leyou_06_图片上传至FastDFS

1.推荐一个开源的FastDFS客户端，支持最新的SpringBoot2.0。配置使用极为简单，支持连接池，支持自动生成缩略图

　　1.1 在文件上传的微服务中 引入依赖

<dependency>
    <groupId>com.github.tobato</groupId>
    <artifactId>fastdfs-client</artifactId>
    <version>1.26.2</version>
</dependency>

　　

　　1.2引入配置启动类

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

　　

　　1.3配置Fast的属性

fdfs:
  so-timeout: 1501
  connect-timeout: 601
  thumb-image: # 缩略图
     60
    height: 60
  tracker-list: # tracker地址
    - 192.168.56.101:22122

　　

　　1.4测试（测试的包名要和java中的包名一致哦）

@RunWith(SpringRunner.class)
@SpringBootTest
public class FdfsTest {

    @Autowired
    private FastFileStorageClient storageClient;

    @Autowired
    private ThumbImageConfig thumbImageConfig;

    @Test
    public void testUpload() throws FileNotFoundException {
        File file = new File("D:\test\baby.png");
        // 上传并且生成缩略图
        StorePath storePath = this.storageClient.uploadFile(
                new FileInputStream(file), file.length(), "png", null);
        // 带分组的路径
        System.out.println(storePath.getFullPath());
        // 不带分组的路径
        System.out.println(storePath.getPath());
    }

    @Test
    public void testUploadAndCreateThumb() throws FileNotFoundException {
        File file = new File("D:\test\baby.png");
        // 上传并且生成缩略图
        StorePath storePath = this.storageClient.uploadImageAndCrtThumbImage(
                new FileInputStream(file), file.length(), "png", null);
        // 带分组的路径
        System.out.println(storePath.getFullPath());
        // 不带分组的路径
        System.out.println(storePath.getPath());
        // 获取缩略图路径
        String path = thumbImageConfig.getThumbImagePath(storePath.getPath());
        System.out.println(path);
    }
}

　　配置上传文件大小的限制

#配置最大上传图片大小
    client_max_body_size 10m;

　　1.5测试成功

group1/M00/00/00/wKg4ZVro5eCAZEMVABfYcN8vzII630.png
M00/00/00/wKg4ZVro5eCAZEMVABfYcN8vzII630.png
M00/00/00/wKg4ZVro5eCAZEMVABfYcN8vzII630_60x60.png

2.修改文件上传Service

@Service
@Slf4j
//获得配置文件类
@EnableConfigurationProperties(UploadProperties.class)
public class UploadService {

    @Autowired
    private UploadProperties properties;
    @Autowired
    private FastFileStorageClient storageClient;
    //private static  final List<String> ALLOW_TYPES= Arrays.asList("image/jpeg","image/png");
    public String uploadImg(MultipartFile file) {
        try {
            //检验文件的类型 防止恶意文件
            String contentType = file.getContentType();
            if (!properties.getAllowTypes().contains(contentType)){
                throw  new LyException(ExceptionEnum.INVALID_FILE_TYPE);
            };
            //校验文件的内容
            BufferedImage image = ImageIO.read(file.getInputStream());
            if (image==null){
                throw  new LyException(ExceptionEnum.INVALID_FILE_TYPE);
            }
            //保存文件到本地
            //File local = new File("F:\javaee\IdeaResource\uploadImg\",file.getOriginalFilename());
            // file.transferTo(local);

            String suffix= StringUtils.substringAfterLast(file.getOriginalFilename(),".");
            StorePath storePath = storageClient.uploadFile(file.getInputStream(), file.getSize(), suffix, null);

            //返回文件地址
            return properties.getBaseUrl()+storePath.getFullPath();
        } catch (IOException e) {
            log.error("[文件上传] 上传文件失败",e);
            throw  new LyException(ExceptionEnum.UPLOAD_FILE_ERROR);
        }
    }
}

　　2.1配置文件类从 application.yaml中读取参数

@Data
//加载带有ly.upload前缀的配置文件属性
@ConfigurationProperties(prefix = "ly.upload")
public class UploadProperties {

    private  String baseUrl;
    private List<String> allowTypes;
}

　　2.2配置文件application.yaml

server:
  port: 8082
  servlet:
    session:
      cookie:
        http-only:
spring:
  application:
    name: upload-service
  servlet:
    multipart:
    #最大上传文件
      max-file-size: 5MB
    #每次请求上传文件总和最大限制
      max-request-size: 10MB
eureka:
  client:
    service-url:
      defaultZone: http://127.0.0.1:10086/eureka
  instance:
    ip-address: 127.0.0.1
    prefer-ip-address: true

fdfs:
  so-timeout: 2500
  connect-timeout: 600
  thumb-image: # 缩略图
     60
    height: 60
  tracker-list: # tracker地址
     - 192.168.98.128:22122

ly:
  upload:
    baseUrl: http://image.leyou.com/
    allowTypes:
      - image/jpeg
      - image/png
      - image/bmp

　　2.3会被读取到配置文件类中去

ly:
  upload:
    baseUrl: http://image.leyou.com/
    allowTypes:
      - image/jpeg
      - image/png
      - image/bmp

测试成功