Spring 项目骨架

1. IDEA → New Project → Maven → 勾选 "Create from archetype" → maven-archetype-webapp

   GroupId:com.lib ArtifactId：library

2. pom.xml 引入 Spring 5.3.x（非 Boot）

   <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.3.37</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>4.0.1</version> <scope>provided</scope> </dependency> </dependencies>

3. Java Config 方式初始化容器

   src/main/java/com/lib/config/AppConfig.java

   @Configuration
   @ComponentScan("com.lib")
   public class AppConfig { }

4. web.xml（最简）

   <web-app> <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextClass</param-name> <param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value> <param-name>contextConfigLocation</param-name> <param-value>com.lib.config.AppConfig</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>

5. 启动测试

   • IDEA 配置 Tomcat 10 → Deployment 选 library:war exploded

   • 浏览器访问 http://localhost:8080/library/ 出现 404 即成功（还没控制器）。