BootStrap Jstree 樹形菜單的增刪改查的實現源碼。本站提示廣大學習愛好者:(BootStrap Jstree 樹形菜單的增刪改查的實現源碼)文章只能為提供參考,不一定能成為您想要的結果。以下是BootStrap Jstree 樹形菜單的增刪改查的實現源碼正文
1.首先需下載jstree的插件點擊打開鏈接
2.在頁面引入插件js文件css文件
<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
<div id="demo2" class="demo" ></div>
2)js 使用 demo2來初始化樹形控件
<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>
</pre>4.代碼解析<p></p><p><pre name="code" class="java"> import java.util.List; public class Department { // 部門id private String departmentid; // 部門名稱 private String name; // 父級部門ID private String parentid; //同級之間的排序。排序id 小的排前面 private String orders; //子節點 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.代碼解析
插件初始化我這裡使用了插件的兩個參數json_data,以及plugins注意看代碼結構
4.1上圖兩個部分即初始化部分重點解釋下plugins這個參數是jstree整合插件的地方theme表示主題,json_data將上文定義的json_data也就
是Ajax從後要獲取json數據返回到前台頁面。contextmenu,是鼠標右鍵在樹形節點上會彈出增刪改查的菜單。
4.2 json數據的格式
先看展示
這是一個可以無限極下分的菜單,我們可以根據上圖的目錄結構對照下面的json數據結構來看,這樣會更清晰。
{"data":"軟件及數據","attr":{"id":"e59365b9-7b2a-43a3-b10a-cfe03d5eb004"}, "children":[ {"data":"創新組","attr":{"id":"73919359-2a1b-4ee7-bcc2-56949e8560e8"}, "children":[ {"data":"大數據","attr":{"id":"a7ea6a0f-0b78-4064-803b-f2e0a95d914f"}, "children":[ {"data":"研發","attr":{"id":"fc20e438-e7b9-4cca-be6a-49965daab528"},"children":[]}]}]}, {"data":"項目管理","attr":{"id":"e1bdae71-6cfb-4e8c-ab29-a3eb03b9961d"},"children":[]} ] },
4.4組裝json數據,我使用的是首先查找到所有的父節點即parentid=1的時候,然後遞歸將所有的子節點加到List<chiledren>對象裡面,緊接著再通過循環遞歸組裝無限極菜單json數據下面看數據庫數據結構
import java.util.List; public class Department { // 部門id private String departmentid; // 部門名稱 private String name; // 父級部門ID private String parentid; //同級之間的排序。排序id 小的排前面 private String orders; //子節點 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 此處servlet為客戶端提供jstree的json_data。就是在初始化控件時候有ajax調用這個servlet獲取json數據並返回給json_data
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(); //此處調用創建樹節點的方法 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我們看下createTreeNode方法
這裡是創建json的核心。
1)首先獲取所有的(parent=1)根節點
@Override public StringBuilder createTreeNode() { //創建部門集合 List<Department> departments = new ArrayList<Department>(); //放置所有的根節點部門實體 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.如何創建節點通過右鍵點擊樹形菜單彈出增加移除等操作(需在plugins裡面加入contextmenu 這個例子就有)
2.綁定jstree的操作,此處以增加節點為例不一一例舉
原理;通過點擊創建按鈕(contextMenu)即選定樹節點右鍵彈出按鈕。調用上圖的方法,上圖方法post方法通過ajax請求後台數據把創建的樹節點保存到數據庫,
operation:操作的方式(創建,移除,修改。。);
id:當前節點的id 即你創建下一個節點的parentID。
title:創建的新節點的名稱
有這些數據就可以字啊後台獲取數據然後增加到數據庫。
4.8 創建 servlet處理所有的操作(創建,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 } }
好了這就完成了,當然這裡面的樹也是可以自定義圖標,自定義按鈕等操作,具體可以自己去探究。
以上所述是小編給大家介紹的BootStrap Jstree 樹形菜單的增刪改查的實現源碼,希望對大家有所幫助,如果大家有任何疑問請給我留言,小編會及時回復大家的。在此也非常感謝大家對網站的支持!