如何将值从JQuery传递给servlet

Here is my Script:

这是我的脚本:

<script>
 $('#myModal').on('show.bs.modal', function(e) {

var metrics_key = $('.createAlarm').val();
var metrics_label = $(".createAlarm option:selected").text();

// Now you have the key and label in variables.

// Write the key into the textfield.
$('#myModal input[name="name"]').val(metrics_key);
// Change the HTML of an element to the label.
$('#myModal label[for="priority"]').html(metrics_label);
});

   var val = $('#priority').text();

   $.post("/<pjtname>/createAlarm", { val : "val"});
</script>

I have a createAlarm class in a JSP page and clicking on a button from that page, pops up the following modal:

我在JSP页面中有一个createAlarm类,然后单击该页面上的一个按钮,弹出以下模式:

 <!-- Modal- Create Alarm -->
  <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
  <div class="modal-dialog">
   <div class="modal-content">
    <div class="modal-header">
       <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
       <h4 class="modal-title">Create Alarm</h4>
     </div>
    <form action="/CMPE283_Project2/createAlarm" method="post" id="addcard" class="form-horizontal" role="form">
   <div class="modal-body" style="height: 170px;">
       <div class="form-group" style="height: 30px;">
            <label for="title" class="col-md-3 control-label">Name</label>
            <div class="col-md-9">
               <input type="text" class="form-control" name="alarmName">
            </div>
        </div>
         <div class="form-group" style="height: 30px; margin-bottom:30px;">
            <label for="title" class="col-md-3 control-label">Description</label>
            <div class="col-md-9">
               <textarea class="form-control" name="desc"></textarea>
            </div>
        </div>

           <div class="form-group">
            <label for="priority" id="priority" name="priority" class="col-md-3 control-label"> </label>
            <div class="col-md-9">
                <div class="col-md-3">
                <select name="metric" class="form-control">
                <option value="lessthan"><</option>
                <option value="greaterthan">></option>
                <option value="lessthanequalto"><=</option>
                <option value="greaterthanequalto">>=</option>
                </select>
                </div>
                <div class="col-md-3">
                    <input type="text" class="form-control" name="metricnum">
                </div>
               </div>
            </div>
           </div>

I want to pass the value of the label for priority to a servlet page. I tried:

我想将标签的值优先传递给servlet页面。我试过了:

String val = request.getParameter("val");

But, I am getting null value. Please help. Thanks.

但是,我的价值是空的。请帮忙。谢谢。

1 个解决方案

#1

$('#priority').text() to get value from html content .First Use post or get method inside Jquery to submit value to servlet. below link help to use get / post method. http://www.w3schools.com/jquery/jquery_ajax_get_post.asp

$('#priority')。text()从html内容中获取值.First在Jquery中使用post或get方法向servlet提交值。以下链接有助于使用get / post方法。 http://www.w3schools.com/jquery/jquery_ajax_get_post.asp

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如何将值从JQuery传递给servlet

1 个解决方案

#1

#1

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