com.firefly.utils.io

接口 InputStreamSource

所有已知子接口:

ContextResource, Resource, WritableResource

所有已知实现类:

AbstractFileResolvingResource, AbstractResource, ByteArrayResource, ClassPathResource, DefaultResourceLoader.ClassPathContextResource, EncodedResource, FileSystemResource, InputStreamResource, PathResource, UrlResource

public interface InputStreamSource

Simple interface for objects that are sources for an InputStream.

This is the base interface for Firefly's more extensive Resource interface.

For single-use streams, InputStreamResource can be used for any given InputStream. Firefly's ByteArrayResource or any file-based Resource implementation can be used as a concrete instance, allowing one to read the underlying content stream multiple times. This makes this interface useful as an abstract content source for mail attachments, for example.

另请参阅:

InputStream, Resource, InputStreamResource, ByteArrayResource

方法概要

限定符和类型	方法和说明
InputStream	getInputStream() Return an InputStream.

方法详细资料

getInputStream

InputStream getInputStream()
                    throws IOException

Return an InputStream.

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:

IOException - if the stream could not be opened