删除指定目录下的指定后缀文件

 1 package org.zln.module1.demo1;
 2
 3 import org.apache.log4j.Logger;
 4
 5 import java.io.File;
 6
 7 /**
 8  * 删除指定根目录下，及其子目录中，指定后缀的文件
 9  * Created by coolkid on 2015/6/13 0013.
10  */
11
12 public class DeleteSuffix {
13     /*默认待删除文件后缀*/
14     private static final String SUFFIX = ".jar";
15
16     protected static Logger logger = Logger.getLogger(DeleteSuffix.class);
17
18     public static void main(String[] args) {
19         /*预处理*/
20         if (null == args || args.length == 0||args.length>2){
21             throw new RuntimeException("命令参数不正确，格式为 java 根路径 后缀");
22         }
23
24         /*根路径*/
25         File rootPathFile = new File(args[0]);
26         if (!rootPathFile.exists()){
27             throw new RuntimeException("路径错误，不存在:"+rootPathFile.getAbsolutePath());
28         }
29         /*待删除后缀*/
30         String suffixCurr = args.length==2?args[1]:SUFFIX;
31
32         deleteSuffixFile(rootPathFile,suffixCurr);
33
34
35     }
36
37     /**
38      * 删除指定后缀的文件
39      * @param rootPathFile 根路径
40      * @param suffixCurr 后缀
41      */
42     private static void deleteSuffixFile(File rootPathFile, String suffixCurr) {
43         if (rootPathFile.isDirectory()){
44             File[] files = rootPathFile.listFiles();
45             for (File tempFile:files){
46                 deleteSuffixFile(tempFile,suffixCurr);
47             }
48         }else {
49             String suffix = rootPathFile.getName().substring(rootPathFile.getName().lastIndexOf("."));
50             if (suffixCurr.equalsIgnoreCase(suffix)){
51                 logger.debug("删除："+rootPathFile.getAbsolutePath());
52                 rootPathFile.delete();
53             }
54         }
55     }
56 }