/** 
* 通过反射取到 List<T> 中 T 的类型 
* @param clazz 
* @param field 
* @return 
*/ 
public static Class<? extends Object> getGenericType(Class<? extends Object> clazz, Field field){ 
 Method getMethod = getGetMethodByField(clazz,field); 
 ParameterizedType pt= (ParameterizedType)getMethod.getGenericReturnType(); 
        Class<? extends Object> type = (Class<?>)pt.getActualTypeArguments()[0]; 
        //System.out.println(type.getSimpleName()); 
        //System.out.println(type.getPackage()); 
        return type; 
}