我必须向网络服务发出http发布请求,以使用用户名和密码对用户进行身份验证。Web服务人员向我提供了以下信息,以构造HTTP Post请求。
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
<?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[username@company.com]]></Rl> <uid><![CDATA[3539145]]></uid> <Rmu><![CDATA[f8e8917f7964d4cc7c4c4226f060e3ea]]></Rmu> </login>
这就是我正在做的HttpPost postRequest = new HttpPost(urlString); 我该如何构造其余参数?
这是之前在androidsnippets.com上找到的示例(该站点目前不再维护)。
androidsnippets.com
// 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,你可以将参数添加为BasicNameValuePair。
BasicNameValuePair
另一种方法是使用(Http)URLConnection。另请参见使用java.net.URLConnection触发和处理HTTP请求。实际上,这是较新的Android版本(Gingerbread +)中的首选方法。另请参见此博客,此开发人员文档和Android的HttpURLConnectionjavadoc。
(Http)URLConnection
java.net.URLConnection
Gingerbread +
HttpURLConnectionjavadoc