1、环境配置

（1）引入thymeleaf

  1.         <dependency>
  2.             <groupId>org.springframework.boot</groupId>
  3.             <artifactId>spring-boot-starter-thymeleaf</artifactId>
  4.         </dependency>

（2）自动配置

@Configuration(proxyBeanMethods = false)
@EnableConfigurationProperties(ThymeleafProperties.class)
@ConditionalOnClass({ TemplateMode.class, SpringTemplateEngine.class })
@AutoConfigureAfter({ WebMvcAutoConfiguration.class, WebFluxAutoConfiguration.class })
public class ThymeleafAutoConfiguration

配置好的信息

  • 配置的属性都在 ThymeleafProperties中
  • 配置好了SpringResourceTemplateResolver资源模板解析器
  • 配置好了SpringTemplateEngine模板引擎

  • 默认模板存放在

      public static final String DEFAULT_PREFIX = "classpath:/templates/";

  public static final String DEFAULT_SUFFIX = ".html";

（3）开发示例

  • 添加路由请求地址

      @GetMapping("/haha")
  public String haha(Model model){
      model.addAttribute("link","https://www.daijunyi.com");
      return "haha";
  }

  • 创建html页面 haha.html存放在templates下

    <!DOCTYPE html>
<html lang="en" xmlns:th="https://www.thymeleaf.org">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<body>
  <a href="www.baidu.com" th:href="${link}">百度知道</a>
</body>
</html>

    （4）示例2 登录页

      @GetMapping("/login")
  public String loginPage(){
      return "login";
  }

  @PostMapping("/login")
  public String loginPost(User user, HttpSession session, Model model){
      if (StringUtils.hasText(user.getUsername()) && "123456".equals(user.getPassword())){
          session.setAttribute("user",user);
          return "redirect:/index.html";
      }else{
          model.addAttribute("msg","账号密码错误");
          return "login";
      }
  }

  @GetMapping("/index.html")
  public String indexPage(HttpSession session,Model model){
      if (session.getAttribute("user") != null){
          return "index";
      }else{
          model.addAttribute("msg","请重新登录");
          return "login";
      }
  }