java简单实现搜索指定后缀文件

 1 package sb_eclipse;
 2 import java.io.File;
 3 import java.io.IOException;
 4 import java.util.ArrayList;
 5 
 6 public class ScanSuffix {
 7     private static int ScanSuffixCount = 0;
 8     private static ArrayList<String> ScanSuffixFiles = new ArrayList<String>();
 9     
10     
11     public static void ScanSuffix(String path, String suffix) {
12         File file,tempFile;
13         file = new File(path);
14         if (! file.isDirectory()) {
15             return ;
16         }
17         if (suffix.isEmpty()) {
18             return ;
19         }
20         
21         String[] fileList = file.list();
22         for(String fileName : fileList) {
23             tempFile = new File(path + "\" + fileName);
24             if (tempFile.isDirectory()) {
25                 ScanSuffix(path + "\" + fileName, suffix);
26             }
27             if (tempFile.isFile()) {
28                 String[] splitFileName = fileName.split("\.");
29                 String ext = splitFileName[splitFileName.length - 1];
30                 if (ext.equals(suffix)) {
31                     ScanSuffixCount += 1;
32                     ScanSuffixFiles.add(path + "\" + fileName);
33                 }
34             }
35         }
36     }
37     
38     public static void main(String[] args) {
39         // TODO Auto-generated method stub
40         String path = "F:\谷歌下载";
41         String suffix = "php";
42         System.out.println("开始查找...");
43         long beginTime = System.currentTimeMillis()/1000;
44         ScanSuffix(path, suffix);
45         long endTime = System.currentTimeMillis()/1000;
46         long time = endTime - beginTime;
47         for (String fileName : ScanSuffixFiles) {
48             System.out.println(fileName);
49         }
50         System.out.println("查找结束,耗时" + Long.toString(time) + "秒");
51         System.out.println("在" + path + "目录下搜索后缀为" + suffix + "的数目有" + ScanSuffixCount + "个");
52         
53     }
54 
55 }
代码很简单。核心就是一个递归处理