Spring MVC基础之密码处理

Spring MVC基础之密码处理
1、使用IDEA创建项目如下：
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2、在包my.controller下新建控制器类UserController.java

UserController.java

package my.controller;
import my.model.User;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.portlet.ModelAndView;
@Controller
public class UserController {

    //映射到初始页面：index.jsp
    @RequestMapping(value = "index",method = RequestMethod.GET)
    public ModelAndView indexPage(@ModelAttribute("user")User user){
        return new ModelAndView("index","user",new User());  //ModelAndView("页面","模型名称",模型类);
    }

    //映射到结果页面：result.jsp
    @RequestMapping(value = "login",method = RequestMethod.POST)
    public String result(@ModelAttribute("user")User user, ModelMap modelMap){
        modelMap.addAttribute("username",user.getUsername());
        modelMap.addAttribute("password",user.getPassword());
        return "/pages/result";
    }

    //映射到静态页面：staticPage.html
    @RequestMapping(value = "redirect",method = RequestMethod.GET)
    public String redirect(){
        return "redirect:/staticPages/staticPage.html";
    }
}

3、在my.model下新建实例类User.java

User.java

package my.model;
public class User {
    private String username;
    private String password;
	//构造方法自己补全（无参构造和带参构造）
	//setter()和getter()方法自己补全
	//toString()方法自己补全
}

4、前端页面：
result.jsp

//result.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>结果</title>
</head>
<body>
<p>
    <h4>学生信息如下</h4>
    <hr>
    姓名：${username}
    密码：${password}
</p>
<form action="/day0829/redirect">
    <input type="submit" value="转到静态页面" >
</form>
</body>
</html>

index.jsp

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>登录</title>
  </head>
  <body>
  <%--@elvariable id="user" type="my.model.User"--%>
  <form:form action="/day0829/login" commandName="user" modelAttribute="user">
    姓名：<form:input path="username"/>
    密码：<form:password path="password"/>
    <input type="submit" value="登录">
  </form:form>
  </body>
</html>

staticPage.html （静态页面）

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
静态页面
</body>
</html>

5、xml文件配置

dispatcher-servlet.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:p="http://www.springframework.org/schema/p" 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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <context:component-scan base-package="my.controller"/>

    <!--映射动态页面-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/" p:suffix=".jsp"/>

    <!--开启对mvc的支持-->
    <mvc:annotation-driven/>
    <!--静态资源路径-->
    <mvc:resources mapping="/staticPages/**" location="/staticPages/" />
</beans>

web.xml

<?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_4_0.xsd"
         version="4.0">
    <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>

    <!--编码过滤器-->
    <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>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

6、运行

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这里使用<form:password path="password"/>替代了传统的<input type="password" name="password" />进行密码框的输入操作，其实该标签（<form:password path="password"/>）会在页面生成<input type="password" name="password" />然后实现密码框的处理操作…
至于静态资源页面，只用于复习前面学习的静态页面内容…

码农.

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Spring MVC基础之密码处理

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