文件名称：无限级树（Java递归）
文件大小：7KB
文件格式：TXT
更新时间：2011-12-03 03:19:51
堆在树
无限级树（Java递归）
2007-02-08 10:26
这几天，用java写了一个无限极的树，递归写的，可能代码不够简洁，性能不够好，不过也算是练习，这几天再不断改进。前面几个小图标的判断，搞死我了。
package com.nickol.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.nickol.utility.DB;
public class category extends HttpServlet {
/**
* The doGet method of the servlet.
*
* This method is called when a form has its tag value method equals to get.
*
* @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
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out
.println("");
out.println("");
out.println("
";//插入结尾的减号
temp.add(new Integer(0));
}
webContent += "
";//插入站点图标
webContent += rs.getString("cname");
webContent += "\n"; webContent += showCategory(Integer.parseInt(rs.getString("cid")),n,temp,"0"); } if(n==2){ webContent += "
";//插入结尾的直角
}
}else{
if(checkChild(Integer.parseInt(rs.getString("cid")))){
webContent += "
";//插入未结尾的减号
temp = (ArrayList)frontIcon.clone();
temp.add(new Integer(1));
}else{
webContent += "
";//插入三叉线
}
}
if(checkChild(Integer.parseInt(rs.getString("cid")))){
webContent += "
";//插入文件夹图标
}else{
webContent += "
";//插入文件图标
}
webContent += rs.getString("cname");
webContent += "网友评论
- 还可以解决了问题
- 多谢共享，不是我想要的，但同样感谢楼主。
- 很好,不错,謝谢楼主分享,數据结构有待加强.
- 谢谢楼主分享，虽然不是我想要的，不过还是谢谢@@@@