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BootStrapJstree樹形菜單的增刪改查的實現(xiàn)源碼

1.首先需下載jstree的插件點擊打開鏈接

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2.在頁面引入插件js文件css文件

3.初始化控件

 1）html

2）js 使用 demo2來初始化樹形控件

 
4.代碼解析
 
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(jié)點 
 private List childNode; 
 public List getChildNode() { 
 return childNode; 
 } 
 public void setChildNode(List 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
插件初始化我這里使用了插件的兩個參數(shù)json_data,以及plugins注意看代碼結(jié)構(gòu)
BootStrap Jstree 樹形菜單的增刪改查的實現(xiàn)源碼
4.1上圖兩個部分即初始化部分重點解釋下plugins這個參數(shù)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從后要獲取json數(shù)據(jù)返回到前臺頁面。contextmenu，是鼠標右鍵在樹形節(jié)點上會彈出增刪改查的菜單。
4.2 json數(shù)據(jù)的格式
先看展示
BootStrap Jstree 樹形菜單的增刪改查的實現(xiàn)源碼
這是一個可以無限極下分的菜單，我們可以根據(jù)上圖的目錄結(jié)構(gòu)對照下面的json數(shù)據(jù)結(jié)構(gòu)來看，這樣會更清晰。
{"data":"軟件及數(shù)據(jù)","attr":{"id":"e59365b9-7b2a-43a3-b10a-cfe03d5eb004"}, 
 "children":[ 
 {"data":"創(chuàng)新組","attr":{"id":"73919359-2a1b-4ee7-bcc2-56949e8560e8"}, 
  "children":[ 
   {"data":"大數(shù)據(jù)","attr":{"id":"a7ea6a0f-0b78-4064-803b-f2e0a95d914f"}, 
   "children":[ 
    {"data":"研發(fā)","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(shù)據(jù)，我使用的是首先查找到所有的父節(jié)點即parentid=1的時候，然后遞歸將所有的子節(jié)點加到List對象里面，緊接著再通過循環(huán)遞歸組裝無限極菜單json數(shù)據(jù)下面看數(shù)據(jù)庫數(shù)據(jù)結(jié)構(gòu)
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(jié)點 
 private List childNode; 
 public List getChildNode() { 
  return childNode; 
 } 
 public void setChildNode(List 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(diào)用這個servlet獲取json數(shù)據(jù)并返回給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(diào)用創(chuàng)建樹節(jié)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
這里是創(chuàng)建json的核心。
1）首先獲取所有的（parent=1）根節(jié)點
@Override 
 public StringBuilder createTreeNode() { 
  //創(chuàng)建部門集合 
  List departments = new ArrayList(); 
  //放置所有的根節(jié)點部門實體 
  departments = queryByParentID("1"); 
  if (departments != null) { 
   return json(departments); 
  } 
  return null; 
 } 
 public StringBuilder json(List 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 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 queryByParentID(String parentID) { 
  BaseDaoTemplate bd = new BaseDaoTemplate(); 
  List departments = new ArrayList(); 
  String sql = "select departmentid,name,parentid,orders from department where parentid=? "; 
  List params = new ArrayList(); 
  params.add(parentID); 
  departments = bd.findAllData(Department.class, sql, params); 
  if (departments.size() > 0) { 
   return departments; 
  } 
  return null; 
 } 
4.7
1.如何創(chuàng)建節(jié)點通過右鍵點擊樹形菜單彈出增加移除等操作（需在plugins里面加入contextmenu 這個例子就有）
2.綁定jstree的操作，此處以增加節(jié)點為例不一一例舉
BootStrap Jstree 樹形菜單的增刪改查的實現(xiàn)源碼
原理;通過點擊創(chuàng)建按鈕（contextMenu）即選定樹節(jié)點右鍵彈出按鈕。調(diào)用上圖的方法，上圖方法post方法通過ajax請求后臺數(shù)據(jù)把創(chuàng)建的樹節(jié)點保存到數(shù)據(jù)庫，
operation：操作的方式（創(chuàng)建，移除，修改。。）；
id:當前節(jié)點的id 即你創(chuàng)建下一個節(jié)點的parentID。
title:創(chuàng)建的新節(jié)點的名稱
有這些數(shù)據(jù)就可以字啊后臺獲取數(shù)據(jù)然后增加到數(shù)據(jù)庫。
4.8 創(chuàng)建 servlet處理所有的操作（創(chuàng)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. 
 
  * 
  * 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. 
 
  * 
  * @throws ServletException 
  *    if an error occurs 
  */ 
 @Override 
 public void init() throws ServletException { 
  // Put your code here 
 } 
} 
好了這就完成了，當然這里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(xiàn)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創(chuàng)新互聯(lián)網(wǎng)站的支持！
            
            
                        

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