关于java的收集

获取java目录的路径

http://ahomeeye.iteye.com/blog/896534

 

 java正则表达式教程

http://www.java3z.com/cwbwebhome/article/article8/Regex/Java.Regex.Tutorial.html#reg9_3

java读取Map集合的方法

http://yuexiaowen.iteye.com/blog/504929

关于获取地址的问题

<%
 String basePath = request.getScheme() + "s://"
   + request.getServerName() + ":" + request.getServerPort()
   + request.getContextPath();
%>

 

关于生成文件夹的代码(带文件夹验证)：

 

 

import java.io.*;

public class Demo
{
  public static void main( String[] args)
  {
    File   dirFile;
    File   tempFile;
    boolean bFile;
    String   sFileName;
    
    bFile = false;

    try
    {
        dirFile = new File("E://test");
        bFile   = dirFile.exists();//验证文件夹是否存在

        if( bFile == true )
        {
          System.out.println("The folder exists.");
        }
        else
        {
          System.out.println("The folder do not exist,now trying to create a one...");
          bFile = dirFile.mkdir();//开始创建文件夹
          if( bFile == true )
          {
            System.out.println("Create successfully!");
          }
          else
          {
            System.out.println("Disable to make the folder,please check the disk is full or not.");
            System.exit(1);
          }
        }