程序包 cn.taketoday.core.codec

类 ResourceRegionEncoder

java.lang.Object

cn.taketoday.core.codec.AbstractEncoder<ResourceRegion>

cn.taketoday.core.codec.ResourceRegionEncoder

所有已实现的接口:

Encoder<ResourceRegion>

public class ResourceRegionEncoder
extends AbstractEncoder<ResourceRegion>

Encoder for ResourceRegions.

从以下版本开始:

4.0

作者:

Brian Clozel, Harry Yang

字段概要

字段

修饰符和类型	字段	说明
static final String	BOUNDARY_STRING_HINT	The hint key that contains the boundary string.
private final int	bufferSize
static final int	DEFAULT_BUFFER_SIZE	The default buffer size used by the encoder.

从类继承的字段 cn.taketoday.core.codec.AbstractEncoder

logger

构造器概要

构造器

构造器	说明
ResourceRegionEncoder()
ResourceRegionEncoder(int bufferSize)

方法概要

修饰符和类型	方法	说明
boolean	canEncode(ResolvableType elementType, MimeType mimeType)	Whether the encoder supports the given source element type and the MIME type for the output stream.
private OptionalLong	contentLength(Resource resource)	Determine, if possible, the contentLength of the given resource without reading it.
reactor.core.publisher.Flux<DataBuffer>	encode(org.reactivestreams.Publisher<? extends ResourceRegion> input, DataBufferFactory bufferFactory, ResolvableType elementType, MimeType mimeType, Map<String,Object> hints)	Encode a stream of Objects of type T into a DataBuffer output stream.
private byte[]	getContentRangeHeader(ResourceRegion region)
private DataBuffer	getRegionSuffix(DataBufferFactory bufferFactory, String boundaryString)
private byte[]	toAsciiBytes(String in)
private reactor.core.publisher.Flux<DataBuffer>	writeResourceRegion(ResourceRegion region, DataBufferFactory bufferFactory, Map<String,Object> hints)

从类继承的方法 cn.taketoday.core.codec.AbstractEncoder

getEncodableMimeTypes, getLogger, setLogger

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 cn.taketoday.core.codec.Encoder

encodeValue, getEncodableMimeTypes

字段详细资料

DEFAULT_BUFFER_SIZE

public static final int DEFAULT_BUFFER_SIZE

The default buffer size used by the encoder.

另请参阅:

• 常量字段值

BOUNDARY_STRING_HINT

public static final String BOUNDARY_STRING_HINT

The hint key that contains the boundary string.

bufferSize

private final int bufferSize

构造器详细资料

ResourceRegionEncoder

public ResourceRegionEncoder()

ResourceRegionEncoder

public ResourceRegionEncoder(int bufferSize)

方法详细资料

canEncode

public boolean canEncode(ResolvableType elementType,
 @Nullable
 MimeType mimeType)

从接口复制的说明: Encoder

Whether the encoder supports the given source element type and the MIME type for the output stream.

指定者:

canEncode 在接口中 Encoder<ResourceRegion>

覆盖:

canEncode 在类中 AbstractEncoder<ResourceRegion>

参数:

elementType - the type of elements in the source stream

mimeType - the MIME type for the output stream (can be null if not specified)

返回:

true if supported, false otherwise

encode

public reactor.core.publisher.Flux<DataBuffer> encode(org.reactivestreams.Publisher<? extends ResourceRegion> input,
 DataBufferFactory bufferFactory,
 ResolvableType elementType,
 @Nullable
 MimeType mimeType,
 @Nullable
 Map<String,Object> hints)

从接口复制的说明: Encoder

Encode a stream of Objects of type T into a DataBuffer output stream.

参数:

input - the input stream of Objects to encode. If the input should be encoded as a single value rather than as a stream of elements, an instance of Mono should be used.

bufferFactory - for creating output stream DataBuffer's

elementType - the expected type of elements in the input stream; this type must have been previously passed to the Encoder.canEncode(cn.taketoday.core.ResolvableType, cn.taketoday.util.MimeType) method and it must have returned true.

mimeType - the MIME type for the output content (optional)

hints - additional information about how to encode

返回:

the output stream

writeResourceRegion

private reactor.core.publisher.Flux<DataBuffer> writeResourceRegion(ResourceRegion region,
 DataBufferFactory bufferFactory,
 @Nullable
 Map<String,Object> hints)

getRegionSuffix

private DataBuffer getRegionSuffix(DataBufferFactory bufferFactory,
 String boundaryString)

toAsciiBytes

private byte[] toAsciiBytes(String in)

getContentRangeHeader

private byte[] getContentRangeHeader(ResourceRegion region)

contentLength

private OptionalLong contentLength(Resource resource)

Determine, if possible, the contentLength of the given resource without reading it.

参数:

resource - the resource instance

返回:

the contentLength of the resource