com.nuance.expertassistant.HTTPConnection.java Source code

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Here is the source code for com.nuance.expertassistant.HTTPConnection.java

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package com.nuance.expertassistant;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.*;

public class HTTPConnection {

    public static final String USER_AGENT = "Mozilla/5.0";

    public static void main(String[] args) throws Exception {

        String url = "http://ibm-dqa8.grid.nuance.com:8080/question?";

        HTTPConnection http = new HTTPConnection();

        System.out.println("\nTesting 2 - Send Http POST request");

        HashMap<String, String> paramMap = new HashMap<String, String>();
        paramMap.put("contextId", "451425");
        paramMap.put("question", "touch screen with beats audio");

        http.sendPost(url, paramMap);
    }

    // HTTP GET request
    public static JSONObject sendGet(String getURL) throws Exception {

        String url = getURL;

        HttpClient client = new DefaultHttpClient();
        HttpGet request = new HttpGet(url);

        // add request header
        request.addHeader("User-Agent", USER_AGENT);

        System.out.println(" The URL is :" + url);

        HttpResponse response = client.execute(request);

        System.out.println("\nSending 'GET' request to URL : " + url);
        System.out.println("Response Code : " + response.getStatusLine().getStatusCode());

        BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));

        StringBuilder builder = new StringBuilder();
        for (String line = null; (line = rd.readLine()) != null;) {
            builder.append(line).append("\n");
        }

        System.out.print("JSON TEXT : " + builder.toString());

        String jsonText = builder.toString();

        if (jsonText.startsWith("[")) {
            jsonText = jsonText.substring(1, jsonText.length());
        }

        if (jsonText.endsWith("]")) {
            jsonText = jsonText.substring(0, jsonText.length() - 1);
        }

        JSONObject object = new JSONObject(jsonText);

        return object;

    }

    // HTTP POST request
    public static String sendPost(String postURL, HashMap<String, String> paramMap) throws Exception {

        String url = postURL;

        HttpClient client = new DefaultHttpClient();
        HttpPost post = new HttpPost(url);

        post.setHeader("User-Agent", USER_AGENT);

        if (paramMap != null) {
            List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
            System.out.println(" Printing Parameters ");
            for (String key : paramMap.keySet()) {
                System.out.println(key + " :: " + paramMap.get(key));

                urlParameters.add(new BasicNameValuePair(key, paramMap.get(key)));

            }

            post.setEntity(new UrlEncodedFormEntity(urlParameters));
        }
        HttpResponse response = client.execute(post);
        System.out.println("\nSending 'POST' request to URL : " + url);
        System.out.println("Post parameters : " + post.getEntity());
        System.out.println("Response Code : " + response.getStatusLine().getStatusCode());

        BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));

        StringBuilder builder = new StringBuilder();
        for (String line = null; (line = rd.readLine()) != null;) {
            builder.append(line).append("\n");
        }
        /*
         System.out.print("JSON TEXT : " + builder.toString());
             
         String jsonText = builder.toString();
             
             jsonText = "{\"response\":" + jsonText + "}";
            
                     
                 JSONObject object = new JSONObject(jsonText); */

        System.out.println(" The response code is :" + response.getStatusLine().getStatusCode());

        System.out.println(" The string returned is :" + builder.toString());

        return builder.toString();

    }

}