Amazon SNS GCM/FCM 消息负载

Question

我正在尝试使用 Amazon SNS 控制台中的发布终端节点将推送通知 (PN( 从我的应用程序服务器发送到 android 设备，此消息和消息结构为 json，它工作正常。

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

但是当我尝试在 Java 中实现相同的内容时，设备不会收到通知。

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

Publist request：{TargetArn： arn：aws：sns：ap-south-1：818862955266：endpoint/GCM/TestApp/a1ec8114-58c9-371b-bb76-d8d16e674e52，消息： {"default"："Test"，"GCM"：{"notification"：{"text"："hello"}}}，MessageStructure： json，MessageAttributes： {}} {MessageId： 7DFB613C-06D0-5FE6-8766-3068C9438614} {AWS_REQUEST_ID=3d0e13f4-b2be-5c95-ad43-42a07d2d5567}

可能是什么问题？

另外，我遵循此处SO答案中建议的模式。

Answer 1

这终于奏效了。我使用了杰克逊解析器。

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());