Spring 集成web環境
一、配置ContextLoaderListener 監聽器
1.maven坐標


org.springframework
spring-web
5.3.14

2.web.xml

<context-param><param-name>contextConfigLocation</param-name><param-value>classpath:applicationContext.xml</param-value></context-param><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener>

applicationContext.xml

<bean id="UserDao" class="com.study.dao.impl.userDaoImpl"></bean><bean id="Service" class="com.study.Service.impl.userServiceImpl"><property name="userDao" ref="UserDao"></property></bean>

二。使用WebApplicationContext 獲取上下文

@WebServlet(name = "testServlet", value = "/testServlet") public class testServlet extends HttpServlet {@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// ApplicationContext app = (ApplicationContext) request.getServletContext().getAttribute("app");ServletContext servletContext = this.getServletContext();WebApplicationContext webApplicationContext = WebApplicationContextUtils.getWebApplicationContext(servletContext);userService bean =webApplicationContext.getBean(userService.class);bean.inke();} 創作挑戰賽新人創作獎勵來咯，堅持創作打卡瓜分現金大獎

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