阿里的Easyexcel读取Excel文件的方法(最新版本)

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>easyexcel</artifactId>
            <version>2.0.5</version>
        </dependency>

    
    private static class StringExcelListener extends AnalysisEventListener {

        
        private List<List<String>> datas = new ArrayList<>();

        
        @Override
        public void invoke(Object object, AnalysisContext context) {
            @SuppressWarnings("unchecked") Map<String, String> stringMap = (HashMap<String, String>) object;
            //数据存储到list，供批量处理，或后续自己业务逻辑处理。
            datas.add(new ArrayList<>(stringMap.values()));
            //根据自己业务做处理
        }

        @Override
        public void doAfterAllAnalysed(AnalysisContext context) {
            //解析结束销毁不用的资源
            //注意不要调用datas.clear(),否则getDatas为null
        }

        
        public List<List<String>> getDatas() {
            return datas;
        }

        
        public void setDatas(List<List<String>> datas) {
            this.datas = datas;
        }
    }

    
    public List<List<String>> writeWithoutHead(InputStream inputStream) {
        StringExcelListener listener = new StringExcelListener();
        ExcelReader excelReader = EasyExcelFactory.read(inputStream, null, listener).headRowNumber(0).build();
        excelReader.read();
        List<List<String>> datas = listener.getDatas();
        excelReader.finish();
        return datas;
    }

import com.hiido.services.common.ExcelOptionsService;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.List;


@RunWith(SpringRunner.class)
@SpringBootTest
public class ExcelOptionsServiceTest {

    @Autowired
    private ExcelOptionsService excelOptionsService;

    
    @Test
    public void testReadExcel() {
        // 这里的excel文件可以 为xls或xlsx结尾
        File file = new File("C:\\Users\\Administrator\\Desktop\\测试.xls");
        List<List<String>> result = new ArrayList<>();
        try {
            result = excelOptionsService.writeWithoutHead(new FileInputStream(file));
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        Assert.assertNotNull(result);
        System.out.println("读取结果：" + result);
    }
}

import com.alibaba.excel.EasyExcelFactory;
import com.alibaba.excel.ExcelReader;
import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import org.springframework.stereotype.Service;

import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


@Service
public class ExcelOptionsService {

    
    public List<List<String>> writeWithoutHead(InputStream inputStream) {
        StringExcelListener listener = new StringExcelListener();
        ExcelReader excelReader = EasyExcelFactory.read(inputStream, null, listener).headRowNumber(0).build();
        excelReader.read();
        List<List<String>> datas = listener.getDatas();
        excelReader.finish();
        return datas;
    }

    
    private static class StringExcelListener extends AnalysisEventListener {

        
        private List<List<String>> datas = new ArrayList<>();

        
        @Override
        public void invoke(Object object, AnalysisContext context) {
            @SuppressWarnings("unchecked") Map<String, String> stringMap = (HashMap<String, String>) object;
            // 这里可以获取excel的基本信息，包含excel的总行数
            System.out.println("不一定十分准确的总行数："+context.getTotalCount());
            //数据存储到list，供批量处理，或后续自己业务逻辑处理。
            datas.add(new ArrayList<>(stringMap.values()));
            //根据自己业务做处理
        }

        @Override
        public void doAfterAllAnalysed(AnalysisContext context) {
            //解析结束销毁不用的资源
            //注意不要调用datas.clear(),否则getDatas为null
        }

        
        public List<List<String>> getDatas() {
            return datas;
        }

        
        public void setDatas(List<List<String>> datas) {
            this.datas = datas;
        }
    }
}