EasyExcel示例（阿里巴巴）基于Maven

首先感谢阿里巴巴提供了easyexcel工具类，github地址：https://github.com/alibaba/easyexcel

注意！！这里只是一个简单的示例，VC大法即可使用，对于复杂的execl导出可能会出现问题。

另Execl文件后缀为xlsx。

　　1、环境搭建

　　　　jar包依赖

 <!-- excel导入导出插件 -->
 <dependency>
     <groupId>com.alibaba</groupId>
     <artifactId>easyexcel</artifactId>
     <version>1.1.2-beat1</version>
 </dependency>

　　　　2、代码

public class MyExcel {
    //读
    @Test
    public void simpleRead() {
        FileInputStream fileInput;
        try {
            fileInput = new FileInputStream("F://javaio文件目录//hss.xlsx");
            List<Object> read = EasyExcelFactory.read(fileInput, new Sheet(0,0));
            System.out.println(read);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        
    }
    //写
    @Test
    public void simpleWrite() {
        FileOutputStream fileOut;
        try {
            File file = new File("F://javaio文件目录//hss123.xlsx");
            if (file.exists()) {
                file.delete();
            }
            fileOut=new FileOutputStream("F://javaio文件目录//hss123.xlsx");
            ExcelWriter writer = EasyExcelFactory.getWriter(fileOut);
            Sheet sheet = new Sheet(1,0);
            Sheet sheet2 = new Sheet(1,0);
            sheet.setSheetName("HelloWord");
            List<List<String>> data2 = new ArrayList<>();
            List<String> list2 = new ArrayList<>();
            List<String> list3 = new ArrayList<>();
            List<String> list4 = new ArrayList<>();
            List<String> list5 = new ArrayList<>();
            List<List<String>> data = new ArrayList<>();
            List<String> list1 = new ArrayList<>();
            for (int i = 0; i < 10; i++) {
                list1.add("123");
                list1.add("123");
                list1.add("123");
                list1.add("123");
                list1.add("123");
                data.add(list1);
            }
                list2.add("你好1");
                list3.add("你好2");
                list4.add("你好3");
                list5.add("你好4");
                data2.add(list2);
                data2.add(list3);
                data2.add(list4);
                data2.add(list5);
            sheet2.setHead(data2);
            writer.write0(null, sheet2);
            writer.write0(data, sheet);
            writer.finish();
            fileOut.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}