topic交换机

.idea/runConfigurations.xml

@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RunConfigurationProducerService">
-    <option name="ignoredProducers">
-      <set>
-        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
-      </set>
-    </option>
-  </component>
-</project>

src/main/java/io/jiulinxiri/rabbitmq/seven/EmitLogTopic.java

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+package io.jiulinxiri.rabbitmq.seven;
+
+import com.rabbitmq.client.BuiltinExchangeType;
+import com.rabbitmq.client.Channel;
+import io.jiulinxiri.rabbitmq.utils.RabbitMqUtils;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class EmitLogTopic {
+    private static final String EXCHANGE_NAME = "topic_logs";
+
+    public static void main(String[] args) throws Exception {
+        Channel channel = RabbitMqUtils.getChannel();
+        // 声明交换机类型Topic
+        channel.exchangeDeclare(EXCHANGE_NAME, BuiltinExchangeType.TOPIC);
+        Map<String, String> bindingKeyMap = new HashMap<>();
+        bindingKeyMap.put("quick.orange.rabbit","被队列 Q1Q2接收到");
+        bindingKeyMap.put("lazy.orange.elephant","被队列 Q1Q2接收到");
+        bindingKeyMap.put("quick.orange.fox","被队列  Q1接收到");
+        bindingKeyMap.put("lazy.brown.fox","被队列  Q2接收到");
+        bindingKeyMap.put("lazy.pink.rabbit","虽然满足两个绑定但只被队列  Q2接收一次");
+        bindingKeyMap.put("quick.brown.fox","不匹配任何绑定不会被任何队列接收到会被丢弃");
+        bindingKeyMap.put("quick.orange.male.rabbit","是四个单词不匹配任何绑定会被丢弃");
+        bindingKeyMap.put("lazy.orange.male.rabbit","是四个单词但匹配  Q2");
+
+
+        for (Map.Entry<String, String> bindingKeyEntry:
+                bindingKeyMap.entrySet()) {
+            String bindingKey = bindingKeyEntry.getKey();
+            String message = bindingKeyEntry.getValue();
+            channel.basicPublish(EXCHANGE_NAME, bindingKey, null,  message.getBytes());
+            System.out.println("生产者发出消息：" + message);
+        }
+    }
+}

src/main/java/io/jiulinxiri/rabbitmq/seven/README.md

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+---
+gitea: none
+include_toc: true
+---
+
+### Topic Exchange(主体交换机)
+topic 交换机的消息的  routing_key 不能随意写，必须满足一定的要求，它必须是一个单
+词列表，以点号分隔开。这些单词可以是任意单词，比如"stock.usd.nyse", "nyse.vmw",
+"quick.orange.rabbit"
+
+通配符的使用:
+* *(星号)可以代替一个单词
+* \#(井号)可以替代零个或多个单词
+
+<img alt="g1pm8PDIWKA9475" src="https://vip1.loli.io/2021/12/01/g1pm8PDIWKA9475.png" width="400"/>
+
+Q1-->绑定的是: 中间带 orange 带  3 个单词的字符串(*.orange.*)
+
+Q2-->绑定的是 :最后一个单词是 rabbit 的  3 个单词(*.*.rabbit)以及第一个单词是 lazy 的多个单词(lazy.#)
+
+**注意点**:
+1. 当一个队列绑定键是#,那么这个队列将接收所有数据，就有点像  fanout 了
+2. 如果队列绑定键当中没有#和*出现，那么该队列绑定类型就是  direct 了

src/main/java/io/jiulinxiri/rabbitmq/seven/ReceiveLogsTopic01.java

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+package io.jiulinxiri.rabbitmq.seven;
+
+import com.rabbitmq.client.BuiltinExchangeType;
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.DeliverCallback;
+import io.jiulinxiri.rabbitmq.utils.RabbitMqUtils;
+
+import java.nio.charset.StandardCharsets;
+
+public class ReceiveLogsTopic01 {
+    private static final String EXCHANGE_NAME = "topic_logs";
+
+    public static void main(String[] args) throws Exception {
+        Channel channel = RabbitMqUtils.getChannel();
+        // 声明交换机类型Topic
+        channel.exchangeDeclare(EXCHANGE_NAME, BuiltinExchangeType.TOPIC);
+        String queueName = "Q1";
+        channel.queueDeclare(queueName, true, false, false, null);
+
+        // 交换机与队列的绑定
+        channel.queueBind(queueName, EXCHANGE_NAME, "*.orange.*");
+        System.out.println("等待接收消息...");
+        DeliverCallback deliverCallback = (consumerTag, message) -> {
+            System.out.println(new String(message.getBody(), StandardCharsets.UTF_8));
+            System.out.println("接收队列：" + queueName + " 绑定键：" + message.getEnvelope().getRoutingKey());
+        };
+
+        channel.basicConsume(queueName, true, deliverCallback, consumerTag -> {});
+    }
+}

src/main/java/io/jiulinxiri/rabbitmq/seven/ReceiveLogsTopic02.java

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+package io.jiulinxiri.rabbitmq.seven;
+
+import com.rabbitmq.client.BuiltinExchangeType;
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.DeliverCallback;
+import io.jiulinxiri.rabbitmq.utils.RabbitMqUtils;
+
+import java.nio.charset.StandardCharsets;
+
+public class ReceiveLogsTopic02 {
+    private static final String EXCHANGE_NAME = "topic_logs";
+
+    public static void main(String[] args) throws Exception {
+        Channel channel = RabbitMqUtils.getChannel();
+        // 声明交换机类型Topic
+        channel.exchangeDeclare(EXCHANGE_NAME, BuiltinExchangeType.TOPIC);
+        String queueName = "Q2";
+        channel.queueDeclare(queueName, true, false, false, null);
+        // 交换机与队列的绑定
+        channel.queueBind(queueName, EXCHANGE_NAME, "*.*.rabbit");
+        channel.queueBind(queueName, EXCHANGE_NAME, "lazy.#");
+        System.out.println("等待接收消息...");
+        DeliverCallback deliverCallback = (consumerTag, message) -> {
+            System.out.println(new String(message.getBody(), StandardCharsets.UTF_8));
+            System.out.println("接收队列：" + queueName + " 绑定键：" + message.getEnvelope().getRoutingKey());
+        };
+
+        channel.basicConsume(queueName, true, deliverCallback, consumerTag -> {});
+    }
+}