Upload 上傳

時間  2019-11-17
標籤 upload 上傳 简体版
原文   原文鏈接

經過點擊或者拖拽上傳文件web

點擊上傳

經過 slot 你能夠傳入自定義的上傳按鈕類型和文字提示。可經過設置limit和on-exceed來限制上傳文件的個數和定義超出限制時的行爲。可經過設置before-remove來阻止文件移除操做。json

 1 <el-upload
 2   class="upload-demo"
 3   action="https://jsonplaceholder.typicode.com/posts/"
 4   :on-preview="handlePreview"
 5   :on-remove="handleRemove"
 6   :before-remove="beforeRemove"
 7   multiple
 8   :limit="3"
 9   :on-exceed="handleExceed"
10   :file-list="fileList">
11   <el-button size="small" type="primary">點擊上傳</el-button>
12   <div slot="tip" class="el-upload__tip">只能上傳jpg/png文件，且不超過500kb</div>
13 </el-upload>
14 <script>
15   export default {
16     data() {
17       return {
18         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'}]
19       };
20     },
21     methods: {
22       handleRemove(file, fileList) {
23         console.log(file, fileList);
24       },
25       handlePreview(file) {
26         console.log(file);
27       },
28       handleExceed(files, fileList) {
29         this.$message.warning(`當前限制選擇 3 個文件，本次選擇了 ${files.length} 個文件，共選擇了 ${files.length + fileList.length} 個文件`);
30       },
31       beforeRemove(file, fileList) {
32         return this.$confirm(`肯定移除 ${ file.name }？`);
33       }
34     }
35   }
36 </script>
View Code

用戶頭像上傳

使用 before-upload 限制用戶上傳的圖片格式和大小。服務器

 1 <el-upload
 2   class="avatar-uploader"
 3   action="https://jsonplaceholder.typicode.com/posts/"
 4   :show-file-list="false"
 5   :on-success="handleAvatarSuccess"
 6   :before-upload="beforeAvatarUpload">
 7   <img v-if="imageUrl" :src="imageUrl" class="avatar">
 8   <i v-else class="el-icon-plus avatar-uploader-icon"></i>
 9 </el-upload>
10 
11 <style>
12   .avatar-uploader .el-upload {
13     border: 1px dashed #d9d9d9;
14     border-radius: 6px;
15     cursor: pointer;
16     position: relative;
17     overflow: hidden;
18   }
19   .avatar-uploader .el-upload:hover {
20     border-color: #409EFF;
21   }
22   .avatar-uploader-icon {
23     font-size: 28px;
24     color: #8c939d;
25     width: 178px;
26     height: 178px;
27     line-height: 178px;
28     text-align: center;
29   }
30   .avatar {
31     width: 178px;
32     height: 178px;
33     display: block;
34   }
35 </style>
36 
37 <script>
38   export default {
39     data() {
40       return {
41         imageUrl: ''
42       };
43     },
44     methods: {
45       handleAvatarSuccess(res, file) {
46         this.imageUrl = URL.createObjectURL(file.raw);
47       },
48       beforeAvatarUpload(file) {
49         const isJPG = file.type === 'image/jpeg';
50         const isLt2M = file.size / 1024 / 1024 < 2;
51 
52         if (!isJPG) {
53           this.$message.error('上傳頭像圖片只能是 JPG 格式!');
54         }
55         if (!isLt2M) {
56           this.$message.error('上傳頭像圖片大小不能超過 2MB!');
57         }
58         return isJPG && isLt2M;
59       }
60     }
61   }
62 </script>
View Code

照片牆

使用 list-type 屬性來設置文件列表的樣式。cookie

 1 <el-upload
 2   action="https://jsonplaceholder.typicode.com/posts/"
 3   list-type="picture-card"
 4   :on-preview="handlePictureCardPreview"
 5   :on-remove="handleRemove">
 6   <i class="el-icon-plus"></i>
 7 </el-upload>
 8 <el-dialog :visible.sync="dialogVisible">
 9   <img width="100%" :src="dialogImageUrl" alt="">
10 </el-dialog>
11 <script>
12   export default {
13     data() {
14       return {
15         dialogImageUrl: '',
16         dialogVisible: false
17       };
18     },
19     methods: {
20       handleRemove(file, fileList) {
21         console.log(file, fileList);
22       },
23       handlePictureCardPreview(file) {
24         this.dialogImageUrl = file.url;
25         this.dialogVisible = true;
26       }
27     }
28   }
29 </script>
View Code

圖片列表縮略圖

 1 <el-upload
 2   class="upload-demo"
 3   action="https://jsonplaceholder.typicode.com/posts/"
 4   :on-preview="handlePreview"
 5   :on-remove="handleRemove"
 6   :file-list="fileList2"
 7   list-type="picture">
 8   <el-button size="small" type="primary">點擊上傳</el-button>
 9   <div slot="tip" class="el-upload__tip">只能上傳jpg/png文件，且不超過500kb</div>
10 </el-upload>
11 <script>
12   export default {
13     data() {
14       return {
15         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'}]
16       };
17     },
18     methods: {
19       handleRemove(file, fileList) {
20         console.log(file, fileList);
21       },
22       handlePreview(file) {
23         console.log(file);
24       }
25     }
26   }
27 </script>
View Code

上傳文件列表控制

經過 on-change 鉤子函數來對列表進行控制ide

 1 <el-upload
 2   class="upload-demo"
 3   action="https://jsonplaceholder.typicode.com/posts/"
 4   :on-change="handleChange"
 5   :file-list="fileList3">
 6   <el-button size="small" type="primary">點擊上傳</el-button>
 7   <div slot="tip" class="el-upload__tip">只能上傳jpg/png文件，且不超過500kb</div>
 8 </el-upload>
 9 <script>
10   export default {
11     data() {
12       return {
13         fileList3: [{
14           name: 'food.jpeg',
15           url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
16           status: 'finished'
17         }, {
18           name: 'food2.jpeg',
19           url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
20           status: 'finished'
21         }]
22       };
23     },
24     methods: {
25       handleChange(file, fileList) {
26         this.fileList3 = fileList.slice(-3);
27       }
28     }
29   }
30 </script>
View Code

拖拽上傳

1 <el-upload
2   class="upload-demo"
3   drag
4   action="https://jsonplaceholder.typicode.com/posts/"
5   multiple>
6   <i class="el-icon-upload"></i>
7   <div class="el-upload__text">將文件拖到此處，或<em>點擊上傳</em></div>
8   <div class="el-upload__tip" slot="tip">只能上傳jpg/png文件，且不超過500kb</div>
9 </el-upload>
View Code

手動上傳

 1 <el-upload
 2   class="upload-demo"
 3   ref="upload"
 4   action="https://jsonplaceholder.typicode.com/posts/"
 5   :on-preview="handlePreview"
 6   :on-remove="handleRemove"
 7   :file-list="fileList"
 8   :auto-upload="false">
 9   <el-button slot="trigger" size="small" type="primary">選取文件</el-button>
10   <el-button style="margin-left: 10px;" size="small" type="success" @click="submitUpload">上傳到服務器</el-button>
11   <div slot="tip" class="el-upload__tip">只能上傳jpg/png文件，且不超過500kb</div>
12 </el-upload>
13 <script>
14   export default {
15     data() {
16       return {
17         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'}]
18       };
19     },
20     methods: {
21       submitUpload() {
22         this.$refs.upload.submit();
23       },
24       handleRemove(file, fileList) {
25         console.log(file, fileList);
26       },
27       handlePreview(file) {
28         console.log(file);
29       }
30     }
31   }
32 </script>
View Code

 


Attribute

參數 說明 類型 可選值 默認值
action 必選參數，上傳的地址 string — —
headers 設置上傳的請求頭部 object — —
multiple 是否支持多選文件 boolean — —
data 上傳時附帶的額外參數 object — —
name 上傳的文件字段名 string — file
with-credentials 支持發送 cookie 憑證信息 boolean — false
show-file-list 是否顯示已上傳文件列表 boolean — true
drag 是否啓用拖拽上傳 boolean — false
accept 接受上傳的文件類型（thumbnail-mode 模式下此參數無效） string — —
on-preview 點擊已上傳的文件連接時的鉤子, 能夠經過 file.response 拿到服務端返回數據 function(file) — —
on-remove 文件列表移除文件時的鉤子 function(file, fileList) — —
on-success 文件上傳成功時的鉤子 function(response, file, fileList) — —
on-error 文件上傳失敗時的鉤子 function(err, file, fileList) — —
on-progress 文件上傳時的鉤子 function(event, file, fileList) — —
on-change 文件狀態改變時的鉤子，添加文件、上傳成功和上傳失敗時都會被調用 function(file, fileList) — —
before-upload 上傳文件以前的鉤子，參數爲上傳的文件，若返回 false 或者返回 Promise 且被 reject，則中止上傳。 function(file) — —
before-remove 刪除文件以前的鉤子，參數爲上傳的文件和文件列表，若返回 false 或者返回 Promise 且被 reject，則中止上傳。 function(file, fileList) — —
list-type 文件列表的類型 string text/picture/picture-card text
auto-upload 是否在選取文件後當即進行上傳 boolean — true
file-list 上傳的文件列表, 例如: [{name: 'food.jpg', url: 'https://xxx.cdn.com/xxx.jpg'}] array — []
http-request 覆蓋默認的上傳行爲，能夠自定義上傳的實現 function — —
disabled 是否禁用 boolean — false
limit 最大容許上傳個數 number — —
on-exceed 文件超出個數限制時的鉤子 function(files, fileList) — -

Methods

方法名 說明 參數
clearFiles 清空已上傳的文件列表（該方法不支持在 before-upload 中調用） —
abort 取消上傳請求 （ file: fileList 中的 file 對象 ）
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