ftp上一个文件直接使用浏览器是可以访问下载的,使用FtpClient下载ftp的文件的时候,有一个文件下载不下来,ftp返回的信息是:
425 Failed to establish connection
其他各项信息是(供参考):
getLocalAddress:/159.226.194.17
getControlEncoding:ISO-8859-1
getDataConnectionMode:2
getDefaultPort:21
getDefaultTimeout:0
getLocalPort:64844
getPassiveHost:null
getPassivePort:-1
getRemotePort:21
getReplyString:230 Login successful.
getSystemName:UNIX Type: L8
getStatus:211-FTP server status:
Connected to 192.168.1.22
Logged in as ftp
TYPE: ASCII
No session bandwidth limit
Session timeout in seconds is 600
Control connection is plain text
Data connections will be plain text
At session startup, client count was 1
vsFTPd 3.0.2 - secure, fast, stable
211 End of status
解决方法如下:
在创建连接的时候,启用被动模式,如下:
ftpClient.enterLocalPassiveMode();