Question

我有两个表，一个名称“State”，另一个名为“City”

我的城市模型

@Entity
@Table(name = "city")
public class City implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Integer id;
    private String city;
    @ManyToOne
    private State state;

    public City() {
    }

    public Integer getId() {
        return this.id;
    }

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

    public String getCity() {
        return this.city;
    }

    public void setCity(String city) {
        this.city = city;
    }

    public State getState() {
        return this.state;
    }

    public void setState(State state) {
        this.state = state;
    }
}

我的州模式

@Entity
@Table(name = "state")
public class State implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Integer id;

    private String state;

    @OneToMany(mappedBy = "state")
    private List<City> cities;

    public State() {
    }

    public Integer getId() {
        return this.id;
    }

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

    public String getState() {
        return this.state;
    }

    public void setState(String state) {
        this.state = state;
    }

    public List<City> getCities() {
        return this.cities;
    }

    public void setCities(List<City> cities) {
        this.cities = cities;
    }

    public City addCity(City city) {
        getCities().add(city);
        city.setState(this);

        return city;
    }

    public City removeCity(City city) {
        getCities().remove(city);
        city.setState(null);

        return city;
    }
}

我的CityRepository

public interface CityRepository extends CrudRepository<City, Long> {
    List<City> findByState(String city);
}

我的StateRepository

public interface StateRepository extends CrudRepository<State, Long> {
    List<State> findByState(String state);
}

我的控制器

@Controller
public class IndexController {
    @Autowired
    StateRepository stateRepository;
    @Autowired
    CityRepository cityRepository;

    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String index(Model model) {
        model.addAttribute("title", "");

        Iterable<State> stateIterable = stateRepository.findAll();

        for (State state : stateIterable) {
            System.out.println(state.getState());
        }

        model.addAttribute("stateIterable", stateIterable);

        return "index";
    }
}

和Theymeleaf的相关代码

<div class="col-md-4">
    <div class="panel-group" id="panel-790692">
        <th:block th:each="state : ${stateIterable}">
            <div class="panel panel-default">
                <div class="panel-heading">
                    <a class="panel-title" data-toggle="collapse"
                        data-parent="#panel-790692"
                        th:href="|#panel-element-${#strings.replace(state,' ','-')}|"
                        th:text="${state.state}">State Name</a>
                </div>
                <th:block th:each="city : ${state.getCities}">
                    <div th:id="|panel-element-${#strings.replace(state,' ','-')}|"
                        class="panel-collapse collapse in">
                        <div class="panel-body" th:text="city.city"></div>
                    </div>
                </th:block>
            </div>

        </th:block>
    </div>
</div>

现在我收到此错误

在对象“

上找不到”属性或字段'getCities'

是否有可能使用Themeleaf获取城市并在城市中循环？如果是这样，怎么办呢？

Answer 1

尝试将${state.getCities}替换为${state.cities}

<th:block th:each="city : ${state.cities}">
    <div th:id="|panel-element-${#strings.replace(state,' ','-')}|"
                        class="panel-collapse collapse in">
        <div class="panel-body" th:text="city.city"></div>
    </div>
</th:block>

使用Thymeleaf获取列表中的列表

1 个答案: