Android、Java:HTTP POST 请求 [英] Android, Java: HTTP POST Request

问题描述

我必须向 Web 服务发出 http post 请求，以使用用户名和密码对用户进行身份验证.Web 服务人员给了我以下信息来构建 HTTP Post 请求.

I have to do a http post request to a web-service for authenticating the user with username and password. The Web-service guy gave me following information to construct HTTP Post request.

POST /login/dologin HTTP/1.1
Host: webservice.companyname.com
Content-Type: application/x-www-form-urlencoded
Content-Length: 48

id=username&num=password&remember=on&output=xml

我将得到的 XML 响应是

The XML Response that i will be getting is

<?xml version="1.0" encoding="ISO-8859-1"?>
<login>
 <message><![CDATA[]]></message>
 <status><![CDATA[true]]></status>
 <Rlo><![CDATA[Username]]></Rlo>
 <Rsc><![CDATA[9L99PK1KGKSkfMbcsxvkF0S0UoldJ0SU]]></Rsc>
 <Rm><![CDATA[b59031b85bb127661105765722cd3531==AO1YjN5QDM5ITM]]></Rm>
 <Rl><![CDATA[[e-mail]]]></Rl>
 <uid><![CDATA[3539145]]></uid>
 <Rmu><![CDATA[f8e8917f7964d4cc7c4c4226f060e3ea]]></Rmu>
</login>

这就是我正在做的 HttpPost postRequest = new HttpPost(urlString);我如何构造其余的参数?

This is what i am doing HttpPost postRequest = new HttpPost(urlString); How do i construct the rest of the parameters?

推荐答案

这是之前在 androidsnippets.com(该网站目前不再维护).

Here's an example previously found at androidsnippets.com (the site is currently not maintained anymore).

// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.yoursite.com/script.php");

try {
    // Add your data
    List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
    nameValuePairs.add(new BasicNameValuePair("id", "12345"));
    nameValuePairs.add(new BasicNameValuePair("stringdata", "AndDev is Cool!"));
    httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

    // Execute HTTP Post Request
    HttpResponse response = httpclient.execute(httppost);

} catch (ClientProtocolException e) {
    // TODO Auto-generated catch block
} catch (IOException e) {
    // TODO Auto-generated catch block
}

因此，您可以将参数添加为 BasicNameValuePair.

So, you can add your parameters as BasicNameValuePair.

另一种方法是使用 (Http)URLConnection.另请参阅使用 java.net.URLConnection触发和处理 HTTP 请求.这实际上是较新的 Android 版本 (Gingerbread+) 中的首选方法.另请参阅此博客，此开发人员文档 和 Android 的 HttpURLConnection javadoc.

An alternative is to use (Http)URLConnection. See also Using java.net.URLConnection to fire and handle HTTP requests. This is actually the preferred method in newer Android versions (Gingerbread+). See also this blog, this developer doc and Android's HttpURLConnection javadoc.

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