完善 rabbitmq 用例注释

spring-boot/spring-boot-rabbitmq/rabbitmq-consumer/src/main/java/com/heibaiying/rabbitmqconsumer/consumer/RabbitmqConsumer.java

@@ -20,18 +20,18 @@ import org.springframework.stereotype.Component;
 public class RabbitmqConsumer {
 
     @RabbitListener(bindings = @QueueBinding(
-                                value = @Queue(value = RabbitInfo.QUEUE_NAME, durable = RabbitInfo.QUEUE_DURABLE),
+            value = @Queue(value = RabbitInfo.QUEUE_NAME, durable = RabbitInfo.QUEUE_DURABLE),
-                                exchange = @Exchange(value = RabbitInfo.EXCHANGE_NAME, type = RabbitInfo.EXCHANGE_TYPE),
+            exchange = @Exchange(value = RabbitInfo.EXCHANGE_NAME, type = RabbitInfo.EXCHANGE_TYPE),
-                                key = RabbitInfo.ROUTING_KEY)
+            key = RabbitInfo.ROUTING_KEY)
     )
     @RabbitHandler
     public void onMessage(Message message, Channel channel) throws Exception {
         MessageHeaders headers = message.getHeaders();
         // 获取消息头信息和消息体
-        log.info("msgInfo:{} ; payload:{} ",headers.get("msgInfo"),message.getPayload());
+        log.info("msgInfo:{} ; payload:{} ", headers.get("msgInfo"), message.getPayload());
-        // DELIVERY_TAG 是一个自增的数值
+        //  DELIVERY_TAG 代表 RabbitMQ 向该Channel投递的这条消息的唯一标识ID，是一个单调递增的正整数
         Long deliveryTag = (Long) headers.get(AmqpHeaders.DELIVERY_TAG);
-        // 第二个参数代表是否一次签收多条,当该参数为 true 时，则可以一次性确认 delivery_tag 小于等于传入值的所有消息
+        // 第二个参数代表是否一次签收多条,当该参数为 true 时，则可以一次性确认 DELIVERY_TAG 小于等于传入值的所有消息
         channel.basicAck(deliveryTag, false);
     }
 

spring-boot/spring-boot-rabbitmq/rabbitmq-consumer/src/main/resources/application.yml

@@ -1,14 +1,14 @@
 spring:
   rabbitmq:
-    addresses: 192.168.0.108:5672
+    addresses: 127.0.0.1:5672
     # RabbitMQ 默认的用户名和密码都是guest 而虚拟主机名称是 "/"
     # 如果配置其他虚拟主机地址，需要预先用管控台或者图形界面创建 图形界面地址 http://主机地址:15672
-    username: admin
+    username: guest
-    password: admin
+    password: guest
-    virtual-host: my_vhost
+    virtual-host: /
     listener:
       simple:
-        # 签收模式设置为手工签收
+        # 为了保证信息能够被正确消费,建议签收模式设置为手工签收,并在代码中实现手工签收
         acknowledge-mode: manual
         # 侦听器调用者线程的最小数量
         concurrency: 10

spring-boot/spring-boot-rabbitmq/rabbitmq-producer/src/main/java/com/heibaiying/rabbitmq/producer/RabbitmqProducer.java

@@ -1,6 +1,7 @@
 package com.heibaiying.rabbitmq.producer;
 
 import lombok.extern.slf4j.Slf4j;
+import org.apache.tomcat.util.codec.binary.Base64;
 import org.springframework.amqp.rabbit.connection.CorrelationData;
 import org.springframework.amqp.rabbit.core.RabbitTemplate;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -9,6 +10,7 @@ import org.springframework.messaging.MessageHeaders;
 import org.springframework.messaging.support.MessageBuilder;
 import org.springframework.stereotype.Component;
 
+import java.io.UnsupportedEncodingException;
 import java.util.Map;
 
 /**
@@ -22,22 +24,28 @@ public class RabbitmqProducer {
     @Autowired
     private RabbitTemplate rabbitTemplate;
 
-    public void sendSimpleMessage( Map<String, Object> headers,Object message,
+    public void sendSimpleMessage(Map<String, Object> headers, Object message,
                                   String messageId, String exchangeName, String key) {
         // 自定义消息头
         MessageHeaders messageHeaders = new MessageHeaders(headers);
         // 创建消息
         Message<Object> msg = MessageBuilder.createMessage(message, messageHeaders);
-        // 确认的回调 确认消息是否到达 Broker 服务器
+        /* 确认的回调 确认消息是否到达 Broker 服务器 其实就是是否到达交换器
+           如果发送时候指定的交换器不存在 ack就是false 代表消息不可达 */
         rabbitTemplate.setConfirmCallback((correlationData, ack, cause) -> {
-            //当ack为false时才表示消息不可达，才需要进行对应的消息补偿机制
+            log.info("correlationData：{} , ack:{}", correlationData.getId(), ack);
-            log.info("correlationData：{} , ack:{}", correlationData.getId(),ack);
+            if (!ack) {
+                System.out.println("进行对应的消息补偿机制");
+            }
         });
-        // 消息失败的回调
+        /* 消息失败的回调
+         * 例如消息已经到达交换器上，但路由键匹配任何绑定到该交换器的队列，会触发这个回调，此时 replyText: NO_ROUTE
+         */
         rabbitTemplate.setReturnCallback((message1, replyCode, replyText, exchange, routingKey) -> {
-            log.info("message:{}; replyCode{}; replyText{} ;", message1.getBody(), replyCode, replyText);
+            log.info("message:{}; replyCode: {}; replyText: {} ; exchange:{} ; routingKey:{}",
+                    message1, replyCode, replyText, exchange, routingKey);
         });
-        // 在实际中ID 应该是全局唯一 能够唯一标识消息
+        // 在实际中ID 应该是全局唯一 能够唯一标识消息 消息不可达的时候触发ConfirmCallback回调方法时可以获取该值，进行对应的错误处理
         CorrelationData correlationData = new CorrelationData(messageId);
         rabbitTemplate.convertAndSend(exchangeName, key, msg, correlationData);
     }

spring-boot/spring-boot-rabbitmq/rabbitmq-producer/src/main/resources/application.yml

@@ -1,11 +1,11 @@
 spring:
   rabbitmq:
-    addresses: 192.168.0.108:5672
+    addresses: 127.0.0.1:5672
     # RabbitMQ 默认的用户名和密码都是guest 而虚拟主机名称是 "/"
     # 如果配置其他虚拟主机地址，需要预先用管控台或者图形界面创建 图形界面地址 http://主机地址:15672
-    username: admin
+    username: guest
-    password: admin
+    password: guest
-    virtual-host: my_vhost
+    virtual-host: /
     # 是否启用发布者确认 具体确认回调实现见代码
     publisher-confirms: true
     # 是否启用发布者返回 具体返回回调实现见代码

spring-boot/spring-boot-rabbitmq/rabbitmq-producer/src/test/java/com/heibaiying/rabbitmq/RabbitmqProducerTests.java

@@ -21,6 +21,9 @@ public class RabbitmqProducerTests {
     @Autowired
     private RabbitmqProducer producer;
 
+    /***
+     * 发送消息体为简单数据类型的消息
+     */
     @Test
     public void send() {
         Map<String, Object> heads = new HashMap<>();
@@ -31,6 +34,9 @@ public class RabbitmqProducerTests {
     }
 
 
+    /***
+     * 发送消息体为bean的消息
+     */
     @Test
     public void sendBean() {
         String id = String.valueOf(Math.round(Math.random() * 10000));