post - Apache HTTP 客户端，POST 请求。如何正确设置请求参数？

Question

我正在使用 Apache HTTP 客户端，我需要向我的 servlet 发送一个 POST 请求。
发送请求时，我的 servlet 没有收到任何参数(在 HttpServletRequest 中)。

这是客户端程序代码:

// Engage the HTTP client
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpResponse response;
try {
    HttpPost httpPost = new HttpPost("http://localhost:8080/test-json-web/JSONReceiverServlet");

    // Setup the request parameters
    HttpParams params = new BasicHttpParams();
    params.setParameter("taskdef", task1JsonString);
    httpPost.setParams(params);

    // Make the request
    response = httpclient.execute(httpPost);

    HttpEntity responseEntity = response.getEntity();

    System.out.println("----------------------------------------");
    System.out.println(response.getStatusLine());
    if(responseEntity != null) {
        System.out.println("Response content length: " + responseEntity.getContentLength());
    }

    String jsonResultString = EntityUtils.toString(responseEntity);
    EntityUtils.consume(responseEntity);
    System.out.println("----------------------------------------");
    System.out.println("result:");
    System.out.println();
} catch (ClientProtocolException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
} finally {
    httpclient.getConnectionManager().shutdown();
}

如何正确设置 POST 请求参数以便 servlet 实际接收它们？

Answer 1

尝试这个:

        List <NameValuePair> nvps = new ArrayList <NameValuePair>();
        nvps.add(new BasicNameValuePair("IDToken1", "username"));
        nvps.add(new BasicNameValuePair("IDToken2", "password"));

        httPost.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8));