diff --git a/张博凯的Java学习笔记.md b/张博凯的Java学习笔记.md
index d89a4b1..34670e3 100644
--- a/张博凯的Java学习笔记.md
+++ b/张博凯的Java学习笔记.md
@@ -4485,22 +4485,20 @@ src/main/webapp/success.jsp
 </body>
 ```
 
-###### 转发
+###### 转发（返回类型为String）
 
 src/main/java/org/example/web/UserController.java
 
 ```java
 @RequestMapping("/add")
 public String addUser(Book book) {
-    return "/success.jsp"; // 转发
+    return "/success.jsp"; // 或者 return "forward:/success.jsp"; 
 }
 ```
 
 ![image-20220120220526068](张博凯的Java学习笔记.assets/image-20220120220526068.png)
 
-
-
-###### 重定向
+###### 重定向（返回类型为String）
 
 src/main/java/org/example/web/UserController.java
 
@@ -4511,9 +4509,36 @@ public String addUser(Book book) {
 }
 ```
 
+![image-20220120222121539](张博凯的Java学习笔记.assets/image-20220120222121539.png)
+
+###### 转发（返回类型为ModelAndView）
+
+src/main/java/org/example/web/UserController.java
+
+```java
+@RequestMapping("/add")
+public String addUser(Book book) {
+    ModelAndView modelAndView = new ModelAndView("/success.jsp");
+    // 或者 "forward:/success.jsp"
+    return modelAndView;
+}
+```
+
 ![image-20220120220526068](张博凯的Java学习笔记.assets/image-20220120220526068.png)
 
+###### 重定向（返回类型为ModelAndView）
 
+src/main/java/org/example/web/UserController.java
+
+```java
+@RequestMapping("/add")
+public String addUser(Book book) {
+    ModelAndView modelAndView = new ModelAndView("redirect:/success.jsp");
+    return modelAndView;
+}
+```
+
+![image-20220120222121539](张博凯的Java学习笔记.assets/image-20220120222121539.png)
 
 
 
@@ -4521,6 +4546,219 @@ public String addUser(Book book) {
 
 > 模板引擎
 
+##### 介绍
+
+>**Thymeleaf**是一个现代的服务器端 Java 模板引擎，适用于 Web 和独立环境。
+>
+>Thymeleaf 的主要目标是为您的开发工作流程带来优雅*的自然模板*——**HTML可以在浏览器中正确显示**，也可以用作静态原型，从而在开发团队中实现更强大的协作。
+>
+>Thymeleaf 是现代 HTML5 JVM Web 开发的理想选择
+
+###### 官网
+
+https://www.thymeleaf.org/
+
+
+
+##### 导入依赖
+
+###### 导入thymeleaf依赖
+
+https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf/3.0.14.RELEASE
+
+```xml
+<!-- https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf -->
+<dependency>
+    <groupId>org.thymeleaf</groupId>
+    <artifactId>thymeleaf</artifactId>
+    <version>3.0.14.RELEASE</version>
+</dependency>
+```
+
+###### 导入thymeleaf依赖
+
+https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf-spring4/3.0.14.RELEASE
+
+```xml
+<!-- https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf-spring4 -->
+<dependency>
+    <groupId>org.thymeleaf</groupId>
+    <artifactId>thymeleaf-spring4</artifactId>
+    <version>3.0.14.RELEASE</version>
+</dependency>
+```
+
+
+
+##### 编写SpringMVC的核心配置文件
+
+src/main/resources/spring-servlet.xml
+
+```xml
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns:mvc="http://www.springframework.org/schema/mvc"
+       xmlns:context="http://www.springframework.org/schema/context"
+       xsi:schemaLocation="
+       http://www.springframework.org/schema/context
+       http://www.springframework.org/schema/context/spring-context.xsd
+       http://www.springframework.org/schema/mvc
+       http://www.springframework.org/schema/mvc/spring-mvc.xsd
+       http://www.springframework.org/schema/beans
+       http://www.springframework.org/schema/beans/spring-beans.xsd">
+
+    <!-- 声明注解配合 IOC --><!-- Spring管理的注解 -->
+    <context:annotation-config></context:annotation-config>
+
+    <!-- 扫描注解的包 -->
+    <context:component-scan base-package="org.example.web"></context:component-scan>
+
+    <!-- 声明MVC的注解 --><!-- MVC管理的注解 -->
+    <mvc:annotation-driven></mvc:annotation-driven>
+
+    <!-- 请求数据访问 --><!-- 默认的Servlet处理器 -->
+    <mvc:default-servlet-handler></mvc:default-servlet-handler>
+
+    <!--thymeleaf模板解析器-->
+    <bean id="templateResolver" class="org.thymeleaf.spring4.templateresolver.SpringResourceTemplateResolver">
+        <property name="prefix" value="/WEB-INF/templates/"></property>
+        <property name="suffix" value=".html"></property>
+        <property name="templateMode" value="HTML5"></property>
+        <property name="cacheable" value="false"></property>
+        <property name="characterEncoding" value="utf-8"></property>
+    </bean>
+
+    <bean id="templateEngine" class="org.thymeleaf.spring4.SpringTemplateEngine">
+        <property name="templateResolver" ref="templateResolver"></property>
+    </bean>
+
+    <!--视图解析器-->
+    <bean class="org.thymeleaf.spring4.view.ThymeleafViewResolver">
+        <property name="templateEngine" ref="templateEngine"></property>
+        <property name="characterEncoding" value="utf-8"></property>
+    </bean>
+
+    <!-- 配置静态资源放行 -->
+    <mvc:resources mapping="/css/**" location="/css/"></mvc:resources>
+    <mvc:resources mapping="/js/**" location="/js/"></mvc:resources>
+    <mvc:resources mapping="/images/**" location="/images/"></mvc:resources>
+</beans>
+```
+
+
+
+##### 在web.xml中配置首页启动项
+
+src/main/webapp/WEB-INF/web.xml
+
+```xml
+<?xml version="1.0" encoding="UTF-8"?>
+<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
+         version="4.0">
+
+    <!-- 首页启动项 -->
+    <welcome-file-list>
+        <welcome-file>/WEB-INF/templates/login.html</welcome-file>
+    </welcome-file-list>
+    
+    <servlet>
+        <servlet-name>springmvc</servlet-name>
+        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
+        <init-param> <!-- 加载SpringMVC的配置文件 -->
+            <param-name>contextConfigLocation</param-name>
+            <param-value>classpath:spring-servlet.xml</param-value>
+        </init-param>
+    </servlet>
+    <servlet-mapping>
+        <servlet-name>springmvc</servlet-name>
+        <url-pattern>/</url-pattern>
+        <!-- / 代表从根目录开始拦截 -->
+    </servlet-mapping>
+</web-app>
+```
+
+
+
+##### 使用
+
+###### ****
+
+一般thymeleaf的模板 放在WEB-INF下面
+
+src/main/webapp/WEB-INF/templates/login.html
+
+```html
+<!DOCTYPE html>
+<html lang="en" xmlns:th="http://www.thymeleaf.org">
+<head>
+    <meta charset="UTF-8"> 
+    <title>Title</title>
+</head>
+<body>
+    <h1>thymeleaf</h1>
+</body>
+</html>
+```
+
+![image-20220120231646089](张博凯的Java学习笔记.assets/image-20220120231646089.png)
+
+
+
+##### 运用
+
+src/main/webapp/WEB-INF/templates/login.html
+
+```html
+<!DOCTYPE html>
+<html lang="en" xmlns:th="http://www.thymeleaf.org">
+<head>
+    <meta charset="UTF-8">
+    <title>Title</title>
+</head>
+<body>
+<h1>图书管理系统</h1>
+<form action="/user/add" method="get">
+    <p>图书名称：<input type="text" name="bookName"> </p>
+    <p>图书作者：<input type="text" name="author"> </p>
+    <p>图书价格：<input type="text" name="price"> </p>
+    <p><input type="submit" value="提交" > </p>
+</form>
+</body>
+</html>
+```
+
+src/main/webapp/WEB-INF/templates/success.html
+
+```html
+<!DOCTYPE html>
+<html lang="en" xmlns:th="http://www.thymeleaf.org">
+<head>
+    <meta charset="UTF-8">
+    <title>Title</title>
+</head>
+<body>
+<h1>图书管理系统</h1>
+<form action="/user/add" method="get">
+    <p>图书名称：<input type="text" name="bookName"> </p>
+    <p>图书作者：<input type="text" name="author"> </p>
+    <p>图书价格：<input type="text" name="price"> </p>
+    <p><input type="submit" value="提交" > </p>
+</form>
+</body>
+</html>
+```
+
+![image-20220120232421282](张博凯的Java学习笔记.assets/image-20220120232421282.png)
+
+![image-20220120232442818](张博凯的Java学习笔记.assets/image-20220120232442818.png)
+
+
+
+
+
 
 
 ## 提升