在

创建测试 Controller ，如下：

@Controller public class HelloController {      @GetMapping("/hello")     public String hello(HttpServletRequest request) {         // 构建测试数据         Map<String, Object> map = new HashMap<>();          UserModel userModel = new UserModel();         userModel.setId(1L);         userModel.setName("Spring Boot");         userModel.setAge(18);          map.put("user", userModel);          List<CourseModel> list = new ArrayList<>();          for (int i = 0; i < 2; i++) {             CourseModel courseMode = new CourseModel();             courseMode.setId((long) i);             courseMode.setName("Spring Boot：" + i);             courseMode.setAddress("课程地点：" + i);             list.add(courseMode);         }          map.put("list", list);          map.put("flag", true);          request.setAttribute("data", map);         return "hello";     } }

在此注册测试类中，进行数据初始化并输出至页面。

Thymeleaf 模版文件如下：

<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"       xmlns:th="http://www.thymeleaf.org"> <head>     <meta charset="UTF-8">     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">     <title>Hello Spring Boot</title>     <link rel="stylesheet" th:href="@{/static/css/bootstrap.min.css}"> </head> <body> <div class="container">     <div>用户信息：</div>     <table class="table table-dark">         <thead>         <tr>             <th scope="col">#</th>             <th scope="col">姓名</th>             <th scope="col">年龄</th>         </tr>         </thead>