XML, XSLT info by pran sukh on Python Hunter blog.
阿新 • • 發佈：2018-12-29
What is XML?
Many computer systems contain data in incompatible formats. Exchanging data between incompatible systems (or upgraded systems) is a time-consuming task for web developers. Large amounts of data must be converted, and incompatible data is often lost.
XML stores data in plain text format. This provides a software- and hardware-independent way of storing, transporting, and sharing data.
XML also makes it easier to expand or upgrade to new operating systems, new applications, or new browsers, without losing data.
With XML, data can be available to all kinds of "reading machines" like people, computers, voice machines, news feeds, etc.
XML:-
A prolog defines the XML version and the character encoding: xml document can contain international characters like norwegian øæå
<<less than >>greater than &&ersand ''apostrophe ""quotation mark
Self closing tags
<element attribute="value"/>
and
<element attribute="value"></element>
produces the same result.
Elements names are Case-sensitive, must start with letter or _ , can not start with xml, can contain letter, digits, -, _, dots but no spaces.
but, as best prectice avoid - and dots ....
######### NameSpace ##########
NameSpaces are declared in xml to avoid confusion among predefined xml/html tags and user defined tags.
or you can define the xmlns here in the element itself. now this table tag will be used as piece of furniture.
Post by post you will learn the inner XML and XLST Tags, their usage and working and beautify the xml data presentation with use of XSLT.
Thanks.
Bonus Tip:- If you are getting following issue while starting Tomcat server
Issue:-
All you have to do is skip the scanning of following jar files, for that make the following changes to your context.xml file of apache tomcat location:- apacheHome/conf/context.xml
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | <?xml version="1.0" encoding="UTF-8"?> <bookstore> <book category="cooking"> <title lang="en">Everyday Italian</title> <author> |
A prolog defines the XML version and the character encoding: xml document can contain international characters like norwegian øæå
1 2 3 4 5 | <msg> salary < 1000 </msg> to avoid the error replace the "<" with entity reference: <msg> salary < 1000 </msg> |
<<less than >>greater than &&ersand ''apostrophe ""quotation mark
Self closing tags
<element attribute="value"/>
and
<element attribute="value"></element>
produces the same result.
Elements names are Case-sensitive, must start with letter or _ , can not start with xml, can contain letter, digits, -, _, dots but no spaces.
but, as best prectice avoid - and dots ....
######### NameSpace ##########
NameSpaces are declared in xml to avoid confusion among predefined xml/html tags and user defined tags.
1 2 3 4 5 6 7 8 | <root xmlns:h="http://www.w3.org/TR/html4/"> <h:table> <h:tr> <h:td>Apples</h:td> <h:td>Bananas</h:td> </h:tr> </h:table> |
1 2 3 4 5 | <table xmlns="https://www.MySite.com/furniture"> <name>African Coffee Table</name> <width>80</width> <length>120</length> </table> |
Thanks.
Bonus Tip:- If you are getting following issue while starting Tomcat server
Issue:-
1 2 | SEVERE: Unable to process Jar entry [module-info.class] from Jar [file:/E:/PARAMLunaWorkSpace/.metadata/.plugins/org.eclipse.wst.server.core/tmp1/wtpwebapps/RestWithJerrsy/WEB-INF/lib/yasson-1.0.jar] for annotations org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19 |
1 2 3 4 5 6 7 8 9 | <JarScanner> <JarScanFilter pluggabilitySkip="${tomcat.util.scan.StandardJarScanFilter.jarsToSkip}, javax.json-api-1.1.jar, javax.json.bind-api-1.0.jar, javax.json-1.1.jar, yasson-1.0.jar" /> </JarScanner> |