[1] Java反射知识-->Spring IoC :http://www.iteye.com/topic/1123081 [2] Java动态代理-->Spring AOP :http://www.iteye.com/topic/1123293 [3] 属性编辑器,即PropertyEditor-->Spring IoC:http://www.iteye.com/topic/1123628 [4] XML基础知识-->Spring配置:http://www.iteye.com/topic/1123630 [5] 注解-->Spring配置:http://www.iteye.com/topic/1123823 [6] 线程本地变更,即ThreadLocal-->Spring事务管理:http://www.iteye.com/topic/1123824 [7] 事务基础知识-->Spring事务管理:http://www.iteye.com/topic/1124043 [8] 国际化信息-->MVC:http://www.iteye.com/topic/1124044 [9] HTTP报文-->MVC:http://www.iteye.com/topic/1124408
Class文件由类装载器装载后,在JVM中将形成一份描述Class结构的元信息对象,通过该元信息对象可以获知Class的结构信息:如构造函数、属性和方法等。Java允许用户借由这个Class相关的元信息对象间接调用Class对象的功能,这就为使用程序化方式操作Class对象开辟了途径。
//①通过类装载器获取Car类对象 ClassLoader loader = Thread.currentThread().getContextClassLoader(); Class clazz = loader.loadClass("com.baobaotao.reflect.Car"); //②获取类的默认构造器对象并通过它实例化Car Constructor cons = clazz.getDeclaredConstructor((Class[])null); Car car = (Car)cons.newInstance(); //③通过反射方法设置属性 Method setBrand = clazz.getMethod("setBrand",String.class); setBrand.invoke(car,"红旗CA72"); Method setColor = clazz.getMethod("setColor",String.class); setColor.invoke(car,"黑色"); Method setMaxSpeed = clazz.getMethod("setMaxSpeed",int.class); setMaxSpeed.invoke(car,200); return car; } public static void main(String[] args) throws Throwable { Car car = initByDefaultConst(); car.introduce(); } }
注意:获取当前类的类加载器ClassLoader loader = Thread.currentThread().getContextClassLoader();
注意:获取当前类的类加载器ClassLoader loader = Thread.currentThread().getContextClassLoader();
注意:获取当前类的类加载器ClassLoader loader = Thread.currentThread().getContextClassLoader();
注意:获取当前类的类加载器ClassLoader loader = Thread.currentThread().getContextClassLoader();
转载于:https://www.cnblogs.com/panxuejun/p/7840142.html
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