先建立一个类,有四种属性:
private int id; private String name; private byte by; private short st;
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以下方法,创建一个对象,然后打印该对象的属性名字,属性值,和属性的类型:
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); } /** * 获得一个对象各个属性的字节流 */ @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()); } } /** * 获得对象属性的值 */ @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); } }
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打印结果如下:
id 1 int name cc class java.lang.String by 1 byte st 2 short
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通过这些内容,可以在系统中写一些公共的解析方法,内容仅供参考。
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