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parsing large XML using SAX in java

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问题 I am trying to parse the stack overflow data dump, one of the tables is called posts.xml which has around 10 million entry in it. Sample xml: <?xml version="1.0" encoding="utf-8"?> <posts> <row Id="1" PostTypeId="1" AcceptedAnswerId="26" CreationDate="2010-07-07T19:06:25.043" Score="10" ViewCount="1192" Body="Now that the Engineer update has come, there will be lots of Engineers building up everywhere. How should this best be handled? " OwnerUserId="11" LastEditorUserId="56"

SAX XML Parsing in android

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XML Code is <?xml version="1.0" encoding="UTF-8" ?> <opml version="1"> <head> <title>Radio</title> <status>200</status> </head> <body> <outline type="link" text="Local" URL="http://..............." key="local" /> <outline type="link" text="Music" URL="http://.............." key="music" /> <outline type="link" text="walk" URL="http://...................." key="walk" /> <outline type="link" text="Sports" URL="http://..........." key="sports" /> <outline type="link" text="Place" URL="http://..............." key="Place" /> <outline type="link" text="Verbal" URL="http://............." key="Verbal"

Android: How Can I display all XML values of same tag name

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I have the ff. XML from a URL: <?xml version="1.0" encoding="ISO-8859-1" ?> <Phonebook> <PhonebookEntry> <firstname>Michael</firstname> <lastname>De Leon</lastname> <Address>5, Cat Street</Address> </PhonebookEntry> <PhonebookEntry> <firstname>John</firstname> <lastname>Smith</lastname> <Address>6, Dog Street</Address> </PhonebookEntry> </Phonebook> I want to display both PhonebookEntry values (firstname,lastname,Address). Currently, my code displays only the PhonebookEntry of John Smith (the last entry). Here's my code. ParsingXML.java package com.example.parsingxml; import java.net.Proxy;

Java XML parsing: taking inner XML using SAX

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问题 I'm parsing an XML file with SAX and at some point I need the inner XML of an element. E.g., for the following XML <a name="abc"> def <a> I need to get the inner XML for the element a , which would be def What's the easiest way to do that? Thanks. Ivan 回答1: For this type of situation I suggest using 2 content handlers. The first is responsible for finding the relevant part of the document, and the second for processing the content. My answer to a similar question (see link below)

Preserve newlines when parsing xml

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I'm using the SAX xml parser to parse some xml data which contains newlines. When using Attributes#getValue, the newline data is lost. How can keep the newlines? you can use this code when getting the String to parse: public void characters(char ch[], int start, int length) { for(int i=start; i<length; i++) if(!Character.isISOControl(ch[i])) content.append(ch[i]); } The solution was to use 
 instead of \n 来源： https://stackoverflow.com/questions/3401111/preserve-newlines-when-parsing-xml

Android: SAX parser progress monitoring

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I have a SAX DefaultHandler which parses an InputStream. I don't know how many elements are in the XML so I can't count them on endElement or simmilar. I do know the byte length of the InputStream (read from the http header) but I can't find a method to get the current bytewise progress of the parsing process. Is there a way to get the current progress (i.e. bits processed) of the parsing process? This is how the DefaultHandler gets called: SAXParserFactory factory = SAXParserFactory.newInstance(); SAXParser parser = factory.newSAXParser(); parser.parse(inputStream, myDefaultHandler); You can

SAX parser to skip some elements which are not to be parsed?

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So, I have a file like <root> <transaction ts="1"> <abc><def></def></abc> </transaction> <transaction ts="2"> <abc><def></def></abc> </transaction> </root> So, I have a condition which says if ts="2" then do something ... Now the problem is when it finds ts="1" it still scans through tags < abc>< def> and then reaches < transaction ts="2"> Is there a way when the condition doesn`t match the parsing breaks and look for the next transaction tag directly? A SAX parser must scan thru all sub trees (like your "< abc>< def>< /def>< /abc>") to know where the next element starts. No way to get around

Validating XSD against W3C XML Schema Definition

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问题 I am generating some XML Schemas and would like to ensure that our generator is creating valid XML Schema documents (Not XML). I was trying to come up with the code to validate the XML Schema document, but failing miserably. I didn't think it would be this complex. private void validateXsd( String xsdAsString ) { try { SAXParserFactory factory = SAXParserFactory.newInstance(); factory.setValidating(true); factory.setNamespaceAware(true); factory.setFeature( "http://apache.org/xml/features

Android XML parse failed Unexpected token

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问题 In my app(game), i need to read a XML script and turn in into a class object; i've completed the entire XML reader via DOM but when i run , i got the following error: 05-08 23:03:22.342: I/System.out(588): XML Pasing Excpetion = org.xml.sax.SAXParseException: Unexpected token (position:TEXT ��...@1:69 in java.io.InputStreamReader@4129a200) i've read some answers about this but they all failed to fix my problem (http://stackoverflow.com/questions/7885962/android-utf-8-file

Is there a way to build a StAX filter chain?

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Making custom transformations for different event types with StAX using EventFilter and StreamFilter I feel being forced into a procedural implementation - extract these events and process them, filter those events and process them, than put all the results back together and return. SAX seems to have a really nice feature there - chainable filters based on XMLFilters . I would prefer to keep my implementation StAX-based, but to somehow incorporate or emulate the chainable filters from SAX. Can this be done with a reasonable effort and how? Is there an implementation already that I have missed?