{"id":4807,"date":"2021-08-06T10:27:44","date_gmt":"2021-08-06T10:27:44","guid":{"rendered":"https:\/\/www.bearloga.space\/?page_id=4807"},"modified":"2021-08-06T10:27:45","modified_gmt":"2021-08-06T10:27:45","slug":"java-stax-parser-razbirat-xml-dokument","status":"publish","type":"page","link":"https:\/\/www.bearloga.space\/uk\/java-stax-parser-razbirat-xml-dokument\/","title":{"rendered":"Java StAX Parser \u2014 \u0440\u0430\u0437\u0431\u0438\u0440\u0430\u0442\u044c XML-\u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442"},"content":{"rendered":"\n

\u0412\u043e\u0442 \u0432\u0445\u043e\u0434\u043d\u043e\u0439 XML-\u0444\u0430\u0439\u043b, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043d\u0430\u043c \u043d\u0443\u0436\u043d\u043e \u043f\u0440\u043e\u0430\u043d\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u2014<\/p>\n\n\n\n

<?xml version = \"1.0\"?>\n<class>\n   <student rollno = \"393\">\n      <firstname>dinkar<\/firstname>\n      <lastname>kad<\/lastname>\n      <nickname>dinkar<\/nickname>\n      <marks>85<\/marks>\n   <\/student>\n   \n   <student rollno = \"493\">\n      <firstname>Vaneet<\/firstname>\n      <lastname>Gupta<\/lastname>\n      <nickname>vinni<\/nickname>\n      <marks>95<\/marks>\n   <\/student>\n   \n   <student rollno = \"593\">\n      <firstname>jasvir<\/firstname>\n      <lastname>singn<\/lastname>\n      <nickname>jazz<\/nickname>\n      <marks>90<\/marks>\n   <\/student>\n<\/class><\/pre>\n\n\n\n
StAXParserDemo.java<\/h3>\n\n\n\n
package com.tutorialspoint.xml;\n\nimport java.io.FileNotFoundException;\nimport java.io.FileReader;\nimport java.util.Iterator;\n\nimport javax.xml.stream.XMLEventReader;\nimport javax.xml.stream.XMLInputFactory;\nimport javax.xml.stream.XMLStreamConstants;\nimport javax.xml.stream.XMLStreamException;\nimport javax.xml.stream.events.Attribute;\nimport javax.xml.stream.events.Characters;\nimport javax.xml.stream.events.EndElement;\nimport javax.xml.stream.events.StartElement;\nimport javax.xml.stream.events.XMLEvent;\n\npublic class StAXParserDemo {\n   public static void main(String[] args) {\n      boolean bFirstName = false;\n      boolean bLastName = false;\n      boolean bNickName = false;\n      boolean bMarks = false;\n      \n      try {\n         XMLInputFactory factory = XMLInputFactory.newInstance();\n         XMLEventReader eventReader =\n         factory.createXMLEventReader(new FileReader(\"input.txt\"));\n\n         while(eventReader.hasNext()) {\n            XMLEvent event = eventReader.nextEvent();\n               \n            switch(event.getEventType()) {\n               \n               case XMLStreamConstants.START_ELEMENT:\n                  StartElement startElement = event.asStartElement();\n                  String qName = startElement.getName().getLocalPart();\n\n               if (qName.equalsIgnoreCase(\"student\")) {\n                  System.out.println(\"Start Element : student\");\n                  Iterator<Attribute> attributes = startElement.getAttributes();\n                  String rollNo = attributes.next().getValue();\n                  System.out.println(\"Roll No : \" + rollNo);\n               } else if (qName.equalsIgnoreCase(\"firstname\")) {\n                  bFirstName = true;\n               } else if (qName.equalsIgnoreCase(\"lastname\")) {\n                  bLastName = true;\n               } else if (qName.equalsIgnoreCase(\"nickname\")) {\n                  bNickName = true;\n               }\n               else if (qName.equalsIgnoreCase(\"marks\")) {\n                  bMarks = true;\n               }\n               break;\n\n               case XMLStreamConstants.CHARACTERS:\n                  Characters characters = event.asCharacters();\n               if(bFirstName) {\n                  System.out.println(\"First Name: \" + characters.getData());\n                  bFirstName = false;\n               }\n               if(bLastName) {\n                  System.out.println(\"Last Name: \" + characters.getData());\n                  bLastName = false;\n               }\n               if(bNickName) {\n                  System.out.println(\"Nick Name: \" + characters.getData());\n                  bNickName = false;\n               }\n               if(bMarks) {\n                  System.out.println(\"Marks: \" + characters.getData());\n                  bMarks = false;\n               }\n               break;\n\n               case XMLStreamConstants.END_ELEMENT:\n                  EndElement endElement = event.asEndElement();\n                  \n               if(endElement.getName().getLocalPart().equalsIgnoreCase(\"student\")) {\n                  System.out.println(\"End Element : student\");\n                  System.out.println();\n               }\n               break;\n            } \n         }\n      } catch (FileNotFoundException e) {\n         e.printStackTrace();\n      } catch (XMLStreamException e) {\n         e.printStackTrace();\n      }\n   }\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"
\u0412\u043e\u0442 \u0432\u0445\u043e\u0434\u043d\u043e\u0439 XML-\u0444\u0430\u0439\u043b, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043d\u0430\u043c \u043d\u0443\u0436\u043d\u043e \u043f\u0440\u043e\u0430\u043d\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u2014 <?xml version = “1.0”?> <class> <student rollno = “393”> <firstname>dinkar<\/firstname> <lastname>kad<\/lastname> <nickname>dinkar<\/nickname> […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[153],"tags":[],"class_list":["post-4807","page","type-page","status-publish","hentry","category-java-xml"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bearloga.space\/uk\/wp-json\/wp\/v2\/pages\/4807","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bearloga.space\/uk\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.bearloga.space\/uk\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.bearloga.space\/uk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bearloga.space\/uk\/wp-json\/wp\/v2\/comments?post=4807"}],"version-history":[{"count":0,"href":"https:\/\/www.bearloga.space\/uk\/wp-json\/wp\/v2\/pages\/4807\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.bearloga.space\/uk\/wp-json\/wp\/v2\/media?parent=4807"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bearloga.space\/uk\/wp-json\/wp\/v2\/categories?post=4807"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bearloga.space\/uk\/wp-json\/wp\/v2\/tags?post=4807"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}