我有一个实用方法:
public static void MyUtility(ClassWhoDoesImportantThink instance,
Object params...){...}
通常我以以下方式调用此方法:
public class UsualClass{
...
@Inject
ClassWhoDoesImportantThink importantInstance;
...
public aMethod(){
...
UtilityClass.myItility(importantInstance, arg1, arg2);
...
}
}
其中@Inject是Guice功能。
但是,也许存在将“ importantInstance”直接注入我的静态实用程序的方法吗?像:
public static void MyUtility( Object params...){
ClassWhoDoesImportantThink instance =
GuiceFeature.getObjectUsuallyInjected(ClassWhoDoesImportantThink.class);
... //Do job
}
最佳答案
在MyUtility
中:
@Inject
static ClassWhoDoesImportantThink importantInstance;
或者,或者:
static ClassWhoDoesImportantThink importantInstance;
@Inject static void setImportantInstance(ClassWhoDoesImportantThink importantInstance) {
MyUtility.importantInstance = importantInstance;
}
并在适当的Guice模块
configure()
方法中: requestStaticInjection(MyUtility.class);
Guice随后将在其初始设置期间注入静态变量或设置器,并且
MyUtility
静态方法可以简单地使用静态字段。