MultipartDataSource (Java EE 5)

MultipartDataSource 是包含正文部分的 DataSource。此接口可以感知此类 DataSources 并使用适当的方法访问 BodyParts，能更有效地实现“邮件感知的”DataContentHandlers。

注意，MultipartDataSource 的数据也可以用作输入流。

此接口通常由预先解析 multipart 正文的提供者实现，例如 IMAP 提供者。

version	1.8, 07/05/04
See also	javax.activation.DataSource

英文文档：

MultipartDataSource is a DataSource that contains body parts. This allows "mail aware" DataContentHandlers to be implemented more efficiently by being aware of such DataSources and using the appropriate methods to access BodyParts.

Note that the data of a MultipartDataSource is also available as an input stream.

This interface will typically be implemented by providers that preparse multipart bodies, for example an IMAP provider.

Version:

1.8, 07/05/04

Author:

John Mani

See Also:

DataSource

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Method Summary
BodyPart	getBodyPart(int index)           Get the specified Part.
int	getCount()           Return the number of enclosed BodyPart objects.

 

Methods inherited from interface javax.activation.DataSource
getContentType, getInputStream, getName, getOutputStream

 

Method Detail

public int getCount()
返回封闭 BodyPart 对象的数量。

return

部分数

英文文档：

getCount

int getCount()

Return the number of enclosed BodyPart objects.

Returns:

number of parts

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public BodyPart getBodyPart(int index) throws MessagingException
获取指定的 Part。Part 是从 0 开始编号的。

index	所需 Part 的索引
return	Part
Throws	IndexOutOfBoundsException: 如果给定索引超出范围。
Throws	MessagingException:

英文文档：

getBodyPart

BodyPart getBodyPart(int index)
                     throws MessagingException

Get the specified Part. Parts are numbered starting at 0.

Parameters:

index - the index of the desired Part

Returns:

the Part

Throws:

IndexOutOfBoundsException - if the given index is out of range.

MessagingException

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