AWS云监视事件发布主题不起作用:IOS无声推送

Question

我想通过SNS定期发送一个无声的推送。这是由Cloudwatch事件触发的。推送消息会发出，但是它是作为原始文本发送的，并且不会被SNS转换成无声的推送格式。正如你所看到的，SNS主题发布的作品很好，无声的推送就会熄灭。我做错什么了？

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Answer 1

不要纠结于此，将其发送到lambda函数，在那里您可以创建JSON请求。

public String handle(JsonObject request, Context lambdaContext) throws 
BadRequestException, InternalErrorException {
    logger = lambdaContext.getLogger();
    Map<String, MessageAttributeValue> messageAttributes = new HashMap<>();
    AmazonSNSClient client = new AmazonSNSClient().withRegion(Regions.EU_WEST_1);

    PublishRequest rq = new PublishRequest();
    rq.setTopicArn(ENDPOINT_TOPIC);
    rq.setMessageStructure("json");
    rq.setMessage(getSilentAppleMessage());
    messageAttributes.put("AWS.SNS.MOBILE.APNS.TTL", new MessageAttributeValue().withDataType("String").withStringValue("120"));
    rq.setMessageAttributes(messageAttributes);
    client.publish(rq);
    GeneralResponse output = new GeneralResponse();
    output.setSuccess(true);
    return getGson().toJson(output, GeneralResponse.class);
}

public static String getSilentAppleMessage() {
    Map<String, Object> mainMessageMap = new HashMap<String, Object>();
    Map<String, Object> appleMessageMap = new HashMap<String, Object>();
    Map<String, Object> appMessageMap = new HashMap<String, Object>();

    appMessageMap.put("content-available", 1);
    appleMessageMap.put("aps", appMessageMap);
    mainMessageMap.put("default", "");
    mainMessageMap.put("APNS_SANDBOX", jsonify(appleMessageMap));

    logger.log(jsonify(mainMessageMap));
    return jsonify(mainMessageMap);
}

private static String jsonify(Object message) {
    try {
        return objectMapper.writeValueAsString(message);
    } catch (Exception e) {
        e.printStackTrace();
        throw (RuntimeException) e;
    }
}