java导出数据库中Excel表格数据的方法

<dependency>   <groupId>net.sourceforge.jexcelapi</groupId>   <artifactId>jxl</artifactId>   <version>2.6.12</version> </dependency> 

package bp.util;import java.io.OutputStream;import java.util.List;import javax.servlet.http.HttpServletResponse;import java.lang.reflect.Field;import jxl.Workbook;import jxl.format.Alignment;import jxl.format.Border;import jxl.format.BorderLineStyle;import jxl.format.VerticalAlignment;import jxl.write.Label;import jxl.write.WritableCellFormat;import jxl.write.WritableFont;import jxl.write.WritableSheet;import jxl.write.WritableWorkbook;public class ExportExcel {  public final static String exportExcel(String fileName, String[] Title, List listContent,      HttpServletResponse response) {    String result = "Excel文件导出成功！";    try {      OutputStream os = response.getOutputStream();      response.reset();      response.setHeader("Content-disposition",          "attachment; filename=" + new String(fileName.getBytes("GB2312"), "ISO8859-1"));      response.setContentType("application/msexcel");      WritableWorkbook workbook = Workbook.createWorkbook(os);      WritableSheet sheet = workbook.createSheet("Sheet1", 0);      jxl.SheetSettings sheetset = sheet.getSettings();      sheetset.setProtected(false);      WritableFont BoldFont = new WritableFont(WritableFont.ARIAL, 10, WritableFont.BOLD);      WritableCellFormat wcf_center = new WritableCellFormat(BoldFont);      wcf_center.setBorder(Border.ALL, BorderLineStyle.THIN);      wcf_center.setVerticalAlignment(VerticalAlignment.CENTRE);      wcf_center.setAlignment(Alignment.CENTRE);      wcf_center.setWrap(true);      for (int i = 0; i < Title.length; i++) {        sheet.setColumnView(i, 20);        sheet.addCell(new Label(i, 0, Title[i], wcf_center));      }      Field[] fields = null;      int i = 1;      for (Object obj : listContent) {        fields = obj.getClass().getDeclaredFields();        int j = 0;        for (Field v : fields) {          v.setAccessible(true);          Object va = v.get(obj);          if (va == null) {            va = "";          }          sheet.addCell(new Label(j, i, va.toString(), wcf_center));          j++;        }        i++;      }      workbook.write();      workbook.close();    } catch (Exception e) {      result = "Excel文件导出失败";      e.printStackTrace();    }    return result;  }}