我正在從一個Apache庫(commons.net ver 3.2)的幫助下從服務器上下載ftp文件。下載很好,我收到了我需要的所有文件並將它們保存在一個文件夾中。我遇到的問題是超時,因爲當我下載時連接中斷,我需要一個錯誤消息,告訴我連接已經丟失,但是我發現這樣做有困難,我搜索了無數的論壇,包括這個一個和我已經嘗試了很多方法來解決這個問題,但沒有人有結果呢!那我的代碼如下:apache commons ftp客戶端超時問題
public void doSomething(String ip, int port, String user, String pass, String server, String remotePath, String localPath) {
int tenseconds = 10 * 1000;
int thirtyseconds = 30 * 3000;
Socket s4 = new Socket();
java.net.InetSocketAddress adr = new java.net.InetSocketAddress("213.0.17.234", 21);
s4.connect(adr, thirtyseconds);
FTPClient client = new FTPClient();
org.apache.commons.vfs2.FileSystemOptions fileSystemOptions = null;
String key = FtpFileSystemConfigBuilder.getInstance().getEntryParser(fileSystemOptions);
try {
client.setConnectTimeout(tenseconds);
client.setDefaultTimeout(thirtyseconds);
client.connect(ip, port);
client.setSoTimeout(thirtyseconds);
int reply = client.getReplyCode();
if (!FTPReply.isPositiveCompletion(reply)) {
throw new FileSystemException("vfs.provider.ftp/connect-rejected.error");
}
client.enterLocalPassiveMode();
boolean login = client.login(user, pass);
URL url = new URL("ftp://" + user + ":" + pass + "@" + server + remotePath + ";type=i");
URLConnection urlc = url.openConnection();
urlc.setConnectTimeout(1000);
InputStream is = urlc.getInputStream();
BufferedWriter bw = new BufferedWriter(new FileWriter(localPath));
int c;
client.setSoTimeout(tenseconds);
client.setControlKeepAliveTimeout(10000);
while ((c = is.read()) != -1) {
urlc.getConnectTimeout();
bw.write(c);
}
long t2 = System.currentTimeMillis();
System.out.println(t2);
JOptionPane.showMessageDialog(null, "se cargo el primer fichero!", "información", JOptionPane.INFORMATION_MESSAGE);
if (login) {
FTPFile[] files = client.listFiles();
for (FTPFile file : files) {
if (file.getType() == FTPFile.DIRECTORY_TYPE) {
System.out.println("ftp file: " + file.getName() + ";" + FileUtils.byteCountToDisplaySize(file.getSize()));
} else if (file.getType() == FTPFile.FILE_TYPE) {
System.out.println("ftp file: " + file.getName() + ";" + FileUtils.byteCountToDisplaySize(file.getSize()));
}
}
is.close();
bw.close();
client.setSoTimeout(tenseconds);
client.logout();
client.disconnect();
}
} catch (IOException e) {
StringWriter sw0 = new StringWriter();
PrintWriter p0 = new PrintWriter(sw0, true);
e.printStackTrace(p0);
System.out.println("connection probably lost");
JOptionPane.showMessageDialog(null, "Error: " + e.getMessage(), "Error", JOptionPane.ERROR_MESSAGE);
}
}
我已經嘗試了所有的東西可以找到一個已經閱讀了setdefaulttimeout用來激活所有的超時,connectiontiomeout來等待連接和getsotimeouts使用當我們下載一個文件但它不起作用時,我已經嘗試了5秒鐘,所以它不會下載文件,但它不起作用,我已經讀過,有一些問題whit connectiontimeouts,我們應該使用socketfactory,所以我也修了一個套接字工廠,我嘗試了,但它不起作用,而且我已經達到了一點,我有點絕望,所以我要求你的幫助,我都嘗試client.setControlKeepAliveTimeout(10000);
建立一個活動超時但它沒有工作! :(
'setControlKeepAliveTimeout'的參數以秒爲單位。 – 2013-07-18 15:04:13