java - Strategy Pattern and Dependency Injection in Spring -


i have strategy interface, implemented strategya , strategyb, both of them defined @component's , have @autowired attribute well, how can obtain instance of 1 of them based on string value?

this controller's action, should perform strategy:

@requestmapping("/blabla") public void perform (@requestparam string strategyname) {     strategy strategy = (strategy) /* concrete strategy based on strategyname */;     strategy.dostuff (); } 

thanks!

you can programmatically:

private @autowired beanfactory beanfactory;  @requestmapping("/blabla") public void perform (@requestparam string strategyname) {     strategy strategy = beanfactory.getbean(strategyname, strategy.class);     strategy.dostuff(); } 

you fancier way using custom webargumentresolver, that's lot more trouble it's worth.


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