How to inject a key-value map with Spring 4?

Question

VI=Visa
MC=Mastercard
...

Can I automatically inject this into a Map<String, String> with Spring?

Like:

@Resource("${myfile.properties}")
private Map<String, String> creditcards;

Is that possible?

Use `Property` instead of a map? see http://stackoverflow.com/questions/4669805/java-properties-file-specs — , Apr 06 '16 at 09:14
Injecting list works, I've done it. Don't know about map, but a test with a springjunitrunner should give you an answer quickly. — Jonathan Schoreels, Apr 06 '16 at 09:17

score 2 · Accepted Answer · answered Apr 06 '16 at 09:23

Found a nice feature:

@Bean(name = "credit")
public PropertiesFactoryBean mapper() {
    PropertiesFactoryBean bean = new PropertiesFactoryBean();
    bean.setLocation(new ClassPathResource("credit.properties"));
    return bean;
}

inject it anywhere as follows:

@Resource(name = "credit")
private Properties credit;

score 0 · Answer 2 · edited May 23 '17 at 10:28

0

Did you saw this: How to inject a Map using the @Value Spring Annotation?

Here in the Question the person uses a map. So perhaps you can use this? Otherwise you can use the Properties class (https://docs.oracle.com/javase/7/docs/api/java/util/Properties.html) and if you really need a map, you can transform the properties-object to a map

edited May 23 '17 at 10:28

Community

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answered Apr 06 '16 at 09:28

cproeller

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How to inject a key-value map with Spring 4?

2 Answers2