如何将字符串发送到Http服务器（Java） [英] How To Send a String to a Http Server (Java)

问题描述

我有一个简单的http服务器，我需要在 Stream 上发送 String 。但是，String包含空格，我知道如何在 Stream 上从客户端编写它。如何在服务器一侧收到它？

I have a simple http server and I need to send a String over a Stream. However, the String contains spaces and I know how to write it from client on the Stream. How can I receive it on the Server side?

static class InsertPostHandler implements HttpHandler {
  public void handle(final HttpExchange HE) throws IOException {
    Thread thread =  new Thread(new Runnable() {
        final HttpExchange t = HE;
            @Override
            public void run() {
              Statement stmt = null;
              // add the required response header for a PDF file
              String Request =(t.getRequestURI().toString()
                  .split("\\/@@postssystem/"))[1];
              System.out.println(Request);
              if(Request.equals("createpost")){
                Headers h = t.getResponseHeaders();
                h.add("Content-Type", "Image");
                h.add("Cache-Control","must-revalidate");
                //Here I Need To Receive A String
                try {
                  t.sendResponseHeaders(200,1);
                } catch (IOException e) {
                  e.printStackTrace();
                }

推荐答案

您可以尝试以下代码：

You can try following code:

    try {
        String toSend = "message";
        String urlParameters = "message=" + toSend;
        String request = "http://IP:PORT/Project/message.html";
        URL url = new URL(request);

        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoOutput(true);
        connection.setDoInput(true);
        connection.setInstanceFollowRedirects(false);
        connection.setRequestMethod("POST");
        connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
        connection.setRequestProperty("charset", "utf-8");
        connection.setRequestProperty("Content-Length","" + Integer.toString(urlParameters.getBytes().length));
        connection.setUseCaches(false);

        DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
        wr.writeBytes(urlParameters);

        int code = connection.getResponseCode();
        System.out.println(code);
        wr.flush();
        wr.close();
        connection.disconnect();
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

您可以指定 IP 和端口您的服务器。并且可以将任何数据作为参数发送。

You can specify IP and port of your server. And can send any data as a parameter.

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