类 VfsResource

构造器详细资料

• VfsResource

  public VfsResource​(Object resource)

  Create a new VfsResource wrapping the given resource handle.

  参数:

  resource - a org.jboss.vfs.VirtualFile instance (untyped in order to avoid a static dependency on the VFS API)

方法详细资料

• getInputStream

  public InputStream getInputStream()
                             throws IOException

  从接口复制的说明: InputStreamSource
  Return an InputStream for the content of an underlying resource.

  It is expected that each call creates a fresh stream.

  This requirement is particularly important when you consider an API such as JavaMail, which needs to be able to read the stream multiple times when creating mail attachments. For such a use case, it is required that each getInputStream() call returns a fresh stream.

  返回:

  the input stream for the underlying resource (must not be null)

  抛出:

  FileNotFoundException - if the underlying resource doesn't exist

  IOException - if the content stream could not be opened

• exists

  public boolean exists()

  从类复制的说明: AbstractResource
  This implementation checks whether a File can be opened, falling back to whether an InputStream can be opened. This will cover both directories and content resources.

  指定者:

  exists 在接口中 Resource

  覆盖:

  exists 在类中 AbstractResource

• isReadable

  public boolean isReadable()

  从类复制的说明: AbstractResource
  This implementation always returns true.

  指定者:

  isReadable 在接口中 Resource

  覆盖:

  isReadable 在类中 AbstractResource

  另请参阅:

  InputStreamSource.getInputStream()

• getURL

  public URL getURL()
             throws IOException

  从类复制的说明: AbstractResource
  This implementation throws a FileNotFoundException, assuming that the resource cannot be resolved to a URL.

  指定者:

  getURL 在接口中 Resource

  覆盖:

  getURL 在类中 AbstractResource

  抛出:

  IOException - if the resource cannot be resolved as URL, i.e. if the resource is not available as descriptor

• getURI

  public URI getURI()
             throws IOException

  从类复制的说明: AbstractResource
  This implementation builds a URI based on the URL returned by AbstractResource.getURL().

  指定者:

  getURI 在接口中 Resource

  覆盖:

  getURI 在类中 AbstractResource

  抛出:

  IOException - if the resource cannot be resolved as URI, i.e. if the resource is not available as descriptor

• getFile

  public File getFile()
               throws IOException

  从类复制的说明: AbstractResource
  This implementation throws a FileNotFoundException, assuming that the resource cannot be resolved to an absolute file path.

  指定者:

  getFile 在接口中 Resource

  覆盖:

  getFile 在类中 AbstractResource

  抛出:

  FileNotFoundException - if the resource cannot be resolved as absolute file path, i.e. if the resource is not available in a file system

  IOException - in case of general resolution/reading failures

  另请参阅:

  InputStreamSource.getInputStream()

• contentLength

  public long contentLength()
                     throws IOException

  从类复制的说明: AbstractResource
  This implementation reads the entire InputStream to calculate the content length. Subclasses will almost always be able to provide a more optimal version of this, e.g. checking a File length.

  指定者:

  contentLength 在接口中 Resource

  覆盖:

  contentLength 在类中 AbstractResource

  抛出:

  IOException - if the resource cannot be resolved (in the file system or as some other known physical resource type)

  另请参阅:

  InputStreamSource.getInputStream()

• lastModified

  public long lastModified()
                    throws IOException

  从类复制的说明: AbstractResource
  This implementation checks the timestamp of the underlying File, if available.

  指定者:

  lastModified 在接口中 Resource

  覆盖:

  lastModified 在类中 AbstractResource

  抛出:

  IOException - if the resource cannot be resolved (in the file system or as some other known physical resource type)

  另请参阅:

  AbstractResource.getFileForLastModifiedCheck()

• createRelative

  public Resource createRelative​(String relativePath)
                          throws IOException

  从类复制的说明: AbstractResource
  This implementation throws a FileNotFoundException, assuming that relative resources cannot be created for this resource.

  指定者:

  createRelative 在接口中 Resource

  覆盖:

  createRelative 在类中 AbstractResource

  参数:

  relativePath - the relative path (relative to this resource)

  返回:

  the resource handle for the relative resource

  抛出:

  IOException - if the relative resource cannot be determined

• getFilename

  public String getFilename()

  从类复制的说明: AbstractResource
  This implementation always returns null, assuming that this resource type does not have a filename.

  指定者:

  getFilename 在接口中 Resource

  覆盖:

  getFilename 在类中 AbstractResource

• getDescription

  public String getDescription()

  从接口复制的说明: Resource
  Return a description for this resource, to be used for error output when working with the resource.

  Implementations are also encouraged to return this value from their toString method.

  另请参阅:

  Object.toString()

• equals

  public boolean equals​(Object obj)

  从类复制的说明: AbstractResource
  This implementation compares description strings.

  覆盖:

  equals 在类中 AbstractResource

  另请参阅:

  Resource.getDescription()

• hashCode

  public int hashCode()

  从类复制的说明: AbstractResource
  This implementation returns the description's hash code.

  覆盖:

  hashCode 在类中 AbstractResource

  另请参阅:

  Resource.getDescription()