org.springframework.core.io

类 InputStreamResource

java.lang.Object

org.springframework.core.io.AbstractResource

org.springframework.core.io.InputStreamResource

所有已实现的接口:

InputStreamSource, Resource

public class InputStreamResource
extends AbstractResource

Resource implementation for a given InputStream.

Should only be used if no other specific Resource implementation is applicable. In particular, prefer ByteArrayResource or any of the file-based Resource implementations where possible.

In contrast to other Resource implementations, this is a descriptor for an already opened resource - therefore returning true from isOpen(). Do not use an InputStreamResource if you need to keep the resource descriptor somewhere, or if you need to read from a stream multiple times.

从以下版本开始:

28.12.2003

作者:

Juergen Hoeller, Sam Brannen

另请参阅:

ByteArrayResource, ClassPathResource, FileSystemResource, UrlResource

构造器概要

构造器

构造器和说明
InputStreamResource(InputStream inputStream) Create a new InputStreamResource.
InputStreamResource(InputStream inputStream, String description) Create a new InputStreamResource.

方法概要

限定符和类型	方法和说明
boolean	equals(Object other) This implementation compares the underlying InputStream.
boolean	exists() This implementation always returns true.
String	getDescription() This implementation returns a description that includes the passed-in description, if any.
InputStream	getInputStream() This implementation throws IllegalStateException if attempting to read the underlying stream multiple times.
int	hashCode() This implementation returns the hash code of the underlying InputStream.
boolean	isOpen() This implementation always returns true.

从类继承的方法 org.springframework.core.io.AbstractResource

contentLength, createRelative, getFile, getFileForLastModifiedCheck, getFilename, getURI, getURL, isFile, isReadable, lastModified, readableChannel, toString

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

构造器详细资料

InputStreamResource

public InputStreamResource(InputStream inputStream)

Create a new InputStreamResource.

参数:

inputStream - the InputStream to use

InputStreamResource

public InputStreamResource(InputStream inputStream,
                           @Nullable
                           String description)

Create a new InputStreamResource.

参数:

inputStream - the InputStream to use

description - where the InputStream comes from

方法详细资料

exists

public boolean exists()

This implementation always returns true.

指定者:

exists 在接口中 Resource

覆盖:

exists 在类中 AbstractResource

isOpen

public boolean isOpen()

This implementation always returns true.

指定者:

isOpen 在接口中 Resource

覆盖:

isOpen 在类中 AbstractResource

getInputStream

public InputStream getInputStream()
                           throws IOException,
                                  IllegalStateException

This implementation throws IllegalStateException if attempting to read the underlying stream multiple times.

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

IllegalStateException

getDescription

public String getDescription()

This implementation returns a description that includes the passed-in description, if any.

另请参阅:

Object.toString()

equals

public boolean equals(Object other)

This implementation compares the underlying InputStream.

覆盖:

equals 在类中 AbstractResource

另请参阅:

Resource.getDescription()

hashCode

public int hashCode()

This implementation returns the hash code of the underlying InputStream.

覆盖:

hashCode 在类中 AbstractResource

另请参阅:

Resource.getDescription()