我想將圖像上傳到谷歌云存儲，這是我的 Spring Boot 代碼。但問題是這根本不起作用，給我這樣的錯誤：2018-10-22 15:22:55.628 錯誤 6172 --- [nio-8080-exec-6] oaccC[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] 在上下文中路徑[]拋出異常[請求處理失?。磺短桩惓Ｊ?java.lang.IllegalArgumentException: Invoked method public abstract java.io.InputStream org.apache.commons.fileupload.FileItemStream.openStream() throws java.io.IOException is no accessor method!] 具有根本原因請幫我。以下是我寫的代碼 private static Storage storage = null; // [START init] static { storage = StorageOptions.getDefaultInstance().getService(); } @SuppressWarnings("deprecation") @RequestMapping(method = RequestMethod.POST, value = "/imageUpload") public String uploadFile(FileItemStream fileStream) throws IOException, ServletException { String bucketName = "mcqimages"; checkFileExtension(fileStream.getName()); DateTimeFormatter dtf = DateTimeFormat.forPattern("-YYYY-MM-dd-HHmmssSSS"); DateTime dt = DateTime.now(DateTimeZone.UTC); String dtString = dt.toString(dtf); final String fileName = fileStream.getName() + dtString; BlobInfo blobInfo = storage.create( BlobInfo .newBuilder(bucketName, fileName) .setAcl(new ArrayList<>(Arrays.asList(Acl.of(User.ofAllUsers(), Role.READER)))) .build(), fileStream.openStream()); return blobInfo.getMediaLink(); } private void checkFileExtension(String fileName) throws ServletException { if (fileName != null && !fileName.isEmpty() && fileName.contains(".")) { String[] allowedExt = {".jpg", ".jpeg", ".png", ".gif"}; for (String ext : allowedExt) { if (fileName.endsWith(ext)) { return; } } throw new ServletException("file must be an image"); } }
2 回答
大話西游666
TA貢獻1817條經驗 獲得超14個贊
最后我想出了這個代碼:)。工作得很好。需要憑據才能將文件上傳到 GCP 存儲。您也可以從 JSON 格式生成憑據。
https://cloud.google.com/docs/authentication/production
Credentials credentials = GoogleCredentials.fromStream(new FileInputStream("C:\\Users\\sachinthah\\Downloads\\MCQ project -1f959c1fc3a4.json"));
Storage storage = StorageOptions.newBuilder().setCredentials(credentials).build().getService();
public CloudStorageHelper() throws IOException {
}
@SuppressWarnings("deprecation")
@RequestMapping(method = RequestMethod.POST, value = "/imageUpload112")
public String uploadFile(@RequestParam("fileseee")MultipartFile fileStream)
throws IOException, ServletException {
String bucketName = "mcqimages";
checkFileExtension(fileStream.getName());
DateTimeFormatter dtf = DateTimeFormat.forPattern("-YYYY-MM-dd-HHmmssSSS");
DateTime dt = DateTime.now(DateTimeZone.UTC);
String dtString = dt.toString(dtf);
final String fileName = fileStream.getName() + dtString;
File file = convertMultiPartToFile( fileStream );
BlobInfo blobInfo =
storage.create(
BlobInfo
.newBuilder(bucketName, fileName)
.setAcl(new ArrayList<>(Arrays.asList(Acl.of(User.ofAllUsers(), Role.READER))))
.build()
// file.openStream()
);
System.out.println(blobInfo.getMediaLink());
return blobInfo.getMediaLink();
}
private File convertMultiPartToFile(MultipartFile file ) throws IOException
{
File convFile = new File( file.getOriginalFilename() );
FileOutputStream fos = new FileOutputStream( convFile );
fos.write( file.getBytes() );
fos.close();
return convFile;
}
private void checkFileExtension(String fileName) throws ServletException {
if (fileName != null && !fileName.isEmpty() && fileName.contains(".")) {
String[] allowedExt = {".jpg", ".jpeg", ".png", ".gif"};
for (String ext : allowedExt) {
if (fileName.endsWith(ext)) {
return;
}
}
throw new ServletException("file must be an image");
}
}
德瑪西亞99
TA貢獻1770條經驗 獲得超3個贊
我會嘗試上傳文件：
public String uploadFile(@RequestParam("file") MultipartFile file) {
if (file.isEmpty()) {
//Set error message
}
else {
try {
String extension = FilenameUtils.getExtension(file.getOriginalFilename()); //Commons IO
// Get the file
byte[] bytes = file.getBytes();
....
}
上傳文件的一個很好的例子在這里：https : //www.baeldung.com/spring-file-upload
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