Spring Thymeleaf pass映射到表单

我有一个属性hashmap，在settings.html中传递给我的表单：

<form action="#" th:action="@{/settings/modify}" method="post" th:object="${properties}">
    <div th:each="property : ${properties}">
        <div class="form-group">
                    <label th:for="${property.key}" name="key" th:text="${property.key}">Property</label>
                    <input type="text"
                           class="form-control"
                           name="value"
                           th:id="${property.key}"
                           th:value="${property.value}" />
        </div>
    </div>
    <button type="submit" class="btn btn-default" name="action" value="save">Submit</button>
    <button type="reset" class="btn btn-default" name="action" value="reload">Reset</button>
</form>

---

我做错了什么？

据我所知，您不能使用

映射作为表单对象。您需要有一个对象，该对象的属性之一是
映射

public class PropertiesForm {
    private Map<String, String> properties = new HashMap<>();

    public Map<String, String> getProperties() {
        return properties;
    }

    public void setProperties(Map<String, String> properties) {
        this.properties = properties;
    }
}

及

表单的html应如下所示：

<form th:object="${form}" method="post">
    <div th:each="property : ${form.properties.entrySet()}">
        <div class="form-group">
            <label th:for="*{properties['__${property.key}__']}" th:text="${property.key}">Property</label>
            <input type="text" class="form-control" th:field="*{properties['__${property.key}__']}" />
        </div>
    </div>
</form>


财产
据我所知，您不能将
地图
用作表单对象。您需要有一个对象，该对象的属性之一是
映射

public class PropertiesForm {
    private Map<String, String> properties = new HashMap<>();

    public Map<String, String> getProperties() {
        return properties;
    }

    public void setProperties(Map<String, String> properties) {
        this.properties = properties;
    }
}

及

表单的html应如下所示：

<form th:object="${form}" method="post">
    <div th:each="property : ${form.properties.entrySet()}">
        <div class="form-group">
            <label th:for="*{properties['__${property.key}__']}" th:text="${property.key}">Property</label>
            <input type="text" class="form-control" th:field="*{properties['__${property.key}__']}" />
        </div>
    </div>
</form>


财产

// public String currentSettings(Model model) {
PropertiesForm form = new PropertiesForm();
form.setProperties(settingsService.getSettingsMap());
model.addAttribute("form", form);

public String changeProperties(@ModelAttribute("form") PropertiesForm form, RedirectAttributes redirectAttributes) {

<form th:object="${form}" method="post">
    <div th:each="property : ${form.properties.entrySet()}">
        <div class="form-group">
            <label th:for="*{properties['__${property.key}__']}" th:text="${property.key}">Property</label>
            <input type="text" class="form-control" th:field="*{properties['__${property.key}__']}" />
        </div>
    </div>
</form>