java - 使用 Spring Boot 和 ApacheMQ 发送和使用消息时出现运行时错误

Question

M 使用 Spring Boot 和 ActiveMQ 来发送和接收消息。请帮忙
我的 MAVEN 项目中有 3 个类

    1. SampleActiveMQApplication 

    package hello;

    import javax.jms.Queue;

    import org.apache.activemq.command.ActiveMQQueue;

    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.context.annotation.Bean;
    import org.springframework.jms.annotation.EnableJms;

    @SpringBootApplication
    @EnableJms
    public class SampleActiveMQApplication {

        @Bean
        public Queue queue() 
        {
            return new ActiveMQQueue("welcome.queue");
        }

        public static void main(String[] args) {
            SpringApplication.run(SampleActiveMQApplication.class, args);
        }

    }

M 使用 Spring Boot 和 ActiveMQ 来发送和接收消息。请帮忙
我的 MAVEN 项目中有 3 个类

    2.  Consumer

    package hello;


    import org.springframework.jms.annotation.JmsListener;
    import org.springframework.stereotype.Component;

    @Component
    public class Consumer {

        @JmsListener(destination = "welcome.queue")
        public void receiveQueue(String text) {
            System.out.println(text);
        }

    }

M 使用 Spring Boot 和 ActiveMQ 来发送和接收消息。请帮忙
我的 MAVEN 项目中有 3 个类

    3. Producer

    package hello;


    import javax.jms.Queue;

    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.CommandLineRunner;
    import org.springframework.jms.core.JmsMessagingTemplate;
    import org.springframework.stereotype.Component;

    @Component
    public class Producer implements CommandLineRunner {

        @Autowired
        private JmsMessagingTemplate jmsMessagingTemplate;

        @Autowired
        private Queue queue;

        public void run(String... args) throws Exception {
            send("Sample message");
            System.out.println("Message was sent to the Queue");
        }

        public void send(String msg) {
            this.jmsMessagingTemplate.convertAndSend(this.queue, msg);
        }

    }

M 收到错误 java.lang.NoClassDefFoundError: org/springframework/context/event/GenericApplicationListener 类未找到错误

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>ApacheMQBoot</groupId>
  <artifactId>ApacheMQBoot</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <properties>    
    <!-- Spring version -->
    <spring-framework.version>4.1.0.RELEASE</spring-framework.version>    
    <!-- ActiveMQ version -->
    <activemq.version>5.10.0</activemq.version>
  </properties>


    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.3.2.RELEASE</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>


    <!-- Spring aritifacts -->

 <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>3.2.2.RELEASE</version>
</dependency>

    <!-- <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring-framework.version}</version>
    </dependency> -->


    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jms</artifactId>
      <version>${spring-framework.version}</version>
    </dependency>  

    <!-- ActiveMQ Artifacts -->
    <dependency>
      <groupId>org.apache.activemq</groupId>
      <artifactId>activemq-spring</artifactId>
      <version>${activemq.version}</version>
    </dependency>
  </dependencies> 

  <!-- Using JDK 1.7 for compiling -->
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>2.5.1</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

我得到的错误是dis

////

Exception in thread "main" java.lang.IllegalArgumentException: Cannot instantiate interface org.springframework.context.ApplicationListener : org.springframework.boot.logging.ClasspathLoggingApplicationListener
            at org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:414)
            at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:394)
            at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:385)
            at org.springframework.boot.SpringApplication.initialize(SpringApplication.java:263)
            at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:237)
            at org.springframework.boot.SpringApplication.run(SpringApplication.java:1191)
            at org.springframework.boot.SpringApplication.run(SpringApplication.java:1180)
            at hello.SampleActiveMQApplication.main(SampleActiveMQApplication.java:22)
        Caused by: java.lang.NoClassDefFoundError: org/springframework/context/event/GenericApplicationListener
            at java.lang.ClassLoader.defineClass1(Native Method)
            at java.lang.ClassLoader.defineClass(Unknown Source)
            at java.security.SecureClassLoader.defineClass(Unknown Source)
            at java.net.URLClassLoader.defineClass(Unknown Source)
            at java.net.URLClassLoader.access$100(Unknown Source)
            at java.net.URLClassLoader$1.run(Unknown Source)
            at java.net.URLClassLoader$1.run(Unknown Source)
            at java.security.AccessController.doPrivileged(Native Method)
            at java.net.URLClassLoader.findClass(Unknown Source)
            at java.lang.ClassLoader.loadClass(Unknown Source)
            at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
            at java.lang.ClassLoader.loadClass(Unknown Source)
            at org.springframework.util.ClassUtils.forName(ClassUtils.java:250)
            at org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:407)
            ... 7 more
        Caused by: java.lang.ClassNotFoundException: **org.springframework.context.event.GenericApplicationListener**
            at java.net.URLClassLoader.findClass(Unknown Source)
            at java.lang.ClassLoader.loadClass(Unknown Source)
            at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
            at java.lang.ClassLoader.loadClass(Unknown Source)
            ... 21 more

Answer 1

类/接口(interface) org.springframework.context.event.GenericApplicationListener 从 spring 4.2 开始可用。您必须更改为较新版本的 spring。

请参阅javadoc