ImageUpload 文件上传组件

     <el-form-item  prop = "targetImg">
          <ImageUpload v-model="form.targetImg" placeholder="请输入目标图片" />   
     </el-form-item>

效果

ImagePreview 图片预览组件

   <el-table-column label="目标图片" prop="targetImg" >
        <template  slot-scope="scope" width="90">
          <!-- <img style="width:80px;height:80px;border:none;" :src="uploadImgUrl+scope.row.targetImg"> -->
          <ImagePreview style="width:80px;height:80px;border:none;" :src="scope.row.targetImg" />
        </template>
      </el-table-column>

当然用这两个组件之前先看看有没有这两个工具包 如果没有的话去若依gittee去找 当然记得去main.js配置一下
https://gitee.com/y_project/RuoYi-Vue/tree/master/ruoyi-ui