Question

我正在尝试修改一个实体，该实体具有一对多关系映射到它的对象列表，但是由于以下错误它总是失败。

[请求处理失败；嵌套异常为   org.springframework.beans.InvalidPropertyException：无效的属性   Bean类的“ storeClosureCashSet [0]”   [application.model.StoreClosure]：属性的获取程序   'storeClosureCashSet'引发异常；嵌套异常为   根本原因的java.lang.reflect.InvocationTargetException]

java.lang.NullPointerException：空

我一直在尝试其他几种选择，但这根本行不通。我无法更改列表，我需要将其保留为集合。

当我加载页面时，输入设置正确，并且一切都按原样显示，但是在提交表单时总是会发生错误。您可以在下面查看我的代码。

所以我在Thymeleaf中得到了以下形式。

<form form id="closure-form" th:object="${closure}" th:action="@{/url}" method="post">
    <input hidden="hidden" th:field=*{id}/>
    <!-- Some other fields -->
    <div class="full-width align-center no-margins">
        <th:block th:each="item, cashStat : *{storeClosureCashSet}">
            <div class="half-width no-margins align-center">
                <input hidden="hidden" class="hidden" th:field="*{storeClosureCashSet[__${cashStat.index}__].storeClosureCashPK}"/>
                <input hidden="hidden" class="hidden" th:field="*{storeClosureCashSet[__${cashStat.index}__].storeClosureFK}"/>
                <input hidden="hidden" class="hidden" th:field="*{storeClosureCashSet[__${cashStat.index}__].exchangeRate}"/>
                <input hidden="hidden" class="hidden" th:field="*{storeClosureCashSet[__${cashStat.index}__].currency}"/>
                <input class="minimalist-input minimalist-number-input minimalist-number-format align-center currency-crc" th:field="*{storeClosureCashSet[__${cashStat.index}__].amount}"/>
            </div>
        </th:block>
    </div>
</form>

这是实体的代码。

public class StoreClosure {

    private Long id;
    // Some other fields.
    // Getters and setters of some other fields.

    private Set<StoreClosureCash> storeClosureCashSet;

    public Set<StoreClosureCash> getStoreClosureCashSet() {
        return new HashSet<StoreClosureCash>(this.storeClosureCashSet);
    }

}

我的Hibernate配置。

<hibernate-mapping>
    <class name="application.model.StoreClosure" table="STORE_CLOSURE" schema="dbo" catalog="DB">
        <id name="storeClosurePK">
            <column name="id" sql-type="bigint"/>
            <generator class="identity"/>
        </id>
        <!-- Some other fields -->
        <set name="storeClosureCashSet" inverse="true" lazy="true" fetch="join">
            <key>
                <column name="store_closure_fk" sql-type="long" not-null="true"/>
            </key>
            <one-to-many class="application.model.StoreClosureCash"/>
        </set>
</hibernate-mapping>

这就是我的控制器代码。

@PostMapping(value = "/url")
public String updateStoreClosure(@ModelAttribute StoreClosure storeClosure) {
    // Some code.
    return "page";
}

我真的需要了解发生了什么。非常感谢您的帮助。

Spring MVC-将对象列表绑定到我的for表单时出错

0 个答案: