Question

也许这个问题被问了很多，但问题不一样，所以这是我的问题，我希望有人可以提供帮助。

从数据库中检索了一些研究行并将结果返回到List，我已绑定到我的Spring MVC Controller Model：

if(!result.hasErrors())
{
  try{
    List<Question> questionlist = questionservice.findByCategoryAndLevel(questionform.getCategory(),questionform.getLevel());
    model.addAttribute("questionlist",questionlist);
    return "addExam";
  }catch(NullPointerException e)
  {
    return "redirect:/admin/addexam";
  }
}

以下是我的观点：

<form:form action="addexam" method="POST" modelAttribute="questionlist">
  <table class="table table-striped table-bordered table-hover" id="sample_1">
    <thead>
      <tr>
        <th class="table-checkbox">
          <input type="checkbox" class="group-checkable" data-set="#sample_1 .checkboxes"/>
        </th>
        <th>
          Category
        </th>
        <th>
          level
        </th>
        <th>
          Type of question
        </th>
        <th>
          Status
        </th>
        <th>
          &nbsp;
        </th>
      </tr>
    </thead>
    <tbody>
      <c:forEach items="${questionlist}" var="question">
        <c:choose>
          <c:when test="${question.isVisible()}">
            <tr class="odd gradeX">
              <td>
                <input type="checkbox"  class="checkboxes" />
              </td>
              <td>
                ${question.category.getCategoryName() }
              </td>
              <td>
                ${question.level }
              </td>
              <c:choose>
                <c:when test="${question.isSingleChoiceQuestion() }">
                  <td>Question à choix unique</td>
                </c:when>
                <c:otherwise>
                  <td>Question à choix mutiple</td>
                </c:otherwise>
              </c:choose>
              <td class="center">
                <c:choose>
                  <c:when test="${question.getState() == 'Desactivated'}">
                    <span class="label label-sm label-default"> Desactivated </span>
                  </c:when>
                  <c:when test="${question.getState() == 'Activated'}">
                    <span class="label label-sm label-success"> Activated </span>
                  </c:when>
                  <c:when test="${question.getState() == 'Pending'}">
                    <span class="label label-sm label-warning"> Pending </span>
                  </c:when>
                </c:choose>
              </td>
              <td>
                <a href="${pageContext.request.contextPath }/admin/question?view=${question.idQuestion}" class="btn btn-xs btn-default" target="_blank">View</a>
              </td>
            </tr>
          </c:when>
        </c:choose>
      </c:forEach>
    </tbody>
  </table>
</form:form>

现在我该如何提交所选项目？

Answer 1

是的，我想显示问题列表，然后通过复选框选择我需要的问题列表

我创建了一个表单，它包含了Idquestions列表

public class checkedquestion {

    private List<Long> listIdQuestion ;

    //getter & setter
   }

然后将路径属性添加到复选框，如下所示：

<form:form action="submit" method="POST" modelAttribute="checkedquestion">  

// .......

     <td>
        <form:checkbox  value="${question.idQuestion}" path="listIdQuestion"/>
     </td>

通过提交id列表我有我需要的那些：

public String add(@ModelAttribute ("checkedquestion") @Valid CheckedQuestion checkedquestion , BindingResult result )
    {
        if(!result.hasErrors())
         {
                List<Long> list = checkedquestion.getListIdQuestion();
                List<Question> questionlist = questionservice.getQuestion(list);
         }
     }

似乎工作正常

Answer 2

输入ID /名称以输入复选框类型，如下所示

<input type="checkbox"  class="checkboxes" id="someId" name="someId" value="uniqueValueToEachCheckBox"/>

然后在提交表单后，您可以在控制器中访问所选的复选框值，如下所示。

request.getParameterValues("someId");

提交复选框值Spring MVC

2 个答案: