Spring Util:Properties Injection via Annotations into a bean

Question

If I have 2 .properties files setup in my Spring XML as so:

Answer 1

Most of time I encapsulate all properties in to a one utility and used in my apps. In that way you don't need to worry/manage each properties file in app layer. Autowired setProps(...) reads all you loaded util:properties in to the props list.

import java.util.List;
import java.util.Properties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class AppProperiesProcessor {

private List props;
private Properties mergedProperties;

@Autowired
public final void setProps(List props) {
    this.props = props;
}

public String getProp(final String keyVal) {

    if (null == this.mergedProperties) {
        this.mergedProperties = new Properties();

        for (Properties prop : this.props) {
            this.mergedProperties.putAll(prop);
        }
    }
    return mergedProperties.getProperty(keyVal);
  } 
}