springMVC框架建设进程

时间：2023-03-09 19:12:48
springMVC框架建设进程

1、创建Dynamic Web Project

2、导入spring和springmvc所须要的文件

3、配置web.xml文件

3.1 监听spring上下文容器

3.2 载入spring的xml文件到spring的上下文容器(spring-context.xml)

3.3 配置spring MVC的DispatcherServlet

3.4 载入spring MVC的xml到spring的上下文容器(springMVC-context.xml)

3.5 配置DispatcherServlet所须要拦截的 url（固定了HTTP的格式 如*.do）

4、配置spring的xml文件

主要配置链接数据库等信息

5、配置spring MVC的xml文件

5.1 载入spring的全局配置文件

5.2 扫描指定包下的全部类是注解生效

5.3 配置SpringMVC的视图渲染器

6、写Controller(TestController.java)

7、写jsp文件

运行流程个人总结：接收到请求后会扫描springMVC配置文件里指定的包中的类（controller），依据controller中的注解@RequestMapping("test")找到相应的jsp文件。

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"

  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

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

  http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

  <display-name></display-name>

  <!--1.  监听spring上下文容器 -->

  <listener>

    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

  </listener>

  <!-- 2. 载入spring的xml到spring的上下文容器 -->

  <context-param>

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

    <param-value>classpath:spring-context.xml</param-value>

  </context-param>

  <!-- 3. 配置spring MVC的DispatcherServlet -->

  <servlet>

    <servlet-name>springMVC</servlet-name>

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

    <!--4.  载入spring MVC的xml到spring的上下文容器 -->

    <init-param>

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

      <param-value>/WEB-INF/classes/springMVC-context.xml</param-value>

    </init-param>

    <!-- 启动载入该servlet -->

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

  </servlet>

  <!--5. 配置DispatcherServlet所须要拦截的 url -->

  <servlet-mapping>

    <servlet-name>springMVC</servlet-name>

    <url-pattern>*.do</url-pattern>

  </servlet-mapping>

</web-app>

spring-context.xml(这是一个简单的实例，没有涉及到连接数据库等操作，因此该文件不用配置什么东西都能够)

<?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:context="http://www.springframework.org/schema/context"

    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd

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

                 http://www.springframework.org/schema/context/spring-context-3.2.xsd

                http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">

    <!-- Root Context: defines shared resources visible to all other web components -->  

</beans>

springMVC-context.xml

<?xml version="1.0" encoding="UTF-8"?>

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

  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans"

  xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop"

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

  xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd

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

        http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 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">

  <!-- 载入Spring的全局配置文件 -->

  <beans:import resource="spring-context.xml" />

  <!-- SpringMVC配置 -->

  <!-- 通过component-scan 让Spring扫描org.swinglife.controller下的全部的类，让Spring的代码注解生效 -->

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

  <!-- 配置SpringMVC的视图渲染器， 让其前缀为:/ 后缀为.jsp  将视图渲染到/page/<method返回值>.jsp中 -->

  <beans:bean

    class="org.springframework.web.servlet.view.InternalResourceViewResolver"

    p:prefix="/page/" p:suffix=".jsp">

    </beans:bean>

</beans:beans>

TestController.java

package com.liuyunlong.controller;

import org.springframework.stereotype.Controller;

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

@Controller

public class TestController {

  @RequestMapping("test")

  public String test(){

    return "test";

  }

}

jsp文件

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

  <base href="<%=basePath%>">

  <title>My JSP 'test.jsp' starting page</title>

  <meta http-equiv="pragma" content="no-cache">

  <meta http-equiv="cache-control" content="no-cache">

  <meta http-equiv="expires" content="0">

  <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

  <meta http-equiv="description" content="This is my page">

  <!--

  <link rel="stylesheet" type="text/css" href="styles.css">

  -->

  </head>

  <body>

  Welcome to springMVC <br>

  </body>

</html>

原文 ：http://www.tuicool.com/articles/Nj6Bna

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