1.首先需下载jstree的插件点击打开链接
2.在页面引入插件js文件css文件
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<link rel= "stylesheet" href= "plugins/jstree/themes/classic/style.css" rel= "external nofollow" > <script type= "text/javascript" src= "plugins/jstree/_lib/jquery.js" ></script> <script type= "text/javascript" src= "plugins/jstree/_lib/jquery.cookie.js" ></script> <script type= "text/javascript" src= "plugins/jstree/_lib/jquery.hotkeys.js" ></script> <script type= "text/javascript" src= "plugins/jstree/jquery.jstree.js" ></script> |
3.初始化控件
1)html
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<div id= "demo2" class= "demo" style= "height:100px;" ></div> |
2)js 使用 demo2来初始化树形控件
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<script type= "text/javascript" class= "source below" > $( function () { $( "#demo2" ).jstree( { "json_data" : { "ajax" : { "url" : "http://localhost:8080/MemberManager/DepartmentTreeJson" , "data" : function (n) { // the result is fed to the AJAX request `data` option return { "operation" : "get_children" , "id" : n.attr ? n .attr( "id" ) .replace( "node_" , "" ) : 1 }; } } }, "plugins" : [ "themes" , "json_data" , "ui" , "crrm" , "contextmenu" , "search" ], }) .bind( "loaded.jstree" , function (event, data) { }) .bind( "select_node.jstree" , function (event, data) { if (data.rslt.obj .attr( "id" ) != undefined) { } }) .bind( "remove.jstree" , function (e, data) { data.rslt.obj.each( function () { $.ajax({ async : false , type : 'POST' , url : "http://localhost:8080/MemberManager/CreateNodeForDepartment" , data : { "operation" : "remove_node" , "id" : this .id.replace( "node_" , "" ) }, success : function (r) { if (!r.status) { data.inst.refresh(); } } }); }); }) .bind( "remove.jstree" , function (e, data) { data.rslt.obj.each( function () { $.ajax({ async : false , type : 'POST' , url : "http://localhost:8080/MemberManager/CreateNodeForDepartment" , data : { "operation" : "remove_node" , "id" : this .id .replace( "node_" , "" ) }, success : function ( r) { if (!r.status) { data.inst.refresh(); } } }); }); }) .bind( "create.jstree" , function (e, data) { $.post( "http://localhost:8080/MemberManager/CreateNodeForDepartment" , { "operation" : "create_node" , "id" : data.rslt.parent .attr( "id" ) .replace( "node_" , "" ), "position" : data.rslt.position, "title" : data.rslt.name, "type" : data.rslt.obj .attr( "rel" ) }, function (r) { if (r.status) { $(data.rslt.obj).attr( "id" , "node_" + r.id); } else { data.inst.refresh(); $.jstree.rollback(data.rlbk); } }); }) .bind( "rename.jstree" , function (e, data) { $.post( "http://localhost:8080/MemberManager/CreateNodeForDepartment" , { "operation" : "rename_node" , "id" : data.rslt.obj .attr( "id" ) .replace( "node_" , "" ), "title" : data.rslt.new_name }, function (r) { if (!r.status) { data.inst.refresh(); $.jstree.rollback(data.rlbk); } }); }) // 1) the loaded event fires as soon as data is parsed and inserted // 2) but if you are using the cookie plugin or the core `initially_open` option: .one( "reopen.jstree" , function (event, data) { }) // 3) but if you are using the cookie plugin or the UI `initially_select` option: .one( "reselect.jstree" , function (event, data) { }); }); </script> |
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</pre>4.代码解析<p></p><p><pre name= "code" class= "java" > import java.util.List; public class Department { // 部门id private String departmentid; // 部门名称 private String name; // 父级部门ID private String parentid; //同级之间的排序。排序id 小的排前面 private String orders; //子节点 private List<Department> childNode; public List<Department> getChildNode() { return childNode; } public void setChildNode(List<Department> childNode) { this .childNode = childNode; } public String getDepartmentid() { return departmentid; } public void setDepartmentid(String departmentid) { this .departmentid = departmentid; } public String getName() { return name; } public void setName(String name) { this .name = name; } public String getParentid() { return parentid; } public void setParentid(String parentid) { this .parentid = parentid; } public String getOrders() { return orders; } public void setOrders(String orders) { this .orders = orders; } @Override public String toString(){ return "[departmentID:" + this .departmentid+ "departmentName:" + this .name+ "parentID:" + this .parentid+ "orders:" + this .orders+ "]" ; } } |
4.代码解析
插件初始化我这里使用了插件的两个参数json_data,以及plugins注意看代码结构
4.1上图两个部分即初始化部分重点解释下plugins这个参数是jstree整合插件的地方theme表示主题,json_data将上文定义的json_data也就
是Ajax从后要获取json数据返回到前台页面。contextmenu,是鼠标右键在树形节点上会弹出增删改查的菜单。
4.2 json数据的格式
先看展示
这是一个可以无限极下分的菜单,我们可以根据上图的目录结构对照下面的json数据结构来看,这样会更清晰。
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{ "data" : "软件及数据" , "attr" :{ "id" : "e59365b9-7b2a-43a3-b10a-cfe03d5eb004" }, "children" :[ { "data" : "创新组" , "attr" :{ "id" : "73919359-2a1b-4ee7-bcc2-56949e8560e8" }, "children" :[ { "data" : "大数据" , "attr" :{ "id" : "a7ea6a0f-0b78-4064-803b-f2e0a95d914f" }, "children" :[ { "data" : "研发" , "attr" :{ "id" : "fc20e438-e7b9-4cca-be6a-49965daab528" }, "children" :[]}]}]}, { "data" : "项目管理" , "attr" :{ "id" : "e1bdae71-6cfb-4e8c-ab29-a3eb03b9961d" }, "children" :[]} ] }, |
4.4组装json数据,我使用的是首先查找到所有的父节点即parentid=1的时候,然后递归将所有的子节点加到List<chiledren>对象里面,紧接着再通过循环递归组装无限极菜单json数据下面看数据库数据结构
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import java.util.List; public class Department { // 部门id private String departmentid; // 部门名称 private String name; // 父级部门ID private String parentid; //同级之间的排序。排序id 小的排前面 private String orders; //子节点 private List<Department> childNode; public List<Department> getChildNode() { return childNode; } public void setChildNode(List<Department> childNode) { this .childNode = childNode; } public String getDepartmentid() { return departmentid; } public void setDepartmentid(String departmentid) { this .departmentid = departmentid; } public String getName() { return name; } public void setName(String name) { this .name = name; } public String getParentid() { return parentid; } public void setParentid(String parentid) { this .parentid = parentid; } public String getOrders() { return orders; } public void setOrders(String orders) { this .orders = orders; } @Override public String toString(){ return "[departmentID:" + this .departmentid+ "departmentName:" + this .name+ "parentID:" + this .parentid+ "orders:" + this .orders+ "]" ; } } |
4.5 此处servlet为客户端提供jstree的json_data。就是在初始化控件时候有ajax调用这个servlet获取json数据并返回给json_data
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import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import cn.goldwind.www.service.DepartmentService; import cn.goldwind.www.serviceimpl.DepartmentServiceImpl; public class DepartmentTreeJson extends HttpServlet { /** * */ private static final long serialVersionUID = 1L; public DepartmentTreeJson() { super (); } @Override public void destroy() { super .destroy(); // Just puts "destroy" string in log // Put your code here } @Override public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding( "utf-8" ); response.setContentType( "text/html;charset=UTF-8" ); PrintWriter out = response.getWriter(); DepartmentService deptService= new DepartmentServiceImpl(); //此处调用创建树节点的方法 StringBuilder json=deptService.createTreeNode(); json.deleteCharAt(json.length()- 1 ); System.out.println(json); out.print( "[" +json+ "]" ); out.flush(); out.close(); } @Override public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } @Override public void init() throws ServletException { // Put your code here } } |
4.6上面servlet我们看下createTreeNode方法
这里是创建json的核心。
1)首先获取所有的(parent=1)根节点
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@Override public StringBuilder createTreeNode() { //创建部门集合 List<Department> departments = new ArrayList<Department>(); //放置所有的根节点部门实体 departments = queryByParentID( "1" ); if (departments != null ) { return json(departments); } return null ; } public StringBuilder json(List<Department> departments) { for ( int i = 0 ; i < departments.size(); i++) { json.append( '{' ); json.append( ""data":"" ).append(departments.get(i).getName()) .append( ""," ); json.append( ""attr":{"id":"" ).append(departments.get(i).getDepartmentid()).append( ""}," ); List<Department> deptchild = queryByParentID(departments.get(i) .getDepartmentid()); json.append( ""children":" ); json.append( '[' ); if (deptchild != null ) { json(deptchild); if ( "1" .equals(departments.get(i).getParentid())){ json.deleteCharAt(json.length()- 1 ); json.append( ']' ); json.append( '}' ); json.append( ',' ); } if (! "1" .equals(departments.get(i).getParentid())&&deptchild!= null ){ json.deleteCharAt(json.length()- 1 ); json.append( ']' ); json.append( '}' ); json.append( ',' ); } } else { json.append( ']' ); json.append( '}' ); json.append( ',' ); } } return json; } @Override public List<Department> queryByParentID(String parentID) { BaseDaoTemplate bd = new BaseDaoTemplate(); List<Department> departments = new ArrayList<Department>(); String sql = "select departmentid,name,parentid,orders from department where parentid=? " ; List<Object> params = new ArrayList<Object>(); params.add(parentID); departments = bd.findAllData(Department. class , sql, params); if (departments.size() > 0 ) { return departments; } return null ; } |
4.7
1.如何创建节点通过右键点击树形菜单弹出增加移除等操作(需在plugins里面加入contextmenu 这个例子就有)
2.绑定jstree的操作,此处以增加节点为例不一一例举
原理;通过点击创建按钮(contextMenu)即选定树节点右键弹出按钮。调用上图的方法,上图方法post方法通过ajax请求后台数据把创建的树节点保存到数据库,
operation:操作的方式(创建,移除,修改。。);
id:当前节点的id 即你创建下一个节点的parentID。
title:创建的新节点的名称
有这些数据就可以字啊后台获取数据然后增加到数据库。
4.8 创建 servlet处理所有的操作(创建,移除,修改。。)
- import java.io.IOException;
- import java.io.PrintWriter;
- import java.util.UUID;
- import javax.servlet.ServletException;
- import javax.servlet.http.HttpServlet;
- import javax.servlet.http.HttpServletRequest;
- import javax.servlet.http.HttpServletResponse;
- import cn.goldwind.www.pojo.Department;
- import cn.goldwind.www.service.DepartmentService;
- import cn.goldwind.www.serviceimpl.DepartmentServiceImpl;
- public class CreateNodeForDepartment extends HttpServlet {
- private static final long serialVersionUID = 1L;
- public CreateNodeForDepartment() {
- super();
- }
- @Override
- public void destroy() {
- super.destroy(); // Just puts "destroy" string in log
- // Put your code here
- }
- @Override
- public void doGet(HttpServletRequest request, HttpServletResponse response)
- throws ServletException, IOException {
- request.setCharacterEncoding("utf-8");
- response.setContentType("text/html;charset=UTF-8");
- PrintWriter out = response.getWriter();
- DepartmentService deptService=new DepartmentServiceImpl();
- if("rename_node".equals(request.getParameter("operation"))){
- String id=request.getParameter("id");
- String title=request.getParameter("title");
- Department dept=new Department();
- dept.setDepartmentid(id);
- deptService.modifyDepartment(dept, title);
- }else if("create_node".equals(request.getParameter("operation"))){
- String id=request.getParameter("id");
- String title=request.getParameter("title");
- Department dept=new Department();
- dept.setDepartmentid(UUID.randomUUID().toString());
- dept.setName(title);
- dept.setParentid(id);
- deptService.insertDepartment(dept);
- }else if("remove_node".equals(request.getParameter("operation"))){
- String id=request.getParameter("id");
- Department dept=new Department();
- dept.setDepartmentid(id);
- deptService.deleteDepartment(dept);
- }
- out.flush();
- out.close();
- }
- /**
- * The doPost method of the servlet. <br>
- *
- * This method is called when a form has its tag value method equals to
- * post.
- *
- * @param request
- * the request send by the client to the server
- * @param response
- * the response send by the server to the client
- * @throws ServletException
- * if an error occurred
- * @throws IOException
- * if an error occurred
- */
- @Override
- public void doPost(HttpServletRequest request, HttpServletResponse response)
- throws ServletException, IOException {
- doGet(request, response);
- }
- /**
- * Initialization of the servlet. <br>
- *
- * @throws ServletException
- * if an error occurs
- */
- @Override
- public void init() throws ServletException {
- // Put your code here
- }
- }
好了这就完成了,当然这里面的树也是可以自定义图标,自定义按钮等操作,具体可以自己去探究。
以上所述是小编给大家介绍的BootStrap Jstree 树形菜单的增删改查的实现源码,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持!
原文链接:http://blog.csdn.net/u010288264/article/details/50896479