Required CommonMultipartFile parameter 'testFile' is not present in spring mvc - spring-mvc

Question

when I upload a file to springmvc, getting a error message "Required CommonsMultipartFile parameter 'textFile' is not present", I don't know why I can meet it, that's my code.
<form id="form" enctype="multipart/form-data">
<input type="text" id="username" name="username" />
<input type="file" id="file" name="textFile" />
<input type="button" onclick="test()" value="上传" />
</form>
<script type="text/javascript">
function test(){
var form = new FormData(document.getElementById("form"));
$.ajax({
url:"http://localhost:8080/giraffe/upload1",
type:"post",
data:form,
cache: false,
processData: false,
contentType: false,
success:function(data){
alert("success！");
}
});
}
That's my controller and configuration.
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding" value="UTF-8"/>
<property name="maxUploadSize" value="10240000"/>
</bean>
#RequestMapping(path = "/upload1", method = RequestMethod.POST)
public Object updloadImage(#RequestParam("textFile") CommonsMultipartFile file){
String fileName = file.getOriginalFilename();
return null;
}

Answer 1

Maybe you should change your RequestParam to
#RequestParam MultipartFile textFile
This is of type "org.springframework.web.multipart.MultipartFile"
Also important is that you expose the commons library to your server. So you must add your commons-fileupload-x.x.x.jar to the WEB-INF/lib folder.
And your controller must add the path
#RequestMapping(value="/giraffe")
because your AJAX-Request points to /giraffe/upload1
To check what and if anything is presented to the controller you can add
#RequestParam (required=false) ...
If you have an jsp-File for the page and no plain html then you can use the jstl. This can help you avoid problems with the correct url in your AJAX-request. Like this
url: "<c:url value='/giraffe/upload1' />",