//导出项目信息

        function exportXmxx(){

            //判断是否选择站址

            var index = $("#dgObj").datagrid('getChecked');

            if(index.length == ){

                alert('请选择您要导出的信息！');

                return;

            }

            var sheetId = "";

            if(!selectAllPageFlag){//是否全选

                   for (var i = ; i < index.length; i++) {

                    var row = index[i];

                    if(sheetId == ""){

                           sheetId = row.SHEETID;

                       }else{

                           sheetId = sheetId+","+row.SHEETID;

                       }

                }

               }

               var data = {

                xmmc:$("#ssxm").combobox("getText"),//所属项目(模糊)

                xmlx:$("#xmlx").combobox("getText"),//项目类型(模糊)

                  xmzt:$("#xmzt").combobox("getValue"),//项目状态

                sheetId:sheetId//选中记录的IDS

            };

            var url = window.location.protocol + "//" + window.location.host + resources.webappName + "/servlet/exportXmxx";

                 name = "导出项目信息表";

            openPostWindow(url, JSON.stringify(data), name); //调用openPostWindow方法，请求JSP url post 传递参数

        }

        /*********请求JSP url post 传递参数**********************/

        function openPostWindow(url, data, name) {

            var tempForm = document.createElement("form");

            data = encodeURI(encodeURI(data));//两次加密避免中文乱码

            tempForm.id="tempForm1";

            tempForm.method="post";

            tempForm.action=url;

            if(name != null && name!=undefined && name != ''){//当需要打开一个新窗口时必须要传递一个name

                tempForm.target=name;

            }else{

                tempForm.target="_self";

            }

            var hideInput = document.createElement("input");

            hideInput.type="hidden";

            hideInput.name= "params";//接收的名字

            hideInput.value= data;

            tempForm.appendChild(hideInput);

            if(name != null && name!=undefined && name != ''){//当需要打开一个新窗口时必须要传递一个name

                tempForm.attachEvent("onsubmit",function(){ _openWindow(name); });

            }else{

                tempForm.attachEvent("onsubmit",function(){ return false; });

            }

            document.body.appendChild(tempForm);

            tempForm.fireEvent("onsubmit");

            tempForm.submit();

            document.body.removeChild(tempForm);

        }

        function _openWindow(name){

            window.open('about:blank',name,'channelmode=1,fullscreen=1');

        }

1.以上为前台部分

2.做好对应的配置

3.以下为后台代码参考示例：

package com.sdjxd.rsgxm.xmzfzr.dao;

import com.google.gson.Gson;

import com.google.gson.reflect.TypeToken;

import com.sdjxd.pms.platform.data.DbOper;

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.net.URLDecoder;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Map;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.poi.xssf.usermodel.XSSFCell;

import org.apache.poi.xssf.usermodel.XSSFRow;

import org.apache.poi.xssf.usermodel.XSSFSheet;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import sadmpweb.zzgl.Util;

public class exportXmxxDao extends HttpServlet

{

  public void doGet(HttpServletRequest request, HttpServletResponse response)

    throws ServletException, IOException

  {

    SimpleDateFormat sdf = new SimpleDateFormat("yyyy年MM月dd日 HH时mm分ss秒");

    Date dt = new Date();

    String time = sdf.format(dt);

    String path1 = System.getProperty("user.dir");

    path1 = path1.substring(, path1.indexOf("bin")) + "webapps\\sadmpserver\\";

    String sourcePath = path1 + "resource\\数据导出公用模板.xlsx";

    String descPath = path1 + "resource";

    File fileDir = new File(descPath);

    if (!fileDir.exists()) {

      fileDir.mkdir();

    }

    String targetFileName = "弱栅格—项目信息表导出—" + time + ".xlsx";

    File targetFile = new File(fileDir, targetFileName);

    String targetFilePath = targetFile.getPath();

    String data = (request.getParameter("params") == null) ? "" : request.getParameter("params");

    data = URLDecoder.decode(URLDecoder.decode(data, "utf-8"), "utf-8");

    Gson gson = new Gson();

    Map jsonObj = (Map)gson.fromJson(data, new TypeToken() {  }

    .getType());

    String filter = getFilter(jsonObj);

    try {

      targetFile = new Util().copyFile(sourcePath, targetFilePath);

      FileInputStream fis = new FileInputStream(targetFile);

      XSSFWorkbook wb = new XSSFWorkbook(fis);

      XSSFSheet hs1 = wb.getSheetAt();

      XSSFRow row1 = hs1.createRow();

      XSSFCell cell00 = row1.createCell();

      XSSFCell cell01 = row1.createCell();

      XSSFCell cell02 = row1.createCell();

      XSSFCell cell03 = row1.createCell();

      XSSFCell cell04 = row1.createCell();

      XSSFCell cell05 = row1.createCell();

      XSSFCell cell06 = row1.createCell();

      XSSFCell cell07 = row1.createCell();

      XSSFCell cell08 = row1.createCell();

      XSSFCell cell09 = row1.createCell();

      XSSFCell cell10 = row1.createCell();

      XSSFCell cell11 = row1.createCell();

      XSSFCell cell12 = row1.createCell();

      XSSFCell cell13 = row1.createCell();

      XSSFCell cell14 = row1.createCell();

      XSSFCell cell15 = row1.createCell();

      XSSFCell cell16 = row1.createCell();

      XSSFCell cell17 = row1.createCell();

      cell00.setCellValue("数据列名1");

      cell01.setCellValue("数据列名2");

      cell02.setCellValue("数据列名2");

      cell03.setCellValue("数据列名4");

      cell04.setCellValue("数据列名5");

      cell05.setCellValue("数据列名6");

      cell06.setCellValue("数据列名7");

      cell07.setCellValue("数据列名8");

      cell08.setCellValue("数据列名9");

      cell09.setCellValue("数据列名10");

      cell10.setCellValue("数据列名11");

      cell11.setCellValue("数据列名12");

      cell12.setCellValue("数据列名13");

      cell13.setCellValue("数据列名14");

      cell14.setCellValue("数据列名15");

      cell15.setCellValue("数据列名16");

      cell16.setCellValue("数据列名17");

      cell17.setCellValue("数据列名18");

      dcxx(fis, wb, filter);

      FileOutputStream out = new FileOutputStream(targetFile);

      wb.write(out);

      downloadFile(request, response, targetFileName, descPath + "\\" + targetFileName);

      fis.close();

      out.flush();

      out.close();

    } catch (Exception e) {

      e.printStackTrace();

    }

  }

  public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException

  {

    doGet(request, response);

  }

  public void downloadFile(HttpServletRequest request, HttpServletResponse response, String targetFileName, String path_filename) throws Exception

  {

    response.setContentType("text/html;charset=UTF-8");

    BufferedInputStream in = null;

    BufferedOutputStream out = null;

    request.setCharacterEncoding("UTF-8");

    try {

      File f = new File(path_filename);

      response.setContentType("application/x-excel");

      response.setCharacterEncoding("UTF-8");

      response.setHeader("Content-Disposition", "attachment; filename=" + new String(targetFileName.getBytes("gbk"), "iso-8859-1"));

      response.setHeader("Content-Length", String.valueOf(f.length()));

      in = new BufferedInputStream(new FileInputStream(f));

      out = new BufferedOutputStream(response.getOutputStream());

      byte[] data = new byte[];

      int len = ;

      while (- != (len = in.read(data, , data.length)))

        out.write(data, , len);

    }

    catch (Exception e) {

      e.printStackTrace();

    } finally {

      if (in != null) {

        in.close();

      }

      if (out != null)

        out.close();

    }

  }

  private String getFilter(Map<String, String> jsonObj)

  {

    String res = "";

    String xmmc = (String)jsonObj.get("xmmc");

    String xmzt = (String)jsonObj.get("xmzt");

    String xmlx = (String)jsonObj.get("xmlx");

    String sheetId = (String)jsonObj.get("sheetId");

    StringBuffer filter = new StringBuffer();

    if ((xmmc != null) && (!"".equals(xmmc)) && (!xmmc.equals("--不限--"))) {

      filter.append(" AND WYXMJC LIKE '%").append(xmmc).append("%' ");

    }

    if ((xmlx != null) && (!"".equals(xmlx)) && (!xmlx.equals("--不限--"))) {

      filter.append(" AND XMSX LIKE '%").append(xmlx).append("%' ");

    }

    if ((xmzt != null) && (!"".equals(xmzt)) && (!xmzt.equals("--不限--"))) {

      filter.append(" AND XMZT = '").append(xmzt).append("' ");

    }

    if ((sheetId != null) && (!"".equals(sheetId))) {

      filter.append(" AND SHEETID IN ('").append(sheetId.replaceAll(",", "','")).append("') ");

    }

    res = filter.toString();

    return res;

  }

  private void dcxx(FileInputStream fis, XSSFWorkbook wb, String filter) throws SQLException {

    StringBuffer sb = new StringBuffer();

    sb.append(" SELECT *FROM ( SELECT ROW_NUMBER() OVER (  ORDER BY  X.WYXMBH DESC  ) AS ROWNUMBER,  X.* FROM SD_RSG_XMGL X");

    sb.append(" WHERE 1=1");

    sb.append(filter.toString());

    sb.append("  ) A  ORDER BY ROWNUMBER");

    ResultSet rs = DbOper.executeQuery(sb.toString());

    XSSFSheet hs1 = wb.getSheetAt();

    int i = ;

    while (rs.next()) {

      XSSFRow row1 = hs1.createRow(i);

      String WYXMMC = turn(rs.getString("WYXMMC"));

      String WYXMJC = turn(rs.getString("WYXMJC"));

      String WYXMBH = turn(rs.getString("WYXMBH"));

      String XMFZR = turn(rs.getString("XMFZR"));

      String JF = turn(rs.getString("JF"));

      String JFXTBH = turn(rs.getString("JFXTBH"));

      String JFXTMC = turn(rs.getString("JFXTMC"));

      String YYS = turn(rs.getString("YYS"));

      String YYSID = turn(rs.getString("YYSID"));

      String ZS = turn(rs.getString("ZS"));

      String ZSID = turn(rs.getString("ZSID"));

      String XMZT = turn(rs.getString("XMZT"));

      if ("".equals(XMZT))

        XMZT = "未开始";

      else if ("".equals(XMZT))

        XMZT = "进行中";

      else if ("".equals(XMZT)) {

        XMZT = "已完成";

      }

      String XMSX = turn(rs.getString("XMSX"));

      String XMRWZT = turn(rs.getString("XMRWZT"));

      if ("".equals(XMRWZT))

        XMRWZT = "未开始";

      else if ("".equals(XMRWZT))

        XMRWZT = "进行中";

      else if ("".equals(XMRWZT)) {

        XMRWZT = "已完成";

      }

      String XMSJZT = turn(rs.getString("XMSJZT"));

      if ("".equals(XMSJZT))

        XMSJZT = "未开始";

      else if ("".equals(XMSJZT))

        XMSJZT = "进行中";

      else if ("".equals(XMSJZT)) {

        XMSJZT = "已完成";

      }

      String XMKSSJ = turn(rs.getString("XMKSSJ"));

      String XMJSSJ = turn(rs.getString("XMJSSJ"));

      String XMFW = turn(rs.getString("XMFW"));

      String XMSM = turn(rs.getString("XMSM"));

      String XMBZ = turn(rs.getString("XMBZ"));

      XSSFCell cell00 = row1.createCell();

      XSSFCell cell01 = row1.createCell();

      XSSFCell cell02 = row1.createCell();

      XSSFCell cell03 = row1.createCell();

      XSSFCell cell04 = row1.createCell();

      XSSFCell cell05 = row1.createCell();

      XSSFCell cell06 = row1.createCell();

      XSSFCell cell07 = row1.createCell();

      XSSFCell cell08 = row1.createCell();

      XSSFCell cell09 = row1.createCell();

      XSSFCell cell10 = row1.createCell();

      XSSFCell cell11 = row1.createCell();

      XSSFCell cell12 = row1.createCell();

      XSSFCell cell13 = row1.createCell();

      XSSFCell cell14 = row1.createCell();

      XSSFCell cell15 = row1.createCell();

      XSSFCell cell16 = row1.createCell();

      XSSFCell cell17 = row1.createCell();

      cell00.setCellValue(WYXMMC);

      cell01.setCellValue(WYXMJC);

      cell02.setCellValue(WYXMBH);

      cell03.setCellValue(XMFZR);

      cell04.setCellValue(JF);

      cell05.setCellValue(JFXTBH);

      cell06.setCellValue(JFXTMC);

      cell07.setCellValue(YYS);

      cell08.setCellValue(ZS);

      cell09.setCellValue(XMZT);

      cell10.setCellValue(XMSX);

      cell11.setCellValue(XMRWZT);

      cell12.setCellValue(XMSJZT);

      cell13.setCellValue(XMKSSJ);

      cell14.setCellValue(XMJSSJ);

      cell15.setCellValue(XMFW);

      cell16.setCellValue(XMSM);

      cell17.setCellValue(XMBZ);

      ++i;

    }

  }

  public static String turn(String s) {

    if (("NULL".equals(s)) || ("".equals(s)) || (s == null) || ("null".equals(s)) || ("无".equals(s))) {

      s = " ";

    }

    return s;

  }

}

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