從thymeleaf中的列舉中獲取值

我在 thymeleaf 中使用 enum 選擇選項，但我看不到它們或將它們插入到資料庫中。下拉串列中沒有任何內容。

<div class="form-group">
     <label for="roomType">Rooms</label>
     <select class="form-select selectpicker show-tick" th:field="*{property.roomType}" id="rooms">
          <option value="">Nothing selected</option>
          <option th:each="property.roomType : ${T(com.realestate.petfriendly.entity.RoomType).values()}"
                  th:value="${property.roomType}"
                  th:text="${property.roomType}">
          </option>
     </select>
 </div>

班級

@Enumerated(EnumType.STRING)
@Column(name = "RoomType")
private RoomType roomType;

和列舉

public enum RoomType {
        
    GARSONJERA("garsonjera"), JEDNOIPOSOBAN("jednoiposoban"), DVOSOBAN("dvosoban"),
    DVOIPOSOBAN("dvoiposoban"), TROSOBAN("trosoban"), TROIPOSOBAN("troiposoban"),
    CERVOROSOBAN("cetvorosoban"), CETVOROIPOSOBAN("cetvoroiposoban"), VISESOBAN("visesoban");

    private String roomType;

    private RoomType(String roomType) {
        this.roomType = roomType;
    }

    public String getRoomType() {
        return this.roomType;
    }

}

我不確定為什么它不顯示任何內容

uj5u.com熱心網友回復：

這對我來說是可用的。

班級

@Setter
@Getter
public class Demo {

    private RoomType roomType;
}

列舉

public enum RoomType {

    GARSONJERA("garsonjera"), JEDNOIPOSOBAN("jednoiposoban"), DVOSOBAN("dvosoban"),
    DVOIPOSOBAN("dvoiposoban"), TROSOBAN("trosoban"), TROIPOSOBAN("troiposoban"),
    CERVOROSOBAN("cetvorosoban"), CETVOROIPOSOBAN("cetvoroiposoban"), VISESOBAN("visesoban");

    private final String roomType;

    private RoomType(String roomType) {
        this.roomType = roomType;
    }

    public String getRoomType() {
        return this.roomType;
    }
}

控制器：

@Controller
@RequestMapping( "test")
public class TestController {

    @GetMapping("demo")
    public String demo(Model model){
        Demo demo = new Demo();
        demo.setRoomType(RoomType.CERVOROSOBAN);
        model.addAttribute(demo);
        return "test/demo";
    }
}

HTML：

<div class="form-group">
    <label for="rooms">Rooms</label>
    <select class="form-select selectpicker show-tick" th:field="*{demo.roomType}" id="rooms">
        <option value="">Nothing selected</option>
        <option th:each="value : ${T(com.bluray.boot.business.test.RoomType).values()}"
                th:value="${value}"
                th:text="${value}">
        </option>
    </select>
</div>

我使用 spring-boot 2.3.6.release

uj5u.com熱心網友回復：

問題就在這里

<option th:each="!!!!property.roomType!!!!<---- : ${T(com.realestate.petfriendly.entity.RoomType).values()}"
                  th:value="${property.roomType}"
                  th:text="${property.roomType}">
          </option>

雖然應該是

 <option th:each="property : ${T(com.realestate.petfriendly.entity.RoomType).values()}"
                  th:value="${property.roomType}"
                  th:text="${property.roomType}">
          </option>

您遍歷串列并獲取每個元素。在each迭代期間您不會訪問該屬性的嵌套元素。您稍后在通過以下方式訪問該屬性時已執行此操作th:value="${property.roomType}"

標籤：爪哇 弹簧靴 枚举

上一篇：如何在執行springboot應用程式之前清除日志檔案？

下一篇：JavaSpring啟動專案的資料庫錯誤