从Servlet使用Facebooks Graph-API以及编码问题

最新推荐文章于 2020-10-21 22:33:25 发布

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最新推荐文章于 2020-10-21 22:33:25 发布

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分类专栏： android 文章标签： Servlet Facebook

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本文详细介绍了如何使用URLEncoder进行特殊字符转码，并通过HTTP POST请求与HttpClient API发送参数到Facebook API，包括编码、设置请求头和执行请求的过程。

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特殊字符转码：String param = URLEncoder.encode("Hermann-Löns", "UTF-8");

String url = "http://facebook.com/some/api";
String charset = "UTF-8";
String param1 = URLEncoder.encode("value1", charset);
String param2 = URLEncoder.encode("value2", charset);
String query = String.format("param1=%s&param2=%s", param1, param2);

URLConnection urlConnection = new URL(url).openConnection();
urlConnection.setUseCaches(false);
urlConnection.setDoOutput(true); // Triggers POST.
urlConnection.setRequestProperty("accept-charset", charset);
urlConnection.setRequestProperty("content-type", "application/x-www-form-urlencoded");

OutputStreamWriter writer = null;
try {
writer = new OutputStreamWriter(urlConnection.getOutputStream(), charset);
writer.write(query); // Write POST query string (if any needed).
} finally {
if (writer != null) try { writer.close(); } catch (IOException logOrIgnore) {}
}

InputStream response = urlConnection.getInputStream();
// Now do your thing with the facebook response.

HttpClient API :

String url = "http://facebook.com/some/api"; 
String charset = "UTF-8"; 
List<NameValuePair> params = new ArrayList<NameValuePair>(); 
params.add(new BasicNameValuePair("param1", "value1")); 
params.add(new BasicNameValuePair("param2", "value2")); 
UrlEncodedFormEntity query = new UrlEncodedFormEntity(params, charset); 
 
HttpClient client = new DefaultHttpClient() 
HttpPost post = new HttpPost(url); 
post.setEntity(query); 
InputStream response = client.execute(post).getEntity().getContent(); 
// Now do your thing with the facebook response.