Spring-MVC开发步骤(入门配置)

Spring-MVC开发步骤(入门配置)

Step1.导包	spring-webmvc
Step2.添加spring配置文件
Step3.配置DispatcherServlet
	在web.xml中:
		<servlet>
      		<servlet-name>springmvc</servlet-name>
      			<servlet-class>
          			org.springframework.web.servlet.DispatcherServlet
      			</servlet-class>
      <!-- DispatcherServlet的初始化方法会启动spring容器,
      contextConfigLocation用来指定spring配置文件的位置 -->
      			<init-param>
          			<param-name>contextConfigLocation</param-name>
          			<param-value>classpath:spring-mvc.xml</param-value>
      			</init-param>
      			<load-on-startup>1</load-on-startup>
  		</servlet>
  
  		<servlet-mapping>
      		<servlet-name>springmvc</servlet-name>
      		<url-pattern>*.do</url-pattern>
  		</servlet-mapping>

Step4.写自己的Controller实现spring框架中的Controller,重写handleRequest方法
		/**
		 * ModelAndView有两个常用构造器
		 * ModelAndView(String viewName)
		 * ModelAndView(String viewName, Map data)	viewName:视图名	data:处理结果
		 * */

Step5.写自己的jsp

Step6.在spring配置文件中,添加HandlerMapping,ViewResolver配置
	<!-- 配置HandlerMapping -->
	<bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
		<property name="mappings">
			<props>
				<prop key="/hello.do">helloController</prop>
			</props>
		</property>
	</bean>
	<!-- 配置Controller -->
	<bean id="helloController" class="controller.HelloController"/>
	<!-- 配置视图解析器 -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/"/>
		<property name="suffix" value=".jsp"/>
	</bean>