在Spring MVC应用程序中使用jclouds创建BlobContext时出错

Question

我有一个Spring MVC 4.0.1 Web应用程序，需要将文件上传到Rackspace Cloud Files。 我正在使用Apache jClouds来执行此操作。 尝试使用以下代码创建BlobStore时：

BlobStoreContext context = ContextBuilder.newBuilder("cloudfiles-us").credentials("username","password").buildView(BlobStoreContext.class);

我得到以下异常：

com.google.inject.CreationException: Guice creation errors:

1) No implementation for com.google.common.base.Supplier<java.lang.String> annotated with @org.jclouds.openstack.swift.TemporaryUrlKey() was bound.
  while locating com.google.common.base.Supplier<java.lang.String> annotated with @org.jclouds.openstack.swift.TemporaryUrlKey()
    for parameter 4 at org.jclouds.openstack.swift.blobstore.SwiftBlobSigner.<init>(SwiftBlobSigner.java:88)
  at org.jclouds.cloudfiles.CloudFilesApiMetadata$CloudFilesTemporaryUrlExtensionModule.bindRequestSigner(CloudFilesApiMetadata.java:101)

2) No implementation for org.jclouds.openstack.swift.CommonSwiftClient was bound.
  while locating org.jclouds.openstack.swift.CommonSwiftClient
    for parameter 4 at org.jclouds.cloudfiles.blobstore.CloudFilesBlobStore.<init>(CloudFilesBlobStore.java:63)
  at org.jclouds.cloudfiles.blobstore.config.CloudFilesBlobStoreContextModule.configure(CloudFilesBlobStoreContextModule.java:64)

3) No implementation for org.jclouds.openstack.swift.CommonSwiftClient was bound.
  while locating org.jclouds.openstack.swift.CommonSwiftClient
    for parameter 0 at org.jclouds.openstack.swift.blobstore.strategy.internal.SequentialMultipartUploadStrategy.<init>(SequentialMultipartUploadStrategy.java:51)
  while locating com.google.inject.Provider<org.jclouds.openstack.swift.blobstore.strategy.internal.MultipartUploadStrategy>
    for parameter 14 at org.jclouds.cloudfiles.blobstore.CloudFilesBlobStore.<init>(CloudFilesBlobStore.java:63)
  at org.jclouds.cloudfiles.blobstore.config.CloudFilesBlobStoreContextModule.configure(CloudFilesBlobStoreContextModule.java:64)

4) org.jclouds.rest.config.SyncToAsyncHttpApiProvider<org.jclouds.openstack.keystone.v1_1.AuthenticationClient, A> cannot be used as a key; It is not fully specified.

5) org.jclouds.rest.config.SyncToAsyncHttpApiProvider<org.jclouds.rest.HttpClient, A> cannot be used as a key; It is not fully specified.

6) org.jclouds.rest.config.SyncToAsyncHttpApiProvider<org.jclouds.cloudfiles.CloudFilesClient, A> cannot be used as a key; It is not fully specified.

7) org.jclouds.rest.config.SyncToAsyncHttpApiProvider<org.jclouds.openstack.swift.extensions.TemporaryUrlKeyApi, A> cannot be used as a key; It is not fully specified.

8) org.jclouds.rest.RestContext<org.jclouds.cloudfiles.CloudFilesClient, A> cannot be used as a key; It is not fully specified.

9) No implementation for org.jclouds.location.suppliers.RegionIdToURISupplier$Factory was bound.
  at org.jclouds.cloudfiles.config.CloudFilesRestClientModule$StorageAndCDNManagementEndpointModule.provideCDNUrl(CloudFilesRestClientModule.java:67)

10) No implementation for org.jclouds.openstack.keystone.v1_1.suppliers.V1DefaultRegionIdSupplier$Factory was bound.
  at org.jclouds.cloudfiles.config.CloudFilesRestClientModule$StorageAndCDNManagementEndpointModule.provideCDNUrl(CloudFilesRestClientModule.java:67)

11) No implementation for org.jclouds.location.suppliers.RegionIdToURISupplier$Factory was bound.
  at org.jclouds.cloudfiles.config.CloudFilesRestClientModule$StorageAndCDNManagementEndpointModule.provideStorageUrl(CloudFilesRestClientModule.java:76)

12) No implementation for org.jclouds.openstack.keystone.v1_1.suppliers.V1DefaultRegionIdSupplier$Factory was bound.
  at org.jclouds.cloudfiles.config.CloudFilesRestClientModule$StorageAndCDNManagementEndpointModule.provideStorageUrl(CloudFilesRestClientModule.java:76)

13) No implementation for org.jclouds.openstack.keystone.v1_1.AuthenticationClient was bound.
  at org.jclouds.rest.config.BinderUtils.bindHttpApiProvider(BinderUtils.java:106)

14) No implementation for org.jclouds.rest.HttpClient was bound.
  at org.jclouds.rest.config.BinderUtils.bindHttpApiProvider(BinderUtils.java:106)

15) No implementation for org.jclouds.cloudfiles.CloudFilesClient was bound.
  at org.jclouds.rest.config.BinderUtils.bindHttpApiProvider(BinderUtils.java:106)

16) No implementation for org.jclouds.openstack.swift.extensions.TemporaryUrlKeyApi was bound.
  at org.jclouds.rest.config.BinderUtils.bindHttpApiProvider(BinderUtils.java:106)

16 errors

我无法弄清楚这一点，因为它几乎就是示例代码的第一行......

Answer 1

您使用Java 7u51运行jclouds 1.6.x或1.7.0吗？ 如果是这样，您可能遇到过https://issues.apache.org/jira/browse/JCLOUDS-427 。 您可以通过降级到Java 7u45或升级到jclouds 1.7.1来解决这个问题。