SpringMVC如何实现请求参数类型转换与原生API代码实例对比？

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xml

一、springmvc的xml配置文件

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="www.springframework.org/schema/beans" xmlns:xsi="www.w3.org/2001/XMLSchema-instance" xmlns:context="www.springframework.org/schema/context" xmlns:mvc="www.springframework.org/schema/mvc" xsi:schemaLocation="www.springframework.org/schema/beans www.springframework.org/schema/beans/spring-beans.xsd www.springframework.org/schema/context www.springframework.org/schema/context/spring-context.xsd www.springframework.org/schema/mvc www.springframework.org/schema/mvc/spring-mvc.xsd"> <!--扫描组件--> <context:component-scan base-package="com.wuxi"></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> <property name="suffix" value=".jsp"></property> </bean> <!--参数类型装换器--> <bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean"> <property name="converters"> <set> <bean class="com.wuxi.utils.StringToDateConverter"></bean> </set> </property> </bean> <!--开启springmvc框架注解的支持--> <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven> </beans>

二、转换的类

package com.wuxi.utils; import org.springframework.core.convert.converter.Converter; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; public class StringToDateConverter implements Converter<String, Date> { @Override public Date convert(String string) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Date date = null; try { date = sdf.parse(string); } catch (ParseException e) { e.printStackTrace(); } return date; } }

三、接口

@RequestMapping("/student") public String student(Student student, HttpServletRequest request, HttpServletResponse response) { System.out.println(student); return "success"; }

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