@Test
//使用BeanUtils设置/读取属性的值以及自动转化
public void test1() throws IllegalAccessException, InvocationTargetException, NoSuchMethodException{Person p=new Person();//使用BeanUtils设置属性的值BeanUtils.setProperty(p, "username", "李四");//使用BeanUtils读取属性的值        System.out.println(BeanUtils.getProperty(p, "username"););//类型不同依然可以自动转化,BeanUtils默认支持八种基本类型的转换BeanUtils.setProperty(p,"age", "123");System.out.println(p.getAge());}

@Test
//注册已有的转化器来完成复杂类型的自动转化
public void test3() throws IllegalAccessException, InvocationTargetException{Person p=new Person();String birthday="1995-05-05";//注册Apache提供的时间转换器ConvertUtils.register(new DateLocaleConverter(), Date.class);BeanUtils.setProperty(p, "birthday", birthday);System.out.println(p.getBirthday());
}

@Test
//注册自己的转换器完成时间转化
public void test2() throws IllegalAccessException, InvocationTargetException{Person p=new Person();String birthday="1995-05-05";//为了日期可以赋值到bean的属性,我们给benUtils注册日期转换器ConvertUtils.register(new Converter(){@SuppressWarnings({ "unchecked", "rawtypes" })public Object convert(Class type,Object value){if(value==null){return null;}if(!(value instanceof String)){throw new ConversionException("只支持String类型的转换");}String str=(String) value;if(str.trim().equals("")){return null;}SimpleDateFormat dateformate=new SimpleDateFormat("yyyy-MM-dd");try {return dateformate.parse(str);} catch (ParseException e) {throw new RuntimeException(e);}                }}, Date.class);BeanUtils.setProperty(p, "birthday", birthday);System.out.println(p.getBirthday());
}

@Test
//直接使用map对象填充类
public void test4() throws Exception{HashMap<String, String> map=new HashMap<String,String>();map.put("username","李四");map.put("password","lisi");map.put("age","26");map.put("birthday","1990-05-05");ConvertUtils.register(new DateLocaleConverter() , Date.class);Person p=new Person();BeanUtils.populate(p, map);System.out.println(p.getUsername());System.out.println(p.getPassword());System.out.println(p.getAge());System.out.println(p.getBirthday());}