1. 导入依赖

<!--     解析excel   -->
        <dependency>

            <groupId>org.apache.poi</groupId>

            <artifactId>poi</artifactId>

            <version>3.13</version>

        </dependency>

        <dependency>

            <groupId>org.apache.poi</groupId>

            <artifactId>poi-ooxml</artifactId>

            <version>3.13</version>

        </dependency>

解析代码

  private ArrayList<CityCode> getCityCodes() throws IOException {
        //获取项目地址
    //    String ss = System.getProperty("user.dir");
		//excel 地址
    //    String url = ss+"\\src\\main\\resources\\static\\excel\\AMap_adcode_citycode.xlsx";

        //打war包读取资源文件
        ClassPathResource resource = new ClassPathResource("static/excel/AMap_adcode_citycode.xlsx");
        InputStream inputStream =  resource.getInputStream();
		//获取 输入流
        FileInputStream inputStream=new FileInputStream(new File(url));
        
        XSSFWorkbook workbook = new XSSFWorkbook(inputStream);
        //sheet 包含excel内容
        XSSFSheet sheet = workbook.getSheetAt(0);
        //getLastRowNum 总行数
        ArrayList<CityCode>  list=new ArrayList<CityCode>();
        for(int i=2 ;i<sheet.getLastRowNum();i++){
            CityCode cityCode=new CityCode();
            XSSFRow xssfRow = sheet.getRow(i);
            //获取行的第一列内容
            String city =xssfRow.getCell(0).getStringCellValue();
            //获取行的第二zuih列内容
            String code =xssfRow.getCell(1).getStringCellValue();

            cityCode.setAdcode(code);

            cityCode.setCity(city);

            list.add(cityCode);
        }
        return list;
    }