需求：利用excel模板导出，有两个sheet，其中一个sheet涉及固定字段导出和多数
          据(List)导出

1、模板

sheet1：

 sheet2：

 2、主要代码

public static void outputExcelForTunnelMonitor(HttpServletResponse response, EngineerTunnelMonitorExcelVo engineerTunnelMonitor){
        response.setContentType("application/vnd.ms-excel");
        response.setCharacterEncoding("utf-8");
        response.setHeader("Content-disposition", "attachment;filename=" + "问题清单" + ".xlsx");
        // 模板注意 用{} 来表示你要用的变量 如果本来就有"{","}" 特殊字符 用"\{","\}"代替
        // 填充list 的时候还要注意 模板中{.} 多了个点 表示list

        //获取文件路径
        String url="excelMode/周边.xlsx";
        if(null!=engineerTunnelMonitor.getTestPart() && 1==engineerTunnelMonitor.getTestPart()) {
            url="excelMode/拱顶.xlsx";
        }
        ClassPathResource resource= new ClassPathResource(url);
        String templateFileName = null;
        try {
            templateFileName = resource.getFile().getPath();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }

        ExcelWriter excelWriter = null;
        try {
            excelWriter = EasyExcel.write(response.getOutputStream())
                    .withTemplate(templateFileName)
                    .build();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        WriteSheet writeSheet = EasyExcel.writerSheet(0,"量测记录表").build();
        FillConfig fillConfig = FillConfig.builder().forceNewRow(Boolean.TRUE).build();
        //sheet1数据(list)
        excelWriter.fill(engineerTunnelMonitor.getEngineerTunnelMonitorRecordList(), fillConfig, writeSheet);

        //sheet1(表头固定数据)
        Map<String, Object> map = new HashMap<>();
        map.clear();
        map.put("pointName", engineerTunnelMonitor.getPointName());
        map.put("constructionName", engineerTunnelMonitor.getConstructionName());
        map.put("wallRockLevel", engineerTunnelMonitor.getWallRockLevel());
        map.put("fractureSurfaceMileage", engineerTunnelMonitor.getFractureSurfaceMileage());
        map.put("buildTime", engineerTunnelMonitor.getBuildTime());
        map.put("constructMethod", engineerTunnelMonitor.getConstructMethod());
        map.put("observationMethod", engineerTunnelMonitor.getObservationMethod());
        map.put("testCode", engineerTunnelMonitor.getTestCode());
        excelWriter.fill(map, writeSheet);

        //sheet2固定数据
        Map<String, Object> map2 = new HashMap<>();
        EngineerTunnelMonitorAnalyseExcelVo engineerTunnelMonitorAnalyse = engineerTunnelMonitor.getEngineerTunnelMonitorAnalyse();
        map2.clear();
        map2.put("name", engineerTunnelMonitorAnalyse.getName());
        map2.put("constructionName", engineerTunnelMonitorAnalyse.getConstructionName());
        map2.put("fractureSurfaceMileage", engineerTunnelMonitorAnalyse.getFractureSurfaceMileage());
        map2.put("testPart", engineerTunnelMonitorAnalyse.getTestPart());
        map2.put("wallRockLevel", engineerTunnelMonitorAnalyse.getWallRockLevel());
        map2.put("testCode", engineerTunnelMonitorAnalyse.getTestCode());
        map2.put("firstTime", engineerTunnelMonitorAnalyse.getFirstTime());
        map2.put("lastTime", engineerTunnelMonitorAnalyse.getLastTime());
        map2.put("dataTaskTime", engineerTunnelMonitorAnalyse.getDataTaskTime());
        map2.put("regressionEquation", engineerTunnelMonitorAnalyse.getRegressionEquation());
        map2.put("coefficientAssociation", engineerTunnelMonitorAnalyse.getCoefficientAssociation());
        map2.put("displacementLevel", engineerTunnelMonitorAnalyse.getDisplacementLevel());
        map2.put("rate", engineerTunnelMonitorAnalyse.getRate());
        map2.put("conclusion", engineerTunnelMonitorAnalyse.getConclusion());
        excelWriter.fill(map2, EasyExcel.writerSheet(1,"回归分析表").build());

        excelWriter.finish();
    }