EasyUI Editable Tree

效果如图：

Create Tree

<ul id="tt"></ul>

$('#tt').etree({

	url: 'tree_data.json',

	createUrl: ...,

	updateUrl: ...,

	destroyUrl: ...,

	dndUrl: ...

});

设置url,createUrl,updateUrl,destroyUrl,dndUrl属性来自动同步数据到服务器

url: 返回树的数据

createUrl: 当创建一个新的节点,tree将传入名为parentId即表示父节点ID的参数

updateUrl: 当更新一个节点,将传入id和text参数到服务器

destroyUrl: 当销毁一个节点,传入id参数

dndUrl: 当拖放节点,将传入以下参数到服务器。ID：被拖动的ID,targetId:被拖至到的ID

Demo：

<body>

     <a href="#" onclick="javascript:$('#tt').etree('create')">Create</a>

     <a href="#" onclick="javascript:$('#tt').etree('edit')">Edit</a>

     <a href="#" onclick="javascript:$('#tt').etree('destroy')">Destroy</a>

     <ul id=tt></ul>

</body>

<script type="text/javascript">

     $('#tt').etree({

	  url: 'treeLoad.action',

	  createUrl: 'treeCreate.action',

	  updateUrl: 'treeUpdate.action',

	  destroyUrl: 'treeDestroy.action',

	  dndUrl: 'treeDnd.action'

     });

</script>

struts.xml

<!DOCTYPE struts PUBLIC

	"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

	"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

	<package name="tree_json" extends="json-default">

		<action name="treeLoad" method="treeLoad" class="com.home.web.TreeAction">

			<result type="json">

				<param name="root">treeNodes</param>

			</result>

		</action>

		<action name="treeCreate" method="treeCreate" class="com.home.web.TreeAction">

			<result type="json">

				<param name="root">treeNodes</param>

			</result>

		</action>

		<action name="treeUpdate" method="treeUpdate" class="com.home.web.TreeAction">

			<result type="json">

				<param name="root">treeNodes</param>

			</result>

		</action>

		<action name="treeDestroy" method="treeDestroy" class="com.home.web.TreeAction">

			<result type="json">

				<param name="root">treeNodes</param>

			</result>

		</action>

		<action name="treeDnd" method="treeDnd" class="com.home.web.TreeAction">

			<result type="json">

				<param name="root">treeNodes</param>

			</result>

		</action>

	</package>

</struts>

需要封装对象Tree

public class TreeNode {

	private static final long serialVersionUID = 1L;

	private String id;   // 节点id

	private String text; // 显示的节点文本

	private String state = "open"; // 节点状态,'open'或者 'closed',默认是 'open'

	private boolean checked;       // 指明检查节点是否选中.

	public TreeNode() {

	}

	public TreeNode(String id, String text, String state, boolean checked) {

		this.id = id;

		this.text = text;

		this.state = state;

		this.checked = checked;

	}

	//省略setXXX(),getXXX()

}

Action方法实现

/**

 * 查询数据使用JDBC进行操作

 *

 */

public class TreeAction {

	private List<TreeNode> treeNodes = new ArrayList<TreeNode>(); // 返回的JSON数据

	private String id; // 树组件使用的ID

	private String parentId; // 树父ID

	private String text; // 显示文本

	private String targetId; // 拖拽目标ID

	/**

	 * 树展现

	 *

	 * @return

	 */

	public String treeLoad() {

		Statement sta = null;

		ResultSet rs = null;

		try {

			Connection conn = ConnectionManager.getConnection();

			sta = conn.createStatement();

			String sql = "";

			if (id == null) { // 如果id为null或0则是根节点

				sql = "select * from easyui_tree where parentid = '' or parentid = '0'";

			} else { // 查询下面的子节点

				sql = "select * from easyui_tree where parentid = " + id;

			}

			rs = sta.executeQuery(sql);

			while (rs.next()) {

				String id = rs.getString("id");

				String name = rs.getString("name");

				TreeNode node = new TreeNode();

				node.setId(id);

				node.setText(name);

				node.setChecked(false);

				// 判断是否有子节点，如果有则closed 否则open

				if (isChildrenNode(id)) {

					node.setState("closed");

				} else {

					node.setState("open");

				}

				treeNodes.add(node);

			}

			// 关闭所有资源

			ConnectionManager.closeAll(rs, sta, conn);

		} catch (SQLException e) {

			e.printStackTrace();

		}

		return "success";

	}

	/**

	 * 创建tree

	 *

	 * @return

	 */

	public String treeCreate() {

		Statement sta = null;

		ResultSet rs = null;

		try {

			Connection conn = ConnectionManager.getConnection();

			sta = conn.createStatement();

			//ID为自增,无需插入

			String sql = "insert into easyui_tree(NAME,parentid) values('','" + parentId + "')";

			sta.execute(sql);

			// 关闭所有资源

			ConnectionManager.closeAll(rs, sta, conn);

		} catch (SQLException e) {

			e.printStackTrace();

		}

		return "success";

	}

	/**

	 * 修改tree

	 *

	 * @return

	 */

	public String treeUpdate() {

		Statement sta = null;

		ResultSet rs = null;

		try {

			Connection conn = ConnectionManager.getConnection();

			sta = conn.createStatement();

			String sql = "update easyui_tree set name = '" + text + "' where id = '" + id + "'";

			sta.executeUpdate(sql);

			// 关闭所有资源

			ConnectionManager.closeAll(rs, sta, conn);

		} catch (SQLException e) {

			e.printStackTrace();

		}

		return "success";

	}

	/**

	 * 删除tree

	 *

	 * @return

	 */

	public String treeDestroy() {

		Statement sta = null;

		ResultSet rs = null;

		try {

			Connection conn = ConnectionManager.getConnection();

			sta = conn.createStatement();

			String sql = "delete from easyui_tree where id = '" + id + "'";

			sta.executeUpdate(sql);

			// 关闭所有资源

			ConnectionManager.closeAll(rs, sta, conn);

		} catch (SQLException e) {

			e.printStackTrace();

		}

		return "success";

	}

	/**

	 * 拖拽

	 *

	 * @return

	 */

	public String treeDnd() {

		Statement sta = null;

		ResultSet rs = null;

		try {

			Connection conn = ConnectionManager.getConnection();

			sta = conn.createStatement();

			//将parentid改为拖拽至目标ID

			String sql = "update  easyui_tree set parentid = '" + targetId + "' where id = '" + id + "'";

			sta.executeUpdate(sql);

			// 关闭所有资源

			ConnectionManager.closeAll(rs, sta, conn);

		} catch (SQLException e) {

			e.printStackTrace();

		}

		return "success";

	}

	/**

	 * 判断是否有子节点

	 *

	 * @return

	 */

	public boolean isChildrenNode(String id) {

		Boolean flag = false;

		Statement sta = null;

		ResultSet rs = null;

		try {

			Connection conn = ConnectionManager.getConnection();

			sta = conn.createStatement();

			String sql = "select * from easyui_tree where parentid = " + id;

			rs = sta.executeQuery(sql);

			while (rs.next()) {

				flag = true;

			}

			// 关闭所有资源

			ConnectionManager.closeAll(rs, sta, conn);

		} catch (SQLException e) {

			e.printStackTrace();

		}

		return flag;

	}

	//省略setXXX(),getXXX()方法

}

获取Connection的ConnectionManager封装类参见http://blog.****.net/itmyhome1990/article/details/38818449

数据库脚本

create database easyui;

use easyui;

CREATE TABLE easyui_tree(

	id  INT PRIMARY KEY NOT NULL AUTO_INCREMENT,

	NAME VARCHAR(10),

	parentid VARCHAR(10)

);

insert into easyui_tree values('1','北京','0');

insert into easyui_tree values('2','上海','0');

insert into easyui_tree values('3','深圳','0');

insert into easyui_tree values('4','广州','0');

insert into easyui_tree values('5','海淀','1');

insert into easyui_tree values('6','朝阳','1');

insert into easyui_tree values('7','昌平','1');

insert into easyui_tree values('8','西二旗','5');

insert into easyui_tree values('9','上地','5');

项目源码下载：http://download.****.net/detail/itmyhome/7856545

作者：itmyhome

出处：http://blog.****.net/itmyhome1990/article/details/38846521

秒客网

EasyUI Editable Tree

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