Java USES FTP upload a file, not an error, the server has not uploaded, strives for the bosses to so-CodePudding

 import org.apache.commons.net.ftp.FTPClient; 
The import org.apache.commons.net.ftp.FTPReply; 

Import the Java. IO. The File; 
Import the Java. IO. FileInputStream; 
Import the Java. IO. IOException; 
Import the Java. IO. InputStream; 

Public class Ftp1 {

/* * 
* * upload a local file to the FTP server 
*/
Public static void upLoadFromProduction (String url,//FTP server hostname 
Int port,//FTP server port 
String username,//FTP login name 
String password,//FTP password 
String path,//FTP server directory 
String filename,//upload file on the FTP server 
String orginfilename//input stream file name 
) {
Try {
FileInputStream in=new FileInputStream (new File (orginfilename)); 
A Boolean flag=uploadFile (url, port, username, password, path, filename, in); 
System. The out. Println (flag); 
} the catch (Exception e) {
e.printStackTrace(); 
} 
} 
/* * 
* Description: upload a file to the FTP server 
* @ Version 1.0 
* @ url param FTP server hostname 
* @ param port FTP server port 
* @ param username login FTP account 
* @ param password login the FTP password 
* @ param path FTP server directory 
* @ param filename upload file on the FTP server 
* @ param input input stream 
* @ return returns true on success, otherwise it returns false * 
*/
Public static Boolean uploadFile (String url,//FTP server hostname 
Int port,//FTP server port 
String username,//FTP login name 
String password,//FTP password 
String path,//FTP server directory 
String filename,//upload file on the FTP server 
InputStream input//input stream 
) {
boolean success=false; 
FTPClient FTP=new FTPClient (); 
FTP. SetControlEncoding (" GBK "); 
Try {
Int the reply; 
FTP. Connect (url, port);//connect to FTP server 
//if the default port, you can use the FTP. Connect (url) connected directly to the FTP server 
FTP. Login (username, password);//login 
Reply=FTP. GetReplyCode (); 
if (! FTPReply. IsPositiveCompletion (reply)) {
FTP. Disconnect (); 
The return success. 
} 
FTP. SetFileType (FTPClient. BINARY_FILE_TYPE); 
FTP. MakeDirectory (path); 
FTP. ChangeWorkingDirectory (path); 
FTP. EnterLocalPassiveMode (); 
FTP. StoreFile ("/usr/" + filename, input); 

Input. The close (); 
FTP. Logout (); 
success=true; 
} the catch (IOException e) {
e.printStackTrace(); 
} the finally {
If (FTP) isConnected ()) {
Try {
FTP. Disconnect (); 
} the catch (IOException ioe) {
} 
} 
} 
The return success. 
} 
//test 
Public static void main (String [] args) {

UpLoadFromProduction (" 49.233.211.241 ", 21, "ubuntu", "JDyy0707", "/", "test1. JPG", "D:/beimingkun/image/1593668102711 bg. JPG"); 
}

CodePudding user response:

1 the FTP. StoreFile ("/usr/" + filename, input); Don't need to have a child directory/usr/
2 in the method of parameter is orginfilename write directly, the closing of the InputStream and create together, it is easy to a problem

CodePudding user response:

reference 1st floor tianfang response:

1 FTP. StoreFile ("/usr/" + filename, input); Don't need to have a child directory/usr/
2 in the method of parameter is orginfilename write directly, the closing of the InputStream and create not together, it is easy to a problem

so why always returns false when upload?

CodePudding user response:

refer to the second floor qq245521371 response:

Quote: refer to 1st floor tianfang response:
1 FTP. StoreFile ("/usr/" + filename, input); Don't need to have a child directory/usr/
2 in the method of parameter is orginfilename write directly, the closing of the InputStream and create not together, it is easy to a problem

so why always returns false when upload?

Posted on the complete information

CodePudding user response:

reference tianfang reply: 3/f

1 FTP. StoreFile ("/usr/" + filename, input); Don't need to have a child directory/usr/
2 in the method of parameter is orginfilename write directly, the closing of the InputStream and create together, it is easy to problems

Quote: refer to the second floor qq245521371 response:

Quote: refer to 1st floor tianfang response:
1 FTP. StoreFile ("/usr/" + filename, input); Don't need to have a child directory/usr/
2 in the method of parameter is orginfilename write directly, the closing of the InputStream and create not together, it is easy to a problem

so why always returns false when upload?

Posted on the complete information.

 import org.apache.commons.net.ftp.FTPClient; 
The import org.apache.commons.net.ftp.FTPReply; 

Import the Java. IO. The File; 
Import the Java. IO. FileInputStream; 
Import the Java. IO. IOException; 
Import the Java. IO. InputStream; 

Public class Ftp1 {

/* * 
* * upload a local file to the FTP server 
*/
Public static void upLoadFromProduction (String url,//FTP server hostname 
Int port,//FTP server port 
String username,//FTP login name 
String password,//FTP password 
String path,//FTP server directory 
String filename,//upload file on the FTP server 
String orginfilename//input stream file name 
) {
Try {
FileInputStream in=new FileInputStream (new File (orginfilename)); 
A Boolean flag=uploadFile (url, port, username, password, path, filename, in); 
System. The out. Println (flag); 
} the catch (Exception e) {
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