SFTP Java-管道关闭Jsch异常

2022-03-01 00:00:00 sftp authentication java jsch mule

我正在开发一种将文件从一个位置复制到另一个远程位置的Java方法。我的代码如下所示。我尝试使用jsch 0.1.42&;0.1.50&;0.1.54

      public static void processFiles(ArrayList<String> FilesToBeCopied, String destFilePath) throws IOException {
        SftpClient client = new SftpClient("karthick");
        String keyFilePath = "/ab/c/d/id_rsa";
        String sftpUser = "karthickkb";
        client.login(sftpUser, keyFilePath, null);
        client.changeWorkingDirectory(destFilePath);
        Configuration conf = new Configuration();
        FileSystem fs = FileSystem.get(conf);
        FSDataInputStream fsdisPath = null;
        String filePath = null;
        for (String sourcefilePath : FilesToBeCopied) {
            try {
                filePath = sourcefilePath;
                Path inputPath = new Path(filePath);
                fsdisPath = fs.open(inputPath);
                BufferedInputStream bis = new BufferedInputStream(fsdisPath);
                client.storeFile(inputPath.getName(), bis);
                fsdisPath.close();
                fsdisPath = null;
            } catch (Exception ex) {
                ex.printStackTrace();
            } finally {
                try {
                    if (client != null) {
                        client.disconnect();


        }
                if (fsdisPath != null) {
                    fsdisPath.close();
                }
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
    }

}

}
我使用Jsch 0.1.42时的错误代码是 使用jsch 0.1.42时收到以下错误代码。

     java.io.IOException: java.io.IOException: Pipe closed
    at org.mule.transport.sftp.SftpClient.storeFile(SftpClient.java:390)
    at karthickArchive.archiveMigration.sftpFileUtil.processFiles(sftpFileUtil.java:58)
    at karthickArchive.archiveMigration.getFileUtility.main  (getFileUtility.java:69)

     17/08/14 07:06:41 ERROR sftp.SftpClient: Error writing data over SFTP service, error was: java.io.IOException: Pipe closed
    4: java.io.IOException: Pipe closed
    at com.jcraft.jsch.ChannelSftp._put(ChannelSftp.java:578)
    at com.jcraft.jsch.ChannelSftp.put(ChannelSftp.java:439)
    at com.jcraft.jsch.ChannelSftp.put(ChannelSftp.java:406)
    at org.mule.transport.sftp.SftpClient.storeFile(SftpClient.java:385)
    at karthickArchive.archiveMigration.sftpFileUtil.processFiles(sftpFileUtil.java:58)
    at karthickArchive.archiveMigration.getFileUtility.main(getFileUtility.java:69)
    Caused by: java.io.IOException: Pipe closed
    at java.io.PipedInputStream.read(PipedInputStream.java:308)
    at java.io.PipedInputStream.read(PipedInputStream.java:378)
    at com.jcraft.jsch.ChannelSftp.fill(ChannelSftp.java:2325)
    at com.jcraft.jsch.ChannelSftp.header(ChannelSftp.java:2351)
    at com.jcraft.jsch.ChannelSftp._put(ChannelSftp.java:474)
    ... 5 mor

当我使用jsch 0.1.50时,错误如下

Exception in thread "main" java.lang.NoSuchFieldError: identities
    at com.jcraft.jsch.UserAuthPublicKey.start(UserAuthPublicKey.java:39)
    at com.jcraft.jsch.Session.connect(Session.java:463)
    at com.jcraft.jsch.Session.connect(Session.java:183)

我尝试了足够多的探索,但我无法为我的问题找到明确的答案,我想我遗漏了一些东西。任何建议都将不胜感激。

使用jsch 0.1.50时维护依赖关系树

 [INFO] Scanning for projects...
 [INFO]                                                                         
 [INFO] ------------------------------------------------------------------------
 [INFO] Building archiveMigration 0.0.1-SNAPSHOT
 [INFO] ------------------------------------------------------------------------
 [INFO] 
 [INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ archiveMigration ---
 [INFO] tdiArchive:archiveMigration:jar:0.0.1-SNAPSHOT
 [INFO] +- org.apache.hadoop:hadoop-hdfs:jar:2.5.0-cdh5.3.2:compile
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 [INFO] |  +- org.codehaus.jackson:jackson-core-asl:jar:1.8.8:compile
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 [INFO] |  +- org.apache.curator:curator-client:jar:2.6.0:compile
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 [INFO] |  - org.apache.commons:commons-compress:jar:1.4.1:compile
 [INFO] |     - org.tukaani:xz:jar:1.0:compile
 [INFO] +- org.mule.transports:mule-transport-sftp:jar:3.4.0:compile
 [INFO] |  +- (com.jcraft:jsch:jar:0.1.44-1:compile - omitted for conflict with 0.1.42)
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 [INFO] +- org.mule.transports:mule-transport-file:jar:3.4.0:compile
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 [INFO] |        - jdom:jdom:jar:1.0:compile
 [INFO] - com.jcraft:jsch:jar:0.1.50:compile
 [INFO] -------------------------------------------------------------------- 
 [INFO] BUILD SUCCESS
 [INFO] -------------------------------------------------------------------- 
 [INFO] Total time: 7.989 s
 [INFO] Finished at: 2017-08-14T18:02:29+05:30
 [INFO] Final Memory: 18M/356M
 [INFO] --------------------------------------------------------------------      ----

删除所有其他JSCH库之后,下面是我的maven,除了0.1.50

之外,我没有看到任何其他JSCH库

我仍然在行中出现错误

client.login(sftpUser,keyFilePath,null);

 Actual Log:Exception in thread "main" java.lang.NoSuchFieldError: identities
    at com.jcraft.jsch.UserAuthPublicKey.start(UserAuthPublicKey.java:39)
    at com.jcraft.jsch.Session.connect(Session.java:463)
    at com.jcraft.jsch.Session.connect(Session.java:183)
    at org.mule.transport.sftp.SftpClient.login(SftpClient.java:178)
    at karthickArchive.archiveMigration.sftpFileUtil.processFiles(sftpFileUtil.java:46)
    at karthickArchive.archiveMigration.getFileUtility.main(getFileUtility.java:69)

解决方案

再次查看您的代码(就在我喝完咖啡之后,这样更好),java.io.IOException: Pipe closed使用JSCH 0.1.42实际上是由您建议的逻辑问题引起的:

您的最终挡路在您的for循环中。作为最后一个挡路,无论是否发生异常,您的客户端总是在第一次迭代结束时被最后一个挡路断开连接:

for(...){
    try{
        ...
    }catch(...){
        ...
    }finally{
        # this finally block is inside your for loop
        # finally block is always called whether an exception occur or not
        # on the first iteration, this is called and close your client
        try{
            if(client!=null){
                # nope, it will close the client for next iteration!
                client.disconnect();
            }if(fsdisPath!=null){
                # good to close this however
                fsdisPath.close();
            }
        }catch(Exceptionex){
            ex.printStackTrace();
        }
    }
}

相反,您应该拥有如下内容:

try {
    for(...){
        try{
            ...
        }catch(...){
            ...
        }finally{
            try{
                if(fsdisPath!=null){
                    fsdisPath.close();
                }
            }catch(Exceptionex){
                ex.printStackTrace();
            }
        }
    }
} finally {
    if(client!=null){
        client.disconnect();
    }
}

将for循环作为代码可见性的函数也可能是个好主意;)

java.lang.NoSuchFieldError: identities是由应用程序的另一部分使用不同的JSch版本引起的,因为您根据Maven依赖关系树进行了验证。

在项目(使用jsch 0.1.50)中执行了mvn依赖:tree-dVerose,我发现项目和我已经添加了原始帖子中的所有日志:特别是这个:+-org.mule.transports:mule-transport-sftp:jar:3.4.0:compile[信息]|+-(com.jcraft:jsch:jar:0.1.44-1:COMPILE-由于与0.1.42冲突而省略)+-(com.jcraft:JSCH:JAR:0.1.42:COMPILE-因与0.1.50冲突而省略)[信息]-com.jcraft:jsch:jar:0.1.50:编译[信息]

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