How to read multiple properties with same prefix in java spring?

Question

I am having the property file with the following values. I want to read all the properties with same prefix excluding others using spring mvc.

test.cat=cat
test.dog=dog
test.cow=cow
birds=eagle

Environment.getProperty("test.cat");

This will return only 'cat' .

In the above property file, I want to get all the properties starting(prefix) with test excluding birds. In spring boot we can achieve this with @ConfigurationProperties(prefix="test"), but how to achieve the same in spring mvc.

Answer 1

See this Jira ticket from Spring project for explanation why you don't see a method doing what you want. The snippet at the above link can be modified like this with an if statement in innermost loop doing the filtering. I assume you have a Environment env variable and looking for String prefix:

Map<String, String> properties = new HashMap<>();
if (env instanceof ConfigurableEnvironment) {
    for (PropertySource<?> propertySource : ((ConfigurableEnvironment) env).getPropertySources()) {
        if (propertySource instanceof EnumerablePropertySource) {
            for (String key : ((EnumerablePropertySource) propertySource).getPropertyNames()) {
                if (key.startsWith(prefix)) {
                    properties.put(key, propertySource.getProperty(key));
                }
            }
        }
    }
}