首先先在自己工程中导入jxl的jar包；
疯狂google后找到一段别人的导出excel方法，先备份于下面：
import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.util.Vector;
import jxl.Cell; import jxl.Sheet; import jxl.Workbook; import jxl.format.Alignment; import jxl.format.Colour; import jxl.format.UnderlineStyle; import jxl.format.VerticalAlignment; import jxl.write.Label; import jxl.write.WritableCellFormat; import jxl.write.WritableFont; import jxl.write.WritableSheet; import jxl.write.WritableWorkbook; import jxl.write.WriteException; import jxl.write.biff.RowsExceededException;
public class ExportData {
/** *//** * 导出数据为XLS格式 * @param fileName 文件的名称，可以设为绝对路径，也可以设为相对路径 * @param content 数据的内容 */ public static void exportExcel(String fileName, Vector<Person> content) { WritableWorkbook wwb; FileOutputStream fos; try { fos = new FileOutputStream(fileName); wwb = Workbook.createWorkbook(fos); WritableSheet ws = wwb.createSheet("三国志武将列表", 10); // 创建一个工作表
// 设置单元格的文字格式 WritableFont wf = new WritableFont(WritableFont.ARIAL,12,WritableFont.NO_BOLD,false, UnderlineStyle.NO_UNDERLINE,Colour.BLUE); WritableCellFormat wcf = new WritableCellFormat(wf); wcf.setVerticalAlignment(VerticalAlignment.CENTRE); wcf.setAlignment(Alignment.CENTRE); ws.setRowView(1, 500);
// 填充数据的内容 Person[] p = new Person[content.size()]; for (int i = 0; i < content.size(); i++){ p[i] = (Person)content.get(i); ws.addCell(new Label(1, i + 1, p[i].getName(), wcf)); ws.addCell(new Label(2, i + 1, p[i].getNickname(), wcf)); ws.addCell(new Label(3, i + 1, p[i].getPower(), wcf)); ws.addCell(new Label(4, i + 1, p[i].getWit(), wcf)); ws.addCell(new Label(5, i + 1, p[i].getPolity(), wcf)); ws.addCell(new Label(6, i + 1, p[i].getCharm(), wcf)); ws.addCell(new Label(7, i + 1, p[i].getStory(), wcf)); if(i == 0) wcf = new WritableCellFormat(); }
wwb.write(); wwb.close();
} catch (IOException e){ } catch (RowsExceededException e){ } catch (WriteException e){} }
/** *//** * 从Excel文件里读取数据保存到Vector里 * @param fileName Excel文件的名称 * @return Vector对象,里面包含从Excel文件里获取到的数据 */ public static Vector<Person> importExcel(String fileName){ Vector<Person> v = new Vector<Person>(); try { Workbook book = Workbook.getWorkbook(new File(fileName)); Sheet sheet = book.getSheet(0); // 获得第一个工作表对象 int rows = sheet.getRows(); for(int i = 0; i < rows; i++) { Cell [] cell = sheet.getRow(i); if(cell.length == 0) continue; Person p = new Person(); p.setName(sheet.getCell(1, i).getContents()); p.setNickname(sheet.getCell(2, i).getContents()); p.setPower(sheet.getCell(3, i).getContents()); p.setWit(sheet.getCell(4, i).getContents()); p.setPolity(sheet.getCell(5, i).getContents()); p.setCharm(sheet.getCell(6, i).getContents()); p.setStory(sheet.getCell(7, i).getContents()); v.add(p); }
book.close(); }catch(Exception e) {} return v; }
public static void main(String [] args){ String fileName = "C:\\test.xls"; String fileNameNew = "C:\\testNew.xls"; Person p0 = new Person("姓名","字","武力","智力","政治","魅力","英雄事迹"); Person p1 = new Person("赵云","子龙","98","84","83","87","单骑救主!!!"); Person p2 = new Person("马超","孟起","98","62","40","88","杀得曹操割须弃袍!!!"); Person p3 = new Person("诸葛亮","孔明","55","100","92","93","死后木偶退兵，锦囊杀魏延!!!");
Vector<Person> v = new Vector<Person>(); v.add(p0); v.add(p1); v.add(p2); v.add(p3); exportExcel(fileName, v); System.out.println("成功导出数据到Excel文件(" + fileName + ")了!!!"); // Vector<Person> vector = importExcel(fileName); // System.out.println("成功从Excel文件(" + fileName + ")导入数据!!!"); // // exportExcel(fileNameNew, vector); // System.out.println("成功将" + fileName + "里的数据手复制到" + fileNameNew + "中!!!"); } }
上面的方法很好，导出我试过了，很好用，但它只实现了自动生成了excel文件；但是我们项目要求的是：弹出保存/打开excel的对话框，然后直接打开或输入路径再保存；
import java.io.IOException; import java.io.OutputStream; import java.util.HashMap; import java.util.Vector;
import javax.servlet.http.HttpServletResponse;
import jxl.Workbook; import jxl.format.Alignment; import jxl.format.Colour; import jxl.format.UnderlineStyle; import jxl.format.VerticalAlignment; import jxl.write.Label; import jxl.write.WritableCellFormat; import jxl.write.WritableFont; import jxl.write.WritableSheet; import jxl.write.WritableWorkbook; import jxl.write.WriteException; import jxl.write.biff.RowsExceededException;
public class ExportExcel {
public static void exportExcel( Object objIn,Object objOut) { try { //取得response HttpServletResponse HashMap hmOut = (HashMap)objOut; HashMap hmIn = (HashMap)objIn; HttpServletResponse response=(HttpServletResponse)hmIn.get("response"); //设置table列名 String excelName =(String)hmIn.get("excelName"); String[] excelNameArray = excelName.split(","); //取得key String[] excelKeyArray = (String[])hmOut.get("excelKey"); OutputStream os = response.getOutputStream();// 取得输出流 response.reset();// 清空输出流
response.setHeader("Content-disposition", "attachment; filename="+new String("Book1".getBytes("GB2312"),"8859_1")+".xls");// 设定输出文件头 response.setContentType("application/msexcel");// 定义输出类型 WritableWorkbook wwb = Workbook.createWorkbook(os); // 建立excel文件 WritableSheet ws = wwb.createSheet("Sheet1", 10); // 创建一个工作表
// 设置单元格的文字格式 WritableFont wf = new WritableFont(WritableFont.ARIAL,10,WritableFont.NO_BOLD,false, UnderlineStyle.NO_UNDERLINE,Colour.BLUE); WritableCellFormat wcf = new WritableCellFormat(wf); wcf.setVerticalAlignment(VerticalAlignment.CENTRE); wcf.setAlignment(Alignment.CENTRE); ws.setRowView(0, 500);
// 填充数据的内容 int len=((String[])hmOut.get(excelKeyArray[0])).length; //设置列头名 for (int j=0;j<excelKeyArray.length;j++){ ws.addCell(new Label(j, 0, excelNameArray[j], wcf)); } //设置内容 wcf = new WritableCellFormat(); for (int i = 0; i <len; i++){ for (int j=0;j<excelKeyArray.length;j++){ ws.addCell(new Label(j, i+1, ((String[])hmOut.get(excelKeyArray[j]))[i], wcf)); } }
wwb.write(); wwb.close();
} catch (IOException e){ } catch (RowsExceededException e){ } catch (WriteException e){} }
}
注：现在弹出对话框，就是说要用io流的方式，io流就要从response中取；这里要导入tomcat里的一个jar：servlet.jar
转载于:https://www.cnblogs.com/forlina/archive/2011/06/15/2081153.html
