Java实现ftp上传文件、文件夹

 1     import java.io.File;  
 2     import java.io.FileInputStream;  
 3     import org.apache.commons.net.ftp.FTPClient;  
 4     import org.apache.commons.net.ftp.FTPReply;  
 5       
 6     public class test {    
 7          
 8         private  FTPClient ftp;    
 9         /** 
10          *  
11          * @param path 上传到ftp服务器哪个路径下    
12          * @param addr 地址 
13          * @param port 端口号 
14          * @param username 用户名 
15          * @param password 密码 
16          * @return 
17          * @throws Exception 
18          */  
19         private  boolean connect(String path,String addr,int port,String username,String password) throws Exception {    
20             boolean result = false;    
21             ftp = new FTPClient();    
22             int reply;    
23             ftp.connect(addr,port);    
24             ftp.login(username,password);    
25             ftp.setFileType(FTPClient.BINARY_FILE_TYPE);    
26             reply = ftp.getReplyCode();    
27             if (!FTPReply.isPositiveCompletion(reply)) {    
28                 ftp.disconnect();    
29                 return result;    
30             }    
31             ftp.changeWorkingDirectory(path);    
32             result = true;    
33             return result;    
34         }    
35         /** 
36          *  
37          * @param file 上传的文件或文件夹 
38          * @throws Exception 
39          */  
40         private void upload(File file) throws Exception{    
41             if(file.isDirectory()){         
42                 ftp.makeDirectory(file.getName());              
43                 ftp.changeWorkingDirectory(file.getName());    
44                 String[] files = file.list();           
45                 for (int i = 0; i < files.length; i++) {    
46                     File file1 = new File(file.getPath()+"\"+files[i] );    
47                     if(file1.isDirectory()){    
48                         upload(file1);    
49                         ftp.changeToParentDirectory();    
50                     }else{                  
51                         File file2 = new File(file.getPath()+"\"+files[i]);    
52                         FileInputStream input = new FileInputStream(file2);    
53                         ftp.storeFile(file2.getName(), input);    
54                         input.close();                          
55                     }               
56                 }    
57             }else{    
58                 File file2 = new File(file.getPath());    
59                 FileInputStream input = new FileInputStream(file2);    
60                 ftp.storeFile(file2.getName(), input);    
61                 input.close();      
62             }    
63         }    
64        public static void main(String[] args) throws Exception{  
65           test t = new test();  
66           t.connect("", "localhost", 21, "yhh", "yhhazr");  
67           File file = new File("e:\uploadify");  
68           t.upload(file);  
69        }  
70     }
其中port：21是默认端口，可以不写