Trích xuất siêu dữ liệu EML qua Java

MapiMessage outlookMessageFile = MapiMessage.fromFile(dataDir + "messageMapi.eml");

//Get the MapiProperties collection
MapiPropertyCollection coll = outlookMessageFile.getProperties();

//Access the MapiPropertyTag.PR_SUBJECT property
MapiProperty prop = (MapiProperty) coll.get_Item((Object) MapiPropertyTag.PR_SUBJECT);

//If the MapiProperty is not found, check the MapiProperty.PR_SUBJECT_W
//which is a unicode peer of MapiPropertyTag.PR_SUBJECT
if (prop == null) {
	prop = (MapiProperty) coll.get_Item(MapiPropertyTag.PR_SUBJECT_W);
}

//If it cannot be found
if (prop == null) {
	System.out.println("Mapi property could not be found.");
} else {
	//Get the property data as string
	String strSubject = prop.getString();
	System.out.println("Subject: " + strSubject);
}

//Read internet code page property
prop = (MapiProperty) coll.get_Item(MapiPropertyTag.PR_INTERNET_CPID);
if (prop != null) {
	System.out.println("Code page: " + prop.getLong());
}