尽管Java的类型擦除，但获得T.class [英] Getting T.class despite Java's type-erasure

问题描述

我试图从一个配置文件中读取一个接口到它的实现，以便将它提供给我的IoC容器。这大致是我想要做的：

I'm trying to bind an interface to its implementation as read from a configuration file so that I can feed it to my IoC container. Here's roughly what I'm trying to do:

public class PropertyImplementationBinder<T> {
    // ...
    public Class getInterfaceClass() {
        return T.class; // OR Class<T>, note T is not newable
    }
    public Class getImplementationClass() {
        return /* read config file to get implementation class */;
    }
}

是否有可能获得 T.class ？

推荐答案

private final Class<T> clazz;

PropertyImplementationBinder(Class<T> clazz){
    this.clazz = clazz;
}

public Class<T> getInterfaceClass() {
    return clazz;
}

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