java简单解析xls文件的方法示例【读取和写入】

import java.io.*;
import jxl.*;
import jxl.write.*;
import jxl.format.*;
class Aa{
public static void main(String args[]) {
try{
Workbook workbook = null;
try {
  workbook = Workbook.getWorkbook(new File("d:\\a.xls"));
} catch (Exception e) {
  throw new Exception("file to import not found!");
}
Sheet sheet = workbook.getSheet(0);
Cell cell = null;
int columnCount=3;
int rowCount=sheet.getRows();
for (int i = 0; i <rowCount; i++) {
  for (int j = 0; j <columnCount; j++) {
    //注意，这里的两个参数，第一个是表示列的，第二才表示行
    cell=sheet.getCell(j, i);
    //要根据单元格的类型分别做处理，否则格式化过的内容可能会不正确
    if(cell.getType()==CellType.NUMBER){
      System.out.print(((NumberCell)cell).getValue());
    }
    else if(cell.getType()==CellType.DATE){
      System.out.print(((DateCell)cell).getDate());
    }
    else{
      System.out.print(cell.getContents());
    }
    //System.out.print(cell.getContents());
    System.out.print("\t");
  }
  System.out.print("\n");
}
//关闭它，否则会有内存泄露
workbook.close();
}catch(Exception e){
}
}
}

import java.io.*;
import jxl.*;
import jxl.write.*;
import jxl.format.*;
class Aa{
public static void main(String args[]) {
try{
File tempFile=new File("d:" + java.io.File.separator + "output00.xls");
System.out.println( "d:" + java.io.File.separator + "output00.xls" );
WritableWorkbook workbook = Workbook.createWorkbook(tempFile);
WritableSheet sheet = workbook.createSheet("TestCreateExcel", 0);
//一些临时变量，用于写到excel中
Label l=null;
jxl.write.Number n=null;
jxl.write.DateTime d=null;
//预定义的一些字体和格式，同一个Excel中最好不要有太多格式
WritableFont headerFont = new WritableFont(WritableFont.ARIAL, 12, WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE, jxl.format.Colour.BLUE);
WritableCellFormat headerFormat = new WritableCellFormat (headerFont);
WritableFont titleFont = new WritableFont(WritableFont.ARIAL, 10, WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE, jxl.format.Colour.RED);
WritableCellFormat titleFormat = new WritableCellFormat (titleFont);
WritableFont detFont = new WritableFont(WritableFont.ARIAL, 10, WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE, jxl.format.Colour.BLACK);
WritableCellFormat detFormat = new WritableCellFormat (detFont);
NumberFormat nf=new NumberFormat("0.00000"); //用于Number的格式
WritableCellFormat priceFormat = new WritableCellFormat (detFont, nf);
DateFormat df=new DateFormat("yyyy-MM-dd");//用于日期的
WritableCellFormat dateFormat = new WritableCellFormat (detFont, df);
//剩下的事情，就是用上面的内容和格式创建一些单元格，再加到sheet中
l=new Label(0, 0, "用于测试的Excel文件", headerFormat);
sheet.addCell(l);
//add Title
int column=0;
l=new Label(column++, 2, "标题", titleFormat);
sheet.addCell(l);
l=new Label(column++, 2, "日期", titleFormat);
sheet.addCell(l);
l=new Label(column++, 2, "货币", titleFormat);
sheet.addCell(l);
l=new Label(column++, 2, "价格", titleFormat);
sheet.addCell(l);
//add detail
int i=0;
column=0;
l=new Label(column++, i+3, "标题 "+i, detFormat);
sheet.addCell(l);
d=new DateTime(column++, i+3, new java.util.Date(), dateFormat);
sheet.addCell(d);
l=new Label(column++, i+3, "CNY", detFormat);
sheet.addCell(l);
n=new jxl.write.Number(column++, i+3, 5.678, priceFormat);
sheet.addCell(n);
i++;
column=0;
l=new Label(column++, i+3, "标题 "+i, detFormat);
sheet.addCell(l);
d=new DateTime(column++, i+3, new java.util.Date(), dateFormat);
sheet.addCell(d);
l=new Label(column++, i+3, "SGD", detFormat);
sheet.addCell(l);
n=new jxl.write.Number(column++, i+3, 98832, priceFormat);
sheet.addCell(n);
//设置列的宽度
column=0;
sheet.setColumnView(column++, 20);
sheet.setColumnView(column++, 20);
sheet.setColumnView(column++, 10);
sheet.setColumnView(column++, 20);
workbook.write();
workbook.close();
}catch(Exception e){
}
}
}