SpringMVC入门

SpringMVC入门

环境搭建

1. 新建maven: webapp骨架工程

   • prom.xml中导入坐标

     控制spring的版本: <spring.version>5.2.8.RELEASE</spring.version>

     <properties>
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
       <maven.compiler.source>1.8</maven.compiler.source>
       <maven.compiler.target>1.8</maven.compiler.target>
        <!-- 对spring版本进行整体控制 -->
       <spring.version>5.2.8.RELEASE</spring.version>
     </properties>
     
     <dependencies>
       <dependency>
         <groupId>junit</groupId>
         <artifactId>junit</artifactId>
         <version>4.11</version>
         <scope>test</scope>
       </dependency>
     
       <!-- spring-context -->
       <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-context</artifactId>
         <version>${spring.version}</version>
       </dependency>
     
       <!-- spring-web -->
       <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-web</artifactId>
         <version>${spring.version}</version>
       </dependency>
         
       <!-- spring-webmvc -->
       <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-webmvc</artifactId>
         <version>${spring.version}</version>
       </dependency>
         
       <!-- selevt-api -->
       <dependency>
         <groupId>javax.servlet</groupId>
         <artifactId>servlet-api</artifactId>
         <version>2.5</version>
         <scope>provided</scope>
       </dependency>
         
       <!-- jsp-api -->
       <dependency>
         <groupId>javax.servlet.jsp</groupId>
         <artifactId>jsp-api</artifactId>
         <version>2.0</version>
         <scope>provided</scope>
       </dependency>
     </dependencies>
     

2. Resources目录下创建springmvc.xml配置文件

   • 导入springmvc的约束
   • 导入springcontext的约束

   <?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:mvc="http://www.springframework.org/schema/mvc"
          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
           http://www.springframework.org/schema/mvc
           http://www.springframework.org/schema/mvc/spring-mvc.xsd">
   
       <context:component-scan base-package="com.study.springmvc.controller"/>
   
       <!-- 视图解析器 -->
       <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
           <property name="prefix" value="/WEB-INF/pages/"/>
           <property name="suffix" value=".jsp"/>
       </bean>
   
       <!-- 开启SpringMVC注解支持 -->
       <mvc:annotation-driven/>
   
   </beans>
   

3. web.xml中配置前端控制器

   <!DOCTYPE web-app PUBLIC
    "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd" >
   
   <web-app>
     <display-name>Archetype Created Web Application</display-name>
   
     <!-- 配置前端控制器 -->
     <servlet>
       <servlet-name>dispatcherServlet</servlet-name>
       <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
       <!-- 初始化参数 -->
       <init-param>
         <!-- 加载配置文件 -->
         <param-name>contextConfigLocation</param-name>
         <param-value>classpath:springmvc.xml</param-value>
       </init-param>
       <!-- 服务器启动时创建servlet -->
       <load-on-startup>1</load-on-startup>
     </servlet>
   
     <!-- 路径映射 -->
     <servlet-mapping>
       <servlet-name>dispatcherServlet</servlet-name>
       <url-pattern>/</url-pattern>
     </servlet-mapping>
   </web-app>