連接後，遍歷文件夾，打開其中一個文件報找不到文件路徑，不知為何，待解

SshClient client=new SshClient();
        try{
            ConsoleKnownHostsKeyVerification console = new ConsoleKnownHostsKeyVerification();  
            client.connect("47.110.70.236",22,console);
            //設置用戶名和密碼
            PasswordAuthenticationClient pwd = new
 
 PasswordAuthenticationClient();
            pwd.setUsername("transnftp");
            pwd.setPassword("tqhy@2019");
            int result=client.authenticate(pwd);
            
     
            
            if(result==AuthenticationProtocolState.COMPLETE){//如果連接完成
                //源文件地址OriginPath
                String OriginPath="/upload";
                List
 
<SftpFile> list = client.openSftpClient().ls(OriginPath);
                
                int filecount=0;
                for(SftpFile f:list) {        
                    //三個跨境電商
                    String eCommercePath=f.getAbsolutePath();
                    List<SftpFile> eCommercelist = client.openSftpClient().ls(eCommercePath);
                    
                    
 
for(SftpFile ff:eCommercelist) {
                        //取json結尾文件
                        //0bd4f4c81cc6a16e9a746f756ba52c9f.json
                        if(ff.getFilename().endsWith(".json")) {
                            
                            SessionChannelClient session = client.openSessionChannel();
                            if(session.startShell()) {
                                BufferedReader in = new BufferedReader(new InputStreamReader(session.getInputStream()));
                                System.out.println("名稱長度："+ff.getFilename());
                                System.out.println("地址："+ff.getAbsolutePath());
                                System.out.println(in.readLine());
                                
                            }
                            
                            filecount++;
                            break;
                            
                        }
                        
                    }
                }
                System.out.println("文件數為："+filecount);
                
           }
        }catch(IOException e){
            e.printStackTrace();
        }

java-疑問-遠程連接linux服務器找不到文件路徑