springmvc中如何自定义类型转换器

package com.hope.utils;


import org.springframework.core.convert.converter.Converter;
import org.springframework.util.StringUtils;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
  第一步定义一个类型转换器的类
 * @author newcityman
 * @date 2019/11/26 - 19:57
 */
public class StringToDateConverter implements Converter<String,Date>{

 /**
 *
 * @param source
 * @return
 */
 @Override
 public Date convert(String source) {
 if(StringUtils.isEmpty(source)){
 throw new RuntimeException("参数不能为空，请输入一个参数。");
 }
  DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
 try {
 return df.parse(source);
 } catch (ParseException e) {
 throw new RuntimeException("日期转换失败，请联系管理员。");
 }
 }
}

// 第二步，在springmvc.xml中配置自定义类型转换器

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

 <!--指定spring扫描的包-->
 <context:component-scan base-package="com.hope"></context:component-scan>
 <!--视图解析器-->
 <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
 <property name="prefix" value="/WEB-INF/pages/"/>
 <property name="suffix" value=".jsp"/>
 </bean>
 <!--配置自定义类型转换器-->
 <bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean">
 <property name="converters">
 <set>
 <bean class="com.hope.utils.StringToDateConverter"></bean>
 </set>
 </property>
 </bean>

 <!--开启springmvc框架注解的支持,包含开启处理器映射器和处理器适配器-->
 <mvc:annotation-driven conversion-service="conversionService"/>
</beans>