Spring MVC 进行数据类型转换的三种方式

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Spring MVC 进行数据类型转换的三种方式

1.使用ConversionService  <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="www.Springframework/schema/beans" xmlns:xsi="www.w3/2001/XMLSchema-instance" xmlns:aop="www.springframework/schema/aop" xmlns:context="www.springframework/schema/context" xmlns:MVC="www.springframework/schema/mvc" xmlns:p="www.springframework/schema/p" xsi:schemaLocation="www.springframework/schema/beans www.springframework/schema/beans/spring-beans.xsd www.springframework/schema/context www.springframework/schema/context/spring-context.xsd www.springframework/schema/mvc www.springframework/schema/mvc/spring-mvc.xsd"> <!-- 配置处理器Handle，映射为“/hello”的请求 --> <!-- <bean name="/hello" class="com.springmvc.controller.HelloController" /> --> <mvc:annotation-driven conversion-service="conversionService"/> <bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean"> <property name="converters"> <list> <bean class="com.springmvc.converter.StringToDateConverter" p:datePattern="yyyy-MM-dd"></bean> </list> </property> </bean> <!-- 配置自动扫描的基包 --> <context:component-scan base-package="com.springmvc"/> <!-- 配置视图解析器，将控制器方法返回的逻辑视图解析为物理视图 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" > <!-- <property name="prefix" value="/ch06/"></property> --> <!-- <property name="prefix" value="/ch07/" /> --> <property name="prefix" value="/ch09/" /> <property name="suffix" value=".jsp"></property> </bean> <!-- 直接页面转发 --> <mvc:view-controller path="success" view-name="success"/> <mvc:view-controller path="index" view-name="index"/> <bean class="org.springframework.web.servlet.view.BeanNameViewResolver"> <property name="order" value="50"></property> </bean> <mvc:default-servlet-handler/> </beans> package com.springmvc.converter; import java.text.SimpleDateFormat; import java.util.Date; import org.springframework.core.convert.converter.Converter; public class StringToDateConverter implements Converter<String, Date> { private String datePattern; public void setDatePattern(String datePattern) { this.datePattern = datePattern; } @Override public Date convert(String date) { try { SimpleDateFormat dateFormat=new SimpleDateFormat(datePattern); return dateFormat.parse(date); //将字符串性转换成Date类型 } catch (Exception e) { e.printStackTrace(); System.out.println("日期转换失败"); return null; } } } 2.使用@InitBinder注解 和  WebDataBinder 类 @InitBinder public void initBinder(WebDataBinder binder) { SimpleDateFormat dateFormat=new SimpleDateFormat("yyyy-MM-dd"); binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true)); }  3.使用@DateTimeFormat注解  import org.springframework.format.annotation.DateTimeFormat; public class User { @DateTimeFormat(pattern="yyyy-MM-dd") private Date birthday; ...

本文标签： 三种数据类型方式springMVC