spring boot 中thymeleaf 模板引擎常见用法_使用thymeleaf模板引擎的视图文件,以( )作为扩展名。-优快云博客

本文链接：https://blog.youkuaiyun.com/zdt888/article/details/115353122

以下是thymeleaf 常用写法：

控制器端变量渲染到模板写法
控制器方法需要一个ModelMap来传递变量

@Controller
public class Hello {
    @GetMapping(value="/hello")
    public String index(ModelMap map){
       map.addAttribute("msg","this is a message");
       return  "hello";
    }
}

模板写法

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"
      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">
<head>
    <title>Hello World!</title>
</head>
<body>
<h1>hello</h1>
<h4 th:text="${msg}">msg</h4>
</body>
</html>

条件判断写法：

<span th:if="${show} ">显示此信息</span>

-多条件可以用switch

<div th:switch="${show}">
    <p th:case="1">这是第一条消息</p>
    <p th:case="2">这是第二条消息</p>
</div>

遍历数组：
控制器端代码：

@Controller
public class Hello {
    @GetMapping(value="/hello")
    public String index(ModelMap map){
        List<User> userList=new ArrayList<User>();
        userList.add(new User("Tom",1l,1));
        userList.add(new User("Jack",2l,21));
        userList.add(new User("Rose",3l,11));
        userList.add(new User("Nock",4l,18));
        map.addAttribute("users",userList);
       return  "hello";
    }
}

User实体类

public class User {
    private Long id;
    private String name;
    private Integer age;

    public User(String name,Long id,Integer age){
        this.name=name;
        this.age=age;
        this.id=id;
    }

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String toString(){
        return "name="+getName()+" age="+getAge()+" id="+getId();
    }
}

模板中把用户数据遍历出来写在一个表格里

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"
      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">
<head>
    <title>Hello World!</title>
</head>
<body>
<h1>hello</h1>
<table>
    <tr th:each="user : ${users}">
        <td th:text="${user.name}">tyrone</td>
        <td th:text="${user.age}">18</td>
        <td th:text="${user.id}">18</td>
    </tr>
</table>
</body>
</html>

-设置任意自定义属性

<span th:goods_id="${goods_id}">这是一个消息</span>

显示session中的内容

@Controller
public class Hello {
    @GetMapping(value="/hello")
    public String index(HttpSession session){
        session.setAttribute("msg","这是一个sesson消息");      
       return  "hello";
    }
}

模板

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"
      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">
<head>
    <title>Hello World!</title>
</head>
<body>
<h1>hello</h1>
<span th:text="${session.msg}">占个位</span>
</body>
</html>