Tomcat7.0 Java SFTP 取文件报错

十林 2017-03-10 11:49:34

在Eclipse 中我可以顺利使用下面的代码SFTP下载文件
但是我把函数startFTP整合如我得web 应用代码中，就会出现报错信息“Unknown message with code "Could not determine the type of file。。。”
web 应用是部署在Tomcat 7.0上，使用的是SSH 框架。 web 应用有个定时器，定时运行函数去SFTP上取文件。
系统 win10
JDK 1.8
网络连接没有问题。
麻烦大神了！
系统输出信息如下
initial FileSystemManager successful
start download
initial SftpFileSystemConfigBuilder successful
manager.resolveFile localFile successful
Unknown message with code "Could not determine the type of file "sftp://username:***@192.168.64.37/FILE_20170308.CSV".".



import java.io.File;

import java.io.FileInputStream;

import java.util.Properties;



import org.apache.commons.vfs2.FileObject;

import org.apache.commons.vfs2.FileSystemOptions;

import org.apache.commons.vfs2.Selectors;

import org.apache.commons.vfs2.impl.*;

import org.apache.commons.vfs2.provider.local.DefaultLocalFileProvider;

import org.apache.commons.vfs2.provider.sftp.SftpFileSystemConfigBuilder;



import com.jcraft.jsch.*;

public class SFTPTest {



public static void main(String[] args) {

		 

        startFTP("192.168.64.37","username","1234","/","C:/Temp/", "FILE_20170308.CSV");

	}

public static boolean startFTP(String serverAddress,String userId,String password,String remoteDirectory ,String localDirectory, String fileToDownload){



	StandardFileSystemManager manager = new StandardFileSystemManager();



	try {		



		//Initializes the file manager

		manager.init();



		//Setup our SFTP configuration

		FileSystemOptions opts = new FileSystemOptions();

		SftpFileSystemConfigBuilder.getInstance().setStrictHostKeyChecking(opts, "no");

		SftpFileSystemConfigBuilder.getInstance().setUserDirIsRoot(opts, true);

		SftpFileSystemConfigBuilder.getInstance().setTimeout(opts, 10000);



		//Create the SFTP URI using the host name, userid, password,  remote path and file name

		String sftpUri = "sftp://" + userId + ":" + password +  "@" + serverAddress + "/" + 

		 remoteDirectory + fileToDownload;



		// Create local file object

		String filepath = localDirectory +  fileToDownload;

		File file = new File(filepath);

		FileObject localFile = manager.resolveFile(file.getAbsolutePath());

		System.out.println("manager.resolveFile localFile successful");



		// Create remote file object

		FileObject remoteFile = manager.resolveFile(sftpUri, opts);

		System.out.println("manager.resolveFile remoteFile successful");



		// Copy local file to sftp server

		localFile.copyFrom(remoteFile, Selectors.SELECT_SELF);

		System.out.println("File download successful");



	}

	catch (Exception ex) {

		ex.printStackTrace();

		return false;

	}

	finally {

		manager.close();

	}



		return true;

	}

}