XPP3 即 MXP1--一个非常快的XML解析器

alfresco用到了大量的第三方的工具或者项目。本文列举并介绍这些项目和工具，以便在使用和分析alfresco的时候能够有一些帮助。

1、XPP3 也叫 MXP1

XPP —— XML Pull Parser，XPP3是一个非常快的XML解析器，是第三版的XPP。XPP2是XPP的第二版。XPP3是XPP2的继承者，实现了 http://www.xmlpull.org 定义的 XmlPull API 。XPP3只能用于解析XML，不支持节点树的增加操作。看到有人做的对比测试，XPP3 比 DOM4J 快6倍，也就是使用了1/6时间。
XPP3使用的是 Apache 1.1 variant License 协议。
http://www.extreme.indiana.edu/xgws/xsoap/xpp/

http://www.extreme.indiana.edu/xgws/xsoap/xpp/mxp1/index.html

http://mvnrepository.com/artifact/xpp3/xpp3

http://www.xmlpull.org/

使用举例：http://www.xmlpull.org/v1/download/unpacked/doc/quick_intro.html

MyXmlPull.java

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import java.io.FileReader;import java.io.IOException;import java.io.StringReader;import org.xmlpull.v1.XmlPullParser;import org.xmlpull.v1.XmlPullParserException;import org.xmlpull.v1.XmlPullParserFactory;/** * An example of an application that uses XMLPULL V1 API. * * @author <a href="http://www.extreme.indiana.edu/~aslom/">Aleksander Slominski</a> */public class MyXmlPullApp{ public final static String SAMPLE_XML = "<?xml version=\"1.0\"?>\n"+ "\n"+ "<poem xmlns=\"http://www.megginson.com/ns/exp/poetry\">\n"+ "<title>Roses are Red</title>\n"+ "<l>Roses are red,</l>\n"+ "<l>Violets are blue;</l>\n"+ "<l>Sugar is sweet,</l>\n"+ "<l>And I love you.</l>\n"+ "</poem>"; public static void main (String args[]) throws XmlPullParserException, IOException { XmlPullParserFactory factory = XmlPullParserFactory.newInstance(); factory.setNamespaceAware(true); XmlPullParser xpp = factory.newPullParser(); System.out.println("parser implementation class is "+xpp.getClass()); MyXmlPullApp app = new MyXmlPullApp(); if(args.length == 0) { System.out.println("Parsing simple sample XML");//:\n"+ SAMPLE_XML); xpp.setInput( new StringReader( SAMPLE_XML ) ); app.processDocument(xpp); } else { for (int i = 0; i < args.length; i++) { System.out.println("Parsing file: "+args[i]); xpp.setInput ( new FileReader ( args [i] ) ); app.processDocument(xpp); } } } public void processDocument(XmlPullParser xpp) throws XmlPullParserException, IOException { int eventType = xpp.getEventType(); do { if(eventType == xpp.START_DOCUMENT) { System.out.println("Start document"); } else if(eventType == xpp.END_DOCUMENT) { System.out.println("End document"); } else if(eventType == xpp.START_TAG) { processStartElement(xpp); } else if(eventType == xpp.END_TAG) { processEndElement(xpp); } else if(eventType == xpp.TEXT) { processText(xpp); } eventType = xpp.next(); } while (eventType != xpp.END_DOCUMENT); } public void processStartElement (XmlPullParser xpp) { String name = xpp.getName(); String uri = xpp.getNamespace(); if ("".equals (uri)) { System.out.println("Start element: " + name); } else { System.out.println("Start element: {" + uri + "}" + name); } } public void processEndElement (XmlPullParser xpp) { String name = xpp.getName(); String uri = xpp.getNamespace(); if ("".equals (uri)) System.out.println("End element: " + name); else System.out.println("End element: {" + uri + "}" + name); } int holderForStartAndLength[] = new int[2]; public void processText (XmlPullParser xpp) throws XmlPullParserException { char ch[] = xpp.getTextCharacters(holderForStartAndLength); int start = holderForStartAndLength[0]; int length = holderForStartAndLength[1]; System.out.print("Characters: \""); for (int i = start; i < start + length; i++) { switch (ch[i]) { case '\\': System.out.print("\\\\"); break; case '"': System.out.print("\\\""); break; case '\n': System.out.print("\\n"); break; case '\r': System.out.print("\\r"); break; case '\t': System.out.print("\\t"); break; default: System.out.print(ch[i]); break; } } System.out.print("\"\n"); }}

java源文件下载地址： http://download.csdn.net/detail/teamlet/4399658