org.springframework.core.io

接口 WritableResource

所有超级接口:

InputStreamSource, Resource

所有已知实现类:

FileSystemResource, FileUrlResource, PathResource

public interface WritableResource
extends Resource

Extended interface for a resource that supports writing to it. Provides an OutputStream accessor.

从以下版本开始:

3.1

作者:

Juergen Hoeller

另请参阅:

OutputStream

方法概要

限定符和类型	方法和说明
OutputStream	getOutputStream() Return an OutputStream for the underlying resource, allowing to (over-)write its content.
default boolean	isWritable() Indicate whether the contents of this resource can be written via getOutputStream().
default WritableByteChannel	writableChannel() Return a WritableByteChannel.

从接口继承的方法 org.springframework.core.io.Resource

contentLength, createRelative, exists, getDescription, getFile, getFilename, getURI, getURL, isFile, isOpen, isReadable, lastModified, readableChannel

从接口继承的方法 org.springframework.core.io.InputStreamSource

getInputStream

方法详细资料

isWritable

default boolean isWritable()

Indicate whether the contents of this resource can be written via getOutputStream().

Will be true for typical resource descriptors; note that actual content writing may still fail when attempted. However, a value of false is a definitive indication that the resource content cannot be modified.

另请参阅:

getOutputStream(), Resource.isReadable()

getOutputStream

OutputStream getOutputStream()
                      throws IOException

Return an OutputStream for the underlying resource, allowing to (over-)write its content.

抛出:

IOException - if the stream could not be opened

另请参阅:

InputStreamSource.getInputStream()

writableChannel

default WritableByteChannel writableChannel()
                                     throws IOException

Return a WritableByteChannel.

It is expected that each call creates a fresh channel.

The default implementation returns Channels.newChannel(OutputStream) with the result of getOutputStream().

返回:

the byte channel for the underlying resource (must not be null)

抛出:

FileNotFoundException - if the underlying resource doesn't exist

IOException - if the content channel could not be opened

从以下版本开始:

5.0

另请参阅:

getOutputStream()