diff --git a/docs/tasks/chapter04-tasks.md b/docs/tasks/chapter04-tasks.md
index 88e1ea0..ba7de6b 100644
--- a/docs/tasks/chapter04-tasks.md
+++ b/docs/tasks/chapter04-tasks.md
@@ -17,8 +17,6 @@
 
 #### 任务步骤
 
-
-
 1. **创建项目**
     - 使用IntelliJ IDEA创建一个新的Java项目。
     - 根据servlet项目要求，创建目录和文件。
diff --git a/examples/chapter04/WEB-INF/lib/jackson-annotations-2.18.0.jar b/examples/chapter04/webapp/WEB-INF/lib/jackson-annotations-2.18.0.jar
similarity index 100%
rename from examples/chapter04/WEB-INF/lib/jackson-annotations-2.18.0.jar
rename to examples/chapter04/webapp/WEB-INF/lib/jackson-annotations-2.18.0.jar
diff --git a/examples/chapter04/WEB-INF/lib/jackson-core-2.18.0.jar b/examples/chapter04/webapp/WEB-INF/lib/jackson-core-2.18.0.jar
similarity index 100%
rename from examples/chapter04/WEB-INF/lib/jackson-core-2.18.0.jar
rename to examples/chapter04/webapp/WEB-INF/lib/jackson-core-2.18.0.jar
diff --git a/examples/chapter04/WEB-INF/lib/jackson-databind-2.18.0.jar b/examples/chapter04/webapp/WEB-INF/lib/jackson-databind-2.18.0.jar
similarity index 100%
rename from examples/chapter04/WEB-INF/lib/jackson-databind-2.18.0.jar
rename to examples/chapter04/webapp/WEB-INF/lib/jackson-databind-2.18.0.jar
diff --git a/examples/chapter04/WEB-INF/lib/javax.servlet-api-3.1.0.jar b/examples/chapter04/webapp/WEB-INF/lib/javax.servlet-api-3.1.0.jar
similarity index 100%
rename from examples/chapter04/WEB-INF/lib/javax.servlet-api-3.1.0.jar
rename to examples/chapter04/webapp/WEB-INF/lib/javax.servlet-api-3.1.0.jar
diff --git a/examples/chapter04/WEB-INF/web.xml b/examples/chapter04/webapp/WEB-INF/web.xml
similarity index 100%
rename from examples/chapter04/WEB-INF/web.xml
rename to examples/chapter04/webapp/WEB-INF/web.xml
diff --git a/examples/chapter04/login.jsp b/examples/chapter04/webapp/login.jsp
similarity index 100%
rename from examples/chapter04/login.jsp
rename to examples/chapter04/webapp/login.jsp
diff --git a/examples/chapter04/login2.jsp b/examples/chapter04/webapp/login2.jsp
similarity index 100%
rename from examples/chapter04/login2.jsp
rename to examples/chapter04/webapp/login2.jsp
diff --git a/examples/chapter04/login3.html b/examples/chapter04/webapp/login3.html
similarity index 100%
rename from examples/chapter04/login3.html
rename to examples/chapter04/webapp/login3.html
diff --git a/examples/chapter04/welcome.jsp b/examples/chapter04/webapp/welcome.jsp
similarity index 100%
rename from examples/chapter04/welcome.jsp
rename to examples/chapter04/webapp/welcome.jsp