如何使用POI在Java中读取Excel（.xlsx）？

Question

我正在尝试在Java中阅读excel。我有以下代码。

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class Test {
    public static void main(String[] args) throws IOException {
        String fname = "D:\\Test.xlsx"; // or "C:\\Test.xls" C:\\SDI-XL.xls
        InputStream inp = new FileInputStream(fname);
        Workbook  wb = new XSSFWorkbook(inp); // Declare XSSF WorkBook
        Sheet sheet = wb.getSheetAt(0); // sheet can be used as common for XSSF and HSSF

        Iterator<Row> rows=sheet.rowIterator();
        while (rows.hasNext()) {
            Row row = (Row) rows.next();
            System.out.println("row#=" + row.getRowNum() + "");
            Iterator cells = row.cellIterator();
            while (cells.hasNext()) {
                Cell cell = (Cell) cells.next();

                switch (cell.getCellType()) {
                case Cell.CELL_TYPE_STRING:
                    System.out.println(cell.getRichStringCellValue().getString());
                    break;
                case Cell.CELL_TYPE_NUMERIC:
                    if (DateUtil.isCellDateFormatted(cell)) {
                        System.out.println(cell.getDateCellValue() + "");
                    } else {
                        System.out.println(cell.getNumericCellValue());
                    }
                    break;
                case Cell.CELL_TYPE_BOOLEAN:
                    System.out.println(cell.getBooleanCellValue() + "");
                    break;
                case Cell.CELL_TYPE_FORMULA:
                    System.out.println(cell.getCellFormula());
                    break;
                default:
                }
            }
        }
        inp.close();
    }
}

我导入了poi.3.6jar和poi.ooxml-3.6 jar。当我运行该程序时，出现以下错误消息。

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/xmlbeans/XmlException
    at Test.main(Test.java:16)
Caused by: java.lang.ClassNotFoundException: org.apache.xmlbeans.XmlException
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    ... 1 more

我不明白为什么会出现此错误消息。请帮助我。

Answer 1

将xmlbeans-2.3.0.jar文件添加到您的类路径。