SpringMvc 初识

SpringMvc 跟Struts2相似，控制层

首先是配置前端控制器，当有request时，会配对，进入相应的方法

<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:spring-mvc.xml</param-value></init-param></servlet><servlet-mapping><servlet-name>springmvc</servlet-name><url-pattern>*.do</url-pattern></servlet-mapping>

springMvc:视图解析器和扫描包

 <context:component-scan base-package="com.java1234"/>    <!-- 视图解析器 --><bean id="viewResolver"class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/WEB-INF/jsp/" /><property name="suffix" value=".jsp"></property></bean>

当return时返回视图，会加上前缀和后缀，如return “hi” 会变成/WEB-INF/jsp/hi.jso

错误路径显示：

通过：<a href="hicon.do">问候SpringMvc他大爷</a>

扫描包扫到hicon这个对应的，model可以传递值

@Controllerpublic class HelloWorldController {@RequestMapping("/helloWorld")public String helloWorld(Model model){model.addAttribute("msg", "StringMvc大爷你好！");return "hi";}@RequestMapping("/hicon")    public String hicon(Model model){        model.addAttribute("msg","我是好人");        return "hi1";    }}