org.springframework.beans.BeanUtils

 

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{//拷贝对象的属性     Hello user1 = new Hello();     user1.setId(1);     user1.setName("name");       Hello user2 = new Hello();     BeanUtils.copyProperties(user1, user2);     System.out.println(user2); }   {//实例化某个类     Hello user = BeanUtils.instantiateClass(Hello.class);//通过反射实例化一个类的对象     System.out.println(user); }   {//获取指定类的指定方法     Method declaredMethod = BeanUtils.findDeclaredMethod(Hello.class, "getId");     System.out.println(declaredMethod.getName()); }   {//获取指定方法的参数     Method declaredMethod = BeanUtils.findDeclaredMethod(Hello.class, "getId");     PropertyDescriptor propertyForMethod = BeanUtils.findPropertyForMethod(declaredMethod);     System.out.println(propertyForMethod.getName()); }