使用HttpClient模拟JSON请求

使用的jar包
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;

public abstract class AbstractService {
public void post_json(String url, String jsonString) {
        DefaultHttpClient httpClient = new DefaultHttpClient();
        try {
            HttpPost request = new HttpPost(url);
            StringEntity params = new StringEntity(jsonString, "UTF-8");
            request.addHeader("content-type", "application/json");
            request.setEntity(params);
            HttpResponse response = httpClient.execute(request);
            HttpEntity entity = response.getEntity();
            InputStream instream = entity.getContent();
            BufferedReader in = new BufferedReader(new InputStreamReader(instream, "UTF-8"));
            StringBuffer sb = new StringBuffer();
            String data = null;
            while ((data = in.readLine()) != null) {
                sb.append(data);
                sb.append("\n");
            }
            System.out.println(sb.toString());
            if (in != null) {
                in.close();
            }

        } catch (Exception e) {
        } finally {
            httpClient.getConnectionManager().shutdown();
        }

    }
}