SpringBoot 获取文件方式

介绍

  用于在 SpringBoot 项目中，读取项目中的文件，如 Excel 文件等。

代码

import org.springframework.util.ClassUtils;

public class GetFile {

    public static void main(String[] args) {
        ResourceLoader resourceLoader = new DefaultResourceLoader();
        InputStream inputStream = resourceLoader.getResource("classpath:dcexcel.xlsx").getInputStream();
        String path = ClassUtils.getDefaultClassLoader().getResource("").getPath();
        log.info(path);
        InputStream inputStream = getClass().getClassLoader().getResourceAsStream("dcexcel.xlsx");
        ClassPathResource resource = new ClassPathResource("dcexcel.xlsx");
        InputStream inputStream = resource.getInputStream();
        InputStream resourceAsStream = this.getClass().getResourceAsStream("dcexcel.xlsx");
        response.setContentType("application/vnd.ms-excel");
        response.addHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode("dcexcel.xlsx", "UTF-8"));
        ServletOutputStream outputStream = response.getOutputStream();

        byte[] buffer = new byte[1024];
        int i = inputStream.read(buffer);
        while (i != -1) {
            outputStream.write(buffer, 0, i);
            i = inputStream.read(buffer);
        }
        outputStream.close();
    }

}