SpringBoot上传文件-优快云博客

本文详细介绍了使用SpringBoot进行文件上传的过程，包括配置文件上传大小限制、临时文件路径及处理上传过程中可能出现的问题。

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Springboot 文件上传

项目告一段落，整理一下项目中踩过的坑，引以为戒。
SpringBoot上传文件踩过的坑…

public class UploadFileRest {

private static Logger logger = LoggerFactory.getLogger(UploadFileRest.class);
@Value("${upload.server}")
private String server;
@Value("${upload.port}")
private String port;
@Value("${getImage.port}")
private String getImagePort;
@Value("${upload.savePath}")
private String savePath;

@PostMapping(value = "uploadFile")
public  FileVO uploadFile(HttpServletRequest request) throws IllegalStateException, IOException {

    System.out.println("upload...");

    //生成当前时分秒
    try {
        MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
        // 获取上传的文件
        MultipartFile multiFile = multipartRequest.getFile("file");
        
		FileVO fileVO =null;
        //获取上传的全名
        String originalFilename = multiFile.getOriginalFilename();
        String suffix = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);
        String subPath = DateUtils.getDate();
        String fileName = DateUtils.getDate("yyMMddHHmmssSSS" + (new Random()).nextInt(9)) + "." + suffix;
        //String finalPath = path + subPath;

        File file = new File(savePath + "/files/" + subPath + "/");
        if (!file.exists()) {
            file.mkdirs();
        }
        multiFile.transferTo(new File(savePath + "/files/" + subPath + "/" + fileName));
        String imgUrl = server +":"+getImagePort+ "/files/" + subPath + "/" + fileName;

         fileVO = new FileVO();
        fileVO.setOriginalFilename(originalFilename);
        fileVO.setSize(multiFile.getSize());
        fileVO.setSuffix(suffix);
        fileVO.setFileUrl(imgUrl);
        System.out.println("--------------------:" + imgUrl);
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
        System.out.println("上传失败!");
    }
    return fileVO;
}

}

在启动类配置Bean

设置上传图片临时文件
设置上传的图片的大小
/**

文件上传配置
@return
*/
@Bean
public MultipartConfigElement multipartConfigElement() {
MultipartConfigFactory factory = new MultipartConfigFactory();
factory.setMaxFileSize(“10MB”);
factory.setMaxRequestSize(“50MB”);
factory.setLocation("/home/tmp");
return factory.createMultipartConfig();
}