java导出Excel通用方法，只需要一个list 集合。通用方法改进之处踊跃提出

package oa.common.utils; import java.io.OutputStream; import java.util.List; import javax.servlet.http.HttpServletResponse; import org.apache.struts2.ServletActionContext; 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; /*** * @author lsf */ public class ExportExcel { /*************************************************************************** * @param fileName EXCEL文件名称 * @param listTitle EXCEL文件第一行列标题集合 * @param listContent EXCEL文件正文数据集合 * @return */ public final static String exportExcel(String fileName,String[] Title, List<Object> listContent) { String result="系统提示：Excel文件导出成功！"; // 以下开始输出到EXCEL try { //定义输出流，以便打开保存对话框______________________begin HttpServletResponse response=ServletActionContext.getResponse(); OutputStream os = response.getOutputStream();// 取得输出流 response.reset();// 清空输出流 response.setHeader("Content-disposition", "attachment; filename="+ new String(fileName.getBytes("GB2312"),"ISO8859-1")); // 设定输出文件头 response.setContentType("application/msexcel");// 定义输出类型 //定义输出流，以便打开保存对话框_______________________end /** **********创建工作簿************ */ WritableWorkbook workbook = Workbook.createWorkbook(os); /** **********创建工作表************ */ WritableSheet sheet = workbook.createSheet("Sheet1", 0); /** **********设置纵横打印（默认为纵打）、打印纸***************** */ jxl.SheetSettings sheetset = sheet.getSettings(); sheetset.setProtected(false); /** ************设置单元格字体************** */ WritableFont NormalFont = new WritableFont(WritableFont.ARIAL, 10); WritableFont BoldFont = new WritableFont(WritableFont.ARIAL, 10,WritableFont.BOLD); /** ************以下设置三种单元格样式，灵活备用************ */ // 用于标题居中 WritableCellFormat wcf_center = new WritableCellFormat(BoldFont); wcf_center.setBorder(Border.ALL, BorderLineStyle.THIN); // 线条 wcf_center.setVerticalAlignment(VerticalAlignment.CENTRE); // 文字垂直对齐 wcf_center.setAlignment(Alignment.CENTRE); // 文字水平对齐 wcf_center.setWrap(false); // 文字是否换行 // 用于正文居左 WritableCellFormat wcf_left = new WritableCellFormat(NormalFont); wcf_left.setBorder(Border.NONE, BorderLineStyle.THIN); // 线条 wcf_left.setVerticalAlignment(VerticalAlignment.CENTRE); // 文字垂直对齐 wcf_left.setAlignment(Alignment.LEFT); // 文字水平对齐 wcf_left.setWrap(false); // 文字是否换行 /** ***************以下是EXCEL开头大标题，暂时省略********************* */ //sheet.mergeCells(0, 0, colWidth, 0); //sheet.addCell(new Label(0, 0, "XX报表", wcf_center)); /** ***************以下是EXCEL第一行列标题********************* */ for (int i = 0; i < Title.length; i++) { sheet.addCell(new Label(i, 0,Title[i],wcf_center)); } /** ***************以下是EXCEL正文数据********************* */ 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_left)); j++; } i++; } /** **********将以上缓存中的内容写到EXCEL文件中******** */ workbook.write(); /** *********关闭文件************* */ workbook.close(); } catch (Exception e) { result="系统提示：Excel文件导出失败，原因："+ e.toString(); System.out.println(result); e.printStackTrace(); } return result; } }
测试：

/** * 导出excel * @return */ public String excelPage(){ ExportExcel excel=new ExportExcel(); String str=""; try { str = new String(getHTTP.getRequest().getParameter("wineOrg.orgName").getBytes("iso8859-1"),"UTF-8"); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } wineOrg.setOrgName(str); List<Object> li=service.exportExcel(wineOrg); String[] Title={"机构ID","会员编号","类别","名称","省ID","省名称","城市ID","城市名称","详细地址","联系人","性别","联系手机","联系电话","传真","邮箱","QQ","生日","积分","客户等级","现金账户余额","结算方式","客户类型","购买次数","购买支数","创建人ID","创建人姓名","create_time","del","STS","备注","负责人ID","负责人姓名","审核标识","审核人ID ","审核人姓名","审核日期","分配人ID","分配人姓名","分配日期","修改人ID","修改人姓名 ","修改时间"}; excel.exportExcel("客户资料信息.xls",Title, li); return SUCCESS; }

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