Spring MVC 之简单数据绑定之绑定POJO类型

创建User类：

@Data
public class User {
    private Integer id;
    private String username;
    private String password;
}

创建两个Controller

    @RequestMapping("/toRegister")
    public String toRegister(){
        return "register";
    }

    @RequestMapping("/registerUser")
    public String registerUser(User user){
        String username = user.getUsername();
        String password = user.getPassword();
        System.out.println("username : " + username);
        System.out.println("password : " + password);
        return "success";
    }

配置Spring的配置文件applicationContext.xml

    <context:component-scan base-package="com.mason" />

    <mvc:annotation-driven/>

    <bean id="viewResoler" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>

编写前端页面

register.jsp如下：

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <form action="http://localhost/ssm/registerUser" method="post">
        用户名：<input type="text" name="username" /><br/>
        密&nbsp;&nbsp;码：<input type="password" name="password" /><br/>
        <input type="submit" value="注册"/>
    </form>
</body>
</html>

部署

输入账号密码：

控制台：

但是：发现账号有中文的话，会有乱码

在这里插入图片描述
解决方法：在web.xml中配置编码过滤器

<?xml version="1.0" encoding="UTF-8"?>
<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">



  <display-name>Archetype Created Web Application</display-name>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <filter>
        <filter-name>CharacterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>


    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

在这里插入图片描述

没有乱码了！

Mason97

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Spring MVC 之 简单数据绑定 之 绑定POJO类型

但是：发现账号有中文的话，会有乱码

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Spring MVC 之简单数据绑定之绑定POJO类型