示例【Spring MVC 使用Conversionservice轉換資料】
建立項目并導入相關jar包
建立register.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>自定義類型轉換器</title>
</head>
<body>
<form action="register" method="post">
<table>
<tr>
<td>使用者名：</td>
<td><input type="text" name="userName"></td>
</tr>
<tr>
<td>密碼：</td>
<td><input type="password" name="passWord"></td>
</tr>
<tr>
<td>生日：</td>
<td><input type="text" name="birthday"></td>
</tr>
<tr>
<td></td>
<td><input type="submit" value="注冊"></td>
</tr>
</table>
</form>
</body>
</html>
建立User
package com.po;
import java.util.Date;
public class User {
private String userName; //使用者名
private String passWord; //密碼
private Date birthday; //生日
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassWord() {
return passWord;
}
public void setPassWord(String passWord) {
this.passWord = passWord;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
@Override
public String toString() {
return "User [userName=" + userName + ", passWord=" + passWord + ", birthday=" + birthday + "]";
}
}
建立UserController
package com.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import com.po.User;
@Controller
public class UserController {
@RequestMapping("/register")
public String register(@ModelAttribute User user,Model model) {
System.out.println(user);
model.addAttribute("user", user);
return "success";
}
}
建立MyConverter
package com.converter;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.springframework.core.convert.converter.Converter;
public class MyConverter implements Converter<String, Date>{
private String datePattern;
public void setDatePattern(String datePattern) {
this.datePattern = datePattern;
}
@Override
public Date convert(String date) {
SimpleDateFormat dateFormat = new SimpleDateFormat(this.datePattern);
try {
return dateFormat.parse(date);
} catch (ParseException e) {
e.printStackTrace();
}
return null;
}
}
在springmvc-config.xml中加入自定義轉換器
<?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.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">
<!-- 使用注解驅動 -->
<mvc:annotation-driven conversion-service="conversionService"/>
<!-- 定義掃描的包 -->
<context:component-scan base-package="com.*" />
<!-- 視圖解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value=""></property>
<property name="suffix" value=".jsp" />
</bean>
<!-- 自定義的類型轉換器 -->
<bean id="conversionService"
class="org.springframework.context.support.ConversionServiceFactoryBean">
<property name="converters">
<list>
<bean class="com.converter.MyConverter"
p:datePattern="yyyy-MM-dd"></bean>
</list>
</property>
</bean>
</beans>
建立success.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>success</title>
</head>
<body>
使用者名：${requestScope.user.userName }<br>
生日：<fmt:formatDate value="${requestScope.user.birthday}" pattern="yyyy年MM月dd日"/><br>
</body>
</html>
啟動Tomcat通路register.jsp
