textextractor.java

随书的代码

import org.xml.sax.*;
import java.io.*;


public class TextExtractor implements ContentHandler {

  private Writer out;
  
  public TextExtractor(Writer out) {
    this.out = out;   
  }
    
  public void characters(char[] text, int start, int length)
   throws SAXException {
     
    try {
      out.write(text, start, length); 
    }
    catch (IOException e) {
      throw new SAXException(e);   
    }
    
  }  
    
  // do-nothing methods
  public void setDocumentLocator(Locator locator) {}
  public void startDocument() {}
  public void endDocument() {}
  public void startPrefixMapping(String prefix, String uri) {}
  public void endPrefixMapping(String prefix) {}
  public void startElement(String namespaceURI, String localName,
   String qualifiedName, Attributes atts) {}
  public void endElement(String namespaceURI, String localName,
   String qualifiedName) {}
  public void ignorableWhitespace(char[] text, int start, 
   int length) throws SAXException {}
  public void processingInstruction(String target, String data){}
  public void skippedEntity(String name) {}

} // end TextExtractor