先建立一個(gè)類，有四種屬性：

private int id; private String name; private byte by; private short st;

以下方法，創(chuàng)建一個(gè)對(duì)象，然后打印該對(duì)象的屬性名字，屬性值，和屬性的類型：

public class T {public static void main(String[] args) throws Exception {User u = new User();u.setId(1);u.setName('cc');u.setBy((byte)1);u.setSt((short)2);getProperty(u);}/** * 獲得一個(gè)對(duì)象各個(gè)屬性的字節(jié)流 */@SuppressWarnings('unchecked')public static void getProperty(Object entityName) throws Exception {Class c = entityName.getClass();Field field[] = c.getDeclaredFields();for (Field f : field) {Object v = invokeMethod(entityName, f.getName(), null);System.out.println(f.getName() + 't' + v + 't' + f.getType());}}/** * 獲得對(duì)象屬性的值 */@SuppressWarnings('unchecked')private static Object invokeMethod(Object owner, String methodName,Object[] args) throws Exception {Class ownerClass = owner.getClass();methodName = methodName.substring(0, 1).toUpperCase()+ methodName.substring(1);Method method = null;try {method = ownerClass.getMethod('get' + methodName);} catch (SecurityException e) {} catch (NoSuchMethodException e) {return ' can’t find ’get' + methodName + '’ method';}return method.invoke(owner);}}

打印結(jié)果如下：

id 1 int name cc class java.lang.String by 1 byte st 2 short

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