Rabbitmq 根据用户数量动态创建队列

问题描述

我有一个场景，我必须将我收到的消息列表路由到各个用户。假设如果我有

org.springframework.context.support.AbstractApplicationContext     refresh

WARNING: Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'emp' defined in class path resource [beans.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'id' of bean class [com.avi.spring.firstspring.employee]: Bean property 'id' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'emp' defined in class path resource [beans.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'id' of bean class [com.avi.spring.firstspring.employee]: Bean property 'id' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
    at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.applyPropertyValues(AbstractAutowireCapablebeanfactory.java:1711)
    at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.populateBean(AbstractAutowireCapablebeanfactory.java:1426)
    at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.doCreateBean(AbstractAutowireCapablebeanfactory.java:592)
    at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.createBean(AbstractAutowireCapablebeanfactory.java:515)
    at org.springframework.beans.factory.support.Abstractbeanfactory.lambda$doGetBean$0(Abstractbeanfactory.java:320)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.Abstractbeanfactory.doGetBean(Abstractbeanfactory.java:318)
    at org.springframework.beans.factory.support.Abstractbeanfactory.getBean(Abstractbeanfactory.java:199)
    at org.springframework.beans.factory.support.DefaultListablebeanfactory.preInstantiateSingletons(DefaultListablebeanfactory.java:847)
    at org.springframework.context.support.AbstractApplicationContext.finishbeanfactoryInitialization(AbstractApplicationContext.java:877)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
    at org.springframework.context.support.ClasspathXmlApplicationContext.<init>(ClasspathXmlApplicationContext.java:144)
    at org.springframework.context.support.ClasspathXmlApplicationContext.<init>(ClasspathXmlApplicationContext.java:85)
    at com.avi.spring.firstspring.test.main(test.java:9)
Caused by: org.springframework.beans.NotWritablePropertyException: Invalid property 'id' of bean class [com.avi.spring.firstspring.employee]: Bean property 'id' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
    at org.springframework.beans.BeanWrapperImpl.createNotWritablePropertyException(BeanWrapperImpl.java:243)
    at org.springframework.beans.AbstractnestablePropertyAccessor.processLocalProperty(AbstractnestablePropertyAccessor.java:426)
    at org.springframework.beans.AbstractnestablePropertyAccessor.setPropertyValue(AbstractnestablePropertyAccessor.java:278)
    at org.springframework.beans.AbstractnestablePropertyAccessor.setPropertyValue(AbstractnestablePropertyAccessor.java:266)
    at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:97)
    at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:77)
    at org.springframework.beans.factory.support.AbstractAutowireCapablebeanfactory.applyPropertyValues(AbstractAutowireCapablebeanfactory.java:1707)
    ... 13 more

producer.js

messages = [
  { text: 'hi',user_id: 1 },{ text: 'hi',user_id: 2 },user_id: 3 },user_id: 4 },user_id: 5 },];

consumer.js

var amqp = require('amqplib/callback_api');

amqp.connect('amqps://dgszsgqj:C_wg8fkFrcl6ukZjxBjCcpgc_Pa2j-r9@snake.rmq2.cloudamqp.com/dgszsgqj',function(error0,connection) {
  if (error0) {
    throw error0;
  }
  connection.createChannel(function(error1,channel) {
    if (error1) {
      throw error1;
    }
    var exchange = 'messages';
  
    channel.assertExchange(exchange,'direct',{
      durable: false
    });
    messages = [
      { text: 'hi',];
    messages.map(message=>{
      channel.publish(exchange,message.user_id+'',message.text);
    })
  });
});

我在博客中读到动态创建队列是一种反模式。 https://derickbailey.com/2015/09/02/rabbitmq-best-practices-for-designing-exchanges-queues-and-bindings/

我也尝试在生产者端创建队列，这是创建队列，但无法使用来自该队列的消息，因为我在使用它时不知道队列的名称。

我该如何有效地处理这种情况？

解决方法

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