极光推送 使用实例 （一）服务端

最近一直在做后台开发，但心里还是总惦记着Android，感觉还是Android有意思。正好项目中要用到极光推送，今天抽空来记录下这两天的研究成果。

         我们知道iOS有自己的推送服务，但很遗憾Android没有原生的推送服务，现在有很多第三方的推送服务，比如个推、极光、亚马逊、百度云、聚能等。今天我们就来研究下极光推送的后台服务器如何实现。

         关键点：

        1.首先最好是把极光官网Java后台服务器的demo下载下来，里面有我们需要的jar包，以及example.

        2.极光推送的关键jpushClient = new JPushClient(masterSecret, appKey, 3);就是这个类。其中的参数需要我们从极光官网注册开发者，然后创建具体项目获取相应的两                 个key值。其中appKey值就是我们手机端对应的key值

        3.极光推送给我们提供了很多种推送的方式，我们可以选择某一个平台进行推送（Android ,IOS ,Windows Phone），也可以全部推送；我们可以针对某个特别的用户进行推送（设置alisa），也可以针对特别的群体进行推送（设置tag），第三个参数是设置推送保留的时间，只要在有效时间内上线就可以收到推送信息

        4. 极光推送现在都用https连接，提交请求是post，获取数据为get

        ok 接下来就看服务端的实现（JAVA）,JdPush推送方法+一个Servlet

:

package com.weiwend.jdpush;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import cn.jpush.api.JPushClient;
import cn.jpush.api.common.resp.APIConnectionException;
import cn.jpush.api.common.resp.APIRequestException;
import cn.jpush.api.push.PushResult;
import cn.jpush.api.push.model.Message;
import cn.jpush.api.push.model.Options;
import cn.jpush.api.push.model.Platform;
import cn.jpush.api.push.model.PushPayload;
import cn.jpush.api.push.model.audience.Audience;
import cn.jpush.api.push.model.audience.AudienceTarget;
import cn.jpush.api.push.model.notification.AndroidNotification;
import cn.jpush.api.push.model.notification.IosNotification;
import cn.jpush.api.push.model.notification.Notification;

public class Jdpush {
     protected static final Logger LOG = LoggerFactory.getLogger(Jdpush.class);

     // demo App defined in resources/jpush-api.conf

    public static final String TITLE = "申通快递";
    public static final String ALERT = "祝大家新春快乐";
    public static final String MSG_CONTENT = "申通快递祝新老客户新春快乐";
    public static final String REGISTRATION_ID = "0900e8d85ef";
    public static final String TAG = "tag_api";

    public  static JPushClient jpushClient=null;

    public static void testSendPush(String appKey ,String masterSecret) {



         jpushClient = new JPushClient(masterSecret, appKey, 3);

        // HttpProxy proxy = new HttpProxy("localhost", 3128);
        // Can use this https proxy: https://github.com/Exa-Networks/exaproxy


        // For push, all you need do is to build PushPayload object.
        //PushPayload payload = buildPushObject_all_all_alert();
         //生成推送的内容，这里我们先测试全部推送
        PushPayload payload=buildPushObject_all_alias_alert();


        try {
            System.out.println(payload.toString());
            PushResult result = jpushClient.sendPush(payload);
            System.out.println(result+"................................");

            LOG.info("Got result - " + result);

        } catch (APIConnectionException e) {
            LOG.error("Connection error. Should retry later. ", e);

        } catch (APIRequestException e) {
            LOG.error("Error response from JPush server. Should review and fix it. ", e);
            LOG.info("HTTP Status: " + e.getStatus());
            LOG.info("Error Code: " + e.getErrorCode());
            LOG.info("Error Message: " + e.getErrorMessage());
            LOG.info("Msg ID: " + e.getMsgId());
        }
    }

    public static PushPayload buildPushObject_all_all_alert() {
        return PushPayload.alertAll(ALERT);
    }

    public static PushPayload buildPushObject_all_alias_alert() {
        return PushPayload.newBuilder()
                .setPlatform(Platform.all())//设置接受的平台
                .setAudience(Audience.all())//Audience设置为all，说明采用广播方式推送，所有用户都可以接收到
                .setNotification(Notification.alert(ALERT))
                .build();
    }

    public static PushPayload buildPushObject_android_tag_alertWithTitle() {
        return PushPayload.newBuilder()
                .setPlatform(Platform.android())
                .setAudience(Audience.all())
                .setNotification(Notification.android(ALERT, TITLE, null))
                .build();
    }

    public static PushPayload buildPushObject_android_and_ios() {
        return PushPayload.newBuilder()
                .setPlatform(Platform.android_ios())
                .setAudience(Audience.tag("tag1"))
                .setNotification(Notification.newBuilder()
                        .setAlert("alert content")
                        .addPlatformNotification(AndroidNotification.newBuilder()
                                .setTitle("Android Title").build())
                        .addPlatformNotification(IosNotification.newBuilder()
                                .incrBadge(1)
                                .addExtra("extra_key", "extra_value").build())
                        .build())
                .build();
    }

    public static PushPayload buildPushObject_ios_tagAnd_alertWithExtrasAndMessage() {
        return PushPayload.newBuilder()
                .setPlatform(Platform.ios())
                .setAudience(Audience.tag_and("tag1", "tag_all"))
                .setNotification(Notification.newBuilder()
                        .addPlatformNotification(IosNotification.newBuilder()
                                .setAlert(ALERT)
                                .setBadge(5)
                                .setSound("happy")
                                .addExtra("from", "JPush")
                                .build())
                        .build())
                 .setMessage(Message.content(MSG_CONTENT))
                 .setOptions(Options.newBuilder()
                         .setApnsProduction(true)
                         .build())
                 .build();
    }

    public static PushPayload buildPushObject_ios_audienceMore_messageWithExtras() {
        return PushPayload.newBuilder()
                .setPlatform(Platform.android_ios())
                .setAudience(Audience.newBuilder()
                        .addAudienceTarget(AudienceTarget.tag("tag1", "tag2"))
                        .addAudienceTarget(AudienceTarget.alias("alias1", "alias2"))
                        .build())
                .setMessage(Message.newBuilder()
                        .setMsgContent(MSG_CONTENT)
                        .addExtra("from", "JPush")
                        .build())
                .build();
    }
}

可以看到上面我们推送平台设置的是所有平台，Audience设置为all（所有用户），这里key值和masterSecret值放在servlet中了。

servlet很简单，只要传入两个key值，调用该方法就可以

package com.weiwend.jdpush.servlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.sun.org.apache.xml.internal.serializer.utils.Utils;
import com.weiwend.jdpush.Jdpush;
import com.weiwend.jdpush.utils.Base64Utils;

/**
 * Servlet implementation class tuisong
 */
public class tuisong extends HttpServlet {
    private static final long serialVersionUID = 1L;

    private static final String appKey ="84cf5ee2099c654aa03a5d70";
    private static final String masterSecret = "7cf23f25a41806d5fd29e3c5";

    public tuisong() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        Jdpush.testSendPush(appKey,masterSecret);
        System.out.println("sucess");
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
    }

}

最后来看下运行的结果，可以看到，提交数据是以json格式。如果返回{"msg_id":1663001319,"sendno":1981162191}这样数据说明推送已经成功发送

{"platform":"all","audience":"all","notification":{"alert":"祝大家新春快乐"},"options":{"sendno":1981162191,"apns_production":false}}
{"msg_id":1663001319,"sendno":1981162191}................................
sucess

源码分析：

 JPushClient jpushClient = new JPushClient(masterSecret, appKey, 3);实际上是实例化了一下三个类

public JPushClient(String masterSecret, String appKey, int maxRetryTimes) {
        _pushClient = new PushClient(masterSecret, appKey, maxRetryTimes);
        _reportClient = new ReportClient(masterSecret, appKey, maxRetryTimes);
        _deviceClient = new DeviceClient(masterSecret, appKey, maxRetryTimes);
    }

PushPayload payload = buildPushObject_all_all_alert();，PushPayload类里包含了传递和返回的所有数据

public class PushPayload implements PushModel {
    private static final String PLATFORM = "platform";
    private static final String AUDIENCE = "audience";
    private static final String NOTIFICATION = "notification";
    private static final String MESSAGE = "message";
    private static final String OPTIONS = "options";

    private static final int MAX_GLOBAL_ENTITY_LENGTH = 1200;  // Definition acording to JPush Docs
    private static final int MAX_IOS_PAYLOAD_LENGTH = 220;  // Definition acording to JPush Docs

    private static Gson _gson = new Gson();

    private final Platform platform;
    private final Audience audience;
    private final Notification notification;
    private final Message message;
    private Options options;


    private PushPayload(Platform platform, Audience audience,
            Notification notification, Message message, Options options) {
        this.platform = platform;
        this.audience = audience;
        this.notification = notification;
        this.message = message;
        this.options = options;
    }

 PushResult result = jpushClient.sendPush(payload);可以看到就是sendPost方法，然后接受返回的数据

public PushResult sendPush(PushPayload pushPayload) throws APIConnectionException, APIRequestException {
       Preconditions.checkArgument(! (null == pushPayload), "pushPayload should not be null");

       if (_globalSettingEnabled) {
           pushPayload.resetOptionsTimeToLive(_timeToLive);
           pushPayload.resetOptionsApnsProduction(_apnsProduction);
       }

       ResponseWrapper response = _httpClient.sendPost(_baseUrl + PUSH_PATH, pushPayload.toString());

       return BaseResult.fromResponse(response, PushResult.class);
   }

另外我专门找了下sendNo如何生成的，其实就是随机生成的一个数字

public static Options sendno() {
       return newBuilder().setSendno(ServiceHelper.generateSendno()).build();
   }

public static int generateSendno() {
       return RANDOM.nextInt((MAX - MIN) + 1) + MIN;
   }

大家有兴趣也可以详细看一下代码的实现.

         刚开始值直接下载的demo运行，一直提示Audience没有对应的用户，是引文Audience设置了别名alias，而用户里面并没有设置对应的alias，所以找不到对应的用户。

最后我们来看一张图，再深入理解下极光推送的原理

本文转自http://blog.csdn.net/gebitan505/article/details/46812879 感谢作者