TypeUtils.java 文件源码

public static Class<?> getClass(Type type){
    if(type.getClass() == Class.class){
        return (Class<?>) type;
    }

    if(type instanceof ParameterizedType){
        return getClass(((ParameterizedType) type).getRawType());
    }

    if(type instanceof TypeVariable){
        Type boundType = ((TypeVariable<?>) type).getBounds()[0];
        return (Class<?>) boundType;
    }

    if(type instanceof WildcardType){
        Type[] upperBounds = ((WildcardType) type).getUpperBounds();
        if (upperBounds.length == 1) {
            return getClass(upperBounds[0]);
        }
    }

    return Object.class;
}