkDAO public class TreeServlet extends HttpServlet { private static final long serialVersionUID = 1L; protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String action = request.getParameter("action"); System.out.println("action b=>" + action); System.out.println("action b=>" + action); String data = request.getParameter("data"); if (action.equalsIgnoreCase("getChildren")) { JSONTokener jsonTokener = new JSONTokener(data); JSONObject jsonObject = (JSONObject) jsonTokener.nextValue(); JSONObject parentNodeObject = (JSONObject) jsonObject.get("node"); response.setContentType("text/json; charset=gb2312"); PrintWriter out = response.getWriter(); out.write(getChildren(parentNodeObject)); } else { } } private String getChildren(JSONObject parentNodeObject) { JSONArray result = new JSONArray(); String parentObjectId = parentNodeObject.getString("objectId");// id 唯一 // String parentWidgetId = parentNodeObject.getString("widgetId");// dm parentObjectId = parentObjectId.equalsIgnoreCase("root") ? "" : parentObjectId; System.out.println("parentObjectId=>" + parentObjectId); // 获取子功能模块 List listGnmk = this.getGnmkByParent(parentObjectId); System.out.println("listGnmk=>" + listGnmk.size()); if (listGnmk != null) { Iterator itGnmk = listGnmk.iterator(); while (itGnmk.hasNext()) { Gnmk qxgnmk = (Gnmk) itGnmk.next(); try { JSONObject jsonGnmkObject = new JSONObject(); String gnmkbz = qxgnmk.getGnmkbz(); boolean isFolder = gnmkbz.equalsIgnoreCase("Y") ? true : false; jsonGnmkObject.put("title", qxgnmk.getGnmkmc()); jsonGnmkObject.put("isFolder", isFolder); jsonGnmkObject.put("widgetId", qxgnmk.getGnmkdm()); jsonGnmkObject.put("objectId", qxgnmk.getGnmkdm()); jsonGnmkObject.put("childIconSrc", "images/" + qxgnmk.getGnmktb()); jsonGnmkObject.put("url", qxgnmk.getGnmklj()); result.put(jsonGnmkObject); } catch (JSONException e) { e.printStackTrace(); } } } return result.toString(); } private List getGnmkByParent(String gnmksj) { GnmkDAO gnmkDao = new GnmkDAO(); return gnmkDao.getGnmkByParent(gnmksj); } } 三、关于DEMO的其它配置说明 1、实现javax.servlet.ServletContextListener接口的contextInitialized方法来加载HSQLDB及其数据,ContextListener.java主要代码 public void contextInitialized(ServletContextEvent event) { try { // load the driver Class.forName("org.hsqldb.jdbcDriver"); // create the table and add sample data InputStreamReader in = new InputStreamReader(getClass().getClassLoader().getResourceAsStream("db.sql")); BufferedReader reader = new BufferedReader(in); DBUtils.setupDatabase(reader); } catch (ClassNotFoundException e) { e.printStackTrace(); } } 2、web.xml相关配置 <listener> <listener-class> dojo.sample.ContextListener <!--<span class="tag"--><!--</span-->listener-class> <!--</span-->> 本文来自: 脚本之家(www.jb51.net) 详细出处参考:http://www.jb51.net/article/8836.htm原文见http://www.jb51.net/article/8836.htm struts jquery easyui_combobox取值问题 response.sendRedirect调用时出错 java是否有加密解密API函数,高手请进 jsp中文显示问题: 请高手指点 奇怪?(急盼回复) g.drawString()能不能在循环里面 各位大侠救火:jsp不刷新页面能够让页面改变吗? Help me:jsp怎样使用带参数的构造方法的Bean? 大家都知道servlet是单实例,那么filter中如果定义成员变量,会不会出现像servlet一样的结果呢 jsp中删除多条记录
一、tree.jsp主要代码
1、首先在head中导入Dojo库(dojo.js)和TreeWidget
<script>"text/javascript" src="ajax/dojo/dojo.js">
<script>"text/javascript">
dojo.require("dojo.widget.Tree");
dojo.require("dojo.widget.TreeNode");
dojo.require("dojo.widget.TreeSelector");
dojo.require("dojo.widget.TreeRPCController");
dojo.require("dojo.widget.TreeLoadingController");
dojo.require("dojo.widget.TreeContextMenu");
</script>
2、在body中放置TreeWidget,TreeLoadingController中的RPCUrl="treeServlet"为从后台获取数据的servlet名称,TreeNode中的expandLevel表示树初始张开级别
<div dojoType="TreeLoadingController" RPCUrl="treeServlet" widgetId="treeController" DNDController="create"><!--</span-->div>
<div dojoType="TreeSelector" widgetId="treeSelector"><!--</span-->div>
<div dojoType="Tree" DNDMode="between" selector="treeSelector" widgetId="bandTree" controller="treeController">
<div dojoType="TreeNode" title="root" widgetId="root" objectId="root" isFolder="true" childIconSrc="images/comm.gif" expandLevel="1"/>
3、建立TreeSelector事件处理函数
function treeSelectFired() {
// get a reference to the treeSelector and get the selected node
var treeSelector = dojo.widget.manager.getWidgetById('treeSelector');
var treeNode = treeSelector.selectedNode;
// get a reference to the songDisplay div
var hostDiv = document.getElementById("songDisplay");
var isFolder = treeNode['isFolder'];
//alert(isFolder);
if ( !isFolder) {
var song = treeNode['title'];
var url = treeNode['url'];
link(url);
} else {
}
}
4、将select事件处理函数关联到treeSelector
function init() {
//get a reference to the treeSelector
var treeSelector = dojo.widget.manager.getWidgetById('treeSelector');
//connect the select event to the function treeSelectFired()
dojo.event.connect(treeSelector,'select','treeSelectFired');
}
dojo.addOnLoad(init);
二、主要java代码及数据结构
1、Gnmk.java中tree的属性
private String id;
private String gnmkdm; //功能模块代码
private String gnmksm; //功能模块说明
private String gnmktb; //功能模块图标
private String gnmklj; //功能模块路径
private String gnmkmc; //功能模块名称
private String gnmksj; //功能模块上级代码
private String gnmkbz; //功能模块标志(‘N'为叶节点)
2、HSQLDB内存数据库加载SQL(db.sql)
CREATE TABLE GNMK (ID VARCHAR, GNMKDM VARCHAR, GNMKMC VARCHAR, GNMKLJ VARCHAR, GNMKTB VARCHAR, GNMKBZ VARCHAR, GNMKSJ VARCHAR);
INSERT INTO GNMK VALUES ('d098a59f0b765c30010b765d6b780001', '01', '一级目录1', null, 'system.gif', 'Y', '');
INSERT INTO GNMK VALUES ('d098a59f0b765e68010b765fda830001', '0101', '二级目录1', 'cxtjAction.do', 'system.gif', 'N', '01');
INSERT INTO GNMK VALUES ('d098a59f0b765e68010b765fda830001', '0102', '二级目录2', 'cxtjAction.do', 'system.gif', 'N', '01');
INSERT INTO GNMK VALUES ('d098a59f0b765c30010b765d6b780002', '02', '一级目录2', null, 'system.gif', 'Y', '');
INSERT INTO GNMK VALUES ('d098a59f0b765e68010b765fda830002', '0201', '二级目录1', 'cxtjAction.do', 'system.gif', 'N', '02');
INSERT INTO GNMK VALUES ('d098a59f0b765e68010b765fda830002', '0202', '二级目录2', 'cxtjAction.do', 'system.gif', 'Y', '02');
INSERT INTO GNMK VALUES ('d098a59f0b765e68010b765fda830002', '020201', '三级目录1', 'cxtjAction.do', 'system.gif', 'N', '0202');
INSERT INTO GNMK VALUES ('d098a59f0b765e68010b765fda830002', '020202', '三级目录2', 'cxtjAction.do', 'system.gif', 'N', '0202');
3、TreeServlet .java主要代码,在getGnmkByParent(String gnmksj)方法中可以实现自己的业务,DEMO中使用GnmkDAO
public class TreeServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
String action = request.getParameter("action");
System.out.println("action b=>" + action);
System.out.println("action b=>" + action);
String data = request.getParameter("data");
if (action.equalsIgnoreCase("getChildren")) {
JSONTokener jsonTokener = new JSONTokener(data);
JSONObject jsonObject = (JSONObject) jsonTokener.nextValue();
JSONObject parentNodeObject = (JSONObject) jsonObject.get("node");
response.setContentType("text/json; charset=gb2312");
PrintWriter out = response.getWriter();
out.write(getChildren(parentNodeObject));
} else {
}
}
private String getChildren(JSONObject parentNodeObject) {
JSONArray result = new JSONArray();
String parentObjectId = parentNodeObject.getString("objectId");// id 唯一
// String parentWidgetId = parentNodeObject.getString("widgetId");// dm
parentObjectId = parentObjectId.equalsIgnoreCase("root") ? ""
: parentObjectId;
System.out.println("parentObjectId=>" + parentObjectId);
// 获取子功能模块
List listGnmk = this.getGnmkByParent(parentObjectId);
System.out.println("listGnmk=>" + listGnmk.size());
if (listGnmk != null) {
Iterator itGnmk = listGnmk.iterator();
while (itGnmk.hasNext()) {
Gnmk qxgnmk = (Gnmk) itGnmk.next();
try {
JSONObject jsonGnmkObject = new JSONObject();
String gnmkbz = qxgnmk.getGnmkbz();
boolean isFolder = gnmkbz.equalsIgnoreCase("Y") ? true
: false;
jsonGnmkObject.put("title", qxgnmk.getGnmkmc());
jsonGnmkObject.put("isFolder", isFolder);
jsonGnmkObject.put("widgetId", qxgnmk.getGnmkdm());
jsonGnmkObject.put("objectId", qxgnmk.getGnmkdm());
jsonGnmkObject.put("childIconSrc", "images/"
+ qxgnmk.getGnmktb());
jsonGnmkObject.put("url", qxgnmk.getGnmklj());
result.put(jsonGnmkObject);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
return result.toString();
}
private List getGnmkByParent(String gnmksj) {
GnmkDAO gnmkDao = new GnmkDAO();
return gnmkDao.getGnmkByParent(gnmksj);
}
}
三、关于DEMO的其它配置说明
1、实现javax.servlet.ServletContextListener接口的contextInitialized方法来加载HSQLDB及其数据,ContextListener.java主要代码
public void contextInitialized(ServletContextEvent event) {
try {
// load the driver
Class.forName("org.hsqldb.jdbcDriver");
// create the table and add sample data
InputStreamReader in = new InputStreamReader(getClass().getClassLoader().getResourceAsStream("db.sql"));
BufferedReader reader = new BufferedReader(in);
DBUtils.setupDatabase(reader);
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
2、web.xml相关配置
<listener>
<listener-class>
dojo.sample.ContextListener
<!--<span class="tag"--><!--</span-->listener-class>
<!--</span-->> 本文来自: 脚本之家(www.jb51.net) 详细出处参考:http://www.jb51.net/article/8836.htm原文见http://www.jb51.net/article/8836.htm