1.访问Element官网【组件–Upload上传】
![vue中使用elementUI组件的Upload 上传图片 vue中使用elementUI组件的Upload 上传图片](/default/index/img?u=aHR0cHM6Ly9waWFuc2hlbi5jb20vaW1hZ2VzLzEwMC9jOGYyNDBlMWJiZmM0ZTUyMzhhNjcwZGEyOTlmYjIxNC5wbmc=)
<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:点击保存按钮手动上传,只能上传一张图片,参数为userId
![vue中使用elementUI组件的Upload 上传图片 vue中使用elementUI组件的Upload 上传图片](/default/index/img?u=aHR0cHM6Ly9waWFuc2hlbi5jb20vaW1hZ2VzLzE4MC80ODkxMDMwODk1ODY0YmY0YWM5MWYyNGYzYWJiMjE3Yy5wbmc=)
3.script中的data( )和methods( )如下:
<script>
export default {
data() {
return {
file:'',
dialogImageUrl: '',
dialogVisible: false,
imgUrl:'',
userId: '',
uid:'',
// 上传图片时附带的额外参数userId
resData:{
userId: window.localStorage["userId"]
},
};
},
methods: {
handleRemove(file, fileList) {
console.log(file, fileList);
},
handlePictureCardPreview(file) {
this.dialogImageUrl = file.url;
this.dialogVisible = true;
},
// 点击保存按钮上传图片
submit2:function(res){
this.$refs.upload.submit();
},
// 图片上传成功后,后台返回图片的路径
onSuccess:function(res){
// console.log(res);
if(res.status==200){
this.imgUrl=res.data.imgUrl;
}
},
}
}
</script>
4.该组件的效果图如下:
![vue中使用elementUI组件的Upload 上传图片 vue中使用elementUI组件的Upload 上传图片](/default/index/img?u=aHR0cHM6Ly9waWFuc2hlbi5jb20vaW1hZ2VzLzI5MC9jNDhkMjk0NzgxM2JmNDc1NWNiNmUzN2ZkZGYzNjAyMi5wbmc=)