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128 | import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;
/**
* Base class for REST Clients
*/
public class RESTClient {
/**
* Reads the contents of a stream into a string
*/
private String convertStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch (IOException e) {
throw new RuntimeException(e);
} finally {
try {
is.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return sb.toString();
}
/**
* Makes a GET request to the specified url and returns a JSON Object
* @param url
* @return a JSON encoded response
* @throws JSONException
*/
protected JSONObject makeGETRequest(String url) throws JSONException {
HttpClient httpclient = new DefaultHttpClient();
HttpGet httpget = new HttpGet(url);
HttpResponse response;
String resultText = "";
try {
response = httpclient.execute(httpget);
HttpEntity entity = response.getEntity();
if (entity != null) {
InputStream instream = null;
try {
instream = entity.getContent();
resultText = convertStreamToString(instream);
}
finally {
instream.close();
}
}
} catch (ClientProtocolException e) {
throw new RuntimeException(e);
} catch (IOException e) {
throw new RuntimeException(e);
}
return new JSONObject(resultText);
}
/**
* Makes a POST request to the specified URL and passes the provided JSON Object
* @param url URL Endpoint
* @param contents JSON Object to post to URL
* @return a JSON encoded response
* @throws JSONException
*/
protected JSONObject makePOSTRequest(String url, JSONObject contents) throws JSONException {
HttpClient httpclient = new DefaultHttpClient();
HttpPost post = new HttpPost(url);
try {
post.setEntity(new StringEntity(contents.toString()));
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
HttpResponse response;
String resultText = "";
try {
response = httpclient.execute(post);
HttpEntity entity = response.getEntity();
if (entity != null) {
InputStream instream = null;
try {
instream = entity.getContent();
resultText = convertStreamToString(instream);
}
finally {
instream.close();
}
}
} catch (ClientProtocolException e) {
throw new RuntimeException(e);
} catch (IOException e) {
throw new RuntimeException(e);
}
return new JSONObject(resultText);
}
}
|