1.訪問Element官網【組件–Upload上傳】
<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>
2.我的需求:點擊保存按鈕手動上傳,只能上傳一張圖片,參數爲userId
3.script中的data( )和methods( )如下:
<script>
export default {
data() {
return {
file:'',
dialogImageUrl: '',
dialogVisible: false,
imgUrl:'',
userId: '',
uid:'',
// 上傳圖片時附帶的額外參數userId
resData:{
userId: window.localStorage["userId"]
},
};
},
methods: {
handleRemove(file, fileList) {
console.log(file, fileList);
},
handlePictureCardPreview(file) {
this.dialogImageUrl = file.url;
this.dialogVisible = true;
},
// 點擊保存按鈕上傳圖片
submit2:function(res){
this.$refs.upload.submit();
},
// 圖片上傳成功後,後臺返回圖片的路徑
onSuccess:function(res){
// console.log(res);
if(res.status==200){
this.imgUrl=res.data.imgUrl;
}
},
}
}
</script>
4.該組件的效果圖如下: