虽然将jxl.jar包添加到工程里了， 但是仍让有java.lang.ClassNotFoundException: jxl.write.WritableCell错误。
需要把jar包放在web-inf/lib目录下再加载才可以解决这个问题。
package tony.servlet.example;
import java.io.IOException;
import java.io.OutputStream;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import jxl.Workbook;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
public class Hello extends HttpServlet {
protected void service(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
// ServletOutputStream out = response.getOutputStream();
// PrintWriter out = response.getWriter();
// out.println("Hello world!");
// System.out.println("TEST");
// request.getRequestDispatcher("/WEB-INF/jspfooder/test1.html").forward(request,
// response);
// request.getRequestDispatcher("test.jsp").forward(request, response);
// request.getRequestDispatcher("/WEB-INF/test.jsp").forward(request,
// response);
/*
* response.setContentType("application/vnd.ms-excel");
* response.setHeader("Content-disposition","filename="+ "Example.xls"
* ); HSSFWorkbook demoWorkBook = new HSSFWorkbook(); HSSFSheet sheet =
* demoWorkBook.createSheet("账号详单"); HSSFRow row = sheet.createRow(0);
* HSSFCell cell = row.createCell(0); cell.setCellValue(11);
* ServletOutputStream out = response.getOutputStream();
* demoWorkBook.write(out); out.flush(); out.close();
*/
OutputStream out = response.getOutputStream();
try {
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-Disposition",
"attachment; filename=example.xls");
WritableWorkbook w = Workbook.createWorkbook(out);
WritableSheet s = w.createSheet("sheet1", 0);
s.addCell(new Label(0, 0,
"this is my first servlet & sheet example."));
w.write();
w.close();
} catch (Exception e) {
throw new ServletException("Exception in Excel Sample Servlet", e);
} finally {
if (out != null)
out.close();
}
}
}