Spring系列【12】简单MVC应用

User.java

package com.user;

public class User {
    private String username;
    private String password;
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
}

Validation.java

package com.validation;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;

import com.user.User;

public class Validation extends AbstractController {
    private User user;

    public User getUser() {
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }
    protected ModelAndView handleRequestInternal(HttpServletRequest request,
            HttpServletResponse response) throws Exception {
        String username=request.getParameter("username");
        String password=request.getParameter("password");
    if(username.equals(user.getUsername())&&password.equals(user.getPassword())){
            return new ModelAndView("yes");
        }else{
            return new ModelAndView("error");
        }
    }
}

以上为本例要用到的jar包，与前几例相比，多了web 和webmvc两个包。

Spring的配置文件如下:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd">
    <!--定义控制器转发视图类 -->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>
    <!-- 为User对象属性赋值 -->
    <bean id="user" class="com.user.User">
        <property name="username">
            <value>admin</value>
        </property>
        <property name="password">
            <value>111</value>
        </property>
    </bean>
    <!-- 让bean Validation自动装配User并映射do -->
    <bean name="/login.do"  autowire="byName" class="com.validation.Validation">
        <property name="user" ref="user">
        </property>
    </bean>
</beans>

web.xml配置文件如下:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  <display-name>zidingyi</display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/applicationContext.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
</web-app>

文件结构如下：

注意文件名与return new ModelAndView("yes");的对应关系。。。

 

特别留言：与User类成员变量的对应关系