el-upload上传 能将图中name = file 改成name=content

Question

<el-upload                  class="upload-demo"                  ref="upload"                  action="http://localhost:8090/opus/add"                  :data="mage"                  :on-exceed="handleExceed"                  :on-preview="handlePreview"                  :on-remove="handleRemove"                  :file-list="fileList"                  :auto-upload="false">              <el-button slot="trigger" size="small" type="primary">选取文件</el-button>              <el-button style="margin-left: 10px;" size="small" type="success" @click="submitUpload">上传到服务器</el-button>              <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>          </el-upload>