public class reflectTest { /** * 利用反射设置实体类的属性 * * @return * @throws ClassNotFoundException * @throws IllegalAccessException * @throws InstantiationException * @throws NoSuchFieldException * @throws SecurityException * @throws NoSuchMethodException * @throws InvocationTargetException * @throws IllegalArgumentException */ public static boolean setAttributes(Class<?> classPath) throws ClassNotFoundException, InstantiationException, IllegalAccessException, SecurityException, NoSuchFieldException, NoSuchMethodException, IllegalArgumentException, InvocationTargetException { Class cls; cls = Class.forName(Student.class.getName()); Object tObject = cls.newInstance(); Field field = cls.getDeclaredField("id"); field.setAccessible(true); // 设置私有属性范围 field.set(tObject, 10); System.out.print("field得到的值" + field.get(tObject) + "\n"); Method method = cls.getMethod("setId", int.class); method.invoke(tObject, 11); Method getMethod = cls.getMethod("getId"); System.out.println("method得到的值" + getMethod.invoke(tObject)); return true; } /** * 利用反射获取实体类的属性 * * @return * @throws IntrospectionException * @throws ClassNotFoundException * @throws InvocationTargetException * @throws IllegalAccessException * @throws IllegalArgumentException */ public static boolean getAttributes(Class<?> classPath, Object obj) throws IntrospectionException, ClassNotFoundException, IllegalArgumentException, IllegalAccessException, InvocationTargetException { PropertyDescriptor[] pds; pds = Introspector.getBeanInfo(classPath).getPropertyDescriptors(); Class cls = Class.forName(classPath.getName()); Field[] fieldlist = cls.getDeclaredFields(); for (PropertyDescriptor pd : pds) { for (int i = 0; i < fieldlist.length; i++) { if (fieldlist[i].getName().equals(pd.getName())) { Method getter = pd.getReadMethod(); Object value = getter.invoke(obj); System.out.println(fieldlist[i].getName() + "===" + value); } } } return true; } public static void main(String[] args) throws IllegalArgumentException, IntrospectionException, ClassNotFoundException, IllegalAccessException, InvocationTargetException, SecurityException, InstantiationException, NoSuchFieldException, NoSuchMethodException { Student student = new Student(); student.setAddress("china"); student.setEmail("zt123qq.com"); student.setId(1); student.setName("zt"); Birthday day = new Birthday("2010-11-22"); student.setBirthday(day); System.out.println(getAttributes(Student.class, student)); System.out.println(setAttributes(Student.class)); } }