对EasyExcel写出流进行压缩

使用Java的ZipOutputStream类可以将流进行压缩。具体操作如下：

1. 创建ZipOutputStream对象，并将其绑定到压缩输出流上。

ZipOutputStream zipOut = new ZipOutputStream(outputStream);

2. 将EasyExcel的输出流通过ZipEntry对象添加到ZipOutputStream中。

ZipEntry zipEntry = new ZipEntry("filename.xlsx");
zipOut.putNextEntry(zipEntry);
excelWriter.write(data, sheet);
excelWriter.finish();

3. 关闭ZipOutputStream。

zipOut.close();

完整代码如下：

public void compressExcel(List<MyData> data, OutputStream outputStream) {
    try {
        ExcelWriter excelWriter = EasyExcel.write(outputStream).build();
        Sheet sheet = new Sheet(1, 0, MyData.class);
        ZipOutputStream zipOut = new ZipOutputStream(outputStream);
        ZipEntry zipEntry = new ZipEntry("filename.xlsx");
        zipOut.putNextEntry(zipEntry);
        excelWriter.write(data, sheet);
        excelWriter.finish();
        zipOut.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}