dtree实现动态加载树形菜单，动态插入树形菜单
1.导入 dtree文件 dtree.css img文件夹 dtree.js
2. 建立对应 的数据库 1 父ID name id
3 建立连接类 mysql 例子
package com.dtree.test;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map; import com.opensymphony.xwork2.ActionSupport; public class ConnectionManager { private static final String driver ="org.gjt.mm.mysql.Driver";
private static final String url = "jdbc:mysql://localhost:3306/yuqing?useUnicode=true&characterEncoding=utf8";
private static final String username="root";
private static final String userpwd="zfn"; public static Connection getConnection(){ Connection conn=null;
try{
Class.forName(driver);
conn=DriverManager.getConnection(url,username,userpwd);
}catch(Exception ex){
ex.printStackTrace();
}
return conn;
}
public static void closeConnection(Connection conn){
try{
if(conn!=null && (!conn.isClosed())){
conn.close();
}
}catch(SQLException ex){
ex.printStackTrace();
}
}
public static void closeResultSet(ResultSet res){
try{
if(res!=null){
res.close();
res=null;
}
}catch(SQLException ex){
ex.printStackTrace();
}
}
public static void closeStatement(PreparedStatement stmt){
try{
if(stmt!=null){
stmt.close();
}
}catch(SQLException ex){
ex.printStackTrace();
}
}
}
4. 实现类
package com.dtree.test; import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List; public class OrganizationService { private Connection conn;
private PreparedStatement titleQuery;
private ResultSet results; public List getOrganization(){
List list = new ArrayList(); try {
conn=ConnectionManager.getConnection();
String sql="select * from treetest";
titleQuery=conn.prepareStatement(sql);
results=titleQuery.executeQuery(); while(results.next()){
Organization org1 = new Organization();
org1.setId(results.getInt("id"));
org1.setParentId(results.getInt("parentId"));
org1.setName(results.getString("name")); list.add(org1);
} } catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally{ ConnectionManager.closeResultSet(results);
ConnectionManager.closeStatement(titleQuery);
ConnectionManager.closeConnection(conn);
} return list; } public int insertUser1(String name) {
int num=0;
try {
conn=ConnectionManager.getConnection();
String sql="insert into treetest (parentId,name,pid)values(0,?,1)";
titleQuery=conn.prepareStatement(sql);
titleQuery.setString(1,name); num=titleQuery.executeUpdate(); } catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
ConnectionManager.closeResultSet(results);
ConnectionManager.closeStatement(titleQuery);
ConnectionManager.closeConnection(conn);
} return num;
} public int insertUser2(int parentId,String name) {
int num=0;
try {
conn=ConnectionManager.getConnection();
String sql="insert into treetest (parentId,name,pid)values(?,?,2)";
titleQuery=conn.prepareStatement(sql);
titleQuery.setInt(1,parentId);
titleQuery.setString(2,name); num=titleQuery.executeUpdate(); } catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
ConnectionManager.closeResultSet(results);
ConnectionManager.closeStatement(titleQuery);
ConnectionManager.closeConnection(conn);
} return num;
}
public List getOrganization1(){
List list = new ArrayList(); try {
conn=ConnectionManager.getConnection();
String sql="select * from treetest where pid=1";
titleQuery=conn.prepareStatement(sql);
results=titleQuery.executeQuery(); while(results.next()){
Organization org1 = new Organization();
org1.setId(results.getInt("id"));
org1.setParentId(results.getInt("parentId"));
org1.setName(results.getString("name")); list.add(org1);
} } catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally{ ConnectionManager.closeResultSet(results);
ConnectionManager.closeStatement(titleQuery);
ConnectionManager.closeConnection(conn);
} return list;
}
}
5. 实体类
package com.dtree.test;
public class Organization {
private int id;
private String name;
private int parentId;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getParentId() {
return parentId;
}
public void setParentId(int parentId) {
this.parentId = parentId;
}
}
6 action
package com.dtree.test;
import java.util.ArrayList;
import java.util.List; import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport; public class DtreeAction extends ActionSupport { List list = new ArrayList();
private String name = null;
private String name2 = null;
private int parentId;
public int getParentId() {
return parentId;
}
public void setParentId(int parentId) {
this.parentId = parentId;
}
public String getName2() {
return name2;
}
public void setName2(String name2) {
this.name2 = name2;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String execute() {
OrganizationService service = new OrganizationService();
list = service.getOrganization(); return SUCCESS;
} public String insertname1() {
OrganizationService service = new OrganizationService();
System.out.print(name);
int num=service.insertUser1(name); return SUCCESS;
} public String insertname2() {
OrganizationService service = new OrganizationService();
System.out.println(parentId);
System.out.println(name);
int num=service.insertUser2(parentId, name2); return SUCCESS;
} public List getList() {
return list;
}
public void setList(List list) {
this.list = list;
}
}
6 struts xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd"> <struts>
<package name="dtree" namespace="/dtree" extends="struts-default">
<action name="dtree" class="com.dtree.test.DtreeAction">
<result name="success">/dtree.jsp</result>
</action> <action name="insertname1" class="com.dtree.test.DtreeAction" method="insertname1">
<result name="success">/dtree.jsp</result>
</action> <action name="insertname2" class="com.dtree.test.DtreeAction" method="insertname2">
<result name="success">/dtree.jsp</result>
</action> </package> </struts>
7 显示树形菜单 jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@ taglib prefix="s" uri="/struts-tags" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<base href="<%=basePath%>"> <title>树形结构例子</title>
<link rel="stylesheet" type="text/css" href="styles.css">
<link rel="StyleSheet" href="css/dtree.css" type="text/css" />
<script type="text/javascript" src="script/dtree.js"></script>
</head> <body>
<div class="dtree">
<script type="text/javascript">
d = new dTree('d');
//构造根节点
d.add(0,-1,'学校人员分布'); <s:iterator value="list">
d.add(<s:property value="id"/>,<s:property value="parentId"/>,'<s:property value="name"/>','example01.html');
</s:iterator>
document.write(d);
</script> </div>
</body>
</html>
8 动态增加 树形菜单列的jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="com.dtree.test.*" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<% %>
<html>
<head>
<title></title>
<script type="text/javascript">
function sbmt(){
document.fm.action="dtree/insertname1.action";
fm.submit();
}
function sbmt2(){
document.fm.action="dtree/insertname2.action";
fm.submit();
}
</script> </head>
<body> <form name="fm" method="post" action="">
<p>m > <br></p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<table width="846" height="63" border="0">
<tr>
<th width="118" scope="col"><div align="center">插入一级名称</div></th>
<th width="217" scope="col"><div align="center">
<input type="text" name="name">
</div></th>
<th width="185" scope="col"> </th>
<th width="239" scope="col"><div align="center">
<input type="button" onClick="return sbmt()" name="Submit" value="提交">
</div></th>
<th width="65" scope="col"> </th>
</tr>
<tr>
<td><div align="center">插入二级名称</div></td>
<td><div align="center">
<input type="text" name="name2">
</div></td>
<td><select name="parentId" >
<%
OrganizationService o=new OrganizationService();
List list=o.getOrganization1();
for(int i=0;i<list.size();i++){
Organization o1=(Organization)list.get(i);
%>
<option value=<%=o1.getId() %> selected><%=o1.getName() %></option>
<%} %>
</select> </td>
<td><div align="center">
<input type="button" onClick="return sbmt2<span style="white-space:pre"> </span>()" name="Submit2" value="提交">
</div></td>
<td> </td>
</tr>
<tr>
<td><div align="center">插入三级名称</div></td>
<td><div align="center">
<input type="text" name="name3">
</div></td>
<td><select name="select2">
</select></td>
<td><div align="center">
<input type="button" name="Submit3" value="提交">
</div></td>
<td> </td>
</tr>
</table>
</form> </body>
</html>
http://blog.csdn.net/zhangfuning1986/article/details/7362109
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