3 BeanUtils框架/工具（APACHE开源组织开发）

1）BeanUtils框架能够完成内省的一切功能，而且优化2）BeanUtils框架能够对String<->基本类型自动转化3）BeanUtils框架自定义转换器：ConvertUtils.register( 转换规则 ，目标对象的Class)4)向BeanUtils框架注册自定义转换器必须放在bu.setProperty()代码之前 5)使用BeanUtils内置String->Date的转换器：ConvertUtils.register(new DateLocaleConverter(),java.util.Date.class);

```

public class Student {

private String name;private int age;public Date getBirthday() {    return birthday;}public void setBirthday(Date birthday) {    this.birthday = birthday;}private Date birthday;public String getName() {    return name;}public void setName(String name) {    this.name = name;}public int getAge() {    return age;}public void setAge(int age) {    this.age = age;}

}`

@Test    public void test1() throws Exception    {        Student s = new Student();        BeanUtils bu = new BeanUtils();        ConvertUtils.register(new DateLocaleConverter(), java.util.Date.class);        bu.setProperty(s, "name", "李玟");        bu.setProperty(s, "age", "123213");        bu.setProperty(s,"birthday","2011-10-09");        String name = bu.getProperty(s, "name");        String age = bu.getProperty(s, "age");        String birthday = bu.getProperty(s,"birthday");        System.out.println("name = "+name);        System.out.println("age = "+age);        System.out.println("birthday="+new Date(birthday).toLocaleString());    }

自定义

//向BeanUtils框架注册自定义的转换器（String->java.util.Date)        ConvertUtils.register(new Converter(){            public Object convert(Class clazz, Object type) {                //参数一：java.util.Date.class(目标类型）                //参数二：是传入的参数类型，即java.lang.String                String strBirthday = (String) type;                SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");                try {                    return sdf.parse(strBirthday);                } catch (ParseException e) {                    e.printStackTrace();                    return null;                }            }        },java.util.Date.class);