Use shared HttpClient instance for multiple requests

CookieHttpRequestTest.java

package concurrentRequest;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.httpclient.HttpStatus;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

public class CookieHttpRequestTest {
	
	
	public static void main(String[] args) throws ClientProtocolException, IOException {
		HttpClient httpClient = new DefaultHttpClient();

		getJsonByPost(httpClient,new HashMap<String, String>(), "http://localhost:8080/account/login.do?username=onse&surname=two&firstname=three&password=pwd");
		getJsonByPost(httpClient,new HashMap<String, String>(), "http://localhost:8080/account/get.do");
		
		
	}
	
	public static String getJsonByPost(HttpClient httpClient, Map<String, String> paramMap, String resUrl) throws ClientProtocolException, IOException {
		String result = null;
		HttpPost httpRequest = new HttpPost(resUrl);
		List<NameValuePair> params = new ArrayList<NameValuePair>();
		for (Map.Entry<String, String> param : paramMap.entrySet()) {
			params.add(new BasicNameValuePair(param.getKey(), param.getValue()));
		}
		httpRequest.setHeader("Content-Type", "application/x-www-form-urlencoded; charset=utf-8");
		HttpEntity httpEntity = new UrlEncodedFormEntity(params, "UTF-8");
		httpRequest.setEntity(httpEntity);
		HttpResponse httpResponse = httpClient.execute(httpRequest);
		if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
			result = EntityUtils.toString(httpResponse.getEntity());
			System.out.println(result);
			return result;
		}

		return null;
	}
}