将变量从 JavaScript 传递到 servlet
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Passing variable from JavaScript to servlet
提问by
I've used JavaScript in my JSP page to process get data of the div tag:
我在我的 JSP 页面中使用了 JavaScript 来处理获取 div 标签的数据：
var script = ace.edit("editor");
var myDivText = script.getValue();
Now I want to pass myDivText to my servlet.java. Till today I've passed it as below
现在我想将 myDivText 传递给我的servlet.java. 直到今天我已经通过它如下
window.open('http://XXX.XX.XXX.XX:8800/FirstServlet/mygeco?mytxt=' + myDivText,'resizable=yes');
But now, I had to include a few input forms and now I am calling my servlet through a submit mechanism, so how do I pass myDivText to servlet.java without using the above method?
但是现在，我必须包含一些输入表单，现在我通过提交机制调用我的 servlet，那么如何在不使用上述方法的情况下将 myDivText 传递给 servlet.java？
==============================EDIT==========================
==============================编辑================== ========
My form looks as follows:
我的表格如下所示：
<form method="post" name="myform" action="upload" target="_top" enctype="multipart/form-data">
<li>Left File : <input type="file" name="dataFile1" id="fileChooser1" /></li>
<li>Right File : <input type="file" name="dataFile2" id="fileChooser2" /></li>
<li>Config File :<input type="file" name="dataFile3" id="fileChooser3" /></li>
<li><input type="hidden" name="myField" id="myfield" value="" /></li>
</form>
Submitting form through JavaScript:
通过 JavaScript 提交表单：
var scc1 = document.getElementById("box");
scc1.innerHTML = scc1.innerHTML + "<br>" + "<span class='blue'>Uploading files, the page might refresh</span>";
var thetxt = scc1.innerHTML;
document.getElementById('myField').value = thetxt;
document.myform.submit();
Getting data in Servlet.java
在 Servlet.java 中获取数据
String mydiv = request.getParameter("myField");
request.setAttribute("mydiv", mydiv);
采纳答案by Santino 'Sonny' Corleone
You could give your hidden field an id:
你可以给你的隐藏字段一个 id：
.html file
.html 文件
Your form
你的表格
<form action="">
<input type="hidden" name="myField" id="myField" value="" />
</form>
and then when you want to assign its value:
然后当你想分配它的值时：
Your Javascipt
你的Javascipt
document.getElementById('myField').value = myDivText;
send the form with an action..
发送带有操作的表单..
And at the action page your retrieve it using request.getParameter("myField")
并在操作页面上使用检索它 request.getParameter("myField")
Hope it helps
希望能帮助到你
UPDATE
更新
Hope this links help Multipart/form-data how to get parameter hidden
希望此链接有助于 Multipart/form-data 如何隐藏参数
回答by Subir Kumar Sao
Create a form and set the values through javascript and submit the form.
创建一个表单并通过javascript设置值并提交表单。
<form action='<url>' method="POST">
<input type="hidden" name="divtext"/>
</form>
And in JS
在 JS 中
form = document.getElementById("formId"); // or directly through dom
// set the values.
form.submit();
