Introducing Spring Framework

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Chapter 11 ■ Integrating Your Spring Application with External Systems @Component("rabbitmqProducer") public class RabbitMQProducer { @Autowired private RabbitTemplate rabbitTemplate; } public void send(Document document){ MessageProperties messageProperties = new MessageProperties(); messageProperties.setContentType("text/xml"); byte[] body = XmlUtils.toXML(document).getBytes(); Message message = new Message(body, messageProperties); rabbitTemplate.send(message); } Listing 11-10 shows the producer; here you are using the org.springframework.amqp.rabbit.core. RabbitTemplate class (provided by the Spring Rabbit module) that allows you to send messages through the AMQP to the RabbitMQ broker. Also, you are creating an instance of the org.springframework.amqp.core.Message class, a Message class that takes two parameters. The first parameter is the body of the message; in this case the Document object is converted into an array of bytes by using the XmlUtil class (see Listing 11-3). The second parameter will be a MessageProperties instance that only indicates that the message will be in XML. Then you send the message by calling the rabbitTemplate.send method. Listing 11-11 shows the XML configuration and the use of the namespace to declare some of the elements needed to connect to the RabbitMQ broker. This is necessary for the Spring container to know about the RabbitMQ broker. Listing 11-11. mydocuments-context.xml
Chapter 11 ■ Integrating Your Spring Application with External Systems http://www.springframework.org/schema/context http://www.springframework.org/schema/context/ spring-context-4.0.xsd"> Listing 11-11 contains several RabbitMQ tags. But let’s take a moment to review them. Table 11-1 shows the tags used in the XML. 162
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THE EXPERT’S VOICE ® IN SPRING
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Contents at a Glance About the Auth
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Introduction This book is an introd
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Part I Spring Framework Basics The
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Chapter 1 ■ Your First Spring App
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Chapter 2 ■ Working with Classes
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Chapter 3 Applying Different Config
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Chapter 3 ■ Applying Different Co
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Spring Stereotypes Chapter 3 ■ Ap
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Chapter 4 ■ Using Beans Scopes pu
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Chapter 4 ■ Using Beans Scopes Th
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Chapter 4 ■ Using Beans Scopes @A
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Chapter 4 ■ Using Beans Scopes do
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Chapter 5 ■ Working with Collecti
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Chapter 6 ■ Using Resource Files
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Chapter 7 Testing Your Spring Appli
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Chapter 7 ■ Testing Your Spring A
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Chapter 8 Give Advice to Your Sprin
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Chapter 8 ■ Give Advice to Your S
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Chapter 15 ■ Spring Data Within Y
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Chapter 15 ■ Spring Data Within Y
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Chapter 16 ■ Messaging with Your
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Chapter 17 Be Social and Go Mobile
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Chapter 17 ■ Be Social and Go Mob
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Part IV Spring I/O Spring I/O is no
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Chapter 18 ■ Spring and Groovy
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Chapter 18 ■ Spring and Groovy Li
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Chapter 18 ■ Spring and Groovy cl
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Chapter 18 ■ Spring and Groovy If
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Chapter 18 ■ Spring and Groovy Li
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Chapter 19 ■ Spring Boot, Simplif
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Chapter 20 ■ Your First Spring XD
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Appendix A Installing Tools In this
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Appendix A ■ Installing Tools Fig
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Setting Environment Variables Appen
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Appendix A ■ Installing Tools 6.
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Appendix A ■ Installing Tools ■
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Stop MongoDB Server Appendix A ■
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Stop ActiveMQ Appendix A ■ Instal
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Installing RabbitMQ on Windows Appe
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Installing Spring XD on Windows App
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■ index • I I/O operations, 62
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■ index Spring application (cont.
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Introducing Spring Framework A Prim
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To my parents, Rocio Cruz and Felip
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■ Contents ■■Chapter 3: Apply
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■ Contents ■■Chapter 12: Expo
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■ Contents ■■Chapter 20: Your
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About the Author Felipe Gutierrez i
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Acknowledgments I would like to exp
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