Java – How to assign bean’s property an Enum value in Spring config file

javaspring

I have a standalone enum type defined, something like this:

package my.pkg.types;

public enum MyEnumType {
    TYPE1,
    TYPE2
}

Now, I want to inject a value of that type into a bean property:

<bean name="someName" class="my.pkg.classes">
   <property name="type" value="my.pkg.types.MyEnumType.TYPE1" />
</bean>

…and that didn't work 🙁

How should I Inject an Enum into a spring bean?

Best Answer

Have you tried just "TYPE1"? I suppose Spring uses reflection to determine the type of "type" anyway, so the fully qualified name is redundant. Spring generally doesn't subscribe to redundancy!

Related Solutions

Java – How to inject a property value into a Spring Bean which was configured using annotations

You can do this in Spring 3 using EL support. Example:

@Value("#{systemProperties.databaseName}")
public void setDatabaseName(String dbName) { ... }

@Value("#{strategyBean.databaseKeyGenerator}")
public void setKeyGenerator(KeyGenerator kg) { ... }

systemProperties is an implicit object and strategyBean is a bean name.

One more example, which works when you want to grab a property from a Properties object. It also shows that you can apply @Value to fields:

@Value("#{myProperties['github.oauth.clientId']}")
private String githubOauthClientId;

Here is a blog post I wrote about this for a little more info.

Java – How to get an enum value from a string value in Java

Yes, Blah.valueOf("A") will give you Blah.A.

Note that the name must be an exact match, including case: Blah.valueOf("a") and Blah.valueOf("A ") both throw an IllegalArgumentException.

The static methods valueOf() and values() are created at compile time and do not appear in source code. They do appear in Javadoc, though; for example, Dialog.ModalityType shows both methods.

Best Answer

Related Solutions

Java – How to inject a property value into a Spring Bean which was configured using annotations

Java – How to get an enum value from a string value in Java

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