ssm整合快速入门程序(三)之Data类型转换器

今天就写写springmvc配置Data类型转换器

首先在创建一个转换器的包cn.my.ssm.controller.converter，创建一个CustomDateConverter类实现Converter<String, Date>接口的public Date convert(String source)方法

package cn.my.ssm.controller.converter;

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

import org.springframework.core.convert.converter.Converter;
/**
 * date类型转换
 * @author Administrator
 *
 */
public class CustomDateConverter implements Converter<String, Date>  {

    @Override
    public Date convert(String source) {
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        try {
            return simpleDateFormat.parse(source);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return null;
    }

}

然后再到springmvc.xml里面添加转换器映射代码

<?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:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
       <!--  扫描组件 -->
        <context:component-scan base-package="cn.my.ssm.controller"></context:component-scan>

       <!--  配置静态资源解析器 -->
       <mvc:resources location="/js/" mapping="/js/**"/>

        <!-- 配置映射器和适配器 -->
        <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven>

        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name="prefix" value="/WEB-INF/jsp/"></property>
            <property name="suffix" value=".jsp"></property>
        </bean>
      <!--   配置转换器（比如Date类型） -->
        <bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
            <property name="converters">
                <list>
                    <bean class="cn.my.ssm.controller.converter.CustomDateConverter"></bean>
                </list>
            </property>
        </bean>
</beans>

然后修改itemsList.jsp的表格代码，代码如下

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt"  prefix="fmt"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>查询商品列表</title>
<script type="text/javascript">
    function deleteItems(){
        document.formSubmit.action = "${pageContext.request.contextPath }/items/deleteItems.action";
        document.formSubmit.submit();
    }
    function queryItems(){
        document.formSubmit.action = "${pageContext.request.contextPath}/items/queryItems.action";
        document.formSubmit.submit();
    }
    function batchEditItems(){
        document.formSubmit.action = "${pageContext.request.contextPath}/items/batchEditItems.action";
        document.formSubmit.submit();
    }
</script>
</head>
<body>
用户:${name }
<a href="${pageContext.request.contextPath}/logout.action">退出</a>
<form name="formSubmit" action="${pageContext.request.contextPath }/items/queryItems.action" method="post">
查询条件：
<table width="100%" border=1>
<tr>
<td><input name="itemsCustom.name" type="text" value=""/></td>
<td>
<input type="button" value="查询" onclick="queryItems()"/>
<input type="button" value="批量删除" onclick="deleteItems()"/>
<input type="button" value="批量修改" onclick="batchEditItems()"/>
</td>
</tr>
</table>
商品列表：
<table width="100%" border=1>
<tr>
    <td>选择</td>
    <td>商品名称</td>
    <td>商品价格</td>
    <td>生产日期</td>
    <td>商品描述</td>
    <td>操作</td>
</tr>
<c:forEach items="${itemsList }" var="item">
<tr>
    <td><input type="checkbox" name="items_id" value="${item.id}"/></td>
    <td>${item.name }</td>
    <td>${item.price }</td>

   <!--使用jstl标签返回时间格式-->
    <td><fmt:formatDate value="${item.createtime}" pattern="yyyy-MM-dd HH:mm:ss"/></td>
    <td>${item.detail }</td>

    <td><a href="${pageContext.request.contextPath }/items/editItems.action?id=${item.id}">修改</a></td>

</tr>
</c:forEach>

</table>
</form>
</body>

</html>

这样就完成date类型转换了