amazon中sns的使用

使用网页配置订阅

1. 创建主题>使用标准>自定义名称>其他默认 点击创建即可

2. 创建订阅
   

3. 订阅策略配置（不配置，会推送给多个人，除非你每个都创建主题）
   注意： 可以你可以随便写，后面的值只能是对象，不然会报错

4. 创建好订阅，会给你配置的链接推送请求（post请求，text/plain 格式）

body参数如下：

{Type: 'SubscriptionConfirmation',MessageId: 'e67f028f-3392-4f8e-871e-d5f6c1de7256',Token:'***',TopicArn: 'arn:aws:sns:us-west-1:180656209983:klover-test-topic',Message:'***',SubscribeURL:'https://sns.us-west-1.amazonaws.com/?***',SignatureVersion: '1',Signature:'***',SigningCertURL: '***',
};

5. 确认订阅
   （1）使用浏览器直接访问 SubscribeURL（第四步返回的url）
   （2）使用页面订阅 在下面输入框输入 SubscribeURL（第四步返回的url）

6. 如果没有接收到确认订阅 可以选择再次发送

安装java jar包

        <dependency><groupId>software.amazon.awssdk</groupId><artifactId>sns</artifactId><version>2.16.60</version></dependency>

使用

        // 推送String message = "{\"test\":1,\"name\":\"klover\"}";Sns.pubTopic(message); // 使用代码订阅Sns.subscribe("https://www.xxx.cn/api", "https");

工具类

package com.klover.sns;import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.sns.SnsClient;
import software.amazon.awssdk.services.sns.model.*;import java.util.HashMap;
import java.util.Map;/*** Sns* <a href="https://github.com/awsdocs/aws-doc-sdk-examples/blob/main/javav2/example_code/sns/src/main/java/com/example/sns/PublishTopic.java">sns 代码</a>** @author klover* @date 2024/3/28 15:05*/
public class Sns {private static final SnsClient snsClient;private static final String accessKeyId = "<your access key id>";private static final String secretAccessKey = "<your secret access key>";private static final String topicArn = "<your topic ARN>";static {AwsBasicCredentials credentials = AwsBasicCredentials.create(accessKeyId,secretAccessKey);snsClient = SnsClient.builder().region(Region.US_WEST_1).credentialsProvider(() -> credentials).build();}/*** 推送消息** @param message*/public static void pubTopic(String message) {try {// 通过筛选策略 指定推送者Map<String, MessageAttributeValue> map = new HashMap<>();map.put("clientId", MessageAttributeValue.builder().dataType("String").stringValue("123456").build());PublishRequest request = PublishRequest.builder().message(message).topicArn(topicArn).messageAttributes(map).build();PublishResponse result = snsClient.publish(request);System.out.println(result.messageId() + " Message sent. Status is " + result.sdkHttpResponse().statusCode());} catch (SnsException e) {System.out.println(e.awsErrorDetails().errorMessage());}}/*** 订阅** @param url* @param protocol http https*/public static void subscribe(String url, String protocol) {try {SubscribeRequest request = SubscribeRequest.builder().protocol(protocol).endpoint(url).returnSubscriptionArn(true).topicArn(topicArn).build();SubscribeResponse result = snsClient.subscribe(request);System.out.println("Subscription ARN is " + result.subscriptionArn() + "\n\n Status is "+ result.sdkHttpResponse().statusCode());// 设置筛选策略SetSubscriptionAttributesRequest subscriptionAttributesRequest = SetSubscriptionAttributesRequest.builder().subscriptionArn(result.subscriptionArn()).attributeName("FilterPolicy") // 这个名称不能动.attributeValue("{\"clientId\": [\"123457\"]}") // 底层要求 必须是对象 这个字段可以自己自定义.build();SetSubscriptionAttributesResponse setSubscriptionAttributesResponse = snsClient.setSubscriptionAttributes(subscriptionAttributesRequest);System.out.println(setSubscriptionAttributesResponse.sdkHttpResponse().statusCode());} catch (SnsException e) {System.out.println(e.awsErrorDetails().errorMessage());}}/*** 取消订阅**/public static void unsubscribe(String subscriptionArn) {try {UnsubscribeRequest request = UnsubscribeRequest.builder().subscriptionArn(subscriptionArn).build();UnsubscribeResponse result = snsClient.unsubscribe(request);System.out.println("\n\nStatus was " + result.sdkHttpResponse().statusCode()+ "\n\nSubscription was removed for " + request.subscriptionArn());} catch (SnsException e) {System.err.println(e.awsErrorDetails().errorMessage());System.exit(1);}}
}

代码示例