sax解析xml文件

sax解析也会内存溢出？猜测可能还是程序写的有bug，即使层级很多，单个节点很大，也不至于导致内存溢出吧。

不是啊，我自己写了一个小的测试程序，这是源代码：package com.xml.test;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;public class SaxHandler extends DefaultHandler {

@Override
   public void startDocument() throws SAXException {
System.out.println("…………开始解析文档…………\n");
//         super.startDocument();
    }

   @Override
    public void endDocument() throws SAXException {
     System.out.println("\n…………结束解析文档…………");

//          super.endDocument();
    }

    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
     System.out.println("开始解析元素 " + qName);

//         super.startElement(uri, localName, qName, attributes);
    }

    @Override
    public void endElement(String uri, String localName, String qName) throws SAXException {
     System.out.println("结束解析元素  " + qName);

//          super.endElement(uri, localName, qName);
    }

    @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
     String content = new String(ch, start, length);

//          super.characters(ch, start, length);
    }
}public class XmlTest { public static void main(String[] args) throws Exception{
//实例化SAXParserFactory对象
SAXParserFactory factory = SAXParserFactory.newInstance();
System.setProperty("entityExpansionLimit", "1000000");
//创建解析器
SAXParser parser = factory.newSAXParser();
SaxHandler dh = new SaxHandler();
FileInputStream file = new FileInputStream("dblp.xml");
BufferedInputStream bis = new BufferedInputStream(file,1024);
InputSource is = new InputSource(bis);
parser.parse(is, dh);
}}这是执行结果时候报的错：Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
at com.sun.org.apache.xerces.internal.util.XMLStringBuffer.append(XMLStringBuffer.java:205)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.refresh(XMLDocumentScannerImpl.java:1520)
at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.invokeListeners(XMLEntityScanner.java:2070)
at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.arrangeCapacity(XMLEntityScanner.java:1610)
at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.skipString(XMLEntityScanner.java:1657)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1740)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2930)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:395)
at com.xml.test.XmlTest.main(XmlTest.java:25)
我在源代码中什么操作都没加，但是还是会内存溢出啊！

看看xml文件中是否存在内容特别长的属性值。

我的那个xml文件里面有啊，这个有什么联系么？

如果有可能就是这个产生的异常，这个我也没有解决办法，好像sax对这种数据处理有问题。

调试易

sax解析xml文件

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