com.aliyun.oss.model

类 GetObjectRequest

java.lang.Object

com.aliyun.oss.model.WebServiceRequest

com.aliyun.oss.model.GenericRequest

com.aliyun.oss.model.GetObjectRequest

public class GetObjectRequest
extends GenericRequest

This is the request class that is used to download an object from OSS. It wraps all the information needed to download an object.

字段概要

从类继承的字段 com.aliyun.oss.model.WebServiceRequest

NOOP

构造器概要

构造器

构造器和说明
GetObjectRequest(String bucketName, String key) Constructor
GetObjectRequest(URL absoluteUrl, Map<String,String> requestHeaders) Constructor with presigned Url and user's custom headers.

方法概要

方法

限定符和类型	方法和说明
void	clearMatchingETagConstraints()
void	clearNonmatchingETagConstraints()
URL	getAbsoluteUri()
List<String>	getMatchingETagConstraints() Gets the matching Etag constraints.
Date	getModifiedSinceConstraint() Gets the modified since constraints.
List<String>	getNonmatchingETagConstraints() Gets the non-matching Etag constraints.
String	getProcess()
long[]	getRange() Gets the range of the object to download.
ResponseHeaderOverrides	getResponseHeaders() Gets the response headers to override.
Date	getUnmodifiedSinceConstraint() Gets the unmodified since constraints.
boolean	isUseUrlSignature()
void	setAbsoluteUri(URL absoluteUri)
void	setMatchingETagConstraints(List<String> eTagList) Sets the matching Etag constraints.
void	setModifiedSinceConstraint(Date date) Sets the modified since constraints.
void	setNonmatchingETagConstraints(List<String> eTagList) Sets the non-matching Etag constraints.
void	setProcess(String process)
void	setRange(long start, long end) Sets the range of the object to download (optional).
void	setResponseHeaders(ResponseHeaderOverrides responseHeaders) Sets the response headers to override (optional).
void	setUnmodifiedSinceConstraint(Date date) Sets the unmodified since constraints.
void	setUseUrlSignature(boolean useUrlSignature)
GetObjectRequest	withRange(long start, long end) Sets the range of the object to download and return current GetObjectRequest instance (this).

从类继承的方法 com.aliyun.oss.model.GenericRequest

getBucketName, getKey, setBucketName, setKey, withBucketName, withKey

从类继承的方法 com.aliyun.oss.model.WebServiceRequest

addHeader, addParameter, getHeaders, getParameters, getProgressListener, setHeaders, setParameters, setProgressListener, withProgressListener

从类继承的方法 java.lang.Object

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

构造器详细资料

GetObjectRequest

public GetObjectRequest(String bucketName,
                String key)

Constructor

参数:

bucketName - Bucket name.

key - Object Key.

GetObjectRequest

public GetObjectRequest(URL absoluteUrl,
                Map<String,String> requestHeaders)

Constructor with presigned Url and user's custom headers.

参数:

absoluteUrl - Signed url.

requestHeaders - Request headers.

方法详细资料

getRange

public long[] getRange()

Gets the range of the object to download. The range is in the form of {start, end}---start and end is position of the object's content.

返回:

The range of the object to download.

setRange

public void setRange(long start,
            long end)

Sets the range of the object to download (optional).

参数:

start -

Start position

When the start is non-negative, it means the starting position to download. When the start is -1, it means the range is determined by the end only and the end could not be -1. For example, when start is -1 and end is 100. It means the download range will be the last 100 bytes.

end -

End position

When the end is non-negative, it means the ending position to download. When the end is -1, it means the range is determined by the start only and the start could not be -1. For example, when end is -1 and start is 100. It means the download range will be all exception first 100 bytes.

withRange

public GetObjectRequest withRange(long start,
                         long end)

Sets the range of the object to download and return current GetObjectRequest instance (this).

参数:

start -

Start position

When the start is non-negative, it means the starting position to download. When the start is -1, it means the range is determined by the end only and the end could not be -1. For example, when start is -1 and end is 100. It means the download range will be the last 100 bytes.

end -

End position

When the end is non-negative, it means the ending position to download. When the end is -1, it means the range is determined by the start only and the start could not be -1. For example, when end is -1 and start is 100. It means the download range will be all exception first 100 bytes.

getMatchingETagConstraints

public List<String> getMatchingETagConstraints()

Gets the matching Etag constraints. If the first ETag returned matches the object's ETag, the file would be downloaded. Currently OSS only supports one ETag. Otherwise, return precondition failure (412).

返回:

The list of expected ETags.

setMatchingETagConstraints

public void setMatchingETagConstraints(List<String> eTagList)

Sets the matching Etag constraints. If the first ETag returned matches the object's ETag, the file would be downloaded. Otherwise, return precondition failure (412).

参数:

eTagList - The expected ETag list. OSS only supports one ETag.

clearMatchingETagConstraints

public void clearMatchingETagConstraints()

getNonmatchingETagConstraints

public List<String> getNonmatchingETagConstraints()

Gets the non-matching Etag constraints. If the first ETag returned does not match the object's ETag, the file would be downloaded. Currently OSS only supports one ETag. Otherwise, return precondition failure (412).

返回:

The list of expected ETags (only the first one matters though).

setNonmatchingETagConstraints

public void setNonmatchingETagConstraints(List<String> eTagList)

Sets the non-matching Etag constraints. If the first ETag returned does not match the object's ETag, the file would be downloaded. Currently OSS only supports one ETag. Otherwise, returns precondition failure (412).

参数:

eTagList - The list of expected ETags (only the first one matters though).

clearNonmatchingETagConstraints

public void clearNonmatchingETagConstraints()

getUnmodifiedSinceConstraint

public Date getUnmodifiedSinceConstraint()

Gets the unmodified since constraints. If the timestamp returned is equal or later than the actual file's modified time, the file would be downloaded. Otherwise, the download API returns precondition failure (412).

返回:

The timestamp.

setUnmodifiedSinceConstraint

public void setUnmodifiedSinceConstraint(Date date)

Sets the unmodified since constraints. If the timestamp specified in date parameter is equal or later than the actual file's modified time, the file would be downloaded. Otherwise, the download API returns precondition failure (412).

参数:

date - The timestamp.

getModifiedSinceConstraint

public Date getModifiedSinceConstraint()

Gets the modified since constraints. If the timestamp returned is earlier than the actual file's modified time, the file would be downloaded. Otherwise, the download API returns precondition failure (412).

返回:

“If-Modified-Since” timestamp.

setModifiedSinceConstraint

public void setModifiedSinceConstraint(Date date)

Sets the modified since constraints. If the timestamp returned is earlier than the actual file's modified time, the file would be downloaded. Otherwise, the download API returns precondition failure (412).

参数:

date - “If-Modified-Since” parameter.

getResponseHeaders

public ResponseHeaderOverrides getResponseHeaders()

Gets the response headers to override.

返回:

The response headers to override.

setResponseHeaders

public void setResponseHeaders(ResponseHeaderOverrides responseHeaders)

Sets the response headers to override (optional).

参数:

responseHeaders - The response headers to override.

getAbsoluteUri

public URL getAbsoluteUri()

setAbsoluteUri

public void setAbsoluteUri(URL absoluteUri)

isUseUrlSignature

public boolean isUseUrlSignature()

setUseUrlSignature

public void setUseUrlSignature(boolean useUrlSignature)

getProcess

public String getProcess()

setProcess

public void setProcess(String process)