springMvc 时间格式转换

我们在使用springMvc后端框架的时候经常会遇到时间字段，前端提交一个时间到后台来做保存或者其它操作，这个时候我们前后端一般会约定一个时间格式，通用的是一般是yyyy-MM-dd HH:mm:ss或者yyyy-MM-dd。

如果没有设置的话就会报错，报错详情大概是：

Failed to convert property value of type [java.lang.String] to required type [java.util.Date] for property 'expert.birthdate'; nested exception is java.lang.IllegalArgumentException: Cannot convert value of type [java.lang.String] to required type [java.util.Date] for property 'birthdate': no matching editors or conversion strategy found 。

解决办法：

1.通常我们的controller类都会继承一个BaseController类，所以我们在BaseController类里添加以下代码：

@InitBinder
   public void initBinder(WebDataBinder binder, WebRequest webRequest) {
       //使用spring自带的CustomDateEditor
       SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
       binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));

}

注意要使用@InitBinder 注解，比较推荐使用这种方式。

2.使用全局配置方式

2.1 创建CustomDate类实现WebBindingInitializer

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.support.WebBindingInitializer;
import org.springframework.web.context.request.WebRequest;

public class CustomDate implements WebBindingInitializer{

   @Override
   public void initBinder(WebDataBinder binder, WebRequest request) {
       // TODO Auto-generated method stub
       //转换日期
       DateFormat dateFormat=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
       binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));

}

2.2 在Spring-MVC.xml中配置日期转换

<?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:aop="http://www.springframework.org/schema/aop"
   xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
   xmlns:context="http://www.springframework.org/schema/context"
   xsi:schemaLocation="
     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
     http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
     http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
     http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
     http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
   <context:component-scan base-package="com.gwd.shopping" use-default-filters="false">
       <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
   </context:component-scan>

   
   <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
       <property name="webBindingInitializer">
           <bean class="com.gwd.shopping.core.web.CustomDate"/>
       </property>
   </bean>

   <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
       <property name="prefix" value="/WEB-INF/back_page/"/>
       <property name="suffix" value=".jsp"/>
   </bean>

springMvc 时间格式转换

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