BeanUtils操作

 

1.   BeanUtils的使用：

2.   //通过beanutils赋值

3.   @Test

4.   publicvoid test() throws Exception {

5.   //加载类

6.   Class cla = Class.forName("com.csdn.java05.Student");

7.   //实力bean对象

8.   Student bean = (Student) cla.newInstance();

9.   //通过beanutils赋值bena中name变量

10.BeanUtils.setProperty(bean, "name", "asd");

 

11.System.out.println(bean.getName());

 

12.}

13.//beanutils赋值有自动转换功能

14.@Test

15.publicvoid test1() throws Exception {

16.Class cla = Class.forName("com.csdn.java05.Student");

 

17.Student bean = (Student) cla.newInstance();

 

18.BeanUtils.setProperty(bean, "age","12");

 

19.System.out.println(bean.getAge());

 

20.}

21.//beanutils赋值给date类型的变量通过ConvertUtils.register()方法

22.@Test

23.publicvoid test2() throws Exception {

24.Class cla = Class.forName("com.csdn.java05.Student");

 

25.Student bean = (Student) cla.newInstance();

 

26.ConvertUtils.register(new DateLocaleConverter(), Date.class);

 

 

27.BeanUtils.setProperty(bean, "time","1992-12-12");

 

28.System.out.println(bean.getTime());

 

29.}

 

 

30.//beanutils赋值给date类型的变量通过自定义转换

31.@Test

32.publicvoid test3() throws Exception {

33.Class cla = Class.forName("com.csdn.java05.Student");

 

34.Student bean = (Student) cla.newInstance();

 

35.ConvertUtils.register(new Converter() {

 

36.public Object convert(Class type, Object arg1) {

 

37.if(arg1==null){

 

38.returnnull;

39.}

 

40.SimpleDateFormat si=new SimpleDateFormat("yyyy-MM-dd");

 

41.Date dt=null;

 

42.try {

43.dt=si.parse((String) arg1);

44.} catch (ParseException e) {

 

45.e.printStackTrace();

46.}

 

 

47.return dt;

48.}

49.}, Date.class);

 

 

50.BeanUtils.setProperty(bean, "time","1992-22-12");

 

51.System.out.println(bean.getTime());

 

52.}

 

53.在这当中如果用自定义的格式转换日期格式如果日期不符也会转换，但是通过ConvertUtils.register（）错误的日期不会转换。在使用beanUtils需要导入jar包