国庆节数据系统研发日记第一天Spring MVC DEMO

一. Spring MVＣ

1.  引入Jar包，主要是springframework 的jar包和所以来的jar包

2. 配置Web.xml

        重点是Listener/filter/servlet/配置

       如下：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
 <context-param>
     <param-name>contextConfigLocation</param-name>
     <param-value>/WEB-INF/spring-servlet.xml</param-value>
 </context-param>
 
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<filter>
    <filter-name>encodingFilter</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>encodingFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>

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

<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
  
</web-app>
3. 配置 spring-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:mvc="http://www.springframework.org/schema/mvc"  
   xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd  
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.0.xsd  
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">  
<mvc:annotation-driven></mvc:annotation-driven>
<context:component-scan base-package="com.shang.sa.visualization"/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/WEB-INF/view/" p:suffix=".jsp"></bean>
</beans>

4. 配置applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
 <property name="locations">
 <list>
 <value>/WEB-INF/jdbc.properties</value>
 </list>
 </property>
 </bean>
</beans>

5. 配置jdbc.properties

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/sa
jdbc.username=root
jdbc.password=123

6. 增加class 和jsp文件

package com.shang.sa.visualization;

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

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class LoginController {
    
    public LoginController(){    
    }
    
    @RequestMapping(value="/login.do",method=RequestMethod.GET)
    public ModelAndView Login(HttpServletRequest request,HttpServletResponse response,ModelMap modelMap){
        
        return new ModelAndView("/login/login",modelMap);
    }
    

}

增加jsp文件

WEB-INF/view/login/login.jsp

执行：http://localhost:8080/springMvcSample/login.do

7. 问题：

  a. Tomcat Class not found

     把所需的jar包copy到lib文件夹下

8. 贴两张图