Tree Mosaic--"DRP"

/** * Sub-leaf node before adding a-number, non-leaf node before adding a + sign * @param conn * @param ID * @param level * @throws SQLException */private void readclient Tree (Connection conn,int id,int level) throws Sqlexception{string sql= "select * from T_client where pid=?"; PreparedStatement Pstmt=null; ResultSet rs=null;try {pstmt=conn.preparestatement (SQL);p Stmt.setint (1, id); Rs =pstmt.executequery (); while (Rs.next ()) {sbtreehtml.append ("<div>");//div begins sbtreehtml.append ("\ n"); for (int i=0;i<level;i++) { Sbtreehtml.append (" \ n"); *///if the traversed node is a leaf node, + name + carriage return, if not traversed by the leaf node,-name Enter//if ("N". Equals (Rs.getstring ("Is_leaf"))) {if (Constants.NO.equals (rs.getstring ("Is_leaf"))) {Sbtreehtml.append (" "+rs.getstring (" name ") +" </a> "); Sbtreehtml.append (" \ n "); Sbtreehtml.append ("<div style=\" display:none;\ "id=\" div "+ rs.getint (" id ") +" \ ">"); sbtreehtml.append ("\ n"); Readclienttree (Conn, rs.getint ("id"), level+1), Sbtreehtml.append ("</div>"); Sbtreehtml.append ("\ n");} Else{sbtreehtml.append (" ");} Else{sbtreehtml.append ("<a href=\" client_node_crud.jsp\ "target=\" clientdispareaframe\ ">" +rs.getString (" Name ") +" </a> ");} Sbtreehtml.append ("\ n");} Sbtreehtml.append ("</div>");//div end SbtreehTml.append ("\ n");}} Finally {Dbutil.close (RS);D butil.close (pstmt);}}

Static class:

/** *  */package com.bjpowernode.drp.util;/** * @ClassName: Constants * @Description: System Common Constants * @author WM * @date January 2016 1st PM 4:14:41 */public class Constants {public static final string no= "N";p ublic static final string yes= "Y";}

JSP page:

<%@ page language= "java" contenttype= "text/html; charset=gb18030 "pageencoding=" GB18030 "%> <% @page import=" com.bjpowernode.drp.basedata.manager.* "%>< Html>
<%=%> Gets the value of a variable on the page
Class to Invoke:
/** *  */package com.bjpowernode.drp.basedata.manager;import com.bjpowernode.drp.basedata.domain.client;/** * @  Classname:clientmanager * @Description: single example implementation * @author WM * @date  */public class Clientmanager {//static class private static Clientmanager instance=new Clientmanager (); Private Clientmanager () {  }//static method public  static Clientmanager getinstance () {return instance;} /** * */  @SuppressWarnings (value = "All") public String Clientmanager () {return new Clienttreereader (). Getclienttreehtmlstring ();} /** * Query reseller and region by ID * @param ID * @return Returns a client object if present, otherwise null */public client Findclientorregionbyid (int id) {return nul l;}}
Page tree structure, although can not support additions and deletions of synchronization, but to achieve a different node display. IMG1 im1 Div1, if it is the parent node, display the + number, name, carriage return, if not the traversed leaf node,-number, name, enter.
Tree Mosaic--"DRP"