Amazon SNS GCM/FCM消息有效负载

Question

我正在尝试使用亚马逊SNS控制台中的发布endpoint将推送通知（PN）从我的应用服务器发送到android设备，该消息和消息结构为json，工作正常。

{
"GCM": "{ \"notification\": { \"text\": \"test message\" } }"
}

但是，当我试图实现相同的Java它的设备没有收到通知。

PublishRequest publishRequest = new PublishRequest();
        publishRequest.setTargetArn("arn:aws:sns:ap-south-1:818862955266:endpoint/GCM/TestApp/a1ec8114-58c9-371b-bb76-d8d16e674e52");
        String message = "{\"GCM\": \"{ \"notification\": { \"text\": \"test message\" } }\"}";

        ObjectMapper mapper = new ObjectMapper();
        PushRequest pushRequest = new PushRequest();
        pushRequest.setDef("Test");

        GCM gcm = new GCM();
        Notification notification = new Notification();
        notification.setText("hello");
        gcm.setNotification(notification);
        pushRequest.setGcm(gcm);

        String jsonInString = mapper.writeValueAsString(pushRequest);
        publishRequest.setMessage(jsonInString);
        publishRequest.setMessageStructure("json");
        System.out.println("Publist request:"+publishRequest.toString());
        PublishResult publishResult = amazonSNSTemplate.getAmazonSNSClient().publish(publishRequest);
        System.out.println(publishResult.toString());
        System.out.println(publishResult.getSdkResponseMetadata().toString());


public class PushRequest {

    @JsonProperty("default")
    private String def;
    @JsonProperty("GCM")
    private GCM gcm;
    public String getDef() {
        return def;
    }
    public void setDef(String def) {
        this.def = def;
    }
    public GCM getGcm() {
        return gcm;
    }
    public void setGcm(GCM gcm) {
        this.gcm = gcm;
    }



}

public class GCM {
    private Notification notification;

    @JsonProperty("notification")
    public Notification getNotification() {
        return notification;
    }

    public void setNotification(Notification notification) {
        this.notification = notification;
    }


}
public class Notification {
    private String text;

    @JsonProperty("text")
    public String getText() {
        return text;
    }

    public void setText(String text) {
        this.text = text;
    }

}

控制台上的响应

发布列表请求:{ target arn:arn:AWS:SNS:AP-south-1:818862955266:endpoint/GCM/Test app/a1ec 8114-58c 9-371 b-bb76-d 8d 16 e 674 e 52，消息:{"default":"Test "，" GCM ":{ " notification ":{ " text ":" hello " } }，MessageStructure: json，Message attributes:{ } { MessageId:7 DFB 613 c-13 c

可能是什么问题？

此外，我在这里遵循SO答案中建议的模式。

Answer 1

这终于奏效了。我使用了jackson解析器。

public class PushRequest {

    @JsonProperty("default")
    private String def;
    @JsonProperty("GCM")
    private GCM gcm;
    public String getDef() {
        return def;
    }
    public void setDef(String def) {
        this.def = def;
    }
    public GCM getGcm() {
        return gcm;
    }
    public void setGcm(GCM gcm) {
        this.gcm = gcm;
    }



}

public class GCM {
    private Notification notification;

    @JsonProperty("notification")
    public Notification getNotification() {
        return notification;
    }

    public void setNotification(Notification notification) {
        this.notification = notification;
    }


}
public class Notification {
    private String text;

    @JsonProperty("text")
    public String getText() {
        return text;
    }

    public void setText(String text) {
        this.text = text;
    }

}


PublishRequest publishRequest = new PublishRequest();
            publishRequest.setTargetArn("arn:aws:sns:ap-south-1:818862955266:endpoint/GCM/TestApp/ac338195-1b87-3521-bd98-b7867a83ff27");

//          String message = "{\"GCM\": \"{ \"notification\": { \"text\": \"test message\" } }\"}";

            ObjectMapper mapper = new ObjectMapper();
            PushRequest pushRequest = new PushRequest();
            pushRequest.setDef("Testing out FB messages");

            GCM gcm = new GCM();
            Notification notification = new Notification();
            notification.setText("hello");
            gcm.setNotification(notification);
            pushRequest.setGcm(gcm);

            String jsonInString = mapper.writeValueAsString(pushRequest);
            publishRequest.setMessage(jsonInString);
            publishRequest.setMessageStructure("json");
            System.out.println("Publist request:"+publishRequest.toString());
            PublishResult publishResult = amazonSNSTemplate.getAmazonSNSClient().publish(publishRequest);
            System.out.println(publishResult.toString());
            System.out.println(publishResult.getSdkResponseMetadata().toString());