本类中的日期自动注入

package com.chentianyu.controller;
import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
import org.springframework.web.bind.annotation.RequestMapping;
import java.text.SimpleDateFormat;
import java.util.Date;
@Controller
public class MyDateAction {
    SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");
    //单个日期注入
    /**
     * 日期:<input type="date" name="myDate" /><br>
     * @return
     */
    /*@RequestMapping("/myDate")
    public String myDate(@DateTimeFormat(pattern = "yyyy-MM-dd"*//*将字符串转为日期注入进去*//*) Date myDate){
        System.out.println(myDate);
        System.out.println(sf.format(myDate));
        return "show";
    }*/
    //全局日期处理
    //注册一个全局的日期处理注解
    @InitBinder
    public void initBinder(WebDataBinder dataBinder/*重点*/){
        dataBinder.registerCustomEditor(/*转化的类型*/Date.class,/*使用什么工具去转*/new CustomDateEditor(sf,true));
    }
    @RequestMapping("/myDate")
    public String myDate(Date myDate){
        System.out.println(myDate);
        System.out.println(sf.format(myDate));
        return "show";
    }
}

好处是连<mvc:annotation-driven />都省去可以不写