PushClient.java

package push;

import java.io.BufferedReader;
import java.io.InputStreamReader;

import org.apache.commons.codec.digest.DigestUtils;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONObject;

public class PushClient {

    // The user agent
    protected final String USER_AGENT = "Mozilla/5.0";

    // This object is used for sending the post request to Umeng
    protected HttpClient client = new DefaultHttpClient();

    // The host
    protected static final String host = "http://msg.umeng.com";

    // The upload path
    protected static final String uploadPath = "/upload";

    // The post path
    protected static final String postPath = "/api/send";

    public boolean send(UmengNotification msg) throws Exception {
        String timestamp = Integer.toString((int) (System.currentTimeMillis() / 1000));
        msg.setPredefinedKeyValue("timestamp", timestamp);
        String url = host + ":80"+postPath;
        String postBody = msg.getPostBody();
        String sign = DigestUtils.md5Hex(("POST" + url + postBody + msg.getAppMasterSecret()).getBytes("utf8"));
        url = url + "?sign=" + sign;
        String url1 = "http://msg.umeng.com:80/api/send?sign=" + sign;
        HttpPost post = new HttpPost(url1);
        post.setHeader("User-Agent", USER_AGENT);
        StringEntity se = new StringEntity(postBody, "UTF-8");
        post.setEntity(se);
        // Send the post request and get the response
        HttpResponse response = client.execute(post);
        int status = response.getStatusLine().getStatusCode();
        System.out.println("Response Code : " + status);
        BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
        StringBuffer result = new StringBuffer();
        String line = "";
        while ((line = rd.readLine()) != null) {
            result.append(line);
        }
        System.out.println(result.toString());
        if (status == 200) {
            System.out.println("Notification sent successfully.");
        } else {
            System.out.println("Failed to send the notification!");
        }
        return true;
    }

    // Upload file with device_tokens to Umeng
    public String uploadContents(String appkey, String appMasterSecret, String contents) throws Exception {
        // Construct the json string
        JSONObject uploadJson = new JSONObject();
        uploadJson.put("appkey", appkey);
        String timestamp = Integer.toString((int) (System.currentTimeMillis() / 1000));
        uploadJson.put("timestamp", timestamp);
        uploadJson.put("content", contents);
        // Construct the request
        String url = host + uploadPath;
        String postBody = uploadJson.toString();
        String sign = DigestUtils.md5Hex(("POST" + url + postBody + appMasterSecret).getBytes("utf8"));
        url = url + "?sign=" + sign;
        HttpPost post = new HttpPost(url);
        post.setHeader("User-Agent", USER_AGENT);
        StringEntity se = new StringEntity(postBody, "UTF-8");
        post.setEntity(se);
        // Send the post request and get the response
        HttpResponse response = client.execute(post);
        System.out.println("Response Code : " + response.getStatusLine().getStatusCode());
        BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
        StringBuffer result = new StringBuffer();
        String line = "";
        while ((line = rd.readLine()) != null) {
            result.append(line);
        }
        System.out.println(result.toString());
        // Decode response string and get file_id from it
        JSONObject respJson = new JSONObject(result.toString());
        String ret = respJson.getString("ret");
        if (!ret.equals("SUCCESS")) {
            throw new Exception("Failed to upload file");
        }
        JSONObject data = respJson.getJSONObject("data");
        String fileId = data.getString("file_id");
        // Set file_id into rootJson using setPredefinedKeyValue

        return fileId;
    }

}