Package jakarta.mail.internet

Interface MimePart

All Superinterfaces:

Part

All Known Implementing Classes:

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

A note on RFC822 and MIME headers

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.

Author:

John Mani

See Also:

• MimeUtility
• Part

Field Summary

Fields inherited from interface jakarta.mail.Part

ATTACHMENT, INLINE

Method Summary

Modifier and Type	Method	Description
void	addHeaderLine(String line)	Add a raw RFC822 header-line.
Enumeration<String>	getAllHeaderLines()	Get all header lines as an Enumeration of Strings.
String	getContentID()	Get the Content-ID of this part.
String[]	getContentLanguage()	Get the language tags specified in the Content-Language header of this MimePart.
String	getContentMD5()	Get the Content-MD5 digest of this part.
String	getEncoding()	Get the transfer encoding of this part.
String	getHeader(String name, String delimiter)	Get the values of all header fields available for this header, returned as a single String, with the values separated by the delimiter.
Enumeration<String>	getMatchingHeaderLines(String[] names)	Get matching header lines as an Enumeration of Strings.
Enumeration<String>	getNonMatchingHeaderLines(String[] names)	Get non-matching header lines as an Enumeration of Strings.
void	setContentLanguage(String[] languages)	Set the Content-Language header of this MimePart.
void	setContentMD5(String md5)	Set the Content-MD5 of this part.
void	setText(String text)	Convenience method that sets the given String as this part's content, with a MIME type of "text/plain".
void	setText(String text, String charset)	Convenience method that sets the given String as this part's content, with a MIME type of "text/plain" and the specified charset.
void	setText(String text, String charset, String subtype)	Convenience method that sets the given String as this part's content, with a primary MIME type of "text" and the specified MIME subtype.

Methods inherited from interface jakarta.mail.Part

addHeader, getAllHeaders, getContent, getContentType, getDataHandler, getDescription, getDisposition, getFileName, getHeader, getInputStream, getLineCount, getMatchingHeaders, getNonMatchingHeaders, getSize, isMimeType, removeHeader, setContent, setContent, setDataHandler, setDescription, setDisposition, setFileName, setHeader, writeTo

Method Details

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.

Parameters:

name - the name of this header

delimiter - delimiter between fields in returned string

Returns:

the value fields for all headers with this name

Throws:

MessagingException - for failures

addHeaderLine

void addHeaderLine(String line)
            throws MessagingException

Add a raw RFC822 header-line.

Parameters:

line - the line to add

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this Part is obtained from a READ_ONLY folder

MessagingException - for other failures

getAllHeaderLines

Enumeration<String> 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.

Returns:

an Enumeration of Strings

Throws:

MessagingException - for failures

getMatchingHeaderLines

Enumeration<String> 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.

Parameters:

names - the headers to return

Returns:

an Enumeration of Strings

Throws:

MessagingException - for failures

getNonMatchingHeaderLines

Enumeration<String> 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.

Parameters:

names - the headers to not return

Returns:

an Enumeration of Strings

Throws:

MessagingException - for failures

getEncoding

String getEncoding()
            throws MessagingException

Get the transfer encoding of this part.

Returns:

content-transfer-encoding

Throws:

MessagingException - for failures

getContentID

String getContentID()
             throws MessagingException

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

Returns:

content-ID

Throws:

MessagingException - for failures

getContentMD5

String getContentMD5()
              throws MessagingException

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

Returns:

content-MD5

Throws:

MessagingException - for failures

setContentMD5

void setContentMD5(String md5)
            throws MessagingException

Set the Content-MD5 of this part.

Parameters:

md5 - the MD5 value

Throws:

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.

Returns:

array of content language strings

Throws:

MessagingException - for failures

setContentLanguage

void setContentLanguage(String[] languages)
                 throws MessagingException

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

Parameters:

languages - array of language tags

Throws:

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.

Specified by:

setText in interface Part

Parameters:

text - the text content to set

Throws:

MessagingException - if an error occurs

See Also:

• 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.

Parameters:

text - the text content to set

charset - the charset to use for the text

Throws:

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.

Parameters:

text - the text content to set

charset - the charset to use for the text

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

Throws:

MessagingException - if an error occurs

Since:

JavaMail 1.4