回答編集履歴
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ControllerとThymeleafテンプレートの実装例を追記。
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[Thymeleafでセレクトボックスを使う](https://qiita.com/alpha_pz/items/e5d1872fbb8f2b3d3f3d) が参考になるでしょうか。
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例えば、月を入力させたいのであれば、
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Controllerの実装：
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```java
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import java.util.Arrays;
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import java.util.List;
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import org.springframework.stereotype.Controller;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.servlet.ModelAndView;
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@Controller
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@RequestMapping("wheel")
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public class SampleController {
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@GetMapping("")
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public ModelAndView display(ModelAndView mnv) {
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List<Integer> months = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12);
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mnv.addObject("targetMonth", 7);
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mnv.addObject("months", months);
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mnv.setViewName("wheel");
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return mnv;
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}
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}
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```
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ここから表示する wheel.html にて、Controllerで定義した years の内容を繰り返し表示する方法は、
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※ targetMonth は 初期表示させる月の値
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```html
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<!DOCTYPE html>
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<html xmlns:th="http://www.thymeleaf.org">
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<head>
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<meta charset="UTF-8">
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<title>Insert title here</title>
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</head>
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<body>
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<select name="month">
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<option th:each="month : ${months}"
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th:value="${month}"
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th:selected="${month == targetMonth}"
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th:text="${month}"></option>
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</select>
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</body>
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</html>
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```
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