com.mongodb.gridfs

类 GridFSDBFile

java.lang.Object

com.mongodb.gridfs.GridFSFile

com.mongodb.gridfs.GridFSDBFile

所有已实现的接口:

DBObject, BSONObject

public class GridFSDBFile
extends GridFSFile

This class enables retrieving a GridFS file metadata and content. Operations include:

• Writing data to a file on disk or an OutputStream
• Creating an InputStream to stream the data into

MongoDB documentation

GridFS

构造器概要

构造器

构造器和说明
GridFSDBFile()

方法概要

限定符和类型	方法和说明
java.io.InputStream	getInputStream() Returns an InputStream from which data can be read.
long	writeTo(java.io.File file) Writes the file's data to a file on disk.
long	writeTo(java.io.OutputStream out) Writes the file's data to an OutputStream.
long	writeTo(java.lang.String filename) Writes the file's data to a file on disk.

从类继承的方法 com.mongodb.gridfs.GridFSFile

containsField, containsKey, get, getAliases, getChunkSize, getContentType, getFilename, getGridFS, getId, getLength, getMD5, getMetaData, getUploadDate, isPartialObject, keySet, markAsPartialObject, numChunks, put, putAll, putAll, removeField, save, setGridFS, setMetaData, toMap, toString, validate

从类继承的方法 java.lang.Object

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

构造器详细资料

GridFSDBFile

public GridFSDBFile()

方法详细资料

getInputStream

public java.io.InputStream getInputStream()

Returns an InputStream from which data can be read.

返回:

the input stream

writeTo

public long writeTo(java.lang.String filename)
             throws java.io.IOException

Writes the file's data to a file on disk.

参数:

filename - the file name on disk

返回:

number of bytes written

抛出:

java.io.IOException - if there are problems writing to the file

writeTo

public long writeTo(java.io.File file)
             throws java.io.IOException

Writes the file's data to a file on disk.

参数:

file - the File object

返回:

number of bytes written

抛出:

java.io.IOException - if there are problems writing to the file

writeTo

public long writeTo(java.io.OutputStream out)
             throws java.io.IOException

Writes the file's data to an OutputStream.

参数:

out - the OutputStream

返回:

number of bytes written

抛出:

java.io.IOException - if there are problems writing to out