Spring Batch Tutorial (Part 4)

Review

We have just completed our application! In the previous sections, we have discussed how to perform batch processing with Spring Batch. We have also created a Spring MVC application to act as a web interface. In this section, we will build and run the application using Maven, and demonstrate how to import the project in Eclipse.

Table of Contents

Part 1: Introduction and Functional Specs
Part 2: Java classes
Part 3: XML configuration
Part 4: Running the Application

Running the Application

Access the source code

To download the source code, please visit the project's Github repository (click here)

Preparing the data source

1. Run MySQL (install one if you don't have one yet)
2. Create a new database:
   

   spring_batch_tutorial

3. Import the following file which is included in the source code under the src/main/resources folder:
   

   schema-mysql.sql

   This script contains Spring Batch infrastructure tables which can be found in the Spring Batch core library. I have copied it here separately for easy access.
   

Building with Maven

1. Ensure Maven is installed
2. Open a command window (Windows) or a terminal (Linux/Mac)
3. Run the following command:
   

   mvn tomcat:run

4. You should see the following output:
   

   [INFO] Scanning for projects...
   [INFO] Searching repository for plugin with prefix: 'tomcat'.
   [INFO] artifact org.codehaus.mojo:tomcat-maven-plugin: checking for updates from central
   [INFO] artifact org.codehaus.mojo:tomcat-maven-plugin: checking for updates from snapshots
   [INFO] ------------------------------------------
   [INFO] Building spring-batch-tutorial Maven Webapp
   [INFO]    task-segment: [tomcat:run]
   [INFO] ------------------------------------------
   [INFO] Preparing tomcat:run
   [INFO] [apt:process {execution: default}]
   [INFO] [resources:resources {execution: default-resources}]
   [INFO] [tomcat:run {execution: default-cli}]
   [INFO] Running war on http://localhost:8080/spring-batch-tutorial
   Feb 13, 2012 9:36:54 PM org.apache.catalina.startup.Embedded start
   INFO: Starting tomcat server
   Feb 13, 2012 9:36:55 PM org.apache.catalina.core.StandardEngine start
   INFO: Starting Servlet Engine: Apache Tomcat/6.0.29
   Feb 13, 2012 9:36:55 PM org.apache.catalina.core.ApplicationContext log
   INFO: Initializing Spring root WebApplicationContext
   Feb 13, 2012 9:37:01 PM org.apache.coyote.http11.Http11Protocol init
   INFO: Initializing Coyote HTTP/1.1 on http-8080
   Feb 13, 2012 9:37:01 PM org.apache.coyote.http11.Http11Protocol start
   INFO: Starting Coyote HTTP/1.1 on http-8080
   

Note: If the project will not build due to missing repositories, please enable the repositories section in the pom.xml!

Access the Entry page

1. Follow the steps with Building with Maven
2. Open a browser
3. Enter the following URL (8080 is the default port for Tomcat):
   

   http://localhost:8080/spring-batch-tutorial/

Import the project in Eclipse

1. Ensure Maven is installed
2. Open a command window (Windows) or a terminal (Linux/Mac)
3. Run the following command:
   

   mvn eclipse:eclipse -Dwtpversion=2.0

4. You should see the following output:
   

   [INFO] Scanning for projects...
   [INFO] Searching repository for plugin with prefix: 'eclipse'.
   [INFO] org.apache.maven.plugins: checking for updates from central
   [INFO] org.apache.maven.plugins: checking for updates from snapshots
   [INFO] org.codehaus.mojo: checking for updates from central
   [INFO] org.codehaus.mojo: checking for updates from snapshots
   [INFO] artifact org.apache.maven.plugins:maven-eclipse-plugin: checking for updates from central
   [INFO] artifact org.apache.maven.plugins:maven-eclipse-plugin: checking for updates from snapshots
   [INFO] -----------------------------------------
   [INFO] Building spring-batch-tutorial Maven Webapp
   [INFO]    task-segment: [eclipse:eclipse]
   [INFO] -----------------------------------------
   [INFO] Preparing eclipse:eclipse
   [INFO] No goals needed for project - skipping
   [INFO] [eclipse:eclipse {execution: default-cli}]
   [INFO] Adding support for WTP version 2.0.
   [INFO] -----------------------------------------
   [INFO] BUILD SUCCESSFUL
   [INFO] -----------------------------------------
   

   This command will add the following files to your project:
   

   .classpath
   .project
   .settings
   target

   You may have to enable "show hidden files" in your file explorer to view them
   
5. Open Eclipse and import the project

Conclusion

That's it! We've have successfully completed our Spring Batch application and learned how to process of jobs in batches. We've also added Spring MVC support to allow jobs to be controlled online.

I hope you've enjoyed this tutorial. Don't forget to check my other tutorials at the Tutorials section.

Revision History

---

Revision	Date	Description
1	Feb 16 2012	Uploaded tutorial and Github repository

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