playframework中的多个文件上传 [英] Multiple file upload in playframework
本文介绍了playframework中的多个文件上传的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我在上传多个文件时遇到了一些问题.当我选择x个文件时,它成功通过,但第一个文件正在上传x次,其他文件根本没有上传.任何人都能够指出我做错了什么?
I'm having some problems with getting multiple file upload to work. When I select x files, it goes through successfully, but the first file is being uploaded x times, and the others are not being uploaded at all. Anyone able to point out what I am doing wrong?
表格:
#{form @Projects.uploadPictures(project.id), enctype:'multipart/form-data'}
<p>
<label>&{'title'}</label>
<input type="text" name="title"/>
<strong>(&{'addPicture.chooseTitle'})</strong>
</p>
<p>
<label>&{'Pictures'}</label>
<input type="file" multiple name="files" id="files"/>
</p>
<p>
<input type="submit" value="&{'publish'}" />
</p>
#{/form}
处理文件:
public static void uploadPictures(long id, String title, List<Blob> files) {
String error = "";
if(files != null && !title.trim().equals("")) {
Project project = Project.findById(id);
// Save uploaded files
Picture picture;
for(int i = 0; i<files.size(); i++) {
if(files.get(i) != null) {
System.out.println("i: "+i+"
Filtype: "+files.get(i).type());
if(files.get(i).type().equals("image/jpeg") || files.get(i).type().equals("image/png")) {
picture = new Picture(project, title+"_bilde_"+(i+1), files.get(i));
project.addPicture(picture);
} else {
error += "Fil nummer "+(i+1)+" er av typen "+files.get(i).type()+" og ikke av typen .JPG eller .PNG og ble dermed ikke lagt til.
";
}
} else {
error = "Ingen filer funnet";
}
}
} else {
error = "Velg en tittel for bildene";
}
if(error.equals("")) {
flash.success("Picture(s) added");
} else {
flash.error(error);
}
addPicture(id);
}
推荐答案
如果有人感兴趣,就让它这样工作:
Got it to work like this if anyone is ever interested:
public static void uploadPictures(long id, String title, File fake) {
List<Upload> files = (List<Upload>) request.args.get("__UPLOADS");
if(files != null) {
Project project = Project.findById(id);
Picture picture;
Blob image;
InputStream inStream;
for(Upload file: files) {
if(file != null) {
try {
inStream = new java.io.FileInputStream(file.asFile());
image = new Blob();
image.set(inStream, new MimetypesFileTypeMap().getContentType(file.asFile()));
picture = new Picture(project, file.getFileName(), image);
project.addPicture(picture); // stores the picture
} catch (FileNotFoundException e) {
System.out.println(e.toString());
}
}
}
}
addPicture(id); //renders the image upload view
}
如果可能的话,很高兴得到一个带有 Blob 对象数组的工作解决方案,而不必请求 request.args.get("__UPLOADS").
Would be happy to get a working solution with an array of Blob objects instead of having to request.args.get("__UPLOADS") if possible.
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