类型转换器(InitBinder 初始化绑定器)

@Controller
public class FirstController {
/**
* @param binder
*/

@InitBinder
public void initBinder(WebDataBinder binder){
//PropertyEditor
//类  implements  PropertyEditor
　　　　　　　　　　//yyyy-MM-dd格式的时间
binder.registerCustomEditor(Date.class, new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd"), true));
}

@RequestMapping("/first.do")
//类型转化工作一定是在真正的handler方法执行前执行的。
public String doFirst(Date birthday,int age) throws Exception{
System.out.println(birthday+"===============");
System.out.println(age+"===============");
return "/WELCOME.jsp";
}

}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
">

<!-- 配置包扫描器-->
<context:component-scan base-package="cn.happy.controller"></context:component-scan>
</beans>