Spring MVC工作在控制层, 替代的是servlet
Servlet不好的地方:
1). 一个请求对应一个servlet, servlet类的数量特别多。
2). 处理请求参数麻烦
request.getParameter()
request.getParameter()
User u = new User();
u.setxx();
u.setxxx();
MyService.addUser(u);
3). 响应
4). 文件上传
5). 其他。。。
1). 添加jar包
2). 编写springmvc.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util"
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-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-3.2.xsd">
<!--配置注解形式的处理器映射器和处理器适配器-->
<mvc:annotation-driven></mvc:annotation-driven>
<!--配置包扫描-->
<context:component-scan base-package="com.neuedu.controller"></context:component-scan>
<!--配置视图解析器,不配置,使用默认的-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/"></property>
<!-- <property name="suffix" value="jsp"></property>-->
</bean>
3). 编写web.xml
<!-- 配置spring mvc的前端控制器 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
4). 编写控制器
@Controller
@RequestMapping("/test")
public class ActiveController {
@RequestMapping("/test")
public ModelAndView getActive()
{
}
}
5). 在springmvc.xml中配置静态资源
<!-- 配置静态资源 -->
<!-- <mvc:resources location="/js/" mapping="/js/**"/>
<mvc:resources location="/img/" mapping="/img/**"/>
<mvc:resources location="/css/" mapping="/css/**"/>
<mvc:resources location="/html/" mapping="/html/**"/>
<mvc:resources location="/upload/" mapping="/upload/**"/>
<mvc:resources location="/fonts/" mapping="/fonts/**"/> -->
<!-- 如果路径映射不到controller上,采用服务器默认查找方式 -->
<mvc:default-servlet-handler/>
6 ). 将资源放在WEB-INF下,修改相应的配置
<mvc:resources location="/WEB-INF/js/" mapping="/js/**"/>
<mvc:resources location="/WEB-INF/img/" mapping="/img/**"/>
<mvc:resources location="/WEB-INF/css/" mapping="/css/**"/>
<mvc:resources location="/WEB-INF/html/" mapping="/html/**"/>
<mvc:resources location="/WEB-INF/upload/" mapping="/upload/**"/>
<mvc:resources location="/WEB-INF/fonts/" mapping="/fonts/**"/>
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