SpringBoot项目POI实现导入导出 POI的版本为4.0.0

(这里写自定义目录标题)SpringBoot项目POI实现Excel表格的导入导出

POI的版本为4.0.0，网上查的资料大多都是POI3.12版本的，查了好多4.0.0版本的单元格样式，整理了一下。代码如下
pom.xml注入依赖

        <groupId>org.apache.poi</groupId>
        <artifactId>poi</artifactId>
        <version>4.0.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.poi</groupId>
        <artifactId>poi-ooxml</artifactId>
        <version>4.0.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.poi</groupId>
        <artifactId>poi-scratchpad</artifactId>
        <version>4.0.0</version>
    </dependency>

控制层导出代码
@RequestMapping(value = “/export”)
@ResponseBody
public void export(HttpServletResponse response) throws IOException {
List user =UserService.selectUser();

 HSSFWorkbook wb = new HSSFWorkbook();
 HSSFSheet