spring mvc时间格式化（注解驱动格式化）
今天在测试spring mvc时间类型数据转换，出现一个问题，现在和大家分享一下：
1.模型文件 User.java代码如下：
package cn.itcast.model;
import java.util.Date;
import javax.validation.constraints.Max;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Past;
import javax.validation.constraints.Size;
import org.springframework.format.annotation.DateTimeFormat;
/**
*
*/
public class User {
private Integer id;
private String name;
private Integer age;
private String email;
private String addr;
@DateTimeFormat(pattern="yyyy-MM-dd")
private Date birthday; //Date默认转化的时间格式为：1990/12/19
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getAddr() {
return addr;
}
public void setAddr(String addr) {
this.addr = addr;
}
@Override
public String toString() {
return "User [addr=" + addr + ", age=" + age + ", birthday=" + birthday
+ ", email=" + email + ", id=" + id + ", name=" + name + "]";
}
}
2.前台表单页面：add.jsp
<pre name="code" class="html"><%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>添加用户</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<style type="text/css">
html,body{
margin:0;
padding:0;
font-size: 12px;
font-family: "仿宋";
}
input{
width:180px;
height:25px;
}
.error {
color: #ff0000;
font-style: italic;
}
</style>
</head>
<body>
<div style="width: 400px;margin: 100px auto;">
<fieldset style="width: 100%">
<legend>添加学生</legend>
<form action="${pageContext.request.contextPath}/user/save" method="POST">
<table border="0" cellpadding="5" cellspacing="0" style="margin: 0 auto;">
<tr>
<td>ID:</td>
<td>
<input type="text" name="id"/>
</td>
</tr>
<tr>
<td>姓名:</td>
<td>
<input type="text" name="name"/>
</td>
</tr>
<tr>
<td>邮箱:</td>
<td>
<input type="text" name="email"/>
</td>
</tr>
<tr>
<td>年龄:</td>
<td>
<input type="text" name="age"/>
</td>
</tr>
<tr>
<td>生日:</td>
<td>
<input type="text" name="birthday"/>
</td>
</tr>
<tr>
<td colspan="2" align="center">
<input type="submit" value="添加" style="width:60px;"/>
</td>
</tr>
</table>
</form>
</fieldset>
</div>
</body>
</html>
</pre>3.UserController.java代码如下
<pre name="code" class="java">package cn.itcast.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import cn.itcast.model.User;
@Controller
@RequestMapping("/user")
public class UserController {
@RequestMapping("/add")
public String add(){
return "user/add";
}
@RequestMapping(value="/save",method=RequestMethod.POST)
public String save(@ModelAttribute("user") User user){
return "user/success";
}
}
问题：
<span style="white-space:pre"> </span>在表单提交时后台服务端报错500，原因为String类型的birthday无法装换为Date类型，那就相当于我再model中添加的@DateTimeFormat注解没有起作用。
解决办法：
<span style="white-space:pre"> </span>添加joda-time.jar到项目中（我的理解：spring Formator只是提供接口，并没有具体的实现，而joda-time相当于实现了该接口）。