springMVC_02hello案例

此生再无相见时 提交于 2020-02-19 13:29:20

  

   1.导入jar包

    commons-logging-1.1.1.jar

    jackson-annotations-2.5.4.jar

    jackson-core-2.5.4.jar

    jackson-databind-2.5.4.jar

    spring-aop-4.1.6.RELEASE.jar

    spring-beans-4.1.6.RELEASE.jar

    spring-context-4.1.6.RELEASE.jar

    spring-core-4.1.6.RELEASE.jar

    spring-expression-4.1.6.RELEASE.jar

    spring-tx-4.1.6.RELEASE.jar

    spring-web-4.1.6.RELEASE.jar

    spring-webmvc-4.1.6.RELEASE.jar

 

  2.配置web.xml-配置分发器,在web.xml文件添加如下代码

  <servlet>
        <servlet-name>springMVC</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springMVC</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>

 

 

  3.添加springMVC配置文件,添加到web-inf目录下,名称规范:[dispatcherServlet]-servlet.xml,本案例为:springMVC-servlet.xml

 

  4.编写控制器类HelloController,实现Controller接口

package com.ahd.controller;

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

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

public class HelloController implements Controller{

    public ModelAndView handleRequest(HttpServletRequest req,
            HttpServletResponse resp) throws Exception {
        // TODO Auto-generated method stub
        ModelAndView mv=new ModelAndView();
        
        //设置要显示到视图的信息
        mv.addObject("msg", "hello springmvc");
        //设置视图名称
        mv.setViewName("hello");
        
        return mv;
    }

}

 

  5.编写springMVC配置文件

<?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"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd">
    <!-- 配置handlerMapping -->
    <bean class=" org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>
    <!-- 配置handlerAdapter -->
    <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"></bean>
    <!-- 配置渲染器 -->
    <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <!-- 将视图名 渲染后视图的前缀 -->
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <!-- 渲染后视图的后缀 -->
        <property name="suffix" value=".jsp"/>
        <!-- 例:视图名为:hello   渲染后:/WEB-INF/jsp/hello.jsp 该页面-->
    </bean>
    <!-- 配置请求和处理器 -->
    <bean name="/hello.do" class="com.ahd.controller.HelloController"></bean>
</beans>

 

  6.测试

 

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