import org.apache.poi.xssf.eventusermodel.XSSFSheetXMLHandler.SheetContentsHandler; //导入依赖的package包/类
public void processSheet(SheetContentsHandler sheetContentsExtractor,
    StylesTable styles, ReadOnlySharedStringsTable strings,
    InputStream sheetInputStream) throws IOException, SAXException {
  InputSource sheetSource = new InputSource(sheetInputStream);
  SAXParserFactory saxFactory = SAXParserFactory.newInstance();
  try {
    SAXParser saxParser = saxFactory.newSAXParser();
    XMLReader sheetParser = saxParser.getXMLReader();
    XSSFSheetInterestingPartsCapturer handler = new XSSFSheetInterestingPartsCapturer(
        new XSSFSheetXMLHandler(styles, strings, sheetContentsExtractor,
            formatter, false));
    sheetParser.setContentHandler(handler);
    sheetParser.parse(sheetSource);
    sheetInputStream.close();

    if (handler.hasProtection) {
      metadata.set(TikaMetadataKeys.PROTECTED, "true");
    }
  } catch (ParserConfigurationException e) {
    throw new RuntimeException("SAX parser appears to be broken - "
        + e.getMessage());
  }
}
 

import org.apache.poi.xssf.eventusermodel.XSSFSheetXMLHandler.SheetContentsHandler; //导入依赖的package包/类
/**
 * Parses and shows the content of one sheet using the specified styles and
 * shared-strings tables.
 *
 * @param styles
 * @param strings
 * @param sheetInputStream
 */
public void processSheet(StylesTable styles, ReadOnlySharedStringsTable strings, SheetContentsHandler sheetHandler,
                         InputStream sheetInputStream) throws IOException, ParserConfigurationException, SAXException {
    DataFormatter formatter = new DataFormatter();
    InputSource sheetSource = new InputSource(sheetInputStream);
    try {
        XMLReader sheetParser = SAXHelper.newXMLReader();
        ContentHandler handler = new XSSFSheetXMLHandler(styles, null, strings, sheetHandler, formatter, false);
        sheetParser.setContentHandler(handler);
        sheetParser.parse(sheetSource);
    } catch (ParserConfigurationException e) {
        throw new RuntimeException("SAX parser appears to be broken - " + e.getMessage());
    }
}
 

import org.apache.poi.xssf.eventusermodel.XSSFSheetXMLHandler.SheetContentsHandler; //导入依赖的package包/类
/**
 * Parses and shows the content of one sheet using the specified styles and
 * shared-strings tables.
 *
 * @param styles
 * @param strings
 * @param sheetInputStream
 */
public void processSheet(StylesTable styles, ReadOnlySharedStringsTable strings, SheetContentsHandler sheetHandler,
		InputStream sheetInputStream) throws IOException, ParserConfigurationException, SAXException {
	DataFormatter formatter = new DataFormatter();
	InputSource sheetSource = new InputSource(sheetInputStream);
	try {
		XMLReader sheetParser = SAXHelper.newXMLReader();
		ContentHandler handler = new XSSFSheetXMLHandler(styles, null, strings, sheetHandler, formatter, false);
		sheetParser.setContentHandler(handler);
		sheetParser.parse(sheetSource);
	} catch (ParserConfigurationException e) {
		throw new RuntimeException("SAX parser appears to be broken - " + e.getMessage());
	}
}
 

import org.apache.poi.xssf.eventusermodel.XSSFSheetXMLHandler.SheetContentsHandler; //导入依赖的package包/类
private void parseSheet(StylesTable styles, ReadOnlySharedStringsTable sst, InputSource sheetSource, SheetContentsHandler handler) {
	try {
		createSheetParser( new XSSFSheetXMLHandler(styles, sst, handler, false)).parse(sheetSource);			
	} catch (Exception e) {
		throw new RuntimeException(e);
	}
}
 

import org.apache.poi.xssf.eventusermodel.XSSFSheetXMLHandler.SheetContentsHandler; //导入依赖的package包/类
/**
 * Constructor: Microsoft Excel File (XSLX) Reader
 * 
 * @param pkg a {@link OPCPackage} object - The package to process XLSX
 * @param sheetContentsHandler a {@link SheetContentsHandler} object - WorkSheet contents handler
 * @param sheetCallback a {@link ExcelSheetCallback} object - WorkSheet callback for sheet
 *        processing begin and end (can be null)
 */
public ExcelReader(OPCPackage pkg, SheetContentsHandler sheetContentsHandler,
    ExcelSheetCallback sheetCallback) {
  this.xlsxPackage = pkg;
  this.sheetContentsHandler = sheetContentsHandler;
  this.sheetCallback = sheetCallback;
}