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XML

XML. Programación web. Qué es XML?. XML stands for e X tensible  M arkup  L anguage. XML is designed to transport and store data. XML is important to know, and very easy to learn. Transferencia de Archivos. Archivos Planos

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XML

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  1. XML Programación web

  2. Qué es XML? • XML stands for eXtensible Markup Language. • XML is designed to transport and store data. • XML is important to know, and very easy to learn.

  3. Transferencia de Archivos • Archivos Planos • Archivos Separados por caracteres especiales Pipes (|), comas (,), etc.

  4. Archivos de configuración • web.xml • faces-config.xml • hibernate.xml • applicationContext.xml • Ant (Automatización de • pruebas)

  5. Web.xml J2EE JspServlets Project <?xmlversion="1.0" encoding="ISO-8859-1"?> <web-appxmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4"> <display-name>Servlet de ejemplo</display-name> <description> Hola Mundo Servlet </description> <!-- Publicamos nuestro servletaqui --> <servlet> <servlet-name>HWServlet</servlet-name> <servlet-class>com.softtek.servlet.ejemplos.HelloWorldServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>HWServlet</servlet-name> <url-pattern>/HelloWorldServlet</url-pattern> </servlet-mapping> <!-- Fin de la publicacion de servlets --> </web-app>

  6. Intercambio de datos entre diferentes plataformas Web Services XML

  7. Ejemplo 1. Nota. <?xml version="1.0" encoding="UTF-8"?><note>  <to>Tove</to>  <from>Jani</from>  <heading>Reminder</heading>  <body>Don't forget me this weekend!</body></note>

  8. Ejemplo 2. Bookstore <bookstore>  <book category="COOKING">    <title lang="en">Everyday Italian</title>    <author>Giada De Laurentiis</author>    <year>2005</year>    <price>30.00</price>  </book>  <book category="CHILDREN">    <title lang="en">Harry Potter</title>    <author>J K. Rowling</author>    <year>2005</year>    <price>29.99</price>  </book>  <book category="WEB">    <title lang="en">Learning XML</title>    <author>Erik T. Ray</author>    <year>2003</year>    <price>39.95</price>  </book></bookstore>

  9. Ejemplo 3.- Bookstore 2 (multiples elementos). • <bookstore>  <book-category="COOKING"> <book>    <title lang="en">Everyday Italian</title>     <author>Giada De Laurentiis</author>    <year>2005</year>     <price>30.00</price> • </book> <book>    <title lang="en">Everyday Spanish Food</title>     <author>Giada De Laurentiis</author>    <year>2012</year>     <price>60.00</price> • </book> • </book-cateogory> • </bookstore>

  10. XML DTD Note.dtd <!DOCTYPE note [ <!ELEMENT note (to,from,heading,body)> <!ELEMENT to (#PCDATA)> <!ELEMENT from (#PCDATA)> <!ELEMENT heading (#PCDATA)> <!ELEMENT body (#PCDATA)> ]> • An XML document with correct syntax is called "Well Formed". • An XML document validated against a DTD is "Well Formed" and "Valid".

  11. Referencias • http://w3schools.com/xml/

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