使用Java编辑JSON文件，该文件位于远程位置：SSH可用

Question

I have a JSON file in my linux box (remote). I am using org.json.simple.* library. I would like to just update one of the attributes and write it back. In JSON file, I know there is one key with "XXXX" and its value is "YYYY". I want to update its value to "WWWWXYZ".

Below is code snippet on what is done so far

Channel channel = session.openChannel("sftp");
channel.connect();
ChannelSftp sftp = (ChannelSftp) channel;

InputStream stream = sftp.get(<JSON FILE LOCATION>);
try {
    JSONParser jsonParser = new JSONParser();

    try {

        JSONObject jsonObject = (JSONObject)jsonParser.parse(
            new InputStreamReader(stream, "UTF-8")
        );

        System.out.println(jsonObject.toJSONString());

        jsonObject.put("XXXX", "WWWWXYZ");
        System.out.println(jsonObject.toJSONString());

    } catch (ParseException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

If you see, I was able to get the JSON file using SSH and then converted that to JSON Object, edited the JSON object. Now I would like to write back it to the actual file in linux box. Please help on how to write back my JSONObject to file, which is located at remote location (my linux box).

Answer 1

如果我正确理解，则应将json对象写入（可选的新）本地文件（请参阅此处的示例 ），然后使用ChannelSftp put方法将远程文件替换为更新的版本。

Answer 2

If you are referring to putting file back to remote server then following code can help you. You can save modified JSON to one file in your local machine and then transfer that file to remote machine..

  channel = session.openChannel("sftp");
        channel.connect();            
        channelSftp = (ChannelSftp) channel;
        channelSftp.cd(SFTPWORKINGDIR);
        File f = new File(filename);
        channelSftp.put(new FileInputStream(f), f.getName());