阿里EasyExcel使用

报错一:使用EasyExcel解析表格时报错ExcelAnalysisException: File type error，io must be available markSupported

https://blog.csdn.net/qq_42910468/article/details/103574522

InputStream inputStream = new BufferedInputStream(new FileInputStream(fileUrl));

　　

开发

        <!-- 阿里开源EXCEL -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>easyexcel</artifactId>
            <version>2.1.6</version>
        </dependency>

package com.power.manager;

import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.power.manager.dto.WeekPowerLineLossExcelDto;
import org.junit.Test;

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

public class EasyExcelTest {

    @Test
    public void importExcel() throws FileNotFoundException {
        String url = "E:\test\test\202002\2002xiansun.xls";
        InputStream is = new BufferedInputStream(new FileInputStream(url));

        final int CAPACITY = 5000;
        List<WeekPowerLineLossExcelDto> list = new ArrayList<>(CAPACITY);

        System.out.println("开始");
        EasyExcel.read(is, WeekPowerLineLossExcelDto.class, new AnalysisEventListener<WeekPowerLineLossExcelDto>() {

            @Override
            public void invoke(WeekPowerLineLossExcelDto dto, AnalysisContext analysisContext) {
                list.add(dto);
                if(list.size() >= CAPACITY){
                    System.out.println(list.size());
                    list.clear();
                }
            }

            @Override
            public void doAfterAllAnalysed(AnalysisContext analysisContext) {
                System.out.println("最终剩余:" + list.size());
                list.clear();//解析结束销毁不用的资源
            }
        }).sheet().doRead();
        System.out.println("结束");
    }
}

package com.power.manager.dto;

import com.alibaba.excel.annotation.ExcelProperty;
import lombok.Data;

/**
 * 参考:https://juejin.im/post/5dae4fdd51882554c07585d1
 * 导入
 */
@Data
public class WeekPowerLineLossExcelDto {
    //序号
    @ExcelProperty(index = 0)
    private Integer num;

    @ExcelProperty(index = 1)
    private String countDate;   

    @ExcelProperty(index = 2)
    private String powerSupplyCompanyName; 

}

运行结果:

开始

5000
5000
5000
最终剩余:1308
结束