Question

Apache下的FTP上传文件，使用FTPClient的appendFileStream方法返回输出流为空？望高手指点。急！！！！

望高手指点。拜谢！

/**
* 上传文件到服务器,新上传和断点续传
* @param remoteFile 远程文件名，在上传之前已经将服务器工作目录做了改变
* @param localFile 本地文件File句柄，绝对路径
* @param processStep 需要显示的处理进度步进值
* @param ftpClient FTPClient引用
* @return
* @throws IOException
*/
public uploadStatu uploadFile(String remoteFile,File localFile,FTPClient ftpClient,long remoteSize) throws IOException{
uploadStatu status;
//显示进度的上传
long step = localFile.length() / 100;

long process = 0;
long localreadbytes = 0L;
System.out.println("localFile本地文件绝对路径："+localFile);
RandomAccessFile raf = new RandomAccessFile(localFile,"r");
///输出流out为空，无法获取。。。。
OutputStream out = ftpClient.appendFileStream(new String(remoteFile.getBytes("GBK"),"utf-8"));
//断点续传
if(remoteSize>0){
ftpClient.setRestartOffset(remoteSize);
process = remoteSize /step;
raf.seek(remoteSize);
System.out.println("进入断点续床。。。。。。。。。");
localreadbytes = remoteSize;
}
System.out.println("没有进入断点续床。。。。。。。。。");
byte[] bytes = new byte[1024];
// System.out.println("每次读入字节："+bytes.length);
int c;
while((c = raf.read(bytes))!= -1){
System.out.println("每次读入字节："+c);
System.out.println("输出流："+out);
out.write(bytes,0,c);
localreadbytes+=c;
if(localreadbytes / step != process){
process = localreadbytes / step;
System.out.println("上传进度:" + process);
//TODO 汇报上传状态
}
}
out.flush();
raf.close();
out.close();
boolean result =ftpClient.completePendingCommand();
if(remoteSize > 0){
status = result?uploadStatu.Upload_From_Break_Success:uploadStatu.Upload_From_Break_Failed;
}else {
status = result?uploadStatu.Upload_New_File_Success:uploadStatu.Upload_New_File_Failed;
}
return status;
}

Answer 1

ftp服务器的问题，建议：
更换ftp服务器
调整ftp用户操作权限；权限可能不够

Answer 2

ftpClient.enterLocalPassiveMode(); 将这句去掉

Answer 3

你好,你的这个问题解决了吗?我也遇到, out.write(bytes, 0, c); out = ftpClient.appendFileStream(new String(remoteFile.getBytes("GBK"), "iso-8859-1"));out 报空,求指点,谢谢.