How to set global config/variable in Spring MVC 4?

I am using Spring MVC 4.1.4

I have some global settings to share in whole application

These setting should only be loaded when start the server

I know I can use context-param

<context-param>
    <param-name>configA</param-name>
    <param-value>valueA</param-value>
</context-param>
<context-param>
    <param-name>configB</param-name>
    <param-value>valueB</param-value>
</context-param>

But I want store some complex object, like this

HashMap myConfig = new HashMap();

String[] cfgB={"b1", "b2"};

HashMap<String, String> cfgC=new HashMap<String, String>();
cfgC.put("C1", "1");
cfgC.put("C2", "2");

MyConfigD cfgD = new MyConfigD();

myConfig.put("configA", "A");
myConfig.put("configB",cfgB);
myConfig.put("configC",cfgC);
myConfig.put("configD",cfgD);

context-param is not possible to do that, what else I can use in Java or Spring?