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Chapter 5. Examples

This chapter demonstrates the use of AMQ JMS Pool through example programs.

5.1. Prerequisites
링크 복사

To build the examples, Maven must be configured to use the Red Hat repository or a local repository.
To run the examples, your system must have a running and configured broker.

5.2. Establishing a connection
링크 복사

This example creates a new connection pool, binds it to a connection factory, and uses the pool to create a new connection.

Example: Establishing a connection - Connect.java

package net.example;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import org.apache.qpid.jms.JmsConnectionFactory;
import org.messaginghub.pooled.jms.JmsPoolConnectionFactory;

public class Connect {
    public static void main(String[] args) throws Exception {
        if (args.length != 1) {
            System.err.println("Usage: Connect <connection-uri>");
            System.exit(1);
        }

        String connUri = args[0];

        ConnectionFactory factory = new JmsConnectionFactory(connUri);
        JmsPoolConnectionFactory pool = new JmsPoolConnectionFactory();

        try {
            pool.setConnectionFactory(factory);

            Connection conn = pool.createConnection();

            conn.start();

            try {
                System.out.println("CONNECT: Connected to '" + connUri + "'");
            } finally {
                conn.close();
            }
        } finally {
            pool.stop();
        }
    }
}

package net.example;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import org.apache.qpid.jms.JmsConnectionFactory;
import org.messaginghub.pooled.jms.JmsPoolConnectionFactory;

public class Connect {
    public static void main(String[] args) throws Exception {
        if (args.length != 1) {
            System.err.println("Usage: Connect <connection-uri>");
            System.exit(1);
        }

        String connUri = args[0];

        ConnectionFactory factory = new JmsConnectionFactory(connUri);
        JmsPoolConnectionFactory pool = new JmsPoolConnectionFactory();

        try {
            pool.setConnectionFactory(factory);

            Connection conn = pool.createConnection();

            conn.start();

            try {
                System.out.println("CONNECT: Connected to '" + connUri + "'");
            } finally {
                conn.close();
            }
        } finally {
            pool.stop();
        }
    }
}

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5.3. Configuring the pool
링크 복사

This example demonstrates setting connection and session configuration options.

Example: Configuring the pool - ConnectWithConfiguration.java

package net.example;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import org.apache.qpid.jms.JmsConnectionFactory;
import org.messaginghub.pooled.jms.JmsPoolConnectionFactory;

public class ConnectWithConfiguration {
    public static void main(String[] args) throws Exception {
        if (args.length != 1) {
            System.err.println("Usage: ConnectWithConfiguration <connection-uri>");
            System.exit(1);
        }

        String connUri = args[0];

        ConnectionFactory factory = new JmsConnectionFactory(connUri);
        JmsPoolConnectionFactory pool = new JmsPoolConnectionFactory();

        try {
            pool.setConnectionFactory(factory);

            // Set the max connections per user to a higher value
            pool.setMaxConnections(5);

            // Create a MessageProducer for each createProducer() call
            pool.setUseAnonymousProducers(false);

            Connection conn = pool.createConnection();

            conn.start();

            try {
                System.out.println("CONNECT: Connected to '" + connUri + "'");
            } finally {
                conn.close();
            }
        } finally {
            pool.stop();
        }
    }
}

package net.example;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import org.apache.qpid.jms.JmsConnectionFactory;
import org.messaginghub.pooled.jms.JmsPoolConnectionFactory;

public class ConnectWithConfiguration {
    public static void main(String[] args) throws Exception {
        if (args.length != 1) {
            System.err.println("Usage: ConnectWithConfiguration <connection-uri>");
            System.exit(1);
        }

        String connUri = args[0];

        ConnectionFactory factory = new JmsConnectionFactory(connUri);
        JmsPoolConnectionFactory pool = new JmsPoolConnectionFactory();

        try {
            pool.setConnectionFactory(factory);

            // Set the max connections per user to a higher value
            pool.setMaxConnections(5);

            // Create a MessageProducer for each createProducer() call
            pool.setUseAnonymousProducers(false);

            Connection conn = pool.createConnection();

            conn.start();

            try {
                System.out.println("CONNECT: Connected to '" + connUri + "'");
            } finally {
                conn.close();
            }
        } finally {
            pool.stop();
        }
    }
}

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5.4. Running the examples
링크 복사

To compile and run the example programs, use the following procedure.

Procedure

Create a new project directory. This is referred to as <project-dir> in the steps that follow.

Copy the example Java listings to the following locations:

<project-dir>/src/main/java/net/example/Connect.java
<project-dir>/src/main/java/net/example/ConnectWithConfiguration.java

<project-dir>/src/main/java/net/example/Connect.java
<project-dir>/src/main/java/net/example/ConnectWithConfiguration.java

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Use a text editor to create a new <project-dir>/pom.xml file. Add the following XML to it:

<project>
  <modelVersion>4.0.0</modelVersion>

  <groupId>net.example</groupId>
  <artifactId>example</artifactId>
  <version>1.0.0-SNAPSHOT</version>

  <dependencies>
    <dependency>
      <groupId>org.messaginghub</groupId>
      <artifactId>pooled-jms</artifactId>
      <version>1.0.4.redhat-00004</version>
    </dependency>
    <dependency>
      <groupId>org.apache.qpid</groupId>
      <artifactId>qpid-jms-client</artifactId>
      <version>0.42.0.redhat-00002</version>
    </dependency>
  </dependencies>
</project>

<project>
  <modelVersion>4.0.0</modelVersion>

  <groupId>net.example</groupId>
  <artifactId>example</artifactId>
  <version>1.0.0-SNAPSHOT</version>

  <dependencies>
    <dependency>
      <groupId>org.messaginghub</groupId>
      <artifactId>pooled-jms</artifactId>
      <version>1.0.4.redhat-00004</version>
    </dependency>
    <dependency>
      <groupId>org.apache.qpid</groupId>
      <artifactId>qpid-jms-client</artifactId>
      <version>0.42.0.redhat-00002</version>
    </dependency>
  </dependencies>
</project>

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Change to the project directory and use the mvn command to compile the program.
```
mvn clean package dependency:copy-dependencies -DincludeScope=runtime -DskipTests
```
```
mvn clean package dependency:copy-dependencies -DincludeScope=runtime -DskipTests
```
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The addition of dependency:copy-dependencies results in the dependencies being copied into the target/dependency directory.

Use the java command to run the program.

On Linux or UNIX:

java -cp "target/classes:target/dependency/*" net.example.Connect amqp://localhost

java -cp "target/classes:target/dependency/*" net.example.Connect amqp://localhost

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On Windows:

java -cp "target\classes;target\dependency\*" net.example.Connect amqp://localhost

java -cp "target\classes;target\dependency\*" net.example.Connect amqp://localhost

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These sample commands run the Connect example. To run another example, replace Connect with the class name of your desired example.

Running the Connect example on Linux results in the following output:

java -cp "target/classes:target/dependency/*" net.example.Connect amqp://localhost

$ java -cp "target/classes:target/dependency/*" net.example.Connect amqp://localhost
CONNECT: Connected to 'amqp://localhost'

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이 콘텐츠는 선택한 언어로 제공되지 않습니다.

Chapter 5. Examples

5.1. Prerequisites
링크 복사

5.2. Establishing a connection
링크 복사

5.3. Configuring the pool
링크 복사

5.4. Running the examples
링크 복사

자세한 정보

평가판, 구매 및 판매

커뮤니티

Red Hat 문서 정보

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Red Hat legal and privacy links

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이 콘텐츠는 선택한 언어로 제공되지 않습니다.

Chapter 5. Examples

5.1. Prerequisites링크 복사링크가 클립보드에 복사되었습니다!

5.2. Establishing a connection링크 복사링크가 클립보드에 복사되었습니다!

5.3. Configuring the pool링크 복사링크가 클립보드에 복사되었습니다!

5.4. Running the examples링크 복사링크가 클립보드에 복사되었습니다!

자세한 정보

평가판, 구매 및 판매

커뮤니티

Red Hat 문서 정보

보다 포괄적 수용을 위한 오픈 소스 용어 교체

Red Hat 소개

Theme

Red Hat legal and privacy links

Red Hat legal and privacy links

5.1. Prerequisites
링크 복사

5.2. Establishing a connection
링크 복사

5.3. Configuring the pool
링크 복사

5.4. Running the examples
링크 복사