MimePart (Java EE 5 SDK)

javax.mail.internet Interface MimePart

所有父接口:

Part

所有已知实现子孙类:

MimeBodyPart, MimeMessage, PreencodedMimeBodyPart

public interface MimePart

extends Part

The MimePart interface models an Entity as defined by MIME (RFC2045, Section 2.4).

MimePart extends the Part interface to add additional RFC822 and MIME specific semantics and attributes. It provides the base interface for the MimeMessage and MimeBodyPart classes

RFC822 and MIME header fields must contain only US-ASCII characters. If a header contains non US-ASCII characters, it must be encoded as per the rules in RFC 2047. The MimeUtility class provided in this package can be used to to achieve this. Callers of the setHeader, addHeader, and addHeaderLine methods are responsible for enforcing the MIME requirements for the specified headers. In addition, these header fields must be folded (wrapped) before being sent if they exceed the line length limitation for the transport (1000 bytes for SMTP). Received headers may have been folded. The application is responsible for folding and unfolding headers as appropriate.

作者:

John Mani

另请参见:

MimeUtility, Part

getHeader

String getHeader(String name,
                 String delimiter)
                 throws MessagingException

Get the values of all header fields available for this header, returned as a single String, with the values separated by the delimiter. If the delimiter is null, only the first value is returned.

参数:

name - the name of this header

delimiter - delimiter between fields in returned string

返回:

the value fields for all headers with this name

抛出异常:

MessagingException

addHeaderLine

void addHeaderLine(String line)
                   throws MessagingException

Add a raw RFC822 header-line.

抛出异常:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this Part is obtained from a READ_ONLY folder

MessagingException

getAllHeaderLines

Enumeration getAllHeaderLines()
                              throws MessagingException

Get all header lines as an Enumeration of Strings. A Header line is a raw RFC822 header-line, containing both the "name" and "value" field.

抛出异常:

MessagingException

getMatchingHeaderLines

Enumeration getMatchingHeaderLines(String[] names)
                                   throws MessagingException

Get matching header lines as an Enumeration of Strings. A Header line is a raw RFC822 header-line, containing both the "name" and "value" field.

抛出异常:

MessagingException

getNonMatchingHeaderLines

Enumeration getNonMatchingHeaderLines(String[] names)
                                      throws MessagingException

Get non-matching header lines as an Enumeration of Strings. A Header line is a raw RFC822 header-line, containing both the "name" and "value" field.

抛出异常:

MessagingException

getEncoding

String getEncoding()
                   throws MessagingException

Get the transfer encoding of this part.

返回:

content-transfer-encoding

抛出异常:

MessagingException

getContentID

String getContentID()
                    throws MessagingException

Get the Content-ID of this part. Returns null if none present.

返回:

content-ID

抛出异常:

MessagingException

getContentMD5

String getContentMD5()
                     throws MessagingException

Get the Content-MD5 digest of this part. Returns null if none present.

返回:

content-MD5

抛出异常:

MessagingException

setContentMD5

void setContentMD5(String md5)
                   throws MessagingException

Set the Content-MD5 of this part.

参数:

md5 - the MD5 value

抛出异常:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this Part is obtained from a READ_ONLY folder

MessagingException

getContentLanguage

String[] getContentLanguage()
                            throws MessagingException

Get the language tags specified in the Content-Language header of this MimePart. The Content-Language header is defined by RFC 1766. Returns null if this header is not available.

抛出异常:

MessagingException

setContentLanguage

void setContentLanguage(String[] languages)
                        throws MessagingException

Set the Content-Language header of this MimePart. The Content-Language header is defined by RFC1766.

参数:

languages - array of language tags

抛出异常:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this Part is obtained from a READ_ONLY folder

MessagingException

setText

void setText(String text)
             throws MessagingException

Convenience method that sets the given String as this part's content, with a MIME type of "text/plain". If the string contains non US-ASCII characters. it will be encoded using the platform's default charset. The charset is also used to set the "charset" parameter.

Note that there may be a performance penalty if text is large, since this method may have to scan all the characters to determine what charset to use.

If the charset is already known, use the setText method that takes the charset parameter.

规范说明:

setText in interface Part

参数:

text - the text content to set

抛出异常:

MessagingException - if an error occurs

另请参见:

setText(String text, String charset)

setText

void setText(String text,
             String charset)
             throws MessagingException

Convenience method that sets the given String as this part's content, with a MIME type of "text/plain" and the specified charset. The given Unicode string will be charset-encoded using the specified charset. The charset is also used to set "charset" parameter.

参数:

text - the text content to set

charset - the charset to use for the text

抛出异常:

MessagingException - if an error occurs

setText

void setText(String text,
             String charset,
             String subtype)
             throws MessagingException

Convenience method that sets the given String as this part's content, with a primary MIME type of "text" and the specified MIME subtype. The given Unicode string will be charset-encoded using the specified charset. The charset is also used to set the "charset" parameter.

参数:

text - the text content to set

charset - the charset to use for the text

subtype - the MIME subtype to use (e.g., "html")

抛出异常:

MessagingException - if an error occurs

从以下版本开始:

JavaMail 1.4

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