spring - 以jsp形式设置radiobutton的路径

Question

我正在使用 Spring 应用程序 2.5。我有一个使用 jsp 上的对象列表显示的单选按钮列表。我想将单选按钮的路径设置为其各自的

objects in the list.
<form:form commandName = "artifact" name="formradioquest">
    <c:forEach var="questionArtifact" items="${artifact.questionGroupDetails}">
        <c:forEach var="answerOption" items="${questionArtifact.question.answerOptions}">
            <form:radiobutton path="choosenAnswers" value="${answerOption}" label="${answerOption.answerText}" cssClass="styled"/>
        </c:forEach>
    </c:forEach>
    .
.
</form:form>
    public class Artifact{
        List<questionGroupDetails> questionGroupDetails;
        .
        .
    }
    public class questionGroupDetails{
        Question question;
        AnswerOption choosenAnswers;
        .
        .

    }
    public class Question{
        List<AnswerOption> answerOptions;
        .
        .

    }

如何将单选按钮的路径变量设置为 QuestionGroupDetails 类中的“choosenAnswers”变量。因为当我使用这段代码时，它实际上需要 Artifact 中的“choosenAnswers”变量。请帮忙。

Answer 1

您可以使用varStatus <for:each ... />的属性(property)标签获取当前循环索引。

<c:forEach var="questionArtifact" items="${artifact.questionGroupDetails}" varStatus="row">
  <c:forEach var="answerOption" items="${questionArtifact.question.answerOptions}">
     <form:radiobutton path="choosenAnswers[${row.index}]" value="${answerOption}" label="${answerOption.answerText}" cssClass="styled"/>
   </c:forEach>
</c:forEach>

路径属性将此解析为 choosenAnswers.get(row.getIndex()) .