使用 ganymed-ssh2 将 java scp 文件发送到远程

Question

我遇到了需要解决的情况。我必须上传 xml 文件的特定元素才能将其上传到服务器，我设法做到了这一点，并且我创建了一个演示方法来检查文件是否正在上传到服务器。

我的 xml 文件具有以下结构，

<config>
 <engine>
    <eid>1</eid>
    <sometextelement>text</sometextelement>
 </engine>

 <engine>
    <eid>2</eid>
    <sometextelement>text</sometextelement>
 </engine>

 <engine>
    <eid>3</eid>
    <sometextelement>text</sometextelement>
 </engine>


</config>

这是我的 servlet 代码:

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doPost(request,response);
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        response.setContentType("application/json");
        //response.setHeader("Cache-Control", "no-cache");
         PrintWriter out = response.getWriter();
         JSONObject obj = new JSONObject();
         String value = request.getParameter("value");
            String message = "";
            String update = "";
            Element element = null;
            Element root = null;
            XMLOutputter xmlOutputter = new XMLOutputter();
        try{
        doc = saxBuilder.build("E:/workbench j2ee/cPEP_UI/WebContent/engine.xml");
    
        }catch(Exception e){
            e.printStackTrace();
        }
        root = doc.getRootElement();
        List list = doc.getRootElement().getChildren();
        Iterator itr = list.iterator();
        while(itr.hasNext()){
             element = (Element)itr.next();
            System.out.println("Entered 1");
          File f = File.createTempFile("engine_",".xml");
           System.out.println(f);
            xmlOutputter.output(element, new FileWriter(f));
            
            putFile(f);
        }
        
        
          
         // xmlOutputter.output(doc, new FileWriter("E:/workbench j2ee/cPEP_UI/WebContent/engine.xml"));
        
        
        
         
         
        // System.out.println("hello from system");
        // out.println("hello");
        
        
         
    }
    
    public void putFile(File f){
         System.out.println("File String: "+f.toString());
         Connection Conn = null;
          try {
           Conn = new Connection("ftp.someserver.co.uk",22);
           ConnectionInfo info = Conn.connect();
           Conn.authenticateWithPassword("webmaster@someserver.co.uk", "mypass");
           SCPClient SCP = new SCPClient(Conn);
           SCP.put(f.toString(), "/public_html/webmaster", "0755");
           Conn.close();
          } catch (Exception e) {
           try {
            Conn.close();
           } catch (Exception e1) {}
    }
    }

现在，从上面的代码中，我正在为引擎 1、引擎 2 和引擎 3 创建文件，这就是我想要的，但现在我也希望它上传到服务器。并且 putFile 代码根本不起作用。也没有显示错误，密码和用户名都很好，服务器名称也很好。港口也很完美。那怎么了？有什么想法吗？

编辑 - 1

错误如下:

java.io.IOException: There was a problem while connecting to ftp.someserver.co.uk:22
    at ch.ethz.ssh2.Connection.connect(Connection.java:699)
    at ch.ethz.ssh2.Connection.connect(Connection.java:490)
    at Push_Individual_Engine.putFile(Push_Individual_Engine.java:106)
    at Push_Individual_Engine.doPost(Push_Individual_Engine.java:81)
    at Push_Individual_Engine.doGet(Push_Individual_Engine.java:47)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Thread.java:662)
Caused by: java.net.ConnectException: Connection timed out: connect
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
    at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
    at java.net.Socket.connect(Socket.java:529)
    at ch.ethz.ssh2.transport.TransportManager.establishConnection(TransportManager.java:340)
    at ch.ethz.ssh2.transport.TransportManager.initialize(TransportManager.java:448)
    at ch.ethz.ssh2.Connection.connect(Connection.java:643)
    ... 18 more

Answer 1

您需要在远程计算机的sshd_config文件中设置PasswordAuthentication = yes。