Accessing spring configured HashMap from applicationContext inside any classes in the Project

Question

Trying to create (Key,Value) pair ie, HashMap in the applicationContext and trying access it from a class through @Resource annotation.

But it is unable to inject hashMap and getting null in the @Resource variable.

ApplicationContext :

<bean id="explicitWaitTime" class="java.util.HashMap">
    <constructor-arg>
        <map key-type="java.lang.String" value-type="java.lang.String">
            <entry key="COSCO" value="15"/>
            <entry key="Hamburg" value="15"/>
         </map>
    </constructor-arg>
</bean>

Business Class :

public class BusinessClass implements IBusinessClass {    

@Resource 
private Map<String, String> explicitWaitTime;

@Override 
public void getExplicitWaitMaps() {  // From IBusinessClass interface

System.out.println("ExplicitWaitTime " +     
explicitWaitTime.get("COSCO"); //explicitWaitTime is null

}    
}

Answer 1

Multiple ways to inject:

• In your application context file, define another bean for your business class and using constructor or setter injection, inject a hashmap. For this, you will have to provide either parameterized constructor or a property setter depending upon if it can work with or without hashmap.
• use Auto wired annotation

Answer 2

用@Component注释BusinessClass类，然后让spring容器实例化它。