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248
张博凯的Java学习笔记.md
248
张博凯的Java学习笔记.md
@@ -4485,22 +4485,20 @@ src/main/webapp/success.jsp
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</body>
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```
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###### 转发
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###### 转发（返回类型为String）
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src/main/java/org/example/web/UserController.java
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```java
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@RequestMapping("/add")
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public String addUser(Book book) {
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return "/success.jsp"; // 转发
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return "/success.jsp"; // 或者 return "forward:/success.jsp";
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}
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```
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###### 重定向
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###### 重定向（返回类型为String）
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src/main/java/org/example/web/UserController.java
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@@ -4511,9 +4509,36 @@ public String addUser(Book book) {
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}
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```
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###### 转发（返回类型为ModelAndView）
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src/main/java/org/example/web/UserController.java
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```java
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@RequestMapping("/add")
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public String addUser(Book book) {
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ModelAndView modelAndView = new ModelAndView("/success.jsp");
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// 或者 "forward:/success.jsp"
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return modelAndView;
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}
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```
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###### 重定向（返回类型为ModelAndView）
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src/main/java/org/example/web/UserController.java
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```java
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@RequestMapping("/add")
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public String addUser(Book book) {
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ModelAndView modelAndView = new ModelAndView("redirect:/success.jsp");
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return modelAndView;
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}
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```
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@@ -4521,6 +4546,219 @@ public String addUser(Book book) {
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> 模板引擎
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##### 介绍
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>**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。
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>
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>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。
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>
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>Thymeleaf 是现代 HTML5 JVM Web 开发的理想选择
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###### 官网
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https://www.thymeleaf.org/
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##### 导入依赖
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###### 导入thymeleaf依赖
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https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf/3.0.14.RELEASE
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```xml
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<!-- https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf -->
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<dependency>
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<groupId>org.thymeleaf</groupId>
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<artifactId>thymeleaf</artifactId>
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<version>3.0.14.RELEASE</version>
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</dependency>
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```
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###### 导入thymeleaf依赖
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https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf-spring4/3.0.14.RELEASE
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```xml
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<!-- https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf-spring4 -->
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<dependency>
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<groupId>org.thymeleaf</groupId>
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<artifactId>thymeleaf-spring4</artifactId>
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<version>3.0.14.RELEASE</version>
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</dependency>
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```
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##### 编写SpringMVC的核心配置文件
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src/main/resources/spring-servlet.xml
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```xml
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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:mvc="http://www.springframework.org/schema/mvc"
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xmlns:context="http://www.springframework.org/schema/context"
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xsi:schemaLocation="
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http://www.springframework.org/schema/context
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http://www.springframework.org/schema/context/spring-context.xsd
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http://www.springframework.org/schema/mvc
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http://www.springframework.org/schema/mvc/spring-mvc.xsd
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http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans.xsd">
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<!-- 声明注解配合 IOC --><!-- Spring管理的注解 -->
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<context:annotation-config></context:annotation-config>
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<!-- 扫描注解的包 -->
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<context:component-scan base-package="org.example.web"></context:component-scan>
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<!-- 声明MVC的注解 --><!-- MVC管理的注解 -->
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<mvc:annotation-driven></mvc:annotation-driven>
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<!-- 请求数据访问 --><!-- 默认的Servlet处理器 -->
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<mvc:default-servlet-handler></mvc:default-servlet-handler>
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<!--thymeleaf模板解析器-->
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<bean id="templateResolver" class="org.thymeleaf.spring4.templateresolver.SpringResourceTemplateResolver">
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<property name="prefix" value="/WEB-INF/templates/"></property>
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<property name="suffix" value=".html"></property>
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<property name="templateMode" value="HTML5"></property>
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<property name="cacheable" value="false"></property>
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<property name="characterEncoding" value="utf-8"></property>
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</bean>
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<bean id="templateEngine" class="org.thymeleaf.spring4.SpringTemplateEngine">
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<property name="templateResolver" ref="templateResolver"></property>
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</bean>
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<!--视图解析器-->
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<bean class="org.thymeleaf.spring4.view.ThymeleafViewResolver">
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<property name="templateEngine" ref="templateEngine"></property>
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<property name="characterEncoding" value="utf-8"></property>
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</bean>
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<!-- 配置静态资源放行 -->
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<mvc:resources mapping="/css/**" location="/css/"></mvc:resources>
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<mvc:resources mapping="/js/**" location="/js/"></mvc:resources>
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<mvc:resources mapping="/images/**" location="/images/"></mvc:resources>
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</beans>
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```
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##### 在web.xml中配置首页启动项
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src/main/webapp/WEB-INF/web.xml
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```xml
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<?xml version="1.0" encoding="UTF-8"?>
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<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
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version="4.0">
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<!-- 首页启动项 -->
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<welcome-file-list>
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<welcome-file>/WEB-INF/templates/login.html</welcome-file>
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</welcome-file-list>
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<servlet>
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<servlet-name>springmvc</servlet-name>
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<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
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<init-param> <!-- 加载SpringMVC的配置文件 -->
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<param-name>contextConfigLocation</param-name>
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<param-value>classpath:spring-servlet.xml</param-value>
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</init-param>
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</servlet>
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<servlet-mapping>
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<servlet-name>springmvc</servlet-name>
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<url-pattern>/</url-pattern>
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<!-- / 代表从根目录开始拦截 -->
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</servlet-mapping>
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</web-app>
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```
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##### 使用
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###### ****
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一般thymeleaf的模板 放在WEB-INF下面
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src/main/webapp/WEB-INF/templates/login.html
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```html
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<!DOCTYPE html>
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<html lang="en" xmlns:th="http://www.thymeleaf.org">
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<head>
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<meta charset="UTF-8">
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<title>Title</title>
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</head>
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<body>
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<h1>thymeleaf</h1>
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</body>
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</html>
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```
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##### 运用
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src/main/webapp/WEB-INF/templates/login.html
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```html
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<!DOCTYPE html>
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<html lang="en" xmlns:th="http://www.thymeleaf.org">
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<head>
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<meta charset="UTF-8">
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<title>Title</title>
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</head>
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<body>
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<h1>图书管理系统</h1>
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<form action="/user/add" method="get">
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<p>图书名称：<input type="text" name="bookName"> </p>
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<p>图书作者：<input type="text" name="author"> </p>
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<p>图书价格：<input type="text" name="price"> </p>
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<p><input type="submit" value="提交" > </p>
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</form>
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</body>
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</html>
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```
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src/main/webapp/WEB-INF/templates/success.html
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```html
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<!DOCTYPE html>
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<html lang="en" xmlns:th="http://www.thymeleaf.org">
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<head>
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<meta charset="UTF-8">
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<title>Title</title>
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</head>
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<body>
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<h1>图书管理系统</h1>
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<form action="/user/add" method="get">
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<p>图书名称：<input type="text" name="bookName"> </p>
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<p>图书作者：<input type="text" name="author"> </p>
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<p>图书价格：<input type="text" name="price"> </p>
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<p><input type="submit" value="提交" > </p>
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</form>
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</body>
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</html>
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```
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## 提升
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Reference in New Issue
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