我正在尝试使用 org.springframework.cloud.aws.messaging.core.NotificationMessagingTemplate
(来自 Spring Cloud AWS)将通知发布到 SNS 主题。
每次发布通知时都会生成一条警告消息:
WARN [org.springframework.cloud.aws.messaging.core.TopicMessageChannel] 名称为“id”且类型为“java.util.UUID”的消息 header 无法作为消息属性发送,因为 SNS 不支持它。
问题似乎是 org.springframework.messaging.MessageHeaders
自动生成一个 id header ,类型为 java.util.UUID,这不是 spring cloud 知道如何处理的东西。
除了抑制日志之外,是否有办法避免自动生成 header (我可以在没有 UUID 的情况下生活)或避免警告?
类似的事情也在影响 SQS:
相关问题: spring-cloud-aws Spring creates message header attribute not supported by SQS Related Bug: Warning "'java.util.UUID' cannot be sent as message attribute ..." on any request sent to SQS channel
我的 Controller 看起来像这样:
package com.stackoverflow.sample.web;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.aws.messaging.core.NotificationMessagingTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
@RequestMapping("/whatever")
public class SampleController {
@Autowired
private NotificationMessagingTemplate template;
@RequestMapping(method = RequestMethod.GET)
public String handleGet() {
this.template.sendNotification("message", "subject");
return "yay";
}
}
}
我的 Spring 配置如下所示:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:aws-context="http://www.springframework.org/schema/cloud/aws/context"
xmlns:aws-messaging="http://www.springframework.org/schema/cloud/aws/messaging"
xsi:schemaLocation="
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
http://www.springframework.org/schema/cloud/aws/context http://www.springframework.org/schema/cloud/spring-cloud-aws-context.xsd
http://www.springframework.org/schema/cloud/aws/messaging http://www.springframework.org/schema/cloud/spring-cloud-aws-messaging.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">
<context:annotation-config />
<context:component-scan base-package="com.stackoverflow.sample" />
<mvc:annotation-driven />
<aws-context:context-credentials>
<aws-context:instance-profile-credentials/>
<aws-context:simple-credentials access-key="MyKey" secret-key="mySecret" />
</aws-context:context-credentials>
<aws-messaging:notification-messaging-template id="notificationMessagingTemplate" region="us-west-2" default-destination="myTopic" />
</beans>
最佳答案
出现问题是因为构造函数调用了MessageHeaders类
MessageHeaders 类
MessageHeaders(Map<String, Object> headers) { } on line 39
为了不发送 id header ,您需要调用构造函数 MessageHeaders 类
MessageHeaders(Map<String, Object> headers, UUID id, Long timestamp){} on line 43
因为这个构造函数有条件不自动创建id头
要停止发送 header ID,您需要覆盖 MessageHeader 和 NotificationMessagingTemplate 类
类 MessageHeaders
public class MessageHeadersCustom extends MessageHeaders {
public MessageHeadersCustom() {
super(new HashMap<String, Object>(), ID_VALUE_NONE, null);
}
}
类 NotificationMessagingTemplate
public class NotificationMessagingTemplateCustom extends NotificationMessagingTemplate {
public NotificationMessagingTemplateCustom(AmazonSNS amazonSns) {
super(amazonSns);
}
@Override
public void sendNotification(Object message, String subject) {
MessageHeaders headersCustom = new MessageHeadersCustom();
headersCustom.put(TopicMessageChannel.NOTIFICATION_SUBJECT_HEADER, subject);
this.convertAndSend(getRequiredDefaultDestination(), message, headersCustom);
}
}
最后,您将要进行调用的类需要使用您的实现
package com.stackoverflow.sample.web;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.aws.messaging.core.NotificationMessagingTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
@RequestMapping("/whatever")
public class SampleController {
@Autowired
private NotificationMessagingTemplateCustom template;
@RequestMapping(method = RequestMethod.GET)
public String handleGet() {
this.template.sendNotification("message", "subject");
return "yay";
}
}
}
关于java - Spring Cloud AWS - 发布 SNS 通知的 header 无效,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35483292/