ð° XMLæŽåœ¢
XMLããŒã¿ãããããªã€ã³ãã³ãä»ãã§æŽåœ¢ããŸãã¯äžèŠãªç©ºçœã»æ¹è¡ãåãé€ããŠå§çž®ããããŒã«ã§ãããã©ãŠã¶æšæºã®XMLããŒãµãŒã䜿çšããŠãããããæ£ããæ§æè§£æã«åºã¥ãã倿ãã§ããŸãã
äœ¿ãæ¹
- æŽåœ¢ãŸãã¯å§çž®ãããXMLãå·ŠåŽã®å ¥åæ¬ã«è²Œãä»ããŸãã
- ãæŽåœ¢ããŸãã¯ãå§çž®ãã¢ãŒããéžã³ãã€ã³ãã³ãå¹ (æŽåœ¢æ)ãèšå®ããŸãã
- å®è¡ãã¿ã³ãæŒããšãå³åŽã«å€æçµæã衚瀺ãããŸããã³ããŒãã¿ã³ã§ã¯ãªããããŒãã«ã³ããŒã§ããŸãã
èšç®ã®ä»çµã¿
ãã®ããŒã«ã¯ãXMLãèªã¿ãããããã«æ¹è¡ãšåäžããå ¥ããŠæŽåœ¢ããããéã«äžèŠãªç©ºçœãåãé€ããŠ1è¡ã«å§çž®ïŒãããã¡ã€ïŒãããããŸãã ãŸãããã©ãŠã¶æšæºã®DOMParserã§XMLãè§£æããŸããã¿ã°ã®éãå¿ããªã©ãXMLãšããŠæ£ãããªãå Žåã¯ãšã©ãŒã衚瀺ããŸããæŽåœ¢ã§ã¯ãèŠçŽ ãå ¥ãåã®æ·±ãã«å¿ããŠåäžãããåèŠçŽ ã®ãªãèŠçŽ ã¯ <tag /> ã®åœ¢ã«ãããã¹ãã ããæã€èŠçŽ ã¯1è¡ã«ãŸãšããŸããã³ã¡ã³ããCDATAã»ã¯ã·ã§ã³ãåŠçåœä»€ããã®ãŸãŸæ®ããŸãã è§£æããããã¹ãã屿§ã®å€ã¯ãæžãåºããšãã«ã&ãã &ãã<ãã < ã®ããã«åã³ãšã¹ã±ãŒããããããæŽåœ¢åŸãæ£ããXMLã®ãŸãŸã§ããåäžãã®å¹ ã¯2æåã4æåããéžã¹ãŸãã
èšç®äŸ
å ¥å <root><item id="1"><name>Heron</name><active>true</active></item></root> æŽåœ¢åŸïŒåäžã2ïŒ <root> <item id="1"> <name>Heron</name> <active>true</active> </item> </root> <name>Tom & Jerry</name> ã¯ãæŽåœ¢åŸã Tom & Jerry ã®ãŸãŸåºåãããŸãã
䜿çšäžã®æ³šæ
- XML宣èšïŒ<?xml version="1.0"?>ïŒã¯ãæŽåœ¢åŸã®åºåã«ã¯å«ãŸããŸãããå¿ èŠãªå Žåã¯å é ã«æžãè¶³ããŠãã ããã
- æç« ã®äžã«ã¿ã°ãæ··ãããæ··åå 容ãã§ã¯ãããã¹ãã®ååŸã®ç©ºçœãæŽçããããããèŠãç®ã®ééãå€ããããšããããŸãã
- å ¥åããXMLã¯ãã©ãŠã¶å ã§åŠçãããå€éšã«éä¿¡ãããããšã¯ãããŸããã
ãããã質å
äžæ£ãªXMLãå ¥åãããšã©ããªããŸãã?
æ§æãšã©ãŒãšããŠæ±ããããšã©ãŒã¡ãã»ãŒãžã衚瀺ãããŸããã¿ã°ã®éãå¿ãã屿§å€ã®ã¯ã©ãŒãæŒãããªãã確èªããŠãã ããã
åå空é(namespace)ä»ãã®XMLã«ã察å¿ããŠããŸãã?
ã¯ãããã©ãŠã¶æšæºã®XMLããŒãµãŒã§è§£æããŠãããããxmlns屿§ãå«ãXMLãæ§æçã«æ£ããåŠçãããŸãã
èªå·±çµäºã¿ã°(ã»ã«ãã¯ããŒãžã³ã°ã¿ã°)ã¯ã©ãæ±ãããŸãã?
åèŠçŽ ãæããªãèŠçŽ ã¯ãæŽåœ¢æã« <tag /> ã®åœ¢åŒã§åºåãããŸãã