{"id":4817,"date":"2021-08-06T10:31:51","date_gmt":"2021-08-06T10:31:51","guid":{"rendered":"https:\/\/www.bearloga.space\/?page_id=4817"},"modified":"2021-08-06T10:31:51","modified_gmt":"2021-08-06T10:31:51","slug":"java-xpath-parser-zapros-xml-dokumenta","status":"publish","type":"page","link":"https:\/\/www.bearloga.space\/en\/java-xpath-parser-zapros-xml-dokumenta\/","title":{"rendered":"Java XPath Parser \u2014 \u0417\u0430\u043f\u0440\u043e\u0441 XML-\u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430"},"content":{"rendered":"\n

\u0412\u043e\u0442 \u0432\u0445\u043e\u0434\u043d\u043e\u0439 \u0442\u0435\u043a\u0441\u0442\u043e\u0432\u044b\u0439 \u0444\u0430\u0439\u043b, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u044b \u0434\u043e\u043b\u0436\u043d\u044b \u0437\u0430\u043f\u0440\u043e\u0441\u0438\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
XPathParserDemo.java<\/h3>\n\n\n\n
package com.tutorialspoint.xml;\n\nimport java.io.File;\nimport java.io.IOException;\n\nimport javax.xml.parsers.DocumentBuilderFactory;\nimport javax.xml.parsers.DocumentBuilder;\nimport javax.xml.parsers.ParserConfigurationException;\nimport javax.xml.xpath.XPath;\nimport javax.xml.xpath.XPathConstants;\nimport javax.xml.xpath.XPathExpressionException;\nimport javax.xml.xpath.XPathFactory;\n\nimport org.w3c.dom.Document;\nimport org.w3c.dom.NodeList;\nimport org.w3c.dom.Node;\nimport org.w3c.dom.Element;\nimport org.xml.sax.SAXException;\n\npublic class XPathParserDemo {\n\n   public static void main(String[] args) {\n      \n      try {\n         File inputFile = new File(\"input.txt\");\n         DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();\n         DocumentBuilder dBuilder;\n\n         dBuilder = dbFactory.newDocumentBuilder();\n\n         Document doc = dBuilder.parse(inputFile);\n         doc.getDocumentElement().normalize();\n\n         XPath xPath =  XPathFactory.newInstance().newXPath();\n\n         String expression = \"\/class\/student[@rollno = '493']\";\n         NodeList nodeList = (NodeList) xPath.compile(expression).evaluate(\n            doc, XPathConstants.NODESET);\n         \n         for (int i = 0; i < nodeList.getLength(); i++) {\n            Node nNode = nodeList.item(i);\n            System.out.println(\"\\nCurrent Element :\" + nNode.getNodeName());\n            \n            if (nNode.getNodeType() == Node.ELEMENT_NODE) {\n               Element eElement = (Element) nNode;\n               System.out.println(\"Student roll no : \" \n                  + eElement.getAttribute(\"rollno\"));\n               System.out.println(\"First Name : \" \n                  + eElement\n                  .getElementsByTagName(\"firstname\")\n                  .item(0)\n                  .getTextContent());\n               System.out.println(\"Last Name : \" \n                  + eElement\n                  .getElementsByTagName(\"lastname\")\n                  .item(0)\n                  .getTextContent());\n               System.out.println(\"Nick Name : \" \n                  + eElement\n                  .getElementsByTagName(\"nickname\")\n                  .item(0)\n                  .getTextContent());\n               System.out.println(\"Marks : \" \n                  + eElement\n                  .getElementsByTagName(\"marks\")\n                  .item(0)\n                  .getTextContent());\n            }\n         }\n      } catch (ParserConfigurationException e) {\n         e.printStackTrace();\n      } catch (SAXException e) {\n         e.printStackTrace();\n      } catch (IOException e) {\n         e.printStackTrace();\n      } catch (XPathExpressionException e) {\n         e.printStackTrace();\n      }\n   }\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"
\u0412\u043e\u0442 \u0432\u0445\u043e\u0434\u043d\u043e\u0439 \u0442\u0435\u043a\u0441\u0442\u043e\u0432\u044b\u0439 \u0444\u0430\u0439\u043b, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u044b \u0434\u043e\u043b\u0436\u043d\u044b \u0437\u0430\u043f\u0440\u043e\u0441\u0438\u0442\u044c \u2014 <?xml version = “1.0”?> <class> <student rollno = “393”> <firstname>dinkar<\/firstname> <lastname>kad<\/lastname> […]<\/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-4817","page","type-page","status-publish","hentry","category-java-xml"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/pages\/4817","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/comments?post=4817"}],"version-history":[{"count":0,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/pages\/4817\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/media?parent=4817"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/categories?post=4817"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/tags?post=4817"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}