second commit

springMvc/src/main/java/com/listener/ContextLoadListener.java

@@ -10,8 +10,11 @@ import javax.servlet.ServletContextListener;
 public class ContextLoadListener implements ServletContextListener {
     public void contextInitialized(ServletContextEvent sce) {
 //        ServletContextListener.super.contextInitialized(sce);
-        AnnotationConfigApplicationContext annotationConfigApplicationContext = new AnnotationConfigApplicationContext(SpringConfig.class);
         ServletContext servletContext = sce.getServletContext();
+        // 获取web.xml中默认设置参数
+        String initParameter = servletContext.getInitParameter("testName");
+        System.out.println(initParameter);
+        AnnotationConfigApplicationContext annotationConfigApplicationContext = new AnnotationConfigApplicationContext(SpringConfig.class);
         servletContext.setAttribute("app",annotationConfigApplicationContext);
         System.out.println("servletContextLoader");
     }

springMvc/src/main/webapp/WEB-INF/web.xml

@@ -28,6 +28,10 @@
   <listener>
     <listener-class>com.listener.ContextLoadListener</listener-class>
   </listener>
+  <context-param>
+    <param-name>testName</param-name>
+    <param-value>test1</param-value>
+  </context-param>
 
   <!-- Servlet Filters ================================================ -->
   <servlet>