java 读excel xlsx

import java.io.File;

import java.io.IOException;

import java.io.InputStream;

import java.util.zip.ZipEntry;

import java.util.zip.ZipException;

import java.util.zip.ZipFile;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Element;

import org.w3c.dom.Document;

import org.w3c.dom.NodeList;

import org.xml.sax.SAXException;

public class test {

	/**

	 * @param args

	 */

	public static void main(String[] args) {

		// 解压Book1.xlsx

		ZipFile xlsxFile;

		try {

			xlsxFile = new ZipFile(new File("c:\\1.xlsx"));

			DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();

			// 先读取sharedStrings.xml这个文件备用

			ZipEntry sharedStringXML = xlsxFile.getEntry("xl/sharedStrings.xml");

			InputStream sharedStringXMLIS = xlsxFile

					.getInputStream(sharedStringXML);

			Document sharedString;

			sharedString = dbf.newDocumentBuilder().parse(sharedStringXMLIS);

			NodeList str = sharedString.getElementsByTagName("t");

			String sharedStrings[] = new String[str.getLength()];

			for (int n = 0; n < str.getLength(); n++) {

				Element element = (Element) str.item(n);

				sharedStrings[n] = element.getTextContent();

			}

			// 找到解压文件夹里的workbook.xml,此文件中包含了这张工作表中有几个sheet

			ZipEntry workbookXML = xlsxFile.getEntry("xl/workbook.xml");

			InputStream workbookXMLIS = xlsxFile.getInputStream(workbookXML);

			Document doc = dbf.newDocumentBuilder().parse(workbookXMLIS);

			// 获取一共有几个sheet

			NodeList nl = doc.getElementsByTagName("sheet");

			for (int i = 0; i < nl.getLength(); i++) {

				Element element = (Element) nl.item(i);// 将node转化为element，用来得到每个节点的属性

				System.out.println(element.getAttribute("name"));// 输出sheet节点的name属性的值

				// 接着就要到解压文件夹里找到对应的name值的xml文件，比如在workbook.xml中有<sheet name="Sheet1"

				// sheetId="1" r:id="rId1" /> 节点

				// 那么就可以在解压文件夹里的xl/worksheets下找到sheet1.xml,这个xml文件夹里就是包含的表格的内容

				ZipEntry sheetXML = xlsxFile.getEntry("xl/worksheets/"

						+ element.getAttribute("name").toLowerCase() + ".xml");

				InputStream sheetXMLIS = xlsxFile.getInputStream(sheetXML);

				Document sheetdoc = dbf.newDocumentBuilder().parse(sheetXMLIS);

				NodeList rowdata = sheetdoc.getElementsByTagName("row");

				for (int j = 0; j < rowdata.getLength(); j++) {

					// 得到每个行

					// 行的格式：

					/*

					 * <row r="1" spans="1:3">r表示第一行,spans表示有几列 <c r="A1"

					 * t="s">//r表示该列的列表

					 * ，t="s"个人认为是表示这个单元格的内容可以在sharedStrings.xml这个文件里找到，对应的节点

					 * 下标就是v节点的值，即0，若没有t属性，则v的值就是该单元格的内容 <v>0</v> </c> <c r="B1"

					 * t="s"> <v>1</v> </c> <c r="C1" t="s"> <v>2</v> </c> </row>

					 */

					Element row = (Element) rowdata.item(j);

					// 根据行得到每个行中的列

					NodeList columndata = row.getElementsByTagName("c");

					for (int k = 0; k < columndata.getLength(); k++) {

						Element column = (Element) columndata.item(k);

						NodeList values = column.getElementsByTagName("v");

						Element value = (Element) values.item(0);

						if (column.getAttribute("t") != null

								& column.getAttribute("t").equals("s")) {

							// 如果是共享字符串则在sharedstring.xml里查找该列的值

							System.out.print(sharedStrings[Integer.parseInt(value.getTextContent())] + " ");

						} else {

							if (value != null) {

								System.out.print(value.getTextContent() + " ");

							}else {

								System.out.println("j : " + j + "   k : " + k + "  null");

							}

						}

					}

					System.out.println();

				}

			}

		} catch (ZipException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		} catch (IOException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		} catch (SAXException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		} catch (ParserConfigurationException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}

	}

}