标签:rest start mod new throw work charset config 发送消息
在默认的虚拟主机(virtual-host)/
下,创建一个名为test
的Topic
类型的交换机(exchange),并设置其属性为不持久化(durable)、不自动删除(autoDelete)。
同时创建了一个名为hello
的队列(Queue),并且设置不持久化(durable)、不排外的(exclusive)、不自动删除(autoDelete)。
将这个Queue
与exchange
绑定(binding)起来。并同时指定一个routingKey
。这个key的作用就是让流进Exchange的消息流进指定的Queue。topic类型的exchange使用全名routingKey的话,就相当于点对点的发送接收了(初步认识rabbit mq感觉是这样子,后续继续深入学习时,发现这个观点不对的话,会改正的)。
Maven pom文件里添加坐标。
<!-- Rabbit MQ 依赖-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
application.yml
文件里配置一些参数# spring配置
spring:
rabbitmq:
host: 10.0.43.27
port: 5673
username: guest
password: guest
virtual-host: /
# 这里配置消费者接收消息后,需要进行 ack 确认,这个消息才算被消费掉
listener:
simple:
acknowledge-mode: manual
package com.unidata.cloud.logservice.manager.config;
import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
*
* @author demo@demo.com
* @date 2019/11/19 15:21
*/
@Configuration
public class RabbitmqConfig {
@Bean
public Queue helloQueue() {
return new Queue("hello",false,false,false);
}
@Bean
public TopicExchange exchange(){
return new TopicExchange("test", false, false);
}
@Bean
public Binding bind(Queue queue,TopicExchange exchange){
return BindingBuilder.bind(queue).to(exchange).with("demo_key");
}
}
package com.unidata.cloud.logservice.manager.rabbitmq;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.AmqpTemplate;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @author demo@demo.com
* @date 2019/11/19 17:51
*/
@RestController
@Slf4j
@AllArgsConstructor
public class ProduceController {
private AmqpTemplate rabbitTemplate;
@RequestMapping(value = "/send")
public String sendMsg(String msg){
rabbitTemplate.convertAndSend("hello", "{\"name\":\"demo01\"}");
return "ok";
}
}
package com.unidata.cloud.logservice.manager.rabbitmq;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.rabbitmq.client.Channel;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
/**
* @author demo@demo.com
* @date 2019/11/19 17:52
*/
@Component
@Slf4j
public class ReceiveListener {
@Autowired
RabbitTemplate template;
@RabbitHandler
@RabbitListener(queues = "hello")
public void processMsg(Message message, Channel channel) throws IOException {
try {
byte[] body = message.getBody();
String result = new String(body, StandardCharsets.UTF_8);
JSONObject jsonObject = JSON.parseObject(result);
System.out.println(jsonObject);
// you can do something here.
// 进行消费确认
channel.basicAck(message.getMessageProperties().getDeliveryTag(), false);
log.info("消息消费成功");
} catch (Exception e) {
channel.basicReject(message.getMessageProperties().getDeliveryTag(), false);
log.error(e.getLocalizedMessage());
}
}
}
上边六个步骤,进行了一个简单的,生产者消息发送,消费者消息消费的过程。
当运行这个项目时,会根据RabbitmqConfig
类里的配置信息自动创建出 exchange 和 queue 。
题外:
标签:rest start mod new throw work charset config 发送消息
原文地址:https://www.cnblogs.com/kjgym/p/11900792.html