what's the best way to use application constants in spring xml configuration?

constants, java, spring, spring-el

Solution

You could use `<util:constant>` (See C.2.2 The util schema):

<bean class="example.SomeBean">
    <property name="anyProperty">
       <util:constant static-field="example.AppConfiguration.EXAMPLE_CONSTANT" />
    </property>
</bean>

It's debatable as to whether that's any better, though. Your SpEL version is more succinct.

Another option is to use the Java configuration style, which is more natural (see 4.12 Java-based container configuration):

@Bean
public SomeBean myBean() {
    SomeBean bean = new SomeBean();
    bean.setProperty(EXAMPLE_CONSTANT);  // using a static import
    return bean;
}

Problem

I want to use my application constants within spring xml configuration. I know to do that with spring SpEl with something like this: ``` <bean class="example.SomeBean"> <property name="anyProperty" value="#{ T(example.AppConfiguration).EXAMPLE_CONSTANT}" /> <!-- Other config --> </bean> ``` So, is there a better way to do this?

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