java导出Excel通用方法的实例详解

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;
/***
 * @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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