spring mvc 数据转换

2022-10-12 13:27:47

项目目录结构

User.java

package org.mythsky.springmvcdemo.model;

import org.springframework.format.annotation.DateTimeFormat;

import java.io.Serializable;

import java.util.Date;

public class User implements Serializable {

    private String loginname;

    private Date birthday;

    public User() {

        super();

    }

    public String getLoginname() {

        return loginname;

    }

    public void setLoginname(String loginname) {

        this.loginname = loginname;

    }

    public Date getBirthday() {

        return birthday;

    }

    public void setBirthday(Date birthday) {

        this.birthday = birthday;

    }

}

DateEditor.java

package org.mythsky.springmvcdemo.converter;

import java.beans.PropertyEditorSupport;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Date;

public class DateEditor extends PropertyEditorSupport {

    public void setAsText(String text) throws java.lang.IllegalArgumentException {

        try{

            SimpleDateFormat dateFormat=new SimpleDateFormat("yyyy-MM-dd");

            Date date=dateFormat.parse(text);

            setValue(date);

        } catch (ParseException e) {

            e.printStackTrace();

        }

    }

}

UserController.java

package org.mythsky.springmvcdemo.controller;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.mythsky.springmvcdemo.converter.DateEditor;

import org.mythsky.springmvcdemo.model.User;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.bind.WebDataBinder;

import org.springframework.web.bind.annotation.*;

import java.util.Date;

@Controller

public class UserController {

    private static final Log logger= LogFactory.getLog(UserController.class);

    @InitBinder

    public void initBinder(WebDataBinder binder){

        binder.registerCustomEditor(Date.class,new DateEditor());

    }

    @RequestMapping(value = "/{formName}")

    public String loginForm(@PathVariable String formName){

        return formName;

    }

    @RequestMapping(value = "/register",method = RequestMethod.POST)

    public String register(@ModelAttribute User user,Model model){

        logger.info(user);

        model.addAttribute("user",user);

        return "success";

    }

}

registerForm.jsp

<%--

  Created by IntelliJ IDEA.

  User: mythsky

  Date: //

  Time: :

  To change this template use File | Settings | File Templates.

--%>

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

<head>

    <title>注册</title>

</head>

<body>

<h3>注册页面</h3>

<form action="register" method="post">

    <table>

        <tr>

            <td><label>登录名：</label></td>

            <td><input type="text" id="loginname" name="loginname"></td>

        </tr>

        <tr>

            <td><label>生日：</label></td>

            <td><input type="text" id="birthday" name="birthday"></td>

        </tr>

        <tr><td><input type="submit" value="登录"></td></tr>

    </table>

</form>

</body>

</html>

success.jsp

<%--

  Created by IntelliJ IDEA.

  User: mythsky

  Date: //

  Time: :

  To change this template use File | Settings | File Templates.

--%>

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

<head>

    <title>登录成功</title>

</head>

<body>

登录名：${requestScope.user.loginname}<br>

生日：${requestScope.user.birthday}<br>

</body>

</html>

web.xml

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"

         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"

         version="3.1">

    <servlet>

        <servlet-name>springmvc</servlet-name>

        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

        <init-param>

            <param-name>contextConfigLocation</param-name>

            <param-value>/WEB-INF/services.xml</param-value>

        </init-param>

        <load-on-startup></load-on-startup>

    </servlet>

    <servlet-mapping>

        <servlet-name>springmvc</servlet-name>

        <url-pattern>/</url-pattern>

    </servlet-mapping>

</web-app>

services.xml

<?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:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p"

       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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <context:component-scan base-package="org.mythsky.springmvcdemo"></context:component-scan>

    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean>

    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"></bean>

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix" value="/WEB-INF/views/"></property>

        <property name="suffix" value=".jsp"></property>

    </bean>

</beans>

pom.xml

<dependencies>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-context</artifactId>

            <version>5.0..RELEASE</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-web</artifactId>

            <version>5.0..RELEASE</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-webmvc</artifactId>

            <version>5.0..RELEASE</version>

        </dependency>

    </dependencies>

运行结果

码农公寓

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