Custom Annotation Processor working in Maven but not in eclipse

Question

I have a custom Annotation Processor which is being used in a sample project. I have added the following in the pom.xml file of the sample project

  <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <groupId>org.apache.maven.plugins</groupId>
            <configuration>
                <annotationProcessors>
                    <annotationProcessor>com.******.CustomAnnotationProcessor</annotationProcessor>
                </annotationProcessors>
                <compilerArgs>
                    <arg>-Amyarg=${project.artifactId}</arg>
                </compilerArgs>
            </configuration>
 </plugin>

I then declare the argument in the application.properties file as follows:

@myarg@.someVal=foobar

And access it as follows “

public class TestClass {
@Value("${@myarg@.someVal}")
private String testVal;

public void testMethod(){
    System.out.println(testVal);
}
}

It is working fine in Intelli J as testVal prints out to be foobar. However, in eclipse I get the following error :

org.springframework.beans.factory.BeanCreationException: Error creating     bean with name ‘testClass': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder ‘@myarg@.someVal’ in string value "${@myarg@.someVal}"

I understand that Eclipse uses its own compiler, while Maven probably uses javac. How do I get this custom annotation working for eclipse as well?

check this https://stackoverflow.com/questions/43404891/how-to-configure-java-annotation-processors-in-eclipse — miskender, Mar 15 '18 at 17:51
Read [this](https://stackoverflow.com/questions/43404891/how-to-configure-java-annotation-processors-in-eclipse) Or convert your project into maven project in Eclipse. — Victor Gubin, Mar 15 '18 at 17:58

score 1 · Answer 1 · answered Mar 15 '18 at 18:21

1

Please follow below steps to enable annotation processing.

Right click on the project and select Properties.
In Java Compiler -> Annotation Processing. Check Enable annotation processing.

Open Java Compiler -> Annotation Processing -> Factory Path. Check Enable project specific settings. Add your JAR file to the list.

4. Clean and build the project.

answered Mar 15 '18 at 18:21

Gyanendra Dwivedi

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Excuse me If I am asking something obvious but what exactly do you mean by "your JAR". Custom Annotation Processor's jar ? – frigocat Mar 15 '18 at 18:29
You must have a jar with custom annotation and annotation processor? – Gyanendra Dwivedi Mar 15 '18 at 18:30

score 0 · Answer 2 · answered Nov 23 '18 at 22:58

I too had this problem.

99% of the solution was as gyan described.

The last 1% was for eclipse I needed "jar" files needed specify all needed jar files in the "Factory Path".

For my project this meant

the annotation-definition project jar,
the annotation-processing project jar, and
javapoet.jar.

Custom Annotation Processor working in Maven but not in eclipse

2 Answers2