springBoot整合easyExcel

Spring Boot整合EasyExcel可以使得我们在使用Java编程语言操作Excel文件时更加方便快捷，无需手动处理Excel的复杂格式和数据类型转换问题。下面是一个简单的示例：

1. 引入EasyExcel依赖

在pom.xml文件中添加以下依赖：

<!-- EasyExcel -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>easyexcel</artifactId>
    <version>2.2.10</version>
</dependency>

2. 创建Excel模板类

@Data
public class ExcelData {
    @ExcelProperty(value = "姓名", index = 0)
    private String name;

    @ExcelProperty(value = "年龄", index = 1)
    private Integer age;

    @ExcelProperty(value = "性别", index = 2)
    private String gender;
}

3. 编写Excel读取代码

@Service
public class ExcelService {
    public List<ExcelData> readExcel(MultipartFile file) throws IOException {
        InputStream inputStream = file.getInputStream();
        List<ExcelData> list = new ArrayList<>();
        ExcelReader reader = new ExcelReader(inputStream, ExcelTypeEnum.XLSX, null, new AnalysisEventListener<ExcelData>() {
            @Override
            public void invoke(ExcelData data, AnalysisContext context) {
                list.add(data);
            }

            @Override
            public void doAfterAllAnalysed(AnalysisContext context) {

            }
        });
        reader.read(new Sheet(1, 1, ExcelData.class));
        return list;
    }
}

4. 编写Excel导出代码

@Service
public class ExcelService {
    public void writeExcel(HttpServletResponse response, List<ExcelData> list) throws IOException {
        response.setContentType("application/vnd.ms-excel");
        response.setCharacterEncoding("utf-8");
        String fileName = URLEncoder.encode("测试文件.xlsx", "UTF-8");
        response.setHeader("Content-disposition", "attachment;filename=" + fileName);
        EasyExcel.write(response.getOutputStream(), ExcelData.class).sheet("测试").doWrite(list);
    }
}

以上就是Spring Boot整合EasyExcel的基本示例，可以根据自己的需求进行修改和扩展。