FTPClient storeFile返回false，报550-The process cannot access the file because it is being used by anoth

boolean tag = ftp.storeFile(fileName, in);

返回false，断点进去看replyString：550-The process cannot access the file because it is being used by another process. 
 Win32 error:   The process cannot access the file because it is being used by another process. 
 Error details: File system returned an error.
550 End

意思是线程被占用，

解决方法，在创建FTP线程的时候加锁

				synchronized(ftpClientPool){
					FTPClient ftpClient = ftpClientPool.createClient();
					boolean success =  upLoadFile(ftpClient,pathName,fileName,insComing);
					if(!success){
						System.out.println("imgUrl=" + js.getString("zytest"));
					}
				}

问题解决

顺便说下，storeFile还有中文编码问题，

fileName = new String(fileName.getBytes("UTF-8"),"iso-8859-1");
boolean tag = ftp.storeFile(fileName, in);