Hot questions for Using RabbitMQ in maven

Question:

I am trying to run the sample project from Create a RabbitMQ message receiver.But it's throwing exception

java.lang.IllegalArgumentException: Attribute 'exclude' is of type [Class[]], but [String[]] was expected. Cause: 
    at org.springframework.core.annotation.AnnotationAttributes.doGet(AnnotationAttributes.java:117)
    at org.springframework.core.annotation.AnnotationAttributes.getStringArray(AnnotationAttributes.java:70)
    at org.springframework.boot.autoconfigure.EnableAutoConfigurationImportSelector.selectImports(EnableAutoConfigurationImportSelector.java:63)
    at org.springframework.context.annotation.ConfigurationClassParser.processImport(ConfigurationClassParser.java:386)
    at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:204)
    at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:163)
    at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:138)
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:284)
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:225)
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:630)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:461)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:683)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:313)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:944)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:933)
    at Application.main(Application.java:69)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)

Here is my pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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>org.springframework</groupId>
        <artifactId>gs-messaging-rabbitmq</artifactId>
        <version>0.1.0</version>

        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.2.3.RELEASE</version>
        </parent>

        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>

        <repositories>
            <repository>
                <id>spring-releases</id>
                <name>Spring Releases</name>
                <url>https://repo.spring.io/libs-release</url>
            </repository>
        </repositories>
        <pluginRepositories>
            <pluginRepository>
                <id>spring-releases</id>
                <name>Spring Releases</name>
                <url>https://repo.spring.io/libs-release</url>
            </pluginRepository>
        </pluginRepositories>
</project>

Here is my class file

@SpringBootApplication
public class Application implements CommandLineRunner {

    final static String queueName = "spring-boot";

    @Autowired
    AnnotationConfigApplicationContext context;

    @Autowired
    RabbitTemplate rabbitTemplate;

    @Bean
    Queue queue() {
        return new Queue(queueName, false);
    }

    @Bean
    TopicExchange exchange() {
        return new TopicExchange("spring-boot-exchange");
    }

    @Bean
    Binding binding(Queue queue, TopicExchange exchange) {
        return BindingBuilder.bind(queue).to(exchange).with(queueName);
    }

    @Bean
    SimpleMessageListenerContainer container(ConnectionFactory connectionFactory, MessageListenerAdapter listenerAdapter) {
        SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        container.setQueueNames(queueName);
        container.setMessageListener(listenerAdapter);
        return container;
    }

    @Bean
    Receiver receiver() {
        return new Receiver();
    }

    @Bean
    MessageListenerAdapter listenerAdapter(Receiver receiver) {
        return new MessageListenerAdapter(receiver, "receiveMessage");
    }

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

    @Override
    public void run(String... args) throws Exception {
        System.out.println("Waiting five seconds...");
        Thread.sleep(5000);
        System.out.println("Sending message...");
        rabbitTemplate.convertAndSend(queueName, "Hello from RabbitMQ!");
        receiver().getLatch().await(10000, TimeUnit.MILLISECONDS);
        context.close();
    }
}

Can anyone tell me what's wrong with me?Thanks in advance.


Answer:

There was the problem with my IDE. I just reimport all the maven dependency and able to solved it.Thanks to Nicolsas and Andy

Question:

I'm trying to connect to RabbitMQ in Java with InteliJ IDEA (Maven 3.3.9), but an error occurs when doing the required step (creating ConnectionFactory object before connecting to RabbitMQ).

For detailed information: Maven itself installs amqp-client:5.7.2 and org.slf4j-api:1.7.26.

What am I missing here? I tried to import org.slf4j.impl.StaticLoggerBinder, but Java itself doesn't know this one.

package TestPackage;

import Configuration.RabbitMQConf;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.ConnectionFactory;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.util.concurrent.TimeoutException;

public class TestingClass {
    static ConnectionFactory rbmqFactory;
    static Connection rbmqConn;
    static Channel rbmqChannel;

    public static void main(String[] args){
        RabbitMQConf rbmqConf = new RabbitMQConf();


        rbmqFactory = new ConnectionFactory();
        rbmqFactory.setUsername(rbmqConf.username);
        rbmqFactory.setPassword(rbmqConf.password);
        rbmqFactory.setVirtualHost(rbmqConf.virtualHost);
        rbmqFactory.setHost(rbmqConf.host);
        rbmqFactory.setPort(rbmqConf.port);
    }
}

I tried to run this and got this error:

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

here's my pom.xml file :

<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>XXXX</groupId>
  <artifactId>XXXX</artifactId>
  <version>1.0-XXXX</version>

  <properties>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>com.rabbitmq</groupId>
      <artifactId>amqp-client</artifactId>
      <version>5.7.2</version>
    </dependency>
  </dependencies>
</project>

Answer:

The link in the error pretty much explains what's the problem and how to fix it. You just need to add one of the logging implementations to the dependencies in pom.xml.

This warning message is reported when the org.slf4j.impl.StaticLoggerBinder class could not be loaded into memory. This happens when no appropriate SLF4J binding could be found on the class path. Placing one (and only one) of slf4j-nop.jar slf4j-simple.jar, slf4j-log4j12.jar, slf4j-jdk14.jar or logback-classic.jar on the class path should solve the problem.

<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
    <version>1.2.3</version>
</dependency>

Question:

I have a basic Spring Boot web project and I am using Spring Tool Suite. I am trying to implement a basic messaging with RabbitMQ, but I am not able to import RabbitListener annotation. I get error message in IDE RabbitListener is not an annotation type.

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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>jms.client</groupId>
    <artifactId>msgClient</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>activemqSndClient</name>
    <description>Spring-Boot activemq client </description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

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

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jms</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.integration</groupId>
            <artifactId>spring-integration-jms</artifactId>
        </dependency>

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

        <!-- https://mvnrepository.com/artifact/org.apache.activemq/activemq-all -->
        <dependency>
            <groupId>org.apache.activemq</groupId>
            <artifactId>activemq-all</artifactId>
            <version>5.14.2</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

When I try to import RabbitListener class, I see error message The import org.springframework.amqp.rabbit.annotation.RabbitListener conflicts with a type defined in the same file, but I can see this class in maven dependencies.


Answer:

Your class is named RabbitListener so it takes precendece to whatever you've imported. Rename it to something else and you'll be fine.