可以自定义上传方法、覆盖默认的上传行为
主要是这个属性 :http-request="uploadFn"

<template><span><el-uploadaction="#":on-preview="handlePreview":on-remove="handleRemove":before-remove="beforeRemove":on-success="handleSuccess":limit="limit":http-request="uploadFn":on-exceed="handleExceed":file-list="fileList":on-change="hanldeChange":accept="accept"><el-button size="small" type="primary">点击上传</el-button><div slot="tip" class="el-upload__tip">{{ tipText }}</div></el-upload></span>
</template><script>export default {props: {fileList: {type: Array,default: () => {}},limit: {type: Number,default: 1},tipText: {type: String,default: '请上传文件'},accept: {type: String,default: ''}},data() {return {// fileList: []};},methods: {uploadFn() {},hanldeChange(file) {//新增筛选代码this.fileList.push(file);if (file.status !== 'ready') return;this.$emit('fileSelect', file);},handleSuccess(file) {this.$emit('success', file);},handleRemove(file, fileList) {this.$emit('remove', fileList)},handlePreview(file) {console.log(file);},handleExceed(files, fileList) {this.$message.warning(`当前限制最多可选择 ${this.limit} 个文件`);},beforeRemove(file, fileList) {return this.$confirm(`确定移除 ${ file.name }？`);}}
};
</script><style lang="scss" scoped></style>