- Upload 上传
- 点击上传
- 用户头像上传
- 照片墙
- 图片列表缩略图
- 上传文件列表控制
- 拖拽上传
- 手动上传
- Attribute
- Slot
- Methods
Upload 上传
通过点击或者拖拽上传文件
点击上传

通过 slot 你可以传入自定义的上传按钮类型和文字提示。可通过设置limit和on-exceed来限制上传文件的个数和定义超出限制时的行为。可通过设置before-remove来阻止文件移除操作。
<el-upload class="upload-demo" action="https://jsonplaceholder.typicode.com/posts/" :on-preview="handlePreview" :on-remove="handleRemove" :before-remove="beforeRemove" multiple :limit="3" :on-exceed="handleExceed" :file-list="fileList"> <el-button size="small" type="primary">点击上传</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><script> export default { data() { return { fileList: [{name: 'food.jpeg', url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100'}, {name: 'food2.jpeg', url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100'}] }; }, methods: { handleRemove(file, fileList) { console.log(file, fileList); }, handlePreview(file) { console.log(file); }, handleExceed(files, fileList) { this.$message.warning(`当前限制选择 3 个文件,本次选择了 ${files.length} 个文件,共选择了 ${files.length + fileList.length} 个文件`); }, beforeRemove(file, fileList) { return this.$confirm(`确定移除 ${ file.name }?`); } } }</script>
用户头像上传
使用 before-upload 限制用户上传的图片格式和大小。

<el-upload class="avatar-uploader" action="https://jsonplaceholder.typicode.com/posts/" :show-file-list="false" :on-success="handleAvatarSuccess" :before-upload="beforeAvatarUpload"> <img v-if="imageUrl" :src="imageUrl" class="avatar"> <i v-else class="el-icon-plus avatar-uploader-icon"></i></el-upload><style> .avatar-uploader .el-upload { border: 1px dashed #d9d9d9; border-radius: 6px; cursor: pointer; position: relative; overflow: hidden; } .avatar-uploader .el-upload:hover { border-color: #409EFF; } .avatar-uploader-icon { font-size: 28px; color: #8c939d; width: 178px; height: 178px; line-height: 178px; text-align: center; } .avatar { width: 178px; height: 178px; display: block; }</style><script> export default { data() { return { imageUrl: '' }; }, methods: { handleAvatarSuccess(res, file) { this.imageUrl = URL.createObjectURL(file.raw); }, beforeAvatarUpload(file) { const isJPG = file.type === 'image/jpeg'; const isLt2M = file.size / 1024 / 1024 < 2; if (!isJPG) { this.$message.error('上传头像图片只能是 JPG 格式!'); } if (!isLt2M) { this.$message.error('上传头像图片大小不能超过 2MB!'); } return isJPG && isLt2M; } } }</script>
显示代码
照片墙
使用 list-type 属性来设置文件列表的样式。

<el-upload action="https://jsonplaceholder.typicode.com/posts/" list-type="picture-card" :on-preview="handlePictureCardPreview" :on-remove="handleRemove"> <i class="el-icon-plus"></i></el-upload><el-dialog :visible.sync="dialogVisible"> <img width="100%" :src="dialogImageUrl" alt=""></el-dialog><script> export default { data() { return { dialogImageUrl: '', dialogVisible: false }; }, methods: { handleRemove(file, fileList) { console.log(file, fileList); }, handlePictureCardPreview(file) { this.dialogImageUrl = file.url; this.dialogVisible = true; } } }</script>
图片列表缩略图

<el-upload class="upload-demo" action="https://jsonplaceholder.typicode.com/posts/" :on-preview="handlePreview" :on-remove="handleRemove" :file-list="fileList2" list-type="picture"> <el-button size="small" type="primary">点击上传</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><script> export default { data() { return { fileList2: [{name: 'food.jpeg', url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100'}, {name: 'food2.jpeg', url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100'}] }; }, methods: { handleRemove(file, fileList) { console.log(file, fileList); }, handlePreview(file) { console.log(file); } } }</script>
上传文件列表控制
通过 on-change 钩子函数来对列表进行控制

<el-upload class="upload-demo" action="https://jsonplaceholder.typicode.com/posts/" :on-change="handleChange" :file-list="fileList3"> <el-button size="small" type="primary">点击上传</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><script> export default { data() { return { fileList3: [{ name: 'food.jpeg', url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100' }, { name: 'food2.jpeg', url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100' }] }; }, methods: { handleChange(file, fileList) { this.fileList3 = fileList.slice(-3); } } }</script>
拖拽上传

<el-upload class="upload-demo" drag action="https://jsonplaceholder.typicode.com/posts/" multiple> <i class="el-icon-upload"></i> <div class="el-upload__text">将文件拖到此处,或<em>点击上传</em></div> <div class="el-upload__tip" slot="tip">只能上传jpg/png文件,且不超过500kb</div></el-upload>
手动上传

<el-upload class="upload-demo" ref="upload" action="https://jsonplaceholder.typicode.com/posts/" :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><script> export default { data() { return { fileList: [{name: 'food.jpeg', url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100'}, {name: 'food2.jpeg', url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100'}] }; }, methods: { submitUpload() { this.$refs.upload.submit(); }, handleRemove(file, fileList) { console.log(file, fileList); }, handlePreview(file) { console.log(file); } } }</script>
Attribute
| 参数 | 说明 | 类型 | 可选值 | 默认值 |
|---|---|---|---|---|
| action | 必选参数,上传的地址 | string | — | — |
| headers | 设置上传的请求头部 | object | — | — |
| multiple | 是否支持多选文件 | boolean | — | — |
| data | 上传时附带的额外参数 | object | — | — |
| name | 上传的文件字段名 | string | — | file |
| with-credentials | 支持发送 cookie 凭证信息 | boolean | — | false |
| show-file-list | 是否显示已上传文件列表 | boolean | — | true |
| drag | 是否启用拖拽上传 | boolean | — | false |
| accept | 接受上传的文件类型(thumbnail-mode 模式下此参数无效) | string | — | — |
| on-preview | 点击文件列表中已上传的文件时的钩子 | function(file) | — | — |
| on-remove | 文件列表移除文件时的钩子 | function(file, fileList) | — | — |
| on-success | 文件上传成功时的钩子 | function(response, file, fileList) | — | — |
| on-error | 文件上传失败时的钩子 | function(err, file, fileList) | — | — |
| on-progress | 文件上传时的钩子 | function(event, file, fileList) | — | — |
| on-change | 文件状态改变时的钩子,添加文件、上传成功和上传失败时都会被调用 | function(file, fileList) | — | — |
| before-upload | 上传文件之前的钩子,参数为上传的文件,若返回 false 或者返回 Promise 且被 reject,则停止上传。 | function(file) | — | — |
| before-remove | 删除文件之前的钩子,参数为上传的文件和文件列表,若返回 false 或者返回 Promise 且被 reject,则停止上传。 | function(file, fileList) | — | — |
| list-type | 文件列表的类型 | string | text/picture/picture-card | text |
| auto-upload | 是否在选取文件后立即进行上传 | boolean | — | true |
| file-list | 上传的文件列表, 例如: [{name: 'food.jpg', url: 'https://xxx.cdn.com/xxx.jpg'}] | array | — | [] |
| http-request | 覆盖默认的上传行为,可以自定义上传的实现 | function | — | — |
| disabled | 是否禁用 | boolean | — | false |
| limit | 最大允许上传个数 | number | — | — |
| on-exceed | 文件超出个数限制时的钩子 | function(files, fileList) | — | - |
Slot
| name | 说明 |
|---|---|
| trigger | 触发文件选择框的内容 |
| tip | 提示说明文字 |
Methods
| 方法名 | 说明 | 参数 |
|---|---|---|
| clearFiles | 清空已上传的文件列表(该方法不支持在 before-upload 中调用) | — |
| abort | 取消上传请求 | ( file: fileList 中的 file 对象 ) |
原文: http://element-cn.eleme.io/#/zh-CN/component/upload
