java导出Excel表格

package com.lin.utils;

import java.util.List;
import java.util.Map;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.streaming.SXSSFWorkbook;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

/**
 * 生成Excel文件的工具类
 * @author libo
 */
public class ExcelUtil {
    
    /**
     * 创建excel文档，
     * @param list 数据
     * @param keys list中map的key数组集合
     * @param columnNames excel的列名
     * */
    public static Workbook createWorkBook(List<Map<String, Object>> list,String []keys,String columnNames[]) {
        // 创建excel工作簿
        SXSSFWorkbook wb = new SXSSFWorkbook(100);//在内存中只保留100行记录,超过100就将之前的存储到磁盘里
        // 创建第一个sheet（页），并命名
        Sheet sheet = wb.createSheet(list.get(0).get("sheetName").toString()); 
        // 手动设置列宽。第一个参数表示要为第几列设；，第二个参数表示列的宽度，n为列高的像素数。
        for(int i=0;i<keys.length;i++){
            sheet.setColumnWidth(i, (int) (35.7 * 150));
        }

        // 创建第一行
        Row row = sheet.createRow(0);

        // 创建两种单元格格式
        CellStyle cs = wb.createCellStyle();
        CellStyle cs2 = wb.createCellStyle();

        // 创建两种字体
        Font f = wb.createFont();
        Font f2 = wb.createFont();

        // 创建第一种字体样式（用于列名）
        f.setFontHeightInPoints((short)10);
        f.setColor(IndexedColors.BLACK.getIndex());
        f.setBoldweight(Font.BOLDWEIGHT_BOLD);

        // 创建第二种字体样式（用于值）
        f2.setFontHeightInPoints((short)10);
        f2.setColor(IndexedColors.BLACK.getIndex());

        // 设置第一种单元格的样式（用于列名）
        cs.setFont(f);
        cs.setBorderLeft(CellStyle.BORDER_THIN);
        cs.setBorderRight(CellStyle.BORDER_THIN);
        cs.setBorderTop(CellStyle.BORDER_THIN);
        cs.setBorderBottom(CellStyle.BORDER_THIN);
        cs.setAlignment(CellStyle.ALIGN_CENTER);

        // 设置第二种单元格的样式（用于值）
        cs2.setFont(f2);
        cs2.setBorderLeft(CellStyle.BORDER_THIN);
        cs2.setBorderRight(CellStyle.BORDER_THIN);
        cs2.setBorderTop(CellStyle.BORDER_THIN);
        cs2.setBorderBottom(CellStyle.BORDER_THIN);
        cs2.setAlignment(CellStyle.ALIGN_CENTER);
        //设置列名
        for(int i=0;i<columnNames.length;i++){
            Cell cell = row.createCell(i);
            cell.setCellValue(columnNames[i]);
            cell.setCellStyle(cs);
        }
        //设置每行每列的值
        for (int i = 1; i < list.size(); i++) {
            // Row 行,Cell 方格 , Row 和 Cell 都是从0开始计数的
            // 创建一行，在页sheet上
            Row row1 = sheet.createRow(i);
            // 在row行上创建一个方格
            for(int j=0;j<keys.length;j++){
                Cell cell = row1.createCell(j);
                cell.setCellValue(list.get(i).get(keys[j]) == null?" ": list.get(i).get(keys[j]).toString());
                cell.setCellStyle(cs2);
            }
        }
        return wb;
    }

}

package com.lin.controller;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.annotation.Resource;
import javax.servlet.ServletContext;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.MultipartResolver;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;

import com.lin.domain.data.ResData;
import com.lin.domain.data.ResListData;
import com.lin.domain.error.Error;
import com.lin.domain.sysUser.SysUser;
import com.lin.service.RoleService;
import com.lin.service.SysUserService;
import com.lin.utils.Aes;
import com.lin.utils.DateTimeUtils;
import com.lin.utils.ExcelUtil;
import com.lin.utils.ResponseUtils;
import com.lin.utils.Upload;
import com.lin.utils.Utils;
import com.sun.jersey.api.client.Client;

import net.sf.json.JSONObject;

/**
 * 后台用户-controller
 * @author libo
 */
@Controller
@RequestMapping("/sysUser")
public class SysUserController {

    @Resource
    private SysUserService sysUserService;
    @Resource
    private RoleService rService;
    
    @Value(value="${headImgPath}")    //后台图片保存地址
    private String headImgPath;
    
    @Value(value="${uploadHost}")
    private String uploadHost;    //项目host路径    
    
    @Value(value="${sysUserDefImg}")
    private String sysUserDefImg;    //系统用户默认头像
/**
     * 导出系统用户数据
     * @param req
     * @param res
     * @param name
     * @param phone
     * @param email
     * @param roleId
     * @param createTimeStart
     * @param createTimeEnd
     * @param status
     * @param departmentId
     * @throws IOException
     */
    @ResponseBody
    @RequestMapping(value="/exportSysUsers.do", method=RequestMethod.GET)
    public void exportSysUsers(HttpServletRequest req,HttpServletResponse res,
            String name, String phone, String email, Integer roleId, String createTimeStart, String createTimeEnd, 
            Integer status, Integer departmentId) throws IOException{
        Map<String,Object> params = new HashMap<String,Object>();
        params.put("name", "".equals(name) || null == name ? null : name);
        params.put("phone", "".equals(phone) || null == phone ? null : phone);
        params.put("email", "".equals(email) || null == email ? null : email);
        params.put("roleId", "".equals(roleId) || null == roleId ? null : roleId);
        params.put("createTimeStart", "".equals(createTimeStart) || null == createTimeStart ? null : createTimeStart+" 00:00:00");
        params.put("createTimeEnd", "".equals(createTimeEnd) || null == createTimeEnd ? null : createTimeEnd+" 23:59:59");
        params.put("status", "".equals(status) || null == status ? null : status);
        params.put("departmentId", "".equals(departmentId) || null == departmentId ? null : departmentId);
        
        Date d = new Date();
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
        String formatTime = sdf.format(d);
        String fileName="系统用户表-"+formatTime;
        //填充projects数据
        List<SysUser> userList = sysUserService.getUserList(params);
        List<Map<String,Object>> list=createExcelRecord(userList);
        String columnNames[]={"姓名", "性别", "邮箱", "电话", "部门", "角色", "状态", "创建时间"};//列名
        String keys[] = {"name", "gender", "email", "phone", "department", "role", "status", "createTime"};//map中的key
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        try {
            ExcelUtil.createWorkBook(list,keys,columnNames).write(os);
        } catch (IOException e) {
            e.printStackTrace();
        }
        byte[] content = os.toByteArray();
        InputStream is = new ByteArrayInputStream(content);
        // 设置response参数，可以打开下载页面
        res.reset();
        res.setContentType("application/vnd.ms-excel;charset=utf-8");
        res.setHeader("Content-Disposition", "attachment;filename="+ new String((fileName + ".xls").getBytes(), "iso-8859-1"));
        ServletOutputStream out = res.getOutputStream();
        BufferedInputStream bis = null;
        BufferedOutputStream bos = null;
        try {
            bis = new BufferedInputStream(is);
            bos = new BufferedOutputStream(out);
            byte[] buff = new byte[2048];
            int bytesRead;
            // Simple read/write loop.
            while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
                bos.write(buff, 0, bytesRead);
            }
        } catch (final IOException e) {
            throw e;
        } finally {
            if (bis != null)
                bis.close();
            if (bos != null)
                bos.close();
        }
    }
    
    /**
     * 生成Excel数据
     * @param userList
     * @return
     */
    private List<Map<String, Object>> createExcelRecord(List<SysUser> userList) {
        List<Map<String, Object>> listmap = new ArrayList<Map<String, Object>>();
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("sheetName", "sheet1");
        listmap.add(map);
        SysUser user = null;
        for (int j = 0; j < userList.size(); j++) {
            user = userList.get(j);
            Map<String, Object> mapValue = new HashMap<String, Object>();
            mapValue.put("name", user.getName());
            mapValue.put("gender", (user.getGender()==1) ? "男":((user.getGender()==0) ? "女" : "保密"));
            mapValue.put("email", user.getEmail());
            mapValue.put("phone", user.getPhone());
            mapValue.put("department", user.getDepartment().getName());
            mapValue.put("role", user.getRole().getName());
            mapValue.put("status", user.getStatus()==1 ? "启用" : "禁用");
            mapValue.put("createTime", user.getCreateTime().substring(0, 19));
            listmap.add(mapValue);
        }
        return listmap;
    }
    
    
}

　　　　　/**
         * 点击导出按钮，导出用户数据
         */
        $scope.exportData = function () {
            //请求接口的参数
            var name = $scope.nameSearch || '',                 //姓名
                phone = $scope.phoneSearch || '',              //电话
                email = $scope.emailSearch || '',              //邮箱
                roleId = $scope.roleIdSearch || '',            //角色id
                departmentId = $scope.departmentIdSearch || '', //部门id
                createTimeStart = $('#createTimeRange').val() ? $('#createTimeRange').val().substring(0,10)+' 00:00:00' : '',  //创建时间（起始时间）
                createTimeEnd = $('#createTimeRange').val() ? $('#createTimeRange').val().substring(13,23)+' 23:59:59' : '',   //创建时间（截止时间）
                status = $scope.statusSearch || '';             //状态（1=正常，0=禁用）

            var url = apiServ.sysUser.exportSysUsers.url+'?name='+name+'&phone='+phone+'&email='+email+'&roleId='+roleId+'&departmentId='+departmentId+
                '&createTimeStart='+createTimeStart+'&createTimeEnd='+createTimeEnd+'&status='+status;
            window.open(url);
        }