[英]how to retrieve value from dynamic html form elements in servlet
How can I retrieve value from input elements that are generated dynamically using servlet? 如何从使用servlet动态生成的输入元素中检索值?
Here's an example: 这是一个例子:
<label>Name your </label><input type="text" name="values[]">
<input type="button" value="Add More" onClick="addXYZ();">
it can be retrieved using : 可以使用:
String val[]=request.getParameterValues("values[]");
now having problem in 现在有问题了
<form enctype="multipart/form-data" method="POST" action="uploadfr">
<input type="file" name="filed[]" accept="image/*" required>
<input type="submit" value="upload">
</form>
how can i retrieve images in servlet? 我怎样才能在servlet中检索图像?
I am assuming you are looking for something similar to: 我假设你正在寻找类似的东西:
<html>
<head>
<script type="text/javascript">
var addXYZ = function() {
var retrievedValue = document.getElementsByName("values[]")[0].value;
alert(retrievedValue);
}
</script>
</head>
<body>
<label>Name your </label><input type="text" name="values[]">
<input type="button" value="Add More" onClick="javascript:addXYZ()">
</body>
<html>
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