Java SFTP Mule库问题：ClassDef未找到

Question

我正在开发一个Java实用程序，它将文件从HDFS获取到远程计算机。我在SFTP库导入中遇到了一些问题。我在POM中包含了org mule传输和相关库，在进行mvn安装后，我可以看到类在依赖路径中可用。但是，当我执行该类时，我收到如下错误消息：

 Exception in thread "main" java.lang.NoClassDefFoundError:      org/mule/transport/sftp/SftpClient
    at xxxx.yyyyyy.sftpFileTransfer.main(sftpFileTransfer.java:17)
    Caused by: java.lang.ClassNotFoundException:      org.mule.transport.sftp.SftpClient
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    ... 1 more


import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.BufferedInputStream;
import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.mule.transport.sftp.SftpClient;
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.ChannelSftp.LsEntry;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.SftpATTRS;
import com.jcraft.jsch.SftpException;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import java.util.Vector;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.mule.transport.sftp.SftpClient;



public class sftpFileTransfer {
public static void main(String[] args) throws IOException {
    System.out.println("This is for testing");
    SftpClient sftpCli = new SftpClient("abcdef");
    sftpCli.login("karthick_kb","/home/karthick/.ssh/id_rsa", null);
    sftpCli.changeWorkingDirectory("/tmp/");
    Configuration conf = new Configuration();
    FileSystem fs = FileSystem.get(conf);
    FSDataInputStream fsdisPath = null;
    String filePath = null;
    filePath = "/a/b/c/d/e/f/1.dat.gz";
    Path inputPath = new Path(filePath);
    fsdisPath = fs.open(inputPath);
    BufferedInputStream bis = new BufferedInputStream(fsdisPath);
    sftpCli.storeFile(inputPath.getName(), bis);
    fsdisPath.close();

}
}

maven依赖关系如下

<dependency>
<groupId>com.jcraft</groupId>
<artifactId>jsch</artifactId>
<version>0.1.54</version>
</dependency>
<dependency>
<groupId>org.mule</groupId>
<artifactId>mule-core</artifactId>
<version>3.4.0</version>
</dependency>
<dependency>
<groupId>org.mule.transports</groupId>
<artifactId>mule-transport-sftp</artifactId>
<version>3.4.0</version>
</dependency> 
</dependencies>

我能够在maven依赖项中看到所需的SFTP类我可能会遗漏什么......任何信息都会很棒