前端代码:
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>自定义类型转换器</title>
</head>
<body>
<%--自定义类型转换器--%>
<form action="param/saveuser" method="post">
曾用名:<input type="text" name="uname" placeholder="请输入您的姓名"><br>
年龄:<input type="text" name="age" placeholder="请输入您的年龄"><br>
用户生日:<input type="text" name="date"><br>
<input type="submit" value="提交">
</form>
</body>
</html>
控制器代码:
package Controller;
import domain.Account;
import domain.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
/**
* 请求参数绑定
*/
@Controller
@RequestMapping("/param")
public class paramController {
/**
* 自定义类型转换器
* @param user
* @return
*/
@RequestMapping("/saveuser")
public String saveuser (User user){
System.out.println("执行了......");
System.out.println(user);
return "success" ;
}
}
把字符串转换日期类:
package utils;
import org.springframework.core.convert.converter.Converter;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* 把字符串转换日期
*/
public class StringToDataConverter implements Converter<String, Date> {
/**
*
* @param s
* @return
*/
@Override
public Date convert(String s) {
//判断
if (s==null){
throw new RuntimeException("请您传入数据") ;
}
DateFormat df = new SimpleDateFormat("yyyy-MM-dd") ;
//把字符串转换日期
try {
return df.parse(s) ;
} catch (Exception e) {
throw new RuntimeException("数据类型转换出现错误....") ;
}
}
}
springmvc文件配置自定义类型转换器
要在<mvc:annotation-driven"/>进行注册
<?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:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
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.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:component-scan base-package="Controller"/>
<!--视图解析器-->
<bean id="ViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!-- 配置自定义类型转换器 -->
<bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean">
<property name="converters">
<set>
<bean class="utils.StringToDataConverter"></bean>
</set>
</property>
</bean>
<!--配置映射器处理器,处理器适配器-->
<mvc:annotation-driven conversion-service="conversionService"/>
<!--释放静态资源-->
<mvc:default-servlet-handler/>
</beans>
省略web.xml文件..........