导出CSV文件工具类

package com.kingdee.youshang.platform.bi.common.util;
import com.kingdee.youshang.platform.common.util.DateUtils;
import java.io.*;
import java.util.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;

public class ExportUtil{ 
  private static final Logger logger = Logger.getLogger(ExportUtil.class); 
  public static void exportCSV(String columnName[], List dataList, HttpServletRequest request, HttpServletResponse response) {
      String columns = getTableColumnName(columnName);
      String data = buildDataForCSV(columnName, dataList);
      String fileName = (String)request.getAttribute("fileName");
      if (fileName == null || "".equals(fileName))
            fileName = DateUtils.convertDateToStr(new Date(), "yyyy-MM-dd");
        response.setContentType("application/vnd.ms-excel");
        response.setHeader("Content-Disposition", 
                    (new StringBuilder()).append("attachment; filename=\"").append(fileName).append(".csv").append("\" ").toString());
        response.setHeader("Content-Transfer-Encoding", "binary");
        response.setHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
        response.setHeader("Pragma", "public");

        try
        {
            java.io.OutputStream fos = response.getOutputStream();
            OutputStreamWriter writer = new OutputStreamWriter(fos, "gbk");
            BufferedWriter bw = new BufferedWriter(writer);
            bw.write((new StringBuilder()).append(columns).append(data).toString());
            bw.newLine();
            bw.flush();
            bw.close();
        }
        catch (Exception e)
        {
            logger.error(e);
        }
   }

   public static void exportCSV(String headName, String dataStr, HttpServletRequest request, HttpServletResponse response) {
        String fileName = (String)request.getAttribute("fileName");
        if (fileName == null || "".equals(fileName))
            fileName = DateUtils.convertDateToStr(new Date(), "yyyy-MM-dd");
        response.setContentType("application/vnd.ms-excel");
        response.setHeader("Content-Disposition", 
                 (new StringBuilder()).append("attachment; filename=\"").append(fileName).append(".csv").append("\" ").toString());
        response.setHeader("Content-Transfer-Encoding", "binary");
        response.setHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
        response.setHeader("Pragma", "public");
        try
        {
            java.io.OutputStream fos = response.getOutputStream();
            OutputStreamWriter writer = new OutputStreamWriter(fos, "gbk");
            BufferedWriter bw = new BufferedWriter(writer);
            bw.write((new StringBuilder()).append(headName).append(dataStr).toString());
            bw.newLine();
            bw.flush();
            bw.close();
        }
        catch (Exception e)
        {
            logger.error(e);
        }
    }
 
    public static void saveDataCSV(String columnName[], List dataList, String csvFileName) {
        String columns = getTableColumnName(columnName);
        String data = buildDataForCSV(columnName, dataList);
        csvFileName = csvFileName.replace('/', File.separatorChar);
        File file = new File(csvFileName);
        try
        {
            FileOutputStream stream = new FileOutputStream(file);
            OutputStreamWriter writer = new OutputStreamWriter(stream, "gbk");
            BufferedWriter bw = new BufferedWriter(writer);
            bw.write((new StringBuilder()).append(columns).append(data).toString());
            bw.newLine();
            bw.flush();
            bw.close();
        }
        catch (Exception e)
        {
            logger.error(e);
        }
    }

    public static String getTableColumnName(String columnName[])
    {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < columnName.length; i++)
            if (i != columnName.length - 1)
                sb.append((new StringBuilder()).append("\"").append(columnName[i]).append("\",").toString());
            else
                sb.append((new StringBuilder()).append("\"").append(columnName[i]).append("\"").toString());

        sb.append("\n");
        return sb.toString();
    }


    private static String buildDataForCSV(String columnName[], List dataList) {
        StringBuilder strb = new StringBuilder();
        for (Iterator i$ = dataList.iterator(); i$.hasNext(); strb.append("\n"))
        {
            Map map = (Map)i$.next();
            for (int i = 0; i < columnName.length; i++)
                if (i != columnName.length - 1)
                    strb.append((new StringBuilder()).append("\"").append(map.get(columnName[i])).append("\",").toString());
                else
                    strb.append((new StringBuilder()).append("\"").append(map.get(columnName[i])).append("\"").toString());

        }

        return strb.toString();
    }
  }

-----------------------------------------调用--------------------------------------------------

	public ActionForward exportIncome(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response)
		throws Exception {
		fillqueryParamMap(request);
		Pager pager = incomeService.queryIncome(paramMap, 0, 0);
		List dataList = pager.getResult();
		String headNameArr[] = {"编号", "日期", "业务部门", "业务类型", "合作伙伴", "收入金额", "备注"};
		String headName = getTableHead(headNameArr);
		String dataStr = buildDataForIncome(dataList);
		ExportUtil.exportCSV(headName, dataStr, request, response);
		return null;
	}

       private String buildDataForIncome(List dataList){
        if (dataList == null || dataList.size() <= 0)
            return "";
        StringBuilder strb = new StringBuilder();
        for (Iterator i$ = dataList.iterator(); i$.hasNext(); strb.append("\n")) {
            IncomeDetailVO vo = (IncomeDetailVO)i$.next();
            strb.append((new StringBuilder()).append("\"").append(vo.getFsk()).append("\",").toString());
            strb.append((new StringBuilder()).append("\"").append(vo.getFdate()).append("\",").toString());
            strb.append((new StringBuilder()).append("\"").append(vo.getServiceDeptName()).append("\",").toString());
            strb.append((new StringBuilder()).append("\"").append(vo.getServiceType()).append("\",").toString());
            strb.append((new StringBuilder()).append("\"").append(vo.getPartnerName()).append("\",").toString());
            strb.append((new StringBuilder()).append("\"").append(vo.getMoney()).append("\",").toString());
            strb.append((new StringBuilder()).append("\"").append(vo.getRemark()).append("\"").toString());
        }

        return strb.toString();
    }