如何使用 JmsTemplate 提供手动确认并从 Rabbitmq 队列中删除消息 [英] How to Give manual Acknowledge using JmsTemplate and delete message from Rabbitmq queue

问题描述

我正在使用带有 jmsTemplate 的 RabbitMq(带 JMS)我能够从 RabbitMq 队列中使用消息，但它需要自动确认.

我有它的搜索 API，但无法找到它.

如何设置手动确认.

在下面的代码中，当从队列中使用消息时，我想使用该消息调用 Web 服务，并取决于来自我想从队列中删除该消息的响应.我创建了一个项目，其中我正在使用侦听器和其他项目调用从队列中读取消息

第一个项目:

包com.es.jms.listener；导入 javax.jms.ConnectionFactory；导入 javax.jms.JMSException；导入 javax.jms.Message；导入 javax.jms.MessageListener；导入 javax.jms.TextMessage；导入 org.springframework.context.annotation.Bean；导入 org.springframework.context.annotation.Configuration；导入 org.springframework.jms.listener.MessageListenerContainer；导入 org.springframework.jms.listener.SimpleMessageListenerContainer；导入 com.rabbitmq.jms.admin.RMQConnectionFactory；@配置公共类 RabbitMqMessageListener {@豆角，扁豆公共连接工厂 jmsConnectionFactory() {RMQConnectionFactory connectionFactory = new RMQConnectionFactory();connectionFactory.setUsername("用户名");connectionFactory.setPassword("密码");connectionFactory.setVirtualHost("vhostname");connectionFactory.setHost("主机名");返回连接工厂；}@豆角，扁豆公共消息侦听器 msgListener() {返回新的 MessageListener() {公共无效onMessage(消息消息){System.out.println(message.toString());if (message instanceof TextMessage) {尝试 {String msg = ((TextMessage) message).getText();System.out.println("收到消息:" + msg);//这里调用web service，依赖web service//回复//如果 200 则从队列中删除味精，否则保留味精//队列} 捕捉(JMSException ex){抛出新的 RuntimeException(ex);}}}};}@豆角，扁豆公共 MessageListenerContainer messageListenerContainer() {SimpleMessageListenerContainer 容器 = new SimpleMessageListenerContainer();container.setConnectionFactory(jmsConnectionFactory());container.setDestinationName("test");container.setMessageListener(msgListener());返回容器；}}

第二个项目:

包com.rabbitmq.jms.consumer.controller；导入 java.util.concurrent.ExecutionException；导入 java.util.concurrent.TimeoutException；导入 javax.jms.ConnectionFactory；导入 org.json.JSONException；导入 org.json.JSONObject；导入 org.springframework.beans.factory.annotation.Autowired；导入 org.springframework.context.annotation.Bean；导入 org.springframework.http.HttpStatus；导入 org.springframework.http.ResponseEntity；导入 org.springframework.jms.JmsException；导入 org.springframework.jms.core.JmsTemplate；导入 org.springframework.stereotype.Controller；导入 org.springframework.web.bind.annotation.CrossOrigin；导入 org.springframework.web.bind.annotation.RequestMapping；导入 org.springframework.web.bind.annotation.RequestMethod；导入 org.springframework.web.bind.annotation.ResponseBody；导入 com.rabbitmq.jms.admin.RMQConnectionFactory；导入 redis.clients.jedis.Jedis；@控制器公共类接收控制器 {@自动连线jms模板 jms模板；@豆角，扁豆公共连接工厂 jmsConnectionFactory() {RMQConnectionFactory connectionFactory = new RMQConnectionFactory();connectionFactory.setUsername("用户名");connectionFactory.setPassword("密码");connectionFactory.setVirtualHost("vhostname");connectionFactory.setHost("主机名");返回连接工厂；}@CrossOrigin@SuppressWarnings({ "未选中", "rawtypes" })@RequestMapping(method = RequestMethod.GET, value = "/getdata")@ResponseBody公共响应实体<字符串>fecthDataFromRedis()抛出 JSONException、InterruptedException、JmsException、ExecutionException、TimeoutException {System.out.println("在控制器中");jmsTemplate.setReceiveTimeout(500L);//jms模板.String message = (String) jmsTemplate.receiveAndConvert("test");//这里调用web service，依赖web service//回复//如果 200 则从队列中删除味精，否则保留味精//队列System.out.println(消息);}返回新的响应实体(消息，HttpStatus.OK)；}}

我该怎么做?

提前致谢.

解决方案

你不是在使用 JmsTemplate，你是在使用 SimpleMessageListenerContainer 来接收消息.p>

如果您正在使用模板，则必须将 execute 方法与 SessionCallback 一起使用，因为确认必须发生在范围内收到消息的会话.

但是，使用 SimpleMessageListenerContainer，您只需将 sessionAcknowledgeMode 设置为 Session.CLIENT_ACKNOWLEDGE.查看容器 javadocs...

/*** 使用普通 JMS 客户端 API 的消息侦听器容器* {@code MessageConsumer.setMessageListener()} 方法* 为指定的侦听器创建并发 MessageConsumers.** <p>这是消息侦听器容器的最简单形式.* 它创建固定数量的 JMS 会话来调用侦听器，* 不允许动态适应运行时需求.它的主要* 优点是其复杂程度低且要求最低* 关于 JMS 提供者:甚至不需要 ServerSessionPool 工具.** <p>详情请参阅 {@link AbstractMessageListenerContainer} javadoc* 关于确认模式和交易选项.注意这个容器* 公开默认AUTO_ACKNOWLEDGE"模式的标准 JMS 行为:* 即监听器执行后自动消息确认，* 在抛出用户异常但可能发生的情况下不重新传递* 在侦听器执行期间 JVM 死机的情况下重新交付.** <p>对于不同风格的 MessageListener 处理，通过循环* {@code MessageConsumer.receive()} 调用也允许* 消息的事务接收(使用 XA 事务注册它们)，* 见 {@link DefaultMessageListenerContainer}....

编辑

使用 JmsTemplate 时，您必须在会话范围内完成工作 - 方法如下...

首先，您必须在模板中启用客户端确认...

this.jmsTemplate.setSessionAcknowledgeMode(Session.CLIENT_ACKNOWLEDGE);

然后，使用 execute 方法和 SessionCallback ...

布尔结果 = this.jmsTemplate.execute(session -> {MessageConsumer 消费者 = session.createConsumer(this.jmsTemplate.getDestinationResolver().resolveDestinationName(session, "bar", false));字符串结果 = null;尝试 {收到的消息 = consumer.receive(5000);如果(收到！= null){结果 = (String) this.jmsTemplate.getMessageConverter().fromMessage(received);//在这里做一些事情.收到.确认()；返回真；}}捕获(异常 e){返回假；}最后 {消费者.close();}}， 真的);

I am using RabbitMq(with JMS) with jmsTemplate I am able to Consume Message from RabbitMq Queue But it is taking acknowledgment AUTO.

I have Search API for it but not able to find it out.

How can I set manual acknowledgment.

In Below code when Message is consumed from queue I want to call web service with that message and depends on that response from from I want to delete that message from queue. I have created one project in which I am using Listener and other project with call to read message from queue

first Project:

package com.es.jms.listener;

import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jms.listener.MessageListenerContainer;
import org.springframework.jms.listener.SimpleMessageListenerContainer;

import com.rabbitmq.jms.admin.RMQConnectionFactory;

@Configuration
public class RabbitMqMessageListener {

    @Bean
    public ConnectionFactory jmsConnectionFactory() {
        RMQConnectionFactory connectionFactory = new RMQConnectionFactory();
        connectionFactory.setUsername("Username");
        connectionFactory.setPassword("Password");
        connectionFactory.setVirtualHost("vhostname");
        connectionFactory.setHost("hostname");

        return connectionFactory;
    }

    @Bean
    public MessageListener msgListener() {
        return new MessageListener() {
            public void onMessage(Message message) {

                System.out.println(message.toString());
                if (message instanceof TextMessage) {
                    try {
                        String msg = ((TextMessage) message).getText();
                        System.out.println("Received message: " + msg);

                        // call web service here and depends on web service
                        // response
                        // if 200 then delete msg from queue else keep msg in
                        // queue

                    } catch (JMSException ex) {
                        throw new RuntimeException(ex);
                    }
                }

            }
        };
    }

    @Bean
    public MessageListenerContainer messageListenerContainer() {
        SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();
        container.setConnectionFactory(jmsConnectionFactory());
        container.setDestinationName("test");

        container.setMessageListener(msgListener());
        return container;

    }
}

2nd Project:

package com.rabbitmq.jms.consumer.controller;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeoutException;

import javax.jms.ConnectionFactory;

import org.json.JSONException;
import org.json.JSONObject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.jms.JmsException;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;


import com.rabbitmq.jms.admin.RMQConnectionFactory;

import redis.clients.jedis.Jedis;

@Controller
public class ReceiverController {
    @Autowired
    JmsTemplate jmsTemplate;


    @Bean
    public ConnectionFactory jmsConnectionFactory() {
        RMQConnectionFactory connectionFactory = new RMQConnectionFactory();
        connectionFactory.setUsername("Username");
        connectionFactory.setPassword("Password");
        connectionFactory.setVirtualHost("vhostname");
        connectionFactory.setHost("hostname");

        return connectionFactory;
    }

    @CrossOrigin
    @SuppressWarnings({ "unchecked", "rawtypes" })
    @RequestMapping(method = RequestMethod.GET, value = "/getdata")
    @ResponseBody
    public ResponseEntity<String> fecthDataFromRedis()
            throws JSONException, InterruptedException, JmsException, ExecutionException, TimeoutException {
        System.out.println("in controller");

        jmsTemplate.setReceiveTimeout(500L);
        // jmsTemplate.
        String message = (String) jmsTemplate.receiveAndConvert("test");

                    // call web service here and depends on web service
                    // response
                    // if 200 then delete msg from queue else keep msg in
                    // queue
        System.out.println(message);

        }

        return new ResponseEntity(message , HttpStatus.OK);

    }

}

How Can I do That?

Thanks In Advance.

解决方案

You are not using a JmsTemplate, you are using a SimpleMessageListenerContainer to receive the message.

If you were using the template, you would have to use the execute method with a SessionCallback since the acknowledgement must occur within the scope of the session within which the message was received.

However, with the SimpleMessageListenerContainer, you simply set the sessionAcknowledgeMode to Session.CLIENT_ACKNOWLEDGE. See the container javadocs...

/**
 * Message listener container that uses the plain JMS client API's
 * {@code MessageConsumer.setMessageListener()} method to
 * create concurrent MessageConsumers for the specified listeners.
 *
 * <p>This is the simplest form of a message listener container.
 * It creates a fixed number of JMS Sessions to invoke the listener,
 * not allowing for dynamic adaptation to runtime demands. Its main
 * advantage is its low level of complexity and the minimum requirements
 * on the JMS provider: Not even the ServerSessionPool facility is required.
 *
 * <p>See the {@link AbstractMessageListenerContainer} javadoc for details
 * on acknowledge modes and transaction options. Note that this container
 * exposes standard JMS behavior for the default "AUTO_ACKNOWLEDGE" mode:
 * that is, automatic message acknowledgment after listener execution,
 * with no redelivery in case of a user exception thrown but potential
 * redelivery in case of the JVM dying during listener execution.
 *
 * <p>For a different style of MessageListener handling, through looped
 * {@code MessageConsumer.receive()} calls that also allow for
 * transactional reception of messages (registering them with XA transactions),
 * see {@link DefaultMessageListenerContainer}.
   ...

EDIT

When using the JmsTemplate, you must do your work within the scope of the session - here's how...

First, you have to enable client acknowledge in your template...

this.jmsTemplate.setSessionAcknowledgeMode(Session.CLIENT_ACKNOWLEDGE);

Then, use the execute method with a SessionCallback ...

Boolean result = this.jmsTemplate.execute(session -> {
    MessageConsumer consumer = session.createConsumer(
            this.jmsTemplate.getDestinationResolver().resolveDestinationName(session, "bar", false));
    String result = null;
    try {
        Message received = consumer.receive(5000);
        if (received != null) {
            result = (String) this.jmsTemplate.getMessageConverter().fromMessage(received);

            // Do some stuff here.

            received.acknowledge();
            return true;
        }
    }
    catch (Exception e) {
        return false;
    }
    finally {
        consumer.close();
    }
}, true);

这篇关于如何使用 JmsTemplate 提供手动确认并从 Rabbitmq 队列中删除消息的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！