Use of easyexcel

<dependency>
     <groupId>com.alibaba</groupId>
     <artifactId>easyexcel</artifactId>
     <version>2.1.1</version>
 </dependency>

 <dependency>
     <groupId>org.apache.poi</groupId>
     <artifactId>poi-ooxml</artifactId>
     <version>3.17</version>
 </dependency>

 <dependency>
     <groupId>org.apache.poi</groupId>
     <artifactId>poi-ooxml-schemas</artifactId>
     <version>3.17</version>
 </dependency>

 <dependency>
     <groupId>org.apche.poi</groupId>
     <artifactId>poi</artifactId>
     <version>3.17</version>
 </dependency>

package com.example.demo.excel;

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

@Data
public class DemoData {
    
    // Set up excel Header name 
    @ExcelProperty(value = " Student number ",index = 0)
    private Integer sno;
    @ExcelProperty(value = " The student's name ",index = 1)
    private String sname;
}

package com.example.demo.excel;

import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;

import java.util.Map;

public class ExcelListener extends AnalysisEventListener<DemoData> {
    
    // Read line by line excel Content 
    @Override
    public void invoke(DemoData data, AnalysisContext analysisContext) {
    
        System.out.println("****"+data);
    }
    // Read the contents of the header 
    @Override
    public void invokeHeadMap(Map<Integer, String> headMap, AnalysisContext context) {
    
        System.out.println(" Header ："+headMap);
    }
    // After the read is complete 
    @Override
    public void doAfterAllAnalysed(AnalysisContext analysisContext) {
     }
}

package com.example.demo.excel;

import com.alibaba.excel.EasyExcel;

import java.util.ArrayList;
import java.util.List;

public class TestEasyExcel {
    

    public static void main(String[] args) {
    
        // Realization excel The operation of writing 
        //1  Set the write folder address and excel File name 
        //String filename = "D:\\write.xlsx";
        //2  call easyexcel The method inside realizes the write operation 
        //write Method two parameters ： First parameter file path name , Second parameter entity class class
        //EasyExcel.write(filename,DemoData.class).sheet(" Student list ").doWrite(getData());


        // Realization excel Read operations 
        String filename = "D:\\write.xlsx";
        EasyExcel.read(filename,DemoData.class,new ExcelListener()).sheet().doRead();
    }

    // The creation method returns list aggregate 
    private static List<DemoData> getData() {
    
        List<DemoData> list = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
    
            DemoData data = new DemoData();
            data.setSno(i);
            data.setSname("lucy"+i);
            list.add(data);
        }
        return list;
    }
}