Injecting properties value in Spring

This tutorial will show you how we can auto inject value from properties file in Spring. For this tutorial we will create a standalone maven project in Eclipse.
If you already have an idea on how to create a maven project in Eclipse will be great otherwise I will tell you here how to create a maven project in Eclipse.

Prerequisites

The following things are required in order to run the application

Eclipse Helios
JDK 1.6
Have maven installed and configured
Spring dependencies in pom.xml

Now we will see the below steps how to create a maven based spring project in Eclipse

Step 1. Create a standalone maven project in Eclipse

Go to File -> New -> Other. On popup window under Maven select Maven Project. Then click on Next. Select the workspace location – either default or browse the location. Click on Next. Now in next window select the row as highlighted from the below list of archtypes and click on Next button.

Injecting properties value in Spring
Now enter the required fields (Group Id, Artifact Id) as shown below picture
Injecting properties value in Spring
Step 2. Modify the pom.xml file as shown below.

Step 3. If you see JRE System Library[J2SE-1.4] then change the version by below process

Do right-click on the project and go to Build -> Configure build path, under Libraries tab click on JRE System Library[J2SE-1.4], click on Edit button and select the appropriate jdk 1.6 from the next window. Click on Finish then Ok.

Step 4. Create src/main/resources folder for putting the resource files.

Do right-click on the project and go New -> Source Folder. Give Folder name: as src/main/resources and click on Finish button.

Step 5. Create a properties file under src/main/resources.

Do right-click on src/main/resources in the project and go New -> file. Give File name: as app.properties and click on Finish button.

Step 6. Create datasource.xml file under src/main/resources with the below content.

Step 7. Create applicationContext.xml file under src/main/resources with the below content.

Step 8. Create InjectBean in com.roytuts.springproj package

Note : if you get error then you can change the Compiler compliance level, Generated .class files compatibility, Source compatibility to 1.6

Step 9. Now create a main class which will test the application.

Step 10. Run the App.java. You will get the below output

That’s all. Thank you for reading.

Soumitra

Software Professional, I am passionate to work on web/enterprise application. For more information please go to about me. You can follow on Twitter. You can be a friend on Facebook or Google Plus or Linkedin

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