element-ui中up-load组件实现图片上传回显

<template>
  <div>
    <el-upload action="api/admin/file/uploadfoodpicture" list-type="picture-card" auto-upload="true"
      :on-success="sucuploadimg">
      <i class="el-icon-plus"></i>
    </el-upload>
    <img :src="imgUrl" alt="图" />
  </div>
</template>
<script>
export default {
  data() {
    return {
      imgUrl: ''
    };
  },
  methods: {
    sucuploadimg(res) {
      this.imgUrl = res.data;
    }
  }
}
</script>

@RestController
@RequestMapping("/admin/file")
@Slf4j
@Api(value = "文件相关接口",tags = {"文件相关接口操作接口"})
public class filecontroller {

    @PostMapping("/uploadfoodpicture")
    @ApiOperation("上传食物图片")
    public Result uploadFoodPicture(@RequestBody  MultipartFile file) throws Exception {
            //获取图片原文件名
            log.info("启动图片上传功能");
            String url= FileUtil.uploadimg(file);//将传递的图片交给FileUtil处理
            return Result.success(200,"上传图片成功",url);
    }
}

@Component
public class FileUtil {
    public static  String imgsrc = "D:\\image\\";
    public static String uploadimg(MultipartFile file) throws IOException {
        String originalFilename = file.getOriginalFilename();
        //获取原文件的后缀名
        if (originalFilename != null) {
            String fileExtension = originalFilename.substring(originalFilename.lastIndexOf("."));
            String uuid = UUID.randomUUID().toString();
            // 使用UUID和文件扩展名来创建一个新的文件名
            String newFilename = uuid + fileExtension;
            file.transferTo(new File(FileUtil.imgsrc + newFilename));
            String url ="http://localhost:8080"+"/uploadimg/" +newFilename;
            return url;
        }
        return "上传失败";
    }
}

@Configuration
@EnableWebMvc
public class MvcConfig implements WebMvcConfigurer {
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        // 配置静态资源映射
        registry.addResourceHandler("/uploadimg/**")
                .addResourceLocations("file:///"+ FileUtil.imgsrc);
    }
}