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我在用 element plus的el-upload组件上传1个图片，el-image组件显示图片的过程中，碰到了图片上传第二次时，无法执行上传替换前一个文件，然后又碰到无法执行 http-request 的问题。具体解决代码如下。

2个组件的定义代码如下：

<el-col :xs="24" :sm="12" :md="12" :lg="24" :xl="24" class="mb20"><el-form-item label="参考图" prop="image"><el-upload ref="myupload":show-file-list="true" :http-request="uploadAttachmentHandle" :limit="1" :on-exceed="handleExceed"	:auto-upload="true"						 ><el-button type="primary">上传</el-button></el-upload><el-imagev-model="imageContainer.imgeurl" style="width: 100px; height: 100px":src="imageContainer.imgeurl":zoom-rate="1.2":max-scale="7":min-scale="0.2":preview-src-list="imageContainer.imgeurl"show-progress:initial-index="4"fit="cover"/><!-- :preview-src-list="imgeurl" --></el-form-item></el-col>

业务函数部分如下：

import { UploadRequestOptions,genFileId } from "element-plus";  
import type { UploadInstance, UploadProps, UploadRawFile } from 'element-plus';//文件上传替换前一个文件
//:limit="1" 属性和 :on-exceed="handleExceed" 配合使用 ，每次替换旧图。 注意limit是1
const myupload = ref<UploadInstance>();  //myupload 必须和 el-upload 组件的ref属性名同名
const handleExceed: UploadProps['onExceed'] = (files) => {//下面这两行不能在这里执行，执行了就会影响 :http-request="uploadAttachmentHandle" 的接口请 //求执行。要放到下面的函数中最后执行// if(myupload.value!=undefined) // 	myupload.value!.clearFiles(); const file = files[0] as UploadRawFile;file.uid = genFileId();myupload.value!.handleStart(file); }const uploadAttachmentHandle = async (options: UploadRequestOptions) => {const res = await cbbjMaterialApi.uploadAttachment(options);state.ruleForm.image = res.data.result?.id;imageContainer.imgeurl=res.data.result?.url;if(myupload.value!=undefined) myupload.value!.clearFiles(); 
};