[英]Why am I getting Bad Request kind error when uploading file using jquery with spring mvc?
當我在Spring MVC中使用Jquery時,在瀏覽器端“ Bad Request”處出現錯誤,並且控件未傳遞給控制器。當我使用簡單形式並將請求發送到同一控制器時,它就開始了。 以下是我的代碼,請告訴我我要去哪里錯了?
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<script src="files/jquery-1.10.2.js"></script>
<script src="files/jquery-1.10.2.min.js"></script>
<script type="text/javascript">
var isJpg = function(name) {
return name.match(/jpg$/i)
};
var isPng = function(name) {
return name.match(/png$/i)
};
$(document).ready(function() {
var file = $('[name="file"]');
var imgContainer = $('#imgContainer');
$('#btnUpload').on('click', function() {
var filename = $.trim(file.val());
if (!(isJpg(filename) || isPng(filename))) {
alert('Please browse a JPG/PNG file to upload ...');
return;
}
$.ajax({
url: 'FileData.htm',
type: "POST",
data: new FormData(document.getElementById("fileForm")),
enctype: 'multipart/form-data',
processData: false,
contentType: false
}).done(function(data) {
imgContainer.html('');
var img = '<img src="data:' + data.contenttype + ';base64,'
+ data.base64 + '"/>';
imgContainer.append(img);
}).fail(function(jqXHR, textStatus) {
//alert(jqXHR.responseText);
alert('File upload failed ...');
});
});
$('#btnClear').on('click', function() {
imgContainer.html('');
file.val('');
});
});
</script>
</head>
<body>
<!-- <form name="dlgContent" action="FileData.htm" id="dlgcon" enctype="multipart/form-data" method="POST">
<input type="file" name="excelfile"/>
<input type="submit"/>
</form> -->
<div>
<form id="fileForm">
<input type="file" name="file" />
<button id="btnUpload" type="button">Upload file</button>
<button id="btnClear" type="button">Clear</button>
</form>
<div id="imgContainer"></div>
</div>
</body>
</html>
還有我在彈簧映射中的Controller類,如下所示
@RequestMapping(value="/FileData.htm", method = RequestMethod.POST)
public void FileData(Model model, @RequestParam CommonsMultipartFile[] excelfile, HttpServletRequest request, HttpServletResponse response){
System.out.println("bhjsbfjhsbfbdesfbsfb");
response.setContentType("application/json");
FileData fd = new FileData();
//Map<String, String> data = fd.submitFileData(excelfile);
Gson gson = new Gson();
// String values = gson.toJson(data);
try {
//response.getWriter().write(values);
//System.out.println(values);
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
謝謝。
實際上,您發送的是Json,而不是html,您應該使用@ResponseBody
@RequestMapping(value="/upload", method = RequestMethod.POST)
public @ResponseBody
FileData upload(MultipartHttpServletRequest request,
@RequestParam String albumName,
HttpServletResponse response) {
Iterator<String> itr = request.getFileNames();
//others code here
也別忘了! 要配置多部分數據,還要使用jackson lib將對象發送回jquery done函數才能正常工作Gson lib與@ResponseBody搭配使用不是很好,我們使用的是帶有RestTemplate的Gson。
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