springMVC----springMVC的HelloWorld

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搭建步骤

a.导入jar包

导入到spring4.0的所有jar包（虽然不是都有用的，但是我嫌麻烦就全导进来了）

b.配置web.xml----配置分发器

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"         version="3.1">    <welcome-file-list>        <welcome-file>index.jsp</welcome-file>    </welcome-file-list>        <servlet>        <servlet-name>springmvc</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <!--设置第一个启动-->        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>springmvc</servlet-name>        <url-pattern>*.do</url-pattern>    </servlet-mapping></web-app>

c.添加springmvc配置文件，默认在WEB-INF下配置[DispatcherServlet]-servlet.xml 文件

d.编写HelloController.java

    @Override    public ModelAndView handleRequest(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws Exception {        ModelAndView mv = new ModelAndView();        //封装要显示到视图中的数据        mv.addObject("msg","hello springMVC");        //视图名        mv.setViewName("hello");        return mv;    }

e.编写springmvc-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: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.xsd        http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context.xsd">    <!--配置handlerMapping-->    <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>    <!--配置handlerAdapter-->    <bean class="org.springframework.web.portlet.mvc.SimpleControllerHandlerAdapter"></bean>    <!--配置视图渲染器-->    <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>        <!--结果视图的前缀-->        <property name="prefix" value="/WEB-INF/jsp"></property>        <!--结果视图的后缀-->        <property name="suffix" value=".jsp"></property>    </bean>    <!--如果没有配置adapter则需要将路径写完整，即／hello.do-->    <bean id="/hello" class="cn.limbo.controller.HelloController" /></beans>

f.测试

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