<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>5.2.0</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>5.2.0</version>
</dependency>

import org.apache.poi.hssf.usermodel.*;

/**
 * excel導出工具
 *
 * @author Tomas·Red
 * @since
 */

public class ExcelExportUtil {

    /**
     * 導出Excel
     * @param sheetName sheet名稱
     * @param title 標題
     * @param values 內容
     * @param wb HSSFWorkbook對象
     * @return
     */
    public static HSSFWorkbook getHSSFWorkbook(String sheetName, String []title, String [][]values, HSSFWorkbook wb){
        // 第一步，創建一個HSSFWorkbook，對應一個Excel文件 
　　　　　// 你創建 HSSFWorkbook 就是代表創建 .xls(2003)最大導出行數為：65536；創建XSSFWorkbook 代表創建.xlsx(2007)最大行數為：1048576 至于用什么自己定義

        if(wb == null){
            wb = new HSSFWorkbook();
        }
        // 第二步，在workbook中添加一個sheet,對應Excel文件中的sheet
        HSSFSheet sheet = wb.createSheet(sheetName);
        // 第三步，在sheet中添加表頭第0行,注意老版本poi對Excel的行數列數有限制
        HSSFRow row = sheet.createRow(0);
        // 第四步，創建單元格，并設置值表頭 設置表頭居中
        HSSFCellStyle style = wb.createCellStyle();
        //style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 樣式我給隱藏了，因為5.2的poi，不支持這樣寫了，我沒去查，后期查了之后再修改吧
        //聲明列對象
        HSSFCell cell = null;
        //創建標題
        for(int i=0;i<title.length;i++){
            cell = row.createCell(i);
            cell.setCellValue(title[i]);
            cell.setCellStyle(style);
        }
        //創建內容
        for(int i=0;i<values.length;i++){
            row = sheet.createRow(i + 1);
            for(int j=0;j<values[i].length;j++){
                //將內容按順序賦給對應的列對象
                row.createCell(j).setCellValue(values[i][j]);
            }
        }
        return wb;
    }
}

@RequestMapping("/handExprot")
    public Object handExprot(HttpServletResponse response, WellEquipmentParam wellEquipmentParam){
        // 導出的數據
        List<Well> list = (List<Well>) mainBusiness.findAll();
        //excel標頭
        String[] title = {"title1", "title2", "title3", "title4", "title5", "title6", "title7", "title8"};

        //excel文件名
        String fileName = "活動報名信息表" + System.currentTimeMillis() + ".xls";
        //sheet名
        String sheetName = "活動報名信息表";
        int size = list.size();
        String [][] content = new String[size][8];
　　　　　// 循環給單元格賦值
        for (int i = 0; i < list.size(); i++) {
            content[i] = new String[title.length];
            Well well = list.get(i);
            content[i][0] = well.getId() + "";
            content[i][1] = well.getWellName() + "";
            content[i][2] = well.getWellCode() + "";
            content[i][3] = well.getWellType() + "";
            content[i][4] = well.getLatitude() + "";
            content[i][5] = well.getLongitude() + "";
            content[i][6] = well.getWellDepth() + "";
            content[i][7] = well.getWellAddress() + "";
        }

        //創建HSSFWorkbook
        HSSFWorkbook wb = ExcelExportUtil.getHSSFWorkbook(sheetName, title, content, null);

        //響應到客戶端
        try {
            this.setResponseHeader(response, fileName);
            OutputStream os = response.getOutputStream();
            wb.write(os);
            os.flush();
            os.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

//發送響應流方法
    public void setResponseHeader(HttpServletResponse response, String fileName) {
        try {
            try {
                fileName = new String(fileName.getBytes(),"ISO8859-1");
            } catch (UnsupportedEncodingException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            response.setContentType("application/octet-stream;charset=ISO8859-1");
            response.setHeader("Content-Disposition", "attachment;filename="+ fileName);
            response.addHeader("Pargam", "no-cache");
            response.addHeader("Cache-Control", "no-cache");
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

export function handExprot(data) {
    let consturl=process.env.SERVER_API + "/WellController/handExprot" + "?" + qs.stringify(data, { indices: false });
    var xhr = new XMLHttpRequest();
    console.log({consturl})
    xhr.open("get", consturl, true); // get、post都可
    xhr.responseType = "blob";  // 轉換流
    xhr.setRequestHeader("token",window.localStorage.getItem("token")); //加請求頭
    xhr.onload = function() {
        // debugger
        if (this.status == 200) {
            var blob = this.response;
            var a = document.createElement("a")
            var url = window.URL.createObjectURL(blob)
            a.href = url
            a.download = "導出文件.xls"  //
        }
        a.click()
        window.URL.revokeObjectURL(url)
    }
    xhr.send();
}