十 Thymeleaf语法详解-迭代遍历

1 th:each

@Controller
public class DemoController {
	
	@RequestMapping("/showInfo3")
	public String showInfo3(Model model) {
		List<User> list = new ArrayList<>();
		list.add(new User(1, "zhangsan", 20));
		list.add(new User(2, "lisi", 22));
		list.add(new User(3, "wangwu发", 25));
		// 需要一个Model对象
		model.addAttribute("list", list);
		return "index3";
	}
}

public class User {
	private Integer userId;
	private String username;
	private Integer userAge;

	public User() {
		super();
	}

	public User(Integer userId, String username, Integer userAge) {
		super();
		this.userId = userId;
		this.username = username;
		this.userAge = userAge;
	}

	public Integer getUserId() {
		return userId;
	}

	public void setUserId(Integer userId) {
		this.userId = userId;
	}

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public Integer getUserAge() {
		return userAge;
	}

	public void setUserAge(Integer userAge) {
		this.userAge = userAge;
	}
}

index3.html

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Thymeleaf入门-迭代遍历</title>
</head>
<body>
	<table border="1">
		<tr>
			<th>ID</th>
			<th>Name</th>
			<th>Age</th>
		</tr>
		<tr th:each="user:${list}">
			<td th:text="${user.userId}"></td>
			<td th:text="${user.username}"></td>
			<td th:text="${user.userAge}"></td>
		</tr>
	</table>
	<table border="1">
		<tr>
			<th>ID</th>
			<th>Name</th>
			<th>Age</th>
			<th>index</th>
			<th>count</th>
			<th>size</th>
			<th>even</th>
			<th>odd</th>
			<th>first</th>
			<th>last</th>
		</tr>
		<tr th:each="user,var : ${list}">
			<td th:text="${user.userId}"></td>
			<td th:text="${user.username}"></td>
			<td th:text="${user.userAge}"></td>
			<td th:text="${var.index}"></td>
			<td th:text="${var.count}"></td>
			<td th:text="${var.size}"></td>
			<td th:text="${var.even}"></td>
			<td th:text="${var.odd}"></td>
			<td th:text="${var.first}"></td>
			<td th:text="${var.last}"></td>
		</tr>
	</table>
</body>
</html>

@SpringBootApplication
public class App {
	public static void main(String[] args) {
		SpringApplication.run(App.class, args);
	}
}

十 Thymeleaf语法详解-迭代遍历

2 状态变量属性：

2.1 index

当前迭代器的索引，从0开始；

2.2 count

当前迭代对象的技术，从1开始；

2.3 size

被迭代对象的大小

2.4 even/odd

表示当前循环是否是偶数或奇数

2.5 first/last

当前循环的是否是第一条/最后一条，如果是，则返回true，否则返回false。

3 th:each迭代遍历map

@Controller
public class DemoController {
	@RequestMapping("/showInfo4")
	public String showInfo4(Model model) {
		Map<String, User> map = new HashMap<>();
		map.put("u1",new User(1, "zhangsan", 20));
		map.put("u2",new User(2, "lisi", 22));
		map.put("u3",new User(3, "wangwu发", 25));
		// 需要一个Model对象
		model.addAttribute("map", map);
		return "index4";
	}
}

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Thymeleaf入门-迭代遍历(map)</title>
</head>
<body>
	<table border="1">
		<tr>
			<th>ID</th>
			<th>Name</th>
			<th>Age</th>
		</tr>
		<tr th:each="maps:${map}">
			<span th:each="entry:${maps}">
				<td th:each="entry:${maps}" th:text="${entry.value.userId}"></td>
				<td th:each="entry:${maps}" th:text="${entry.value.username}"></td>
				<td th:each="entry:${maps}" th:text="${entry.value.userAge}"></td>
			</span>
		</tr>
	</table>
</body>
</html>

十 Thymeleaf语法详解-迭代遍历