如何使用NameValuePair使用POST向HttpURLConnection添加参数 [英] How to add parameters to HttpURLConnection using POST using NameValuePair

问题描述

我正在尝试 POST 与 HttpURLConnection （我需要以这种方式使用它，不能使用 HttpPost ）我想为该连接添加参数，例如

I am trying to do POST with HttpURLConnection(I need to use it this way, can't use HttpPost) and I'd like to add parameters to that connection such as

post.setEntity(new UrlEncodedFormEntity(nvp));

其中

nvp = new ArrayList<NameValuePair>();

存储了一些数据。我找不到如何添加此<$ c $的方法c> ArrayList 到我的 HttpURLConnection ，这是：

having some data stored in. I can't find a way how to add this ArrayList to my HttpURLConnection which is here:

HttpsURLConnection https = (HttpsURLConnection) url.openConnection();
https.setHostnameVerifier(DO_NOT_VERIFY);
http = https;
http.setRequestMethod("POST");
http.setDoInput(true);
http.setDoOutput(true);

这种尴尬的https和http组合的原因是需要不验证证书。但这不是问题，它可以很好地发布服务器。但是我需要用论据发帖。

The reason for that awkward https and http combination is the need for not verifying the certificate. That is not a problem, though, it posts the server well. But I need it to post with arguments.

任何想法？

重复免责声明：

早在2012年，我不知道参数是如何插入 HTTP POST 请求的。我挂在 NameValuePair 上，因为它在教程中。这个问题可能看似重复，但是，我的2012年自我阅读 其他 问题，不使用 NameValuePair 。事实上，它并没有解决我的问题。

Back in 2012, I had no idea how parameters were inserted into an HTTP POST request. I was hanging on to NameValuePair because it was in a tutorial. This question might seem like a duplicate, however, my 2012 self read that other question and it was NOT using NameValuePair. It did not, in fact, solve my problem.

推荐答案

您可以获取连接的输出流并写入参数查询字符串对它来说。

You can get output stream for the connection and write the parameter query string to it.

URL url = new URL("http://yoururl.com");
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
conn.setReadTimeout(10000);
conn.setConnectTimeout(15000);
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);

List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("firstParam", paramValue1));
params.add(new BasicNameValuePair("secondParam", paramValue2));
params.add(new BasicNameValuePair("thirdParam", paramValue3));

OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(
        new OutputStreamWriter(os, "UTF-8"));
writer.write(getQuery(params));
writer.flush();
writer.close();
os.close();

conn.connect();

...

private String getQuery(List<NameValuePair> params) throws UnsupportedEncodingException
{
    StringBuilder result = new StringBuilder();
    boolean first = true;

    for (NameValuePair pair : params)
    {
        if (first)
            first = false;
        else
            result.append("&");

        result.append(URLEncoder.encode(pair.getName(), "UTF-8"));
        result.append("=");
        result.append(URLEncoder.encode(pair.getValue(), "UTF-8"));
    }

    return result.toString();
}

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