@RestController
@RequestMapping("/api/excel")
public class ExcelController {

@Autowired
private CompanyService companyService;  

@RequestMapping(value = "/companyExcel",method = RequestMethod.POST)
@ResponseBody
public void exportCompanyExcel(Integer id, String contacts, String contactsPhone,HttpServletResponse response) {
    try {
        List<Company> companyList = companyService.selectByIdOrContactOrPhone(id,contacts,contactsPhone );
        HSSFWorkbook wb = new HSSFWorkbook();

        HSSFSheet sheet = wb.createSheet("委托方信息列表");

        HSSFRow row = null;

        row = sheet.createRow(0);
        row.setHeight((short) (30 * 20));
        row.createCell(0).setCellValue("委托方信息列表");

   
        CellRangeAddress rowRegion = new CellRangeAddress(0, 0, 0, 2);
        sheet.addMergedRegion(rowRegion);
        row = sheet.createRow(1);
        row.setHeight((short) (22.50 * 20));//设置行高
        row.createCell(0).setCellValue("Id");//为第一个单元格设值
       row.createCell(1).setCellValue("logo");//为第二个单元格设值
        row.createCell(2).setCellValue("委托方中文名称");//为第三个单元格设值
        row.createCell(3).setCellValue("委托方英文名称");
        row.createCell(4).setCellValue("法人代表");
        row.createCell(5).setCellValue("联系电话");
        row.createCell(6).setCellValue("企业地址");
        row.createCell(7).setCellValue("详细地址");
        row.createCell(8).setCellValue("一般纳税人");
        row.createCell(9).setCellValue("邮箱");
        row.createCell(10).setCellValue("网址");
        row.createCell(11).setCellValue("备注");
        row.createCell(12).setCellValue("经营范围");
        row.createCell(13).setCellValue("状态");
       row.createCell(14).setCellValue("审核状态");
        row.createCell(14).setCellValue("审核备注");

        for (int i = 0; i < companyList.size(); i++) {
            row = sheet.createRow(i + 2);
            Company company = companyList.get(i);
                row.createCell(0).setCellValue(company.getId());
               row.createCell(1).setCellValue(company.getLogo());
                row.createCell(2).setCellValue(company.getNameCN());
                row.createCell(3).setCellValue(company.getNameEN());
                row.createCell(4).setCellValue(company.getContacts());
                row.createCell(5).setCellValue(company.getContactsPhone());
                row.createCell(6).setCellValue(company.getAddress());
                row.createCell(7).setCellValue(company.getAddressDetail());
                row.createCell(8).setCellValue(company.getCommonTaxpayer() == 1? "是" :"否");
                row.createCell(9).setCellValue(company.getEmail());
                row.createCell(10).setCellValue(company.getUrl());
                row.createCell(11).setCellValue(company.getRemark());
                row.createCell(12).setCellValue(company.getBusinessScopeIds());
                row.createCell(13).setCellValue(company.getStatus() ==1? "启用":"停用");
              row.createCell(14).setCellValue(company.getAuditStatus() ==1);
                row.createCell(14).setCellValue(company.getAuditRemark());
        }
        sheet.setDefaultRowHeight((short) (16.5 * 20));
        //列宽自适应
        for (int i = 0; i <= 13; i++) {
            sheet.autoSizeColumn(i);
        }
        String title= "company";
        String  fileName = new String(title.getBytes("GB2312"), "ISO_8859_1");
        fileName = URLEncoder.encode(fileName,"utf-8");

        response.setContentType("application/vnd.ms-excel;charset=utf-8");
        OutputStream os = response.getOutputStream();
        response.setHeader("Content-disposition", "attachment;filename="+fileName+".xls");//默认Excel名称
        wb.write(os);
        os.flush();
        os.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

前端vue代码：

const excApiBase = ‘/api/excel’
import {exportCompanyExcel} from ‘@/api/axios’

// 导出Excel文件
export const exportClientInfoExcel = (params) => {
return exportCompanyExcel(${excApiBase}/companyExcel,params)
}

import axios from ‘axios’;

/**

• 导出产品信息表

• @param url

• @param params

• @returns {AxiosPromise}
  */
  export const exportCompanyExcel = ( id,contacts,contactsPhone ) => {
  return axios({
  method: ‘post’,
  url: /api/excel/companyExcel,
  params: {id,contacts,contactsPhone},
  responseType: ‘blob’,
  headers: {
  }
  });
  };

     <el-form-item>
         <el-button type="primary" icon="el-icon-download" @click="exportClientInfoExcel">导出</el-button>
       </el-form-item>
  

//js代码
import {exportCompanyExcel} from ‘@/api/axios’

exportClientInfoExcel() {
  const that = this
  //that.filters.id,that.filters.contacts,that.filters.contactsPhone  通过id 联系人  联系电话 导出excel
  exportCompanyExcel(that.filters.id,that.filters.contacts,that.filters.contactsPhone).then(response => {
    that.downloadFile(response.data);
  })
},
downloadFile(data) {
  // 文件导出
  if (!data) {
    return
  }
  let url = window.URL.createObjectURL(new Blob([data]));
  let link = document.createElement('a');
  link.style.display = 'none';
  link.href = url;
  link.setAttribute('download', '委托方信息表.xls');
  document.body.appendChild(link);
  link.click()
}  }}