Spring MVC 示例

Srping MVC项目结构如下：

一、首先创建一个Dynamic Web Project

二、WebContent/WEB-INF/文件夹下新增 web.xml，配置servlet　　

　　容器对于web.xml的加载过程是context-param >> listener >> filter >> servlet，本例子中只配置了servlet，其余按默认配置。

<web-app id="WebApp_ID" version="2.4"

    xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee

   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

    <display-name>Spring MVC Application</display-name>

    <servlet>

        <servlet-name>HelloWeb</servlet-name>

        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

        <!-- 用于配置spring mvc的配置文件的位置和名称，对应的是下一步(步骤三)中的springmvc.xml -->

        <!-- 也可以不用配置<init-para>，默认的配置文件为/WEB-INF/[servlet-name]-servlet.xml，此项目中为WEB-INF文件夹下新增HelloWeb-servlet.xml -->

        <init-param>

            <param-name>contextConfigLocation</param-name>

            <param-value>WEB-INF/config/springmvc.xml</param-value>

        </init-param>

        <load-on-startup>1</load-on-startup>

    </servlet>

    <servlet-mapping>

        <servlet-name>HelloWeb</servlet-name>

        <url-pattern>/</url-pattern>

    </servlet-mapping>

</web-app>

二、WebContent/WEB-INF/config文件夹下新增springmvc.xml

<beans xmlns="http://www.springframework.org/schema/beans"

   xmlns:context="http://www.springframework.org/schema/context"

   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-3.0.xsd

   http://www.springframework.org/schema/context

   http://www.springframework.org/schema/context/spring-context-3.0.xsd">

   <!-- spring可以自动去扫描base-pack下面或者子包下面的java文件，如果扫描到有@Component @Controller@Service等这些注解的类，则把这些类注册为bean -->

   <context:component-scan base-package="com.mousewheel" />

   <!-- 视图解析器，用于将控制器中handler的结构解析为实际的物理视图 -->

   <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

      <property name="prefix" value="/WEB-INF/jsp/" />

      <property name="suffix" value=".jsp" />

   </bean>

</beans>

三、新增Controller，HelloController.java

package com.mousewheel.springmvc;

import org.springframework.stereotype.Controller;

import org.springframework.ui.ModelMap;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

@Controller

@RequestMapping("/hello")

public class HelloController {

    @RequestMapping(method = RequestMethod.GET)

    public void printHello(ModelMap model) {

        model.addAttribute("message", "Spring MVC Framework!");

    }

}

四、新增页面，hello.jsp

<%@ page contentType="text/html; charset=UTF-8" %>

<html>

<head>

<title>Hello World</title>

</head>

<body>

   <h2>Hello, ${message}</h2>

</body>

</html>

运行结果:

巴特西

Spring MVC 示例

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