Java Apache HTTP客户端Post似乎正常工作，但未收到变量

我有以下代码来执行httpclient post请求

    public void upload() throws Exception{

    //HTTP POST Service
    try{
        HttpClient httpclient = HttpClientBuilder.create().build();         
        URI uri = new URIBuilder()
        .setScheme("http")
        .setHost("www.mysite.com")
        .setPath("/mypage.php")
        .setParameter("Username", userID)
        .setParameter("Password", password)
        .build();
        HttpPost httppost = new HttpPost(uri);
        httpclient.execute(httppost);

        BasicHttpContext localContext = new BasicHttpContext();
        HttpResponse response = httpclient.execute(httppost, localContext);
        HttpUriRequest currentReq = (HttpUriRequest) localContext.getAttribute(ExecutionContext.HTTP_REQUEST);
        HttpHost currentHost = (HttpHost)localContext.getAttribute(ExecutionContext.HTTP_TARGET_HOST);
        String currentUrl = currentHost.toURI() + currentReq.getURI();        
        System.out.println(currentUrl);
        System.out.println(response);
        HttpEntity httpEntity = response.getEntity();
        String str = "";
        if (httpEntity != null) {
            str = EntityUtils.toString(httpEntity);
            System.out.println(str);
        }

    }catch (Exception e) {
        e.printStackTrace();
    }
}

返回

HTTP/1.1 200 OK [Date: Sat, 11 Jan 2014 16:17:22 GMT, Server: Apache, Expires: Thu, 19 Nov 1981 08:52:00 GMT, Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0, Pragma: no-cache, Vary: Accept-Encoding, Keep-Alive: timeout=10, max=30, Content-Type: text/html, Via: 1.1 NDC1-B2-CE01, Connection: keep-alive]

好像一切都很好，但另一端的php脚本似乎没有接收到变量

我试过一些简单的方法，比如：

<?php
   error_log($_POST["Username"]);
?>

---

但是得到一个索引未定义的错误打印出来

您正在设置URI的查询参数，它构建了一个URI，就像您的URI一样

您需要使用

NameValuePair

设置HttpPost的参数

HttpPost post = new HttpPost("http://www.mysite.com/mypage.php");
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("Username", userId));
params.add(new BasicNameValuePair("Password", pass));
post.setEntity(new UrlEncodedFormEntity(params));
HttpResponse response = post.execute(post);

HttpPost=新的HttpPost（“http://www.mysite.com/mypage.php");
List params=new ArrayList（）；
添加（新的BasicNameValuePair（“用户名”，userId））；
参数添加（新的BasicNameValuePair（“密码”，pass））；
post.setEntity（新的UrlEncodedFormEntity（params））；
HttpResponse response=post.execute（post）；

---

此外，我建议使用

授权

头处理身份验证，例如通过HTTPS发送凭据。

hmm会给我与以前相同的错误吗？您可以发布一个使用基本身份验证的示例吗？然后您可以检索用户名并使用$\u server['PHP\u AUTH\u USER']和$\u server['PHP\u AUTH\u PW']传递服务器端