FastDFS整合Springboot

1.首先在linux下安装好FastDFS, 安装步骤：https://www.cnblogs.com/handsomeye/p/9451568.html

2.引入FastDFS的依赖，在pom.xml引入：

<!--FastDFS客户端-->
<dependency>
    <groupId>com.github.tobato</groupId>
    <artifactId>fastdfs-client</artifactId>
    <version>1.26.1-RELEASE</version>
</dependency>

3.配置application.yml文件

server:
  port: 8082
spring:
  application:
    name: upload-service
  servlet:
    multipart:
      max-file-size: 100MB
fdfs:
  so-timeout: 1501 # 读取超时时间
  connect-timeout: 601 # 连接超时时间
  thumb-image: # 缩略图
    width: 60
    height: 60
  tracker-list: # tracker地址：你的虚拟机服务器地址+端口（默认是22122）
    - 120.53.27.229:22122

4.将Fdfs配置引入项目

将FastDFS-Client客户端引入本地化项目的方式非常简单，在SpringBoot项目/src/[com.xxx.主目录]/conf当中配置

@Configuration
@Import(FdfsClientConfig.class)
// 解决jmx重复注册bean的问题
@EnableMBeanExport(registration = RegistrationPolicy.IGNORE_EXISTING)
public class FastClientImporter {
    
}

5.将文件上传的工具类引入到service包下

@Service
public class UploadService {

    private static final List<String> CONTENT_TYPES = Arrays.asList("image/gif","image/jpeg");
    private static final Logger logger = LoggerFactory.getLogger(UploadService.class);
    @Autowired
    private FastFileStorageClient fastFileStorageClient;

    public String uploadImage(MultipartFile file) {

        String originalFilename = file.getOriginalFilename();
        //校验文件类型
        String contentType = file.getContentType();
        if(!CONTENT_TYPES.contains(contentType)){
            logger.info("文件类型不合法: {}",originalFilename);
            return null;
        }
        try {
            //校验文件内容
            BufferedImage bufferedImage = ImageIO.read(file.getInputStream());
            if(bufferedImage == null){
                logger.info("文件内容不合法: {}", originalFilename);
                return null;
            }

            //保存到FastDfS服务器
            String suffix = StringUtils.substringAfterLast(originalFilename, ".");
            StorePath storePath = this.fastFileStorageClient.uploadFile(file.getInputStream(), file.getSize(), suffix, null);

            return "http://120.53.27.229/"+storePath.getFullPath();
        } catch (IOException e) {
            logger.info("服务器内部错误：" + originalFilename);
            e.printStackTrace();
        }
        return null;
    }
}

6.在controller包下写一个文件上传的方法

@Controller
@RequestMapping("upload")
public class UploadController {

    @Autowired
    private UploadService uploadService;

    @PostMapping("image")
    public String uploadImage(@RequestParam("file")MultipartFile file){
        String url = this.uploadService.uploadImage(file);
        if(StringUtils.isEmpty(url)){
            // 请求参数不合法
            System.out.println("请求参数不合法");
        }
        // 上传成功
        System.out.println("图片路径："+ url);
    }
}