Amazon SNS GCM/FCM 消息负载

Posted 2023-04-14

【中文标题】Amazon SNS GCM/FCM 消息负载

【英文标题】：Amazon SNS GCM/FCM message payload

【发布时间】：2017-08-22 03:09:27

【问题描述】：

我正在尝试使用 Amazon SNS 控制台中的发布端点将推送通知 (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 中实现相同的功能时，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;
    

控制台响应

发布请求：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 SO 答案 here 中建议的模式。

【参考方案1】：

这终于奏效了。我用的是杰克逊解析器。

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());