Java - 发送POST

Question

我正在尝试让java为url shortener添加一个新功能，这就是我所拥有的：

private void sendPost() throws Exception {

    String url = "http://shmkane.com/index.php?";
    URL obj = new URL(url);
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();

    con.setRequestMethod("POST");
    con.setRequestProperty("User-Agent", USER_AGENT);
    con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");

    String urlParameters = "url=testingThis";

    con.setDoOutput(true);
    DataOutputStream wr = new DataOutputStream(con.getOutputStream());
    wr.writeBytes(urlParameters);
    wr.flush();
    wr.close();

    int responseCode = con.getResponseCode();
    System.out.println("\nSending 'POST' request to URL : " + url);
    System.out.println("Post parameters : " + urlParameters);
    System.out.println("Response Code : " + responseCode);

    BufferedReader in = new BufferedReader(
            new InputStreamReader(con.getInputStream()));
    String inputLine;
    StringBuffer response = new StringBuffer();

    while ((inputLine = in.readLine()) != null) {
        response.append(inputLine);
    }
    in.close();

    System.out.println(response.toString());

}

我想把它放在“form1”中，然后“提交” here's the site

我对此非常陌生，所以任何帮助都会很棒，可能会告诉我我做错了什么或改进/修复我目前的代码。

Answer 1

该网站不支持发布：

<form method="get" id="form1" action="index.php">
    <p>&nbsp;</p>
    <p><br>
      <input class="textBox" id="url" placeholder="Paste a link to shorten it" type="text" name="url" value="">
    </p>
    <p>
      <input class="textBox" placeholder="Custom alias" id="alias" maxlength="15" type="text" name="alias" value="">
    </p>
    <div class="button">
      <p>
        <input class="button" type="submit" value="Shorten">
      </p>
<br>
      <div class="alert-box success">
        <center>
          <a href="" target="_blank"></a>
        </center>
      </div>
      <em>May only contain letters, numbers, dashes and underscores.</em>
      <p></p>
    </div>
  </form>

注意方法是GET。改为：

 String urlParameters = "url=testingThis";
 String url = "http://shmkane.com/index.php?";
 URL obj = new URL(url + urlParameters);
 HttpURLConnection con = (HttpURLConnection) obj.openConnection();

 con.setRequestMethod("GET");

摆脱对输出流的写入。