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快速上手

引入依赖

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>easyexcel</artifactId>
    <version>3.1.0</version>
</dependency>

    public static void main(String[] args) {
        final List<DataDemoVO> list = new LinkedList<DataDemoVO>();
        EasyExcel.read("C:\\Desktop\\key_part.xlsx")
                .head(DataDemoVO.class)
                .sheet().registerReadListener(new AnalysisEventListener<DataDemoVO>() {

            public void invoke(DataDemoVO dataDemoVO, AnalysisContext analysisContext) {
                list.add(dataDemoVO);
            }

            public void doAfterAllAnalysed(AnalysisContext analysisContext) {
                System.out.println("数据读取完毕");
            }
        }).doRead();
        for (DataDemoVO excelData : list) {
            System.out.println("--->" + excelData);
        }
    }

封装（让代码更可用）

/**
 * @author: lpy
 * @Date: 2023/01/12
 */

@Slf4j
public class ExcelUtils {
    /**
     * Excel模板
     *
     * 名字   | 日期  | 年龄
     * name  | 2023 | 13
     * name2 | 2024 | 15
     * name3 | 2025 | 16
     *
     * 实体类配合注解 @ExcelProperty("字符串标题")
     *
     * url: https://easyexcel.opensource.alibaba.com/docs/current/quickstart/read
     */
    /**
     * file 前端传过来的文件流
     * clazz 要转换的实体类类型
     */
    public static <T> List<T> importExcel(MultipartFile file, Class<T> clazz) {
        T t = null;
        final List<T> list = new LinkedList<T>();
        try {
            t = clazz.newInstance();
            EasyExcel.read(file.getInputStream())
                    .head(clazz)
                    .sheet().registerReadListener(new AnalysisEventListener<T>() {
                @Override
                public void invoke(T t, AnalysisContext analysisContext) {
                    list.add(t);
                }

                @Override
                public void doAfterAllAnalysed(AnalysisContext analysisContext) {
                    log.info("{} 数据读取完毕", file.getOriginalFilename());
                }
            }).doRead();
            return list;
        } catch (Exception e) {
            e.printStackTrace();
            return new LinkedList<T>();
        }
    }


// 或者
    public static <T> List<T> importExcel2(MultipartFile file, Class<T> clazz) {
        T t = null;
        final List<T> list = new LinkedList<T>();
        try {
            t = clazz.newInstance();
            EasyExcel.read(file.getInputStream(),
                    new ReadListener<T>() {
                @Override
                public void invoke(T t, AnalysisContext analysisContext) {
                    list.add(t);
                }

                @Override
                public void doAfterAllAnalysed(AnalysisContext analysisContext) {
                    log.info("{} 数据读取完毕", file.getOriginalFilename());
                }
            }).sheet().doRead();
            return list;
        } catch (Exception e) {
            e.printStackTrace();
            return new LinkedList<T>();
        }
    }
}

Exception

如果报错com.alibaba.excel.exception.ExcelAnalysisException: java.lang.NoSuchMethodError那就是poi版本依赖问题，解决一下依赖，或者删除掉之前的poi