使用poi库测试了一下读取excel文件，效果不错，跟大家分享一下。
第一列是数值型，第二列是字符型，代码如下：
1 package poi; 2 3 import java.io.FileInputStream; 4 import java.io.InputStream; 5 import java.util.Iterator; 6 7 import org.apache.poi.hssf.extractor.ExcelExtractor; 8 import org.apache.poi.hssf.usermodel.HSSFCell; 9 import org.apache.poi.hssf.usermodel.HSSFRow; 10 import org.apache.poi.hssf.usermodel.HSSFSheet; 11 import org.apache.poi.hssf.usermodel.HSSFWorkbook; 12 import org.apache.poi.poifs.filesystem.POIFSFileSystem; 13 import org.apache.poi.ss.usermodel.Cell; 14 import org.apache.poi.ss.usermodel.Row; 15 16 /** 17 * 测试poi读取excel文件内容 18 * @author lihui 19 * 20 */ 21 public class TestRead { 22 23 /** 24 * @param args 25 */ 26 public static void main(String[] args){ 27 28 HSSFWorkbook wb = null; 29 POIFSFileSystem fs = null; 30 try { 31 //设置要读取的文件路径 32 fs = new POIFSFileSystem(new FileInputStream("d:\book1.xls")); 33 //HSSFWorkbook相当于一个excel文件，HSSFWorkbook是解析excel2007之前的版本（xls） 34 //之后版本使用XSSFWorkbook（xlsx） 35 wb = new HSSFWorkbook(fs); 36 //获得sheet工作簿 37 HSSFSheet sheet = wb.getSheetAt(0); 38 //获得行 39 HSSFRow row = sheet.getRow(3); 40 //获得行中的列，即单元格 41 HSSFCell cell = row.getCell(0); 42 //获得单元格中的值，这里该单元格的值为数字，所以使用getNumericCellValue，如为字符串则会报错 43 //如何取别的值，见print2方法 44 double msg = cell.getNumericCellValue(); 45 System.out.println(msg); 46 print1(); 47 print2(); 48 } catch (Exception e) { 49 e.printStackTrace(); 50 } 51 } 52 53 public static void print1() throws Exception { 54 InputStream is = new FileInputStream("d:\book1.xls"); 55 HSSFWorkbook wb = new HSSFWorkbook(new POIFSFileSystem(is)); 56 //A text extractor for Excel files. 57 //Returns the textual content of the file, suitable for indexing by something like Lucene, 58 //but not really intended for display to the user. 59 //用来获得整个excel文件的内容，表示为字符串 60 ExcelExtractor extractor = new ExcelExtractor(wb); 61 //字符串所包含的类型，详见api 62 extractor.setIncludeSheetNames(true); 63 extractor.setFormulasNotResults(false); 64 extractor.setIncludeCellComments(true); 65 //获得字符串形式 66 String text = extractor.getText(); 67 System.out.println(text); 68 } 69 70 public static void print2() throws Exception { 71 HSSFWorkbook wb = new HSSFWorkbook(new FileInputStream( 72 "d:\book1.xls")); 73 HSSFSheet sheet = wb.getSheetAt(0); 74 //迭代行 75 for (Iterator<Row> iter = (Iterator<Row>) sheet.rowIterator(); iter 76 .hasNext();) { 77 Row row = iter.next(); 78 //迭代列 79 for (Iterator<Cell> iter2 = (Iterator<Cell>) row.cellIterator(); iter2 80 .hasNext();) { 81 Cell cell = iter2.next(); 82 //用于测试的文件就2列，第一列为数字，第二列为字符串 83 //对于数字cell.getCellType的值为HSSFCell.CELL_TYPE_NUMERIC，为0 84 //对于字符串cell.getCellType的值为HSSFCell.CELL_TYPE_STRING，为1 85 //完整的类型列表请查看api 86 String content = cell.getCellType()==HSSFCell.CELL_TYPE_NUMERIC?cell.getNumericCellValue()+"":cell.getStringCellValue(); 87 System.out.println(content); 88 } 89 } 90 } 91 92 }
下面是创建一个excel文件
1 package poi; 2 3 import java.io.FileOutputStream; 4 import java.util.Date; 5 6 import org.apache.poi.hssf.usermodel.HSSFCell; 7 import org.apache.poi.hssf.usermodel.HSSFCellStyle; 8 import org.apache.poi.hssf.usermodel.HSSFDataFormat; 9 import org.apache.poi.hssf.usermodel.HSSFFont; 10 import org.apache.poi.hssf.usermodel.HSSFHyperlink; 11 import org.apache.poi.hssf.usermodel.HSSFRow; 12 import org.apache.poi.hssf.usermodel.HSSFSheet; 13 import org.apache.poi.hssf.usermodel.HSSFWorkbook; 14 import org.apache.poi.hssf.util.CellRangeAddress; 15 import org.apache.poi.hssf.util.HSSFColor; 16 17 public class TestWrite { 18 19 /** 20 * @param args 21 */ 22 public static void main(String[] args) throws Exception { 23 // 创建Excel的工作书册 Workbook,对应到一个excel文档 24 HSSFWorkbook wb = new HSSFWorkbook(); 25 26 // 创建Excel的工作sheet,对应到一个excel文档的tab 27 HSSFSheet sheet = wb.createSheet("sheet1"); 28 29 // 设置excel每列宽度 30 sheet.setColumnWidth(0, 4000); 31 sheet.setColumnWidth(1, 3500); 32 33 // 创建字体样式 34 HSSFFont font = wb.createFont(); 35 font.setFontName("Verdana"); 36 font.setBoldweight((short) 100); 37 font.setFontHeight((short) 300); 38 font.setColor(HSSFColor.BLUE.index); 39 40 // 创建单元格样式 41 HSSFCellStyle style = wb.createCellStyle(); 42 style.setAlignment(HSSFCellStyle.ALIGN_CENTER); 43 style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); 44 style.setFillForegroundColor(HSSFColor.LIGHT_TURQUOISE.index); 45 style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); 46 47 // 设置边框 48 style.setBottomBorderColor(HSSFColor.RED.index); 49 style.setBorderBottom(HSSFCellStyle.BORDER_THIN); 50 style.setBorderLeft(HSSFCellStyle.BORDER_THIN); 51 style.setBorderRight(HSSFCellStyle.BORDER_THIN); 52 style.setBorderTop(HSSFCellStyle.BORDER_THIN); 53 54 style.setFont(font);// 设置字体 55 56 // 创建Excel的sheet的一行 57 HSSFRow row = sheet.createRow(0); 58 row.setHeight((short) 500);// 设定行的高度 59 // 创建一个Excel的单元格 60 HSSFCell cell = row.createCell(0); 61 62 // 合并单元格(startRow，endRow，startColumn，endColumn) 63 sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, 2)); 64 65 // 给Excel的单元格设置样式和赋值 66 cell.setCellStyle(style); 67 cell.setCellValue("hello world"); 68 69 // 设置单元格内容格式 70 HSSFCellStyle style1 = wb.createCellStyle(); 71 style1.setDataFormat(HSSFDataFormat.getBuiltinFormat("h:mm:ss")); 72 73 style1.setWrapText(true);// 自动换行 74 75 row = sheet.createRow(1); 76 77 // 设置单元格的样式格式 78 79 cell = row.createCell(0); 80 cell.setCellStyle(style1); 81 cell.setCellValue(new Date()); 82 83 // 创建超链接 84 HSSFHyperlink link = new HSSFHyperlink(HSSFHyperlink.LINK_URL); 85 link.setAddress("http://www.baidu.com"); 86 cell = row.createCell(1); 87 cell.setCellValue("百度"); 88 cell.setHyperlink(link);// 设定单元格的链接 89 90 FileOutputStream os = new FileOutputStream("e:\workbook.xls"); 91 wb.write(os); 92 os.close(); 93 94 } 95 96 }