利用第三方poi工具导出，以注解方式

———-pojo 实体类
public class UserChangeVo extends BaseVO implements Cloneable {

/** @Fields serialVersionUID: */
private static final long serialVersionUID = 1L;

@Excel(name = "总数", width = 35)
private String userSum;// 用户总数

@Excel(name = "新增", width = 35)
private String addSum;// 新增户数

@Excel(name = "报停", width = 35)
private String btSum;// 报停总户数

@Excel(name = "暂拆", width = 35)
private String zcSum;// 暂拆户数

@Excel(name = "销户户数", width = 35)
private String xhSum;// 销户户数

}
//需要get set方法

———-导出

    /**
     * 
     * @Description
     * @return
     * @throws Exception
     */
    @RequestMapping("/exportUserInfo.do")
    public void exportUserInfo(HttpServletResponse response,UserChangeVo userChangeVo) throws Exception {
Listvo=userChangeService.getCustomSum(userChangeVo);//查询结果
ExportParams exportParams = new ExportParams();
exportParams.setSheetName("情况统计");//工作表名称
exportParams.setTitle("情况统计");//导出表名
Workbook workbook=ExcelExportUtil.exportExcel(exportParams,
UserChangeVo.class, vo);//导出结果集
response.setContentType("applicationnd.ms-excel"); // 改成输出excel文件
String fileName = java.net.URLEncoder.encode("用户变动情况统计", "UTF-8");
response.setHeader("Content-disposition", "attachment; filename="+ fileName + ".xls");// 03版本后缀xls，之后的xlsx
OutputStream out = response.getOutputStream();
        workbook.write(out);//输出结果集
}