blueimp jquery文件上传空文件上传结果struts2，fileitems为空 [英] blueimp jquery file upload Empty file upload result struts2, fileitems empty
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问题描述
空文件上传结果当我试图上传一个单一的文件也。 HTML部分是一样的，我不粘贴在这里，因为它可能会很长。 jQuery是：
$（document）.ready（function（）{
'use strict';
//初始化jQuery文件上传部件：
$（'＃fileupload'）。fileupload （）;
//通过重定向选项启用iframe跨域访问：
$（'＃fileupload'）。fileupload（
'option'，
'重定向'，
window.location.href.replace（
/ \ / [^ \ /] * $ /，
'/cors/result.html?%s'
if（window.location.hostname ==='blueimp.github.com'）{
//演示设置：
$ （'#fileupload'）。fileupload（'option'，{
url：'//jquery-file-upload.appspot.com/'，
maxFileSize：5000000，
acceptFileTypes：/ （\。| \ /）（gif | jpe？g | png）$ / i，
process：[
{
action：'load ，
fileTypes：/ ^ image \ /（gif | jpeg | png）$ /，
maxFileSize：20000000 // 20MB
}，
{
操作： 'resize'，
maxWidth：1440，
maxHeight：900
}，
{
action：'save'
}
]
}）;
//上传服务器状态检查支持CORS的浏览器：
if（$ .support.cors）{
$ .ajax（{
url：'// jquery-file -upload.appspot.com/'，
type：'HEAD'
}）。fail（function（）{
$（'< span class =alert alert-error/ >'）
.text（'Upload server currently unavailable - '+
new Date（））
.appendTo（'＃fileupload'）;
}）;
}
} else {
//加载现有文件：
$（'＃fileupload'）。each（function（）{
var that = this;
$ .getJSON（this.action，function（result）{
if（result&& result.length）{
$（that）.fileupload（'option'，'done' ）
.call（that，null，{result：result}）;
}
}）;
}）;
}
}）;
动作：
@Namespace（/）
@InterceptorRefs（{
@InterceptorRef（fileUpload），
@InterceptorRef（basicStack ）
}）
public class UploadAction extends ActionSupport implements ServletRequestAware，ServletResponseAware {
HttpServletRequest req;
HttpServletResponse res;
// private File fileUploadPath = new File（c：\\temp\\）;
私人列表< File> uploads = new ArrayList< File>（）;
私人清单< String> uploadFileNames = new ArrayList< String>（）;
私人清单< String> uploadContentTypes = new ArrayList< String>（）;
公共列表< File> getUploads（）{
返回上传;
$ b $ public void setUploads（List< File> uploads）{
this.uploads = uploads;
}
public List< String> getUploadFileNames（）{
return uploadFileNames;
}
public void setUploadFileNames（List< String> uploadFileNames）{
this.uploadFileNames = uploadFileNames;
}
public List< String> getUploadContentTypes（）{
return uploadContentTypes;
}
public void setUploadContentTypes（List< String> uploadContentTypes）{
this.uploadContentTypes = uploadContentTypes;
$ b $ @Action（value =upload，results = {@Result（name =success，type =json）
}）
public String uploadFiles（）throws IOException
{
System.out.println（upload1）;
System.out.println（files：）;
（File u：uploads）{
System.out.println（***+ u +\ t+ u.length（））;
}
System.out.println（filenames：）;
for（String n：uploadFileNames）{
System.out.println（***+ n）;
}
System.out.println（content types：）;
for（String c：uploadContentTypes）{
System.out.println（***+ c）;
}
System.out.println（\\\
\\\
）;
if（！ServletFileUpload.isMultipartContent（req））{
throw new IllegalArgumentException（请求不是多部分，请为您的表单请求'multipart / form-data'enctype。
}
返回SUCCESS;
}
@Override
public void setServletRequest（HttpServletRequest hsr）{
this.req = hsr;
}
@Override
public void setServletResponse（HttpServletResponse hsr）{
this.res = hsr;
$正如我所说，这个动作文件，但我仍然得到所有文件的空值，在Firebug的GET响应中，我看到请求不是多部分，请为您的表单multipart / form-data'enctype
感谢&问候。
解决方案您可以使用 fileUpload 拦截器来解析你的 multipart / form-data 请求。它使用与 commons-fileupload 实现。 apache.org/maven/struts2-core/apidocs/org/apache/struts2/dispatcher/multipart/MultiPartRequestWrapper.htmlrel =nofollow> MultipartRequestWrapper 准备Struts2调度程序的操作。更多关于如何上传的例子，你可以在这里找到 。
I am using Blueimp and server side is Java, Struts2. I couldn't find examples using Java, anyway I managed to use the sample code, but I am getting "Empty file upload result" when I am trying to upload a single file also. The HTML part is the same, I am not pasting here as it may go lengthy.
The jQuery is:
$(document).ready(function () {
'use strict';
// Initialize the jQuery File Upload widget:
$('#fileupload').fileupload();
// Enable iframe cross-domain access via redirect option:
$('#fileupload').fileupload(
'option',
'redirect',
window.location.href.replace(
/\/[^\/]*$/,
'/cors/result.html?%s'
)
);
if (window.location.hostname === 'blueimp.github.com') {
// Demo settings:
$('#fileupload').fileupload('option', {
url: '//jquery-file-upload.appspot.com/',
maxFileSize: 5000000,
acceptFileTypes: /(\.|\/)(gif|jpe?g|png)$/i,
process: [
{
action: 'load',
fileTypes: /^image\/(gif|jpeg|png)$/,
maxFileSize: 20000000 // 20MB
},
{
action: 'resize',
maxWidth: 1440,
maxHeight: 900
},
{
action: 'save'
}
]
});
// Upload server status check for browsers with CORS support:
if ($.support.cors) {
$.ajax({
url: '//jquery-file-upload.appspot.com/',
type: 'HEAD'
}).fail(function () {
$('<span class="alert alert-error"/>')
.text('Upload server currently unavailable - ' +
new Date())
.appendTo('#fileupload');
});
}
} else {
// Load existing files:
$('#fileupload').each(function () {
var that = this;
$.getJSON(this.action, function (result) {
if (result && result.length) {
$(that).fileupload('option', 'done')
.call(that, null, {result: result});
}
});
});
}
});
The action:
@Namespace("/")
@InterceptorRefs({
@InterceptorRef("fileUpload"),
@InterceptorRef("basicStack")
})
public class UploadAction extends ActionSupport implements ServletRequestAware, ServletResponseAware{
HttpServletRequest req;
HttpServletResponse res;
// private File fileUploadPath=new File("c:\\temp\\");
private List<File> uploads = new ArrayList<File>();
private List<String> uploadFileNames = new ArrayList<String>();
private List<String> uploadContentTypes = new ArrayList<String>();
public List<File> getUploads() {
return uploads;
}
public void setUploads(List<File> uploads) {
this.uploads = uploads;
}
public List<String> getUploadFileNames() {
return uploadFileNames;
}
public void setUploadFileNames(List<String> uploadFileNames) {
this.uploadFileNames = uploadFileNames;
}
public List<String> getUploadContentTypes() {
return uploadContentTypes;
}
public void setUploadContentTypes(List<String> uploadContentTypes) {
this.uploadContentTypes = uploadContentTypes;
}
@Action(value="upload", results = { @Result(name="success", type="json")
})
public String uploadFiles() throws IOException
{
System.out.println("upload1");
System.out.println("files:");
for (File u: uploads) {
System.out.println("*** "+u+"\t"+u.length());
}
System.out.println("filenames:");
for (String n: uploadFileNames) {
System.out.println("*** "+n);
}
System.out.println("content types:");
for (String c: uploadContentTypes) {
System.out.println("*** "+c);
}
System.out.println("\n\n");
if (!ServletFileUpload.isMultipartContent(req)) {
throw new IllegalArgumentException("Request is not multipart, please 'multipart/form-data' enctype for your form.");
}
return SUCCESS;
}
@Override
public void setServletRequest(HttpServletRequest hsr) {
this.req=hsr;
}
@Override
public void setServletResponse(HttpServletResponse hsr) {
this.res=hsr;
}
}
As I said, I have changed the action file, but I still get all empty values for files, and in the Firebug's GET response I see "Request is not multipart, please 'multipart/form-data' enctype for your form"
Thanks & Regards.
解决方案 You may use fileUpload interceptor to parse your "multipart/form-data" requests. It uses the same commons-fileupload implementation wrapped by the MultipartRequestWrapper in prepare operations by the Struts2 dispatcher. More about how to file upload with examples you could find here.
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