使用java的注解(用在java类的方法上的注解)方法

/**注解作用在方法上*/@Target({ElementType.METHOD}) /**注解的生命周期一直程序运行时都存在VM运行期间保留注解，可以通过反射机制读取注解信息*/@Retention(RetentionPolicy.RUNTIME)/**注解包含在Javadoc中*/@Documented public @interface Item {	String value();}

public class WorkService { 	private static Logger logger = LoggerFactory.getLogger(WorkService.class); 	@Item("1001")	public int getItem1001Info(GirlVo girl) { 		logger.info("getItem1001Info输出:");		logger.info(girl.toString());		return 1;	}	@Item("1002")	public int getItem1002Info(GirlVo girl) { 		logger.info("getItem1002Info输出:");		logger.info(girl.toString());		return 1;	}	@Item("1003")	public int getItem1003Info(GirlVo girl) {		logger.info("getItem1003Info输出:");		logger.info(girl.toString());		return 1;	}	@Item("1004")	public int getItem1004Info(GirlVo girl) {		logger.info("getItem1004Info输出:");		logger.info(girl.toString());		return 1;	}	@Item("1005")	public int getItem1005Info(GirlVo girl) {		logger.info("getItem1005Info输出:");		logger.info(girl.toString());		return 1;	}	@Item("1006")	public int getItem1006Info(GirlVo girl) {		logger.info("getItem1006Info输出:");		logger.info(girl.toString());		return 1;	}}

public class GirlVo implements Serializable { 	private static final long serialVersionUID = -8545755852948661858L;	/**ID号*/	private String girlId;	/**姓名*/	private String girlName;	/**年龄*/	private Long age;	/**身高*/	private Double height;	/**罩杯*/	private String cupSize;	public String getGirlId() {		return girlId;	}	public void setGirlId(String girlId) {		this.girlId = girlId;	}	public String getGirlName() {		return girlName;	}	public void setGirlName(String girlName) {		this.girlName = girlName;	}	public long getAge() {		return age;	}	public void setAge(long age) {		this.age = age;	}	public double getHeight() {		return height;	}	public void setHeight(double height) {		this.height = height;	}	public String getCupSize() {		return cupSize;	}	public void setCupSize(String cupSize) {		this.cupSize = cupSize;	} 	@Override	public String toString() {				return "GirlVo [girlId=" + girlId				+",girlName=" + girlName				+",age=" + age				+",height=" + height				+",cupSize=" + cupSize				+"]";	}}

		 List<Method> methods = MethodUtils.getMethodsListWithAnnotation(clazz,Item.class);		 for (Method method : methods) {			 for (Annotation annotation : method.getDeclaredAnnotations()) {				 if (annotation instanceof Item){					 String code = ((Item) annotation).value();					 if (Objects.equals(item, code)){						 try {								logger.info("注解号:" + code +" 执行开始...");							method.invoke(clazz.newInstance(), girlVo);							logger.info("注解号:" + code +" 执行结束...");						} catch (Exception e) {							e.printStackTrace();							logger.info("抛异常...");						}					 }				 }			 }		 } 	} }

public class TestAnnotation {		private static Logger logger = LoggerFactory.getLogger(TestAnnotation.class);	 	public static void main(String []args) throws ClassNotFoundException{		logger.info("测试开始......");		HashMap<String,Object> map = (HashMap<String,Object>) getData();		/**遍历hashMap*/		for(Entry<String,Object> entry : map.entrySet()){			String item = entry.getKey();			GirlVo girlVo = (GirlVo) entry.getValue();			ReflectCallMethodAnnotation.annotationMethod(item,girlVo);		}				logger.info("测试结束......");	}  	public static Map getData() { 		HashMap<String ,Object> data = new HashMap();		 		GirlVo girlVo1 = new GirlVo();		girlVo1.setGirlId("1001");		girlVo1.setGirlName("张一");		girlVo1.setAge(27);		girlVo1.setHeight(169);		girlVo1.setCupSize("F");				GirlVo girlVo2 = new GirlVo();		girlVo2.setGirlId("1002");		girlVo2.setGirlName("王二");		girlVo2.setAge(29);		girlVo2.setHeight(175);		girlVo2.setCupSize("B");				GirlVo girlVo3 = new GirlVo();		girlVo3.setGirlId("1003");		girlVo3.setGirlName("刘五");		girlVo3.setAge(24);		girlVo3.setHeight(160);		girlVo3.setCupSize("B");				GirlVo girlVo4 = new GirlVo();		girlVo4.setGirlId("1004");		girlVo4.setGirlName("陈六");		girlVo4.setAge(21);		girlVo4.setHeight(168);		girlVo4.setCupSize("C");				GirlVo girlVo5 = new GirlVo();		girlVo5.setGirlId("1005");		girlVo5.setGirlName("赵七");		girlVo5.setAge(25);		girlVo5.setHeight(169);		girlVo5.setCupSize("C");				GirlVo girlVo6 = new GirlVo();		girlVo6.setGirlId("1006");		girlVo6.setGirlName("张八");		girlVo6.setAge(26);		girlVo6.setHeight(165);		girlVo6.setCupSize("A");				data.put("1001", girlVo1);		data.put("1002", girlVo2);		data.put("1003", girlVo3);		data.put("1004", girlVo4);		data.put("1005", girlVo5);		data.put("1006", girlVo6);				return data;	} }