[JAVA] Create a base for your batch processing project in Eclipse.

This article describes how to create a batch processing project in Eclipse by fumbling and trial and error.

Prerequisite work:

1. 1. Download spring-tool-suite from the following site and extract it to a suitable location. (Example: C: \ pleiades , etc.) Download destination: https://spring.io/tools/sts/all
2. Start Eclipse and specify C: \ pleiades \ sts-3.9.2.RELEASE expanded in 1. as WorkSpace and start it.

Project creation work:

1. 1. In Package Explorer, right-click-> New-> Project-> Spring Starter Project.

2. Enter a name-> Here, enter BatchTestApp and click Next.

3. 3. Check the batch and click the Finish button to finish.

4. The main function that runs the batch process is automatically generated.

5. Right-click BatchTestApplication.java and click Debug-> Java Application to run it.

6. that? , Will result in an error.

Exception in thread "main" java.lang.NoClassDefFoundError:org/springframework/core/env/EnvironmentCapable When I look it up, I get an error that the org / springframework / core / env / EnvironmentCapable class cannot be found.

7. Check pom.xml.

After a lot of trial and error, the cause is that the version of spring-boot-startar-parent in pom.xml is 1.5.9.RELEASE. Try it with the source code of BatchTestApplication.java When I try to type import org.springframework.core.env.EnvironmentCapable ;, I get an error saying that the imported org.springframework.core.env.EnvironmentCapable cannot be found.

8. Modify pom.xml. (Set the version to 1.2.1.RELEASE)

9. Right-click BatchTestApplication.java again and click Debug-> Java Application to run it.

I don't know why 1.5.9.RELEASE doesn't have a class, but Spring is now working.