java - 从Spring MVC中的 Controller 获取选定的选项值

我正在制作一个Spring MVC项目，而我的.jsp中有此表格

JSP

 <form:form action="/admin/assign/add" modelAttribute="cafeTable">
    <table>
        <tr>
            <td>
                <form:label path="tableNumber">
                    <spring:message text="Table's Number"/>
                </form:label>
            </td>
            <td>
            <form:select path="tableNumber" action = "select">
                <form:options items="${tableNumbers}"></form:options>
            </form:select>
            </td>
        </tr>
        <tr>
            <td>
                <form:label path="${user.fullName}">
                    <spring:message text="Waiter's name"/>
                </form:label>
            </td>
            <td>
            <form:select path="${user.fullName}" action = "select">
                <c:forEach items="${listUser}" var="user">
                    <option value="${user.fullName}">${user.fullName}</option>
                </c:forEach>
            </form:select>
            </td>
        </tr>
    </table>
    <br>
    <input type="submit" name="assign"
           value="<spring:message text="Assign"/>"/>
</form:form>

所以我有User和CafeTable模型，但是我的模型属性是CafeTable。

使用提交按钮，我需要在控制器中同时获取两个选定的值：

    @RequestMapping(value = "/admin/assign/add", params = "assign", method = RequestMethod.POST)
public String assign(@ModelAttribute("cafeTable") CafeTable cafeTable) {

    //set cafeTable's UserID field matching selected fullName value

    tableService.addTable(cafeTable);
    return "admin";
}

我怎样才能做到这一点？

最佳答案

 <form:form action="/admin/assign/add" modelAttribute="cafeTable">
    <table>
        <tr>
            <td>
                <form:label path="tableNumber">
                    <spring:message text="Table's Number"/>
                </form:label>
            </td>
            <td>
 <input type="hidden" value="${user.fullName}" name="fullname">
            <form:select path="tableNumber" action = "select">
                <form:options items="${tableNumbers}"></form:options>
            </form:select>
            </td>
        </tr>
        <tr>
            <td>
                <form:label path="${user.fullName}">
                    <spring:message text="Waiter's name"/>
                </form:label>
            </td>
            <td>
            <form:select path="${user.fullName}" action = "select">
                <c:forEach items="${listUser}" var="user">
                    <option value="${user.fullName}">${user.fullName}</option>
                </c:forEach>
            </form:select>
            </td>
        </tr>
    </table>
    <br>
    <input type="submit" name="assign"
           value="<spring:message text="Assign"/>"/>
</form:form>

如果您在CafeTable中没有fullname属性，请尝试在form：form之内添加一个隐藏字段，例如

<input type="hidden" value="${user.fullName}" name="fullname">

并将可选的请求参数添加到您的控制器中，如下所示

 @RequestMapping(value = "/admin/assign/add", method = RequestMethod.POST)
        public String save(@RequestParam("fullname") String fullname,@Valid @ModelAttribute("cafeTable") CafeTable cafeTable) {

//now you can access full name from fullname variable here

            ....
        }

我尚未测试此代码。