在不使用“ if”的情况下执行此操作| if（s ==“ value1”）{…}否则if（s ==“ value2”）{…}

利用策略模式。

用Java术语：

public interface Strategy {    void execute();}public class SomeStrategy implements Strategy {    public void execute() {        System.out.println("Some logic.");    }}

使用方法如下：

Map<String, Strategy> strategies = new HashMap<String, Strategy>();strategies.put("strategyName1", new SomeStrategy1());strategies.put("strategyName2", new SomeStrategy2());strategies.put("strategyName3", new SomeStrategy3());// ...strategies.get(s).execute();