SpringBoot+Vue+Element+FastDFS实现图片的上传功能

添加Maven依赖

<dependency>
    <groupId>com.github.tobatogroupId>
    <artifactId>fastdfs-clientartifactId>
    <version>1.26.2version>
dependency>

编写配置文件

server:
  port: 9009
spring:
  application:
    name: springBoot-upload
  servlet:
    multipart:
      max-file-size: 5MB # 限制文件上传的大小
fdfs:
  so-timeout: 1501 # 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）
    - 192.168.206.140:22122

编写上传的service

@Service
public class UploadService {

    private static final Logger LOGGER = LoggerFactory.getLogger(UploadService.class);

    private static final List<String> CONTENT_TYPES = Arrays.asList("image/jpeg", "image/gif","image/png");

    @Autowired
    private FastFileStorageClient storageClient;


    public String upload(MultipartFile file) {
        //获取文件名称
        String originalFilename = file.getOriginalFilename();
        //校检文件的类型
        String contentType = file.getContentType();
        if (!CONTENT_TYPES.contains(contentType)){
            LOGGER.info("文件类型不合法:{}",originalFilename);
            return null;
        }
        try {
            // 校验文件的内容
            BufferedImage bufferedImage = ImageIO.read(file.getInputStream());
            if (bufferedImage == null){
                LOGGER.info("文件内容不合法：{}", originalFilename);
                return null;
            }

            // 保存到服务器
            //file.transferTo(new File("D:\\upload\\images\\" + originalFilename));
            String ext = StringUtils.substringAfterLast(originalFilename, ".");
            StorePath storePath = this.storageClient.uploadFile(file.getInputStream(), file.getSize(), ext, null);

            // 生成url地址，返回
            //return "http://127.0.0.1/" + originalFilename;
            return "http://192.168.206.140/" + storePath.getFullPath();
        } catch (IOException e) {
            LOGGER.info("服务器内部错误：{}", originalFilename);
            e.printStackTrace();
        }
        return null;
    }
}

编写Controller

@RestController
@RequestMapping("/upload")
@CrossOrigin
public class UploadController {

    @Autowired
    private UploadService uploadService;

    @PostMapping("/image")
    public Result uploadImage(@RequestParam("file") MultipartFile file){
        String url = this.uploadService.upload(file);
        if (StringUtils.isBlank(url)) {
            return new Result(true, StatusCode.OK,"上传失败");
        }
        return new Result(true, StatusCode.OK,"上传成功",url);
    }
}

编写前端部分

前端使用了Vue加上ElementUI框架

<div>
        <el-upload :action="uploadURL" list-type="picture"  :on-preview="handlePreview" multiple>
            <el-button size="small" type="primary">点击上传el-button>
        el-upload>
        <el-dialog :visible.sync="previewVisible" title="图片预览">
            <img :src="previewPath" alt="" class="previewImg">
        el-dialog>
    div>

图片预览的逻辑

// 处理图片预览效果
handlePreview(file) {
console.log(file)
this.previewPath = file.response.data
this.previewVisible = true
},

测试

运行地址：http://localhost:8080/upload

界面

上传

可以一次上传多张图片，点击图片的名字还可以查看预览

前端代码地址:https://gitee.com/mytimelife/fastdfs_vue.git

注：图片来源网络，侵权，联系删除