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  1. PO
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    <p>Fastest solution is by far a StAX parser, specially as you only need a specific subset of the XML file and you can easily ignore whatever isn't really necessary using StAX, while you would receive the event anyway if you were using a SAX parser.</p> <p>But it's also a little bit more complicated than using SAX or DOM. One of these days I had to write a StAX parser for the following XML:</p> <pre><code>&lt;?xml version="1.0"?&gt; &lt;table&gt; &lt;row&gt; &lt;column&gt;1&lt;/column&gt; &lt;column&gt;Nome&lt;/column&gt; &lt;column&gt;Sobrenome&lt;/column&gt; &lt;column&gt;email@gmail.com&lt;/column&gt; &lt;column&gt;&lt;/column&gt; &lt;column&gt;2011-06-22 03:02:14.915&lt;/column&gt; &lt;column&gt;2011-06-22 03:02:25.953&lt;/column&gt; &lt;column&gt;&lt;/column&gt; &lt;column&gt;&lt;/column&gt; &lt;/row&gt; &lt;/table&gt; </code></pre> <p>Here's how the final parser code looks like:</p> <pre><code>public class Parser { private String[] files ; public Parser(String ... files) { this.files = files; } private List&lt;Inscrito&gt; process() { List&lt;Inscrito&gt; inscritos = new ArrayList&lt;Inscrito&gt;(); for ( String file : files ) { XMLInputFactory factory = XMLInputFactory.newFactory(); try { String content = StringEscapeUtils.unescapeXml( FileUtils.readFileToString( new File(file) ) ); XMLStreamReader parser = factory.createXMLStreamReader( new ByteArrayInputStream( content.getBytes() ) ); String currentTag = null; int columnCount = 0; Inscrito inscrito = null; while ( parser.hasNext() ) { int currentEvent = parser.next(); switch ( currentEvent ) { case XMLStreamReader.START_ELEMENT: currentTag = parser.getLocalName(); if ( "row".equals( currentTag ) ) { columnCount = 0; inscrito = new Inscrito(); } break; case XMLStreamReader.END_ELEMENT: currentTag = parser.getLocalName(); if ( "row".equals( currentTag ) ) { inscritos.add( inscrito ); } if ( "column".equals( currentTag ) ) { columnCount++; } break; case XMLStreamReader.CHARACTERS: if ( "column".equals( currentTag ) ) { String text = parser.getText().trim().replaceAll( "\n" , " "); switch( columnCount ) { case 0: inscrito.setId( Integer.valueOf( text ) ); break; case 1: inscrito.setFirstName( WordUtils.capitalizeFully( text ) ); break; case 2: inscrito.setLastName( WordUtils.capitalizeFully( text ) ); break; case 3: inscrito.setEmail( text ); break; } } break; } } parser.close(); } catch (Exception e) { throw new IllegalStateException(e); } } Collections.sort(inscritos); return inscritos; } public Map&lt;String,List&lt;Inscrito&gt;&gt; parse() { List&lt;Inscrito&gt; inscritos = this.process(); Map&lt;String,List&lt;Inscrito&gt;&gt; resultado = new LinkedHashMap&lt;String, List&lt;Inscrito&gt;&gt;(); for ( Inscrito i : inscritos ) { List&lt;Inscrito&gt; lista = resultado.get( i.getInicial() ); if ( lista == null ) { lista = new ArrayList&lt;Inscrito&gt;(); resultado.put( i.getInicial(), lista ); } lista.add( i ); } return resultado; } } </code></pre> <p>The code itself is in portuguese but it should be straightforward for you to understand what it is, <a href="https://github.com/mauricio/pbjug-inscricoes">here's the repo on github</a>.</p>
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    1. POWhich XML parser to use here?
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    1. USMaurício Linhares
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    1. POWhich XML parser to use here?
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      1. This table or related slice is empty.
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      1. This table or related slice is empty.
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    1. CO`StringEscapeUtils.unescapeXml` - now what does THAT do?
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      1. USThorbjørn Ravn Andersen
    2. COFor some reason my parser implementation was not correctly unescaping XML entities correctly, so I had to **hack** this solution, if you don't have the same issue, just ignore this line and feed a FileInputStream to the XMLInputFactory createXMLStreamReader call.
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      1. USMaurício Linhares
    3. COI am thinking for the same, but I see a far more usage of JAXB...why shouldnt I use JAXB here ?
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      1. USzombie
 

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