我正在创建将文件从一个目录复制到另一个目录的应用程序。
jSON输入是:
{ "accountName" : "name",
"accountKey" : "key",
"source" : "directory1/directory2/directory3/directory4",
"destination" : "directory1/directory2",
"fileToCopy" : "1"
}
目录4在目录3下,3表示在2下,2表示在1下。
想要复制名为" 1"的文件从目录4到目录2。
我的java代码是:
@Override
public JSONObject copyFile(JSONObject jsonInput) throws IOException, InvalidKeyException, URISyntaxException {
CloudFileClient fileClient = null;
String storageConnectionString = "DefaultEndpointsProtocol=https;AccountName="+jsonInput.get("accountName")+";"+"AccountKey="+jsonInput.get("accountKey");
System.out.println(storageConnectionString);
CloudStorageAccount storageAccount = CloudStorageAccount.parse(storageConnectionString);
JSONObject jsonOutput = new JSONObject();
try {
fileClient = storageAccount.createCloudFileClient();
String source = jsonInput.get("source").toString();
String destination = jsonInput.get("destination").toString();
String fileToCopy = jsonInput.get("fileToCopy").toString();
String[] sourceNameArray = source.split("\\s*/\\s*");
System.out.println(sourceNameArray.length);
String[] destinationNameArray = destination.split("\\s*/\\s*");
System.out.println(destinationNameArray.length);
CloudFileShare share = fileClient
.getShareReference(sourceNameArray[0].toLowerCase().replaceAll("[-+.^:,!@#$%&*()_~`]", ""));
CloudFileDirectory rootDir = share.getRootDirectoryReference();
for (int i=0; i< sourceNameArray.length; i++)
{
String directoryToCreate = sourceNameArray[i];
CloudFileDirectory directory = rootDir.getDirectoryReference(directoryToCreate);
if(i==sourceNameArray.length-1)
{
CloudFile fileToCopyFromSorce = directory.getFileReference(fileToCopy);
for (int j=0; j< destinationNameArray.length; j++)
{
String directoryToCreateForDestination = destinationNameArray[j];
CloudFileDirectory directoryForDestination = rootDir.getDirectoryReference(directoryToCreateForDestination);
if(j==destinationNameArray.length-1){
CloudFile fileDestination = directoryForDestination.getFileReference(fileToCopy);
// is next line required?
//fileToCopyFromSorce.create(1);
fileDestination.startCopy(fileToCopyFromSorce);
System.out.println("copied to destination");
jsonOutput.put("status", "successful");
}
rootDir = directoryForDestination;
}
}
rootDir = directory;
}
} catch (Exception e) {
System.out.println("Exception is " + e);
jsonOutput.put("status", "unsuccessful");
jsonOutput.put("exception", e.toString());
}
return jsonOutput;
}
我收到错误,
Exception is com.microsoft.azure.storage.StorageException: The specified parent path does not exist.
但是我在我的azure存储帐户中指定了父路径。
如果可能,需要建议代码和任何参考代码。
答案 0 :(得分:4)
根据例外情况,该问题是由Azure文件存储上不存在的文件的父目录引起的,如下图here所示。
因此,您需要首先从根目录检查并创建这些父目录,例如下面的目标路径代码,以及何时需要获取目录引用。
String destination = "directory1/directory2";
CloudFileDirectory rootDir = share.getRootDirectoryReference();
String[] destinationNameArray = destination.split("/");
CloudFileDirectory kidDir = rootDir;
for(String name: destinationNameArray) {
kidDir = kidDir.getDirectoryReference(name);
kidDir.createIfNotExists();
}
然后您可以直接将文件从源文件复制到目标文件,如下所示。
String source = "directory1/directory2/directory3/directory4";
String destination = "directory1/directory2";
String fileName = "1";
CloudFileDirectory sourceDir = rootDir.getDirectoryReference(source);
CloudFileDirectory destinationDir = rootDir.getDirectoryReference(destination);
CloudFile sourceFile = sourceDir.getFileReference(fileName);
CloudFile destinationFile = destinationDir.getFileReference(fileName);
destinationFile.startCopy(sourceFile);