Question

我们正在开发通用自动化应用程序，它将从SFTP服务器下载* .pgp文件。该应用程序可以正常使用* .txt文件。但是当我们尝试提取* .pgp文件时，我们得到了以下异常。

2016-03-18 17:45:45 INFO  jsch:52 - SSH_MSG_SERVICE_REQUEST sent
2016-03-18 17:45:46 INFO  jsch:52 - SSH_MSG_SERVICE_ACCEPT received
2016-03-18 17:45:46 INFO  jsch:52 - Next authentication method: publickey
2016-03-18 17:45:48 INFO  jsch:52 - Authentication succeeded (publickey).
sftpSession org.springframework.integration.sftp.session.SftpSession@37831f
files size158
java.io.IOException: inputstream is closed
at com.jcraft.jsch.ChannelSftp.fill(ChannelSftp.java:2884)
at com.jcraft.jsch.ChannelSftp.header(ChannelSftp.java:2908)
at com.jcraft.jsch.ChannelSftp.access$500(ChannelSftp.java:36)
at com.jcraft.jsch.ChannelSftp$2.read(ChannelSftp.java:1390)
at com.jcraft.jsch.ChannelSftp$2.read(ChannelSftp.java:1340)
at org.springframework.util.StreamUtils.copy(StreamUtils.java:126)
at org.springframework.util.FileCopyUtils.copy(FileCopyUtils.java:109)
at     org.springframework.integration.sftp.session.SftpSession.read(SftpSession.java:129)
at com.sftp.test.SFTPTest.main(SFTPTest.java:49)

java代码：

public class SFTPTest {

public static void main(String[] args) {
    ApplicationContext applicationContext = new ClassPathXmlApplicationContext("beans.xml");
    DefaultSftpSessionFactory defaultSftpSessionFactory = applicationContext.getBean("defaultSftpSessionFactory", DefaultSftpSessionFactory.class);
    System.out.println(defaultSftpSessionFactory);
    SftpSession sftpSession = defaultSftpSessionFactory.getSession();
    System.out.println("sftpSessikon "+sftpSession);
    String remoteDirectory = "/";
    String localDirectory = "C:/312421/temp/";
    OutputStream outputStream = null;
    List<String> fileAtSFTPList = new ArrayList<String>();
    try {
        String[] fileNames = sftpSession.listNames(remoteDirectory);
        for (String fileName : fileNames) {
            boolean isMatch = fileCheckingAtSFTPWithPattern(fileName);
            if(isMatch){
                fileAtSFTPList.add(fileName);
            }
        }
        System.out.println("files size" + fileAtSFTPList.size());
        for (String fileName : fileAtSFTPList) {
            File file = new File(localDirectory + fileName);

            /*InputStream ipstream= sftpSession.readRaw(fileName);
            FileUtils.writeByteArrayToFile(file, IOUtils.toByteArray(ipstream));
            ipstream.close();*/

            outputStream = new FileOutputStream(file);
             sftpSession.read(remoteDirectory + fileName, outputStream);
            outputStream.close();
        } 
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();

    }finally {
        try {
            if (outputStream != null)
                outputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }




}


public static boolean fileCheckingAtSFTPWithPattern(String fileName){
    Pattern pattern = Pattern.compile(".*\\.pgp$");
    Matcher matcher = pattern.matcher(fileName);
    if(matcher.find()){
        return true;
    }
    return false;
}

}

请建议如何解决此问题。感谢

Answer 1

文件类型与Spring Integration无关 - 看起来服务器正在读取前导码时关闭连接 - 在获取数据之前......

at com.jcraft.jsch.ChannelSftp.header(ChannelSftp.java:2908)
at com.jcraft.jsch.ChannelSftp.access$500(ChannelSftp.java:36)
at com.jcraft.jsch.ChannelSftp$2.read(ChannelSftp.java:1390)
at com.jcraft.jsch.ChannelSftp$2.read(ChannelSftp.java:1340)

直到稍后才会读取数据本身（ChannelSftp中的第1442行）。

所以它看起来像服务器端问题。

如何使用SFTP spring Integration传输* .pgp文件

1 个答案: