快速实现多图片上传组件，支持单个文件，多个文件上传 步骤条step使用; 下载完整代码请访问uni-app插件市场地址：https://ext.dcloud.net.cn/plugin?id=12747
效果图如下:
代码如下：
# 多图片上传组件，支持单个文件，多个文件上传 支持图片压缩
#### 使用方法
```使用方法
// 服务器地址上传地址 仅为示例，非真实的接口地址
let baseUrl = "http://gzcc.com/cc//appSc/up"
uni.uploadFile({
url: baseUrl, //仅为示例，非真实的接口地址
files:this.photoList,
formData: this.myParamData,
success: (uploadFileRes) => {
uni.hideLoading();
console.log('上传成功 = ' + uploadFileRes.data);
}
});
```
#### HTML代码部分
```html
<template>
<view class="content" v-if="seen">
<uni-steps style="margin-top: 16px; margin-bottom: 16px;"
:options="[{title: '基本信息'}, {title: '房源信息'}, {title: '补充信息'}, {title: '提交成功'}]" :active="2"
active-color='#007AFF'></uni-steps>
<view class="lineView"></view>
<form @submit="formSubmit" @reset="formReset">
<view class="inputView">
<text class="leftTitle">交通指引</text>
</view>
<textarea class="rightTextarea" name="direct"
placeholder=" 请输入交通指引" />
<view class="inputView">
<text class="leftTitle">房屋介绍</text>
</view>
<textarea class="rightTextarea" name="village"
placeholder=" 请输入房屋介绍" />
<view class="inputView">
<text class="leftTitle">添加房源照片（最多可添加6张）</text>
</view>
<view class="tagView">
<!-- 自定义了一个data-id的属性,可以通过js获取到它的值! hover-class 指定按下去的样式类-->
<image class="addPhotoV" mode="aspectFill" v-for="(item, index) in photoList" :key="index" :src="item.uri">
</image>
<image class="addPhotoV" mode="center" @click="addPhotoClick" src="../../static/repair_camera.png">
</image>
</view>
<view class="uni-btn-v">
<button class="botBtn" type="primary" form-type="submit">提交</button>
<view class="tipText"> 注意事项: 请确保您填写的房屋信息真实无误 </view>
</view>
</form>
</view>
</template>
```
#### JS代码 （引入组件 填充数据）
```javascript
<script>
import Vue from 'vue';
export default {
data() {
return {
photoList: [],
seen: true,
myParamData: {},
isClick: false,
};
},
onLoad: function(e) {
if (typeof(e.myParamData) === 'string') {
this.myParamData = JSON.parse(e.myParamData);
console.log('页面3 数据 = ' + JSON.stringify(e));
}
},
methods: {
formSubmit: function(e) {
console.log('form发生了submit事件，携带数据为：' + JSON.stringify(e.detail.value));
if(this.isClick){
let that = this;
setTimeout(function () {
that.isClick = false;
}, 600)
return;
}
this.isClick = true;
var formdata = e.detail.value;
this.myParamData = Object.assign(this.myParamData, formdata);
console.log('页面3 myParamData=' + JSON.stringify(this.myParamData));
if (formdata['direct'].length < 2) {
uni.showModal({
content: '请输入交通指引',
showCancel: false
});
return;
}
if (formdata['village'].length < 2) {
uni.showModal({
content: '请输入所在小区介绍',
showCancel: false
});
return;
}
if (this.photoList.length < 1) {
uni.showModal({
content: '请添加房源照片',
showCancel: false
});
return;
}
if (this.photoList.length > 6) {
uni.showModal({
content: '最多只能选择提交6张图片',
showCancel: false
});
return;
}
uni.showLoading({
title:'上传中'
})
console.log('图片资源 = ' + JSON.stringify(this.photoList))
console.log('请求参数 = ' + JSON.stringify(this.myParamData));
// 服务器地址上传地址 仅为示例，非真实的接口地址
let baseUrl = "http://gzcc.com/cc//appSc/up"
uni.uploadFile({
url: baseUrl, //仅为示例，非真实的接口地址
files:this.photoList,
formData: this.myParamData,
success: (uploadFileRes) => {
uni.hideLoading();
console.log('上传成功 = ' + uploadFileRes.data);
}
});
},
addPhotoClick() {
uni.hideLoading();
let myThis = this;
if(myThis.photoList.length >= 6){
myThis.photoList = [];
}
uni.chooseImage({
count: 6,
sizeType: ['compressed'], //可以指定是原图还是压缩图，默认二者都有
sourceType: ['album'], //从相册选择
success: function(res) {
// myThis.photoList = res.tempFilePaths;
for(let j = 0; j < res.tempFilePaths.length; j++) {
let tmpdict = {name:'image',
uri:res.tempFilePaths[j]};
myThis.photoList.push(tmpdict);
}
console.log('选择图片 =' + JSON.stringify(myThis.photoList));
}
});
}
}
};
</script>
```
#### CSS
```CSS
<style>
.uni-form-item .title {
padding: 20rpx 0;
}
.content {
display: flex;
flex-direction: column;
width: 100%;
height: auto;
}
.inputView {
flex-direction: row;
display: flex;
height: 40px;
align-items: center;
width: 100%;
}
.line {
width: 90%;
height: 2rpx;
margin-left: -2rpx;
margin-left: 5%;
}
.leftTitle {
margin-left: 40rpx;
width: 284px;
height: 32px;
line-height: 32px;
font-size: 28rpx;
color: #333333;
}
.rightTextarea {
margin-left: 5%;
width: 90%;
height: 106px;
line-height: 40rpx;
border-radius: 12rpx;
border: solid 1px #F5F5F5;
font-size: 15px;
}
.addPhotoV {
margin-top: 7px;
margin-bottom: 7px;
width: calc((100vw - 70px)/3);
height: calc((100vw - 70px)/3.16);
margin-left: 17.5px;
border-radius: 12rpx;
border: solid 1px rgba(58.04%, 76.08%, 88.24%, 0.6);
}
.uni-btn-v{
width: 100%;
height: auto;
}
.botBtn {
width: 90%;
margin-top: 36px;
height: 48px;
}
.tipText {
width: 100%;
margin-left: 0px;
text-align: center;
color: #666666;
margin-top: 36px;
margin-bottom: 36px;
font-size: 28rpx;
}
</style>
```