如何使用java导出Excel文件

如何使用java导出excel文件？很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。

java导出Excel通用方法的实例详解

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;  public class ExportExcel {    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       WritableWorkbook workbook = Workbook.createWorkbook(os);        WritableSheet sheet = workbook.createSheet("Sheet1", 0);       jxl.SheetSettings sheetset = sheet.getSettings();   sheetset.setProtected(false);        WritableFont NormalFont = new WritableFont(WritableFont.ARIAL, 10);   WritableFont BoldFont = new WritableFont(WritableFont.ARIAL, 10,WritableFont.BOLD);       // 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           //sheet.mergeCells(0, 0, colWidth, 0);   //sheet.addCell(new Label(0, 0, "XX报表", wcf_center));      for (int i = 0; i < Title.length; i++) {   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_left));       j++;     }     i++;   }      workbook.write();      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：

 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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