java代码编写将excel数据导入到mysql数据库和数据库数据导出到excel

package com.javen.excel; import java.io.File; import java.io.FileInputStream; import java.io.InputStream; import java.sql.Date; import jxl.Cell; import jxl.CellType; import jxl.DateCell; import jxl.LabelCell; import jxl.NumberCell; import jxl.Sheet; import jxl.Workbook; import jxl.write.Label; /** * @author Javen * @Email zyw205@gmail.com * */ public class TestExcel { public static void main(String[] args) throws Exception { InputStream is=new FileInputStream("c:/book.xls"); Workbook rwb=Workbook.getWorkbook(is); //获得工作薄（Workbook）中工作表（Sheet）的个数，示例： int sheets = rwb.getNumberOfSheets(); //获取第一张Sheet表 Sheet rs = rwb.getSheet(0); String sheetName = rs.getName(); System.out.println(sheets+" "+sheetName); //获取第二行，第二列的值 Cell c11 = rs.getCell(1, 1);//第一个是列数，第二个是行数 String strc11 = c11.getContents(); //获取第四行，第二列的值 Cell c13 = rs.getCell(1, 3); String strc13 = c13.getContents(); //第三列 二行 Cell c21= rs.getCell(2, 1); String strc21 = c21.getContents(); System.out.println("Cell(1, 1)"+ " value : " + strc11 + "; type : " + c11.getType()); System.out.println("Cell(1, 3)"+ " value : " + strc13 + "; type : " + c13.getType()); System.out.println("Cell(2, 1)"+ " value : " + strc21 + "; type : " + c21.getType()); int clos=rs.getColumns();//得到所有的列 int rows=rs.getRows();//得到所有的行 System.out.println(clos+" rows:"+rows); for (int i = 0; i < rows; i++) { for (int j = 0; j < clos; j++) { Cell[] cells=rs.getRow(i); String value=cells[j].getContents(); System.out.print(value+"\t"); } System.out.println(); } String strcc00 = null; double strcc10 = 0.00; Date strcc11 = null; Cell cc00 = ((jxl.Sheet) rs).getCell(0, 0); Cell cc10 = ((jxl.Sheet) rs).getCell(1, 0); Cell cc11 = ((jxl.Sheet) rs).getCell(1, 1); if(cc00.getType() == CellType.LABEL) { LabelCell labelc00 = (LabelCell)cc00; strcc00 = labelc00.getString(); } if(cc10.getType() == CellType.NUMBER) { NumberCell numc10 = (NumberCell)cc10; strcc10 = numc10.getValue(); } if(c11.getType() == CellType.DATE) { DateCell datec11 = (DateCell)cc11; strcc11 = (Date) datec11.getDate(); } System.out.println("Cell(0, 0)" + " value : " + strcc00 + "; type : " + cc00.getType()); System.out.println("Cell(1, 0)" + " value : " + strcc10 + "; type : " + cc10.getType()); System.out.println("Cell(1, 1)" + " value : " + strcc11 + "; type : " + cc11.getType()); //利用已经创建的Excel工作薄创建新的可写入的Excel工作薄 jxl.write.WritableWorkbook wwb = Workbook.createWorkbook(new File("C:/Book.xls"),rwb); //读取第一张工作表 jxl.write.WritableSheet ws = wwb.getSheet(0); //获取第一个单元格对象 jxl.write.WritableCell wc = ws.getWritableCell(0, 0); //决断单元格的类型，做出相应的转化 if(wc.getType() == CellType.LABEL) { Label l = (Label) wc; l.setString("The value has been modified."); } //写入Excel对象 wwb.write(); wwb.close(); } }