diff --git a/README.md b/README.md
index 3768ff02..3d67fe1e 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,7 @@
 
 * [《芋道 Spring Boot 快速入门》](http://www.iocoder.cn/Spring-Boot/quick-start/?github)
 * [《芋道 Spring Boot 自动配置原理》](http://www.iocoder.cn/Spring-Boot/autoconfigure/?github) 对应 [lab-47](https://github.com/YunaiV/SpringBoot-Labs/tree/master/lab-47)
+* [《芋道 Spring Boot 芋道 Spring Boot Jar 启动原理》](http://www.iocoder.cn/Spring-Boot/jar/?github)
 
 ## 开发工具
 
diff --git a/lab-39/lab-39-demo/pom.xml b/lab-39/lab-39-demo/pom.xml
index 199ba33d..b0bec084 100644
--- a/lab-39/lab-39-demo/pom.xml
+++ b/lab-39/lab-39-demo/pom.xml
@@ -18,6 +18,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
+<!--        <dependency>-->
+<!--            <groupId>org.springframework.boot</groupId>-->
+<!--            <artifactId>spring-boot-loader</artifactId>-->
+<!--        </dependency>-->
     </dependencies>
 
     <build>
diff --git a/lab-39/lab-39-demo/src/main/java/cn/iocoder/springboot/lab39/skywalkingdemo/Application.java b/lab-39/lab-39-demo/src/main/java/cn/iocoder/springboot/lab39/skywalkingdemo/Application.java
index 62665a61..6bf7234d 100644
--- a/lab-39/lab-39-demo/src/main/java/cn/iocoder/springboot/lab39/skywalkingdemo/Application.java
+++ b/lab-39/lab-39-demo/src/main/java/cn/iocoder/springboot/lab39/skywalkingdemo/Application.java
@@ -3,10 +3,47 @@ package cn.iocoder.springboot.lab39.skywalkingdemo;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
+import java.io.IOException;
+import java.net.URISyntaxException;
+
 @SpringBootApplication
 public class Application {
 
-    public static void main(String[] args) {
+    public static void main(String[] args) throws URISyntaxException, IOException {
+//        ProtectionDomain protectionDomain = Launcher.class.getProtectionDomain();
+//        CodeSource codeSource = protectionDomain.getCodeSource();
+//        URI location = (codeSource != null) ? codeSource.getLocation().toURI() : null;
+//        String path = (location != null) ? location.getSchemeSpecificPart() : null;
+//        if (path == null) {
+//            throw new IllegalStateException("Unable to determine code source archive");
+//        }
+//        File root = new File(path);
+//        System.out.println(root + "" + root.isDirectory());
+//        // 创建 Archive 对象
+//        Archive archive = new JarFileArchive(root);
+//        // 创建 EntryFilter 对象
+//        Archive.EntryFilter filter = new Archive.EntryFilter() {
+//
+//            static final String BOOT_INF_CLASSES = "BOOT-INF/classes/";
+//
+//            static final String BOOT_INF_LIB = "BOOT-INF/lib/";
+//
+//            @Override
+//            public boolean matches(Archive.Entry entry) {
+//                // 如果是目录的情况，只要 BOOT-INF/classes/ 目录
+//                if (entry.isDirectory()) {
+//                    return entry.getName().equals(BOOT_INF_CLASSES);
+//                }
+//                // 如果是文件的情况，只要 BOOT-INF/lib/ 目录下的 `jar` 包
+//                return entry.getName().startsWith(BOOT_INF_LIB);
+//            }
+//
+//        };
+//        // 执行读取
+//        for (Archive item : archive.getNestedArchives(filter)) {
+//            System.out.println(item.getUrl());
+//        }
+
         SpringApplication.run(Application.class, args);
     }
 
diff --git a/pom.xml b/pom.xml
index f94b8e36..71acae86 100644
--- a/pom.xml
+++ b/pom.xml
@@ -32,7 +32,7 @@
 <!--        <module>lab-19</module>-->
 <!--        <module>lab-20</module>-->
 <!--        <module>lab-21</module>-->
-<!--        <module>lab-22</module>-->
+        <module>lab-22</module>
 <!--        <module>lab-23</module>-->
 <!--        <module>lab-24</module>-->
 <!--        <module>lab-25</module>-->