MimePartDataSource (Java EE 5)

A utility class that implements a DataSource out of a MimePart. This class is primarily meant for service providers.

Author:

John Mani

See Also:

MimePart, DataSource

英文文档：

part

protected MimePart part

The MimePart that provides the data for this DataSource.

Since:

JavaMail 1.4

public MimePartDataSource(MimePart part)
构造方法，根据 MimePart 构造 DataSource。

英文文档：

MimePartDataSource

public MimePartDataSource(MimePart part)

Constructor, that constructs a DataSource from a MimePart.

public java.io.InputStream getInputStream() throws java.io.IOException
返回此 MimePart 的输入流。

此方法根据此 MimePart 的 Content-Transfer-Encoding 属性的不同应用相应的传输编码。因此，返回的输入流是已解码的字节流。

此实现使用 getContentStream() 方法从 Part 中获取原始内容，并使用 MimeUtility.decode() 方法对它进行解码。

return	已解码的输入流
See also	getContentStream, getContentStream, decode

英文文档：

getInputStream

public InputStream getInputStream()
                           throws IOException

Returns an input stream from this MimePart.

This method applies the appropriate transfer-decoding, based on the Content-Transfer-Encoding attribute of this MimePart. Thus the returned input stream is a decoded stream of bytes.

This implementation obtains the raw content from the Part using the getContentStream() method and decodes it using the MimeUtility.decode() method.

Specified by:

getInputStream in interface DataSource

Returns:

decoded input stream

Throws:

IOException

See Also:

MimeMessage.getContentStream(), MimeBodyPart.getContentStream(), MimeUtility.decode(java.io.InputStream, java.lang.String)

public java.io.OutputStream getOutputStream() throws java.io.IOException
返回输出流的 DataSource 方法。

此实现抛出 UnknownServiceException。

英文文档：

getOutputStream

public OutputStream getOutputStream()
                             throws IOException

DataSource method to return an output stream.

This implementation throws the UnknownServiceException.

Specified by:

getOutputStream in interface DataSource

Returns:

an OutputStream

Throws:

IOException

public String getContentType()
返回此 DataSource 的内容类型。

此实现仅对 MimePart 调用 getContentType 方法。

英文文档：

getContentType

public String getContentType()

Returns the content-type of this DataSource.

This implementation just invokes the getContentType method on the MimePart.

Specified by:

getContentType in interface DataSource

Returns:

the MIME Type

public String getName()
返回名称的 DataSource 方法。

此实现仅返回一个空字符串。

英文文档：

getName

public String getName()

DataSource method to return a name.

This implementation just returns an empty string.

Specified by:

getName in interface DataSource

Returns:

the name of the object.

public MessageContext getMessageContext()
返回当前部分的 MessageContext。

since

en JavaMail 1.1

英文文档：

getMessageContext

public MessageContext getMessageContext()

Return the MessageContext for the current part.

Specified by:

getMessageContext in interface MessageAware

Since:

JavaMail 1.1

Copyright 2007 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.