小程序上传图片（.net core 接口）

<view wx:if="{{tempFilePath}}" class="choose-pic" bindtap="openModalPic">
{{tempFilePath?‘重新选择图片‘:‘选择图片‘}}
view>
<view wx:else class="upload-pic-btn">
<image src="{{upload_btn_pic}}" bindtap="openModalPic">image>
view>
<view class="pre-view-image" hidden="{{!tempFilePath}}">
<image src="{{tempFilePath}}" bindtap="preView">image>
view>
<view class="image-size" hidden="{{!tempFilePath||is_update_pic}}">
<view class="image-size-title">
图片大小:
view>
<view class="image-size-value ">
{{size_unit_m}}M
view>
view>
<view class=" {{max_size>=size?‘image-size-tip‘:‘image-size-error‘}} " hidden="{{!tempFilePath||is_update_pic}}">
限制上传大小2M,当前图片大小为{{size_unit_m}}M，{{max_size>=size?‘大小合适‘:‘图片过大，请重新选择！‘}}
view>
<view class="oper-list" hidden="{{!tempFilePath}}">
<view class="oper-item" bindtap="backPage">
返回
view>
<view class="oper-item" bindtap="uploadPic" hidden="{{is_update_pic}}">
上传
view>
view>

.choose-pic {
height: 88rpx;
align-items: center;
display: flex;
align-items: center;
justify-content: center;
background: #616EFB;
color: #fff;
width: 80%;
margin: 20rpx 10%;
border-radius: 16rpx;
}
page {
font-family: Source Han Sans CN;
background: #fff;
}
.pre-view-image {
display: flex;
width: 100%;
align-items: center;
justify-content: center;
margin-top: 100rpx;
}
.pre-view-image image {
border-radius: 8rpx;
}
.oper-list {
display: flex;
position: fixed;
align-items: center;
width: 100%;
bottom: 0rpx;
height: 112rpx;
border-top: 1rpx solid #E8E9EE;
}
.oper-item {
flex: 1;
background: #616EFB;
color: #fff;
margin: 0rpx 50rpx;
height: 78rpx;
border-radius: 12rpx;
font-size: 30rpx;
align-items: center;
display: flex;
justify-content: center;
}
.image-size {
height: 88rpx;
display: flex;
align-items: center;
font-size: 28rpx;
background: #EBF3FF;
margin: 32rpx;
color: #424656;
padding-left: 24rpx;
}
.image-size-title {
padding-right: 24rpx;
}
.image-size-value {
font-weight: 700;
}
.image-size-error {
font-size: 26rpx;
margin: 32rpx;
color: #F3273C;
padding-left: 24rpx;
}
.image-size-tip {
font-size: 26rpx;
margin: 32rpx;
color: #7A7D88;
padding-left: 24rpx;
}
.upload-pic-btn {
width: 100%;
text-align: center;
margin-top: 40%;
}
.upload-pic-btn image {
width: 360rpx;
height: 248rpx;
}

const app = getApp();
const http = require(‘../../../utils/http.js‘);
const api = require(‘../../../config.js‘);
const utils = require(‘../../../utils/util.js‘);
const dateHelper = require(‘../../../utils/date.js‘);
const operHelper = require(‘../../../utils/oper.js‘);
const messageHelper = require(‘../../../utils/message.js‘);
Page({
/**
* 页面的初始数据
*/
data: {
tempFilePath: ‘‘,
tempFiles: ‘‘,
max_size: 1024 * 1024 * 2,//最大2M
size: 5,
size_unit_m: 0,//格式化大小 M
goods_info: null,
upload_btn_pic: ‘‘,
base_url: ‘‘,
is_update_pic: false
},
/**
* 生命周期函数--监听页面加载
*/
onLoad: function (options) {
console.log(options);
console.log(getCurrentPages());
let _this = this;
let index = Number(options.index);
_this.setData({
upload_btn_pic: app.globalData.wxgh_oauth_url + ‘/Image/upload-pic.svg‘,
index: index
});
let pages = getCurrentPages();
let prePages = pages.filter(f => { return f.route === ‘pages/BillBusiness/GoodsFiles/GoodsFiles‘ });
let prepagesLen = prePages.length;
if (prepagesLen > 0) {
let tempGoods = prePages[prepagesLen - 1].data.goods_list[index];
_this.setData({
goods_info: tempGoods,
offlie_url: prePages[prepagesLen - 1].data.upload_pic_down_url,
});
if (tempGoods.pic) {
let shopid = app.globalData.shopid;
_this.setData({
is_update_pic: true
});
if (shopid.startsWith(‘9‘) || shopid.startsWith(‘8‘)) {
_this.setData({
tempFilePath: app.globalData.wxgh_oauth_url + tempGoods.pic + ‘&random2=‘ + Date.now()
});
} else {
//多台机，指定上传到指定的服务器
          _this.setData({
tempFilePath: "https://XXX" + tempGoods.pic + ‘&random2=‘ + Date.now()
});
}
}
}
},
openModalPic: function () {
let _this = this;
_this.setData({
tempFilePath: ‘‘,
tempFiles: ‘‘,
size: 0,
size_unit_m: 0
});
wx.chooseImage({
count: 1,
sizeType: [‘compressed‘],//只选择压缩的
sourceType: [‘album‘, ‘camera‘],
success: res => {
console.log(‘success‘)
console.log(res)
if (res.errMsg === ‘chooseImage:ok‘) {
let _tempFilePaths = res.tempFilePaths;
let _tempFiles = res.tempFiles;
let _size = _tempFiles[0].size;
_this.setData({
tempFilePath: _tempFilePaths[0],
size_unit_m: (_size / 1024 / 1024).toFixed(2),
size: _size,
is_update_pic: false
});
}
},
fail: f => {
console.log(f)
},
complete: c => {
console.log(‘complete‘)
console.log(c)
}
})
},
backPage: function () {
wx.navigateBack({
delta: 0,
})
},
preView: function () {
let _this = this;
let _tempFilePath = _this.data.tempFilePath;
wx.previewImage({
urls: [_tempFilePath],
success: r => {
console.log(r)
},
fail: f => {
console.log(f)
},
})
},
uploadPic: function () {
let _this = this;
let _tempFilePath = _this.data.tempFilePath;
if (!_tempFilePath) {
wx.showToast({
title: ‘请先选择图片！‘,
icon: ‘none‘
})
return;
}
if (_this.data.size > _this.data.max_size) {
wx.showToast({
title: ‘图片内容过大，请重新选择！‘,
icon: ‘none‘
})
return;
}
let goods = _this.data.goods_info;
let shopid = app.globalData.shopid + ‘‘;
let uploadPath = ‘‘;
if (shopid.startsWith(‘9‘)) {
uploadPath = app.globalData.wxgh_oauth_url + ‘/‘ + api.uploadPic;
} else if (shopid.startsWith(‘1‘)) {
uploadPath = "https://xxx" + ‘/‘ + api.uploadPic;
}
else {
uploadPath = app.globalData.wxgh_oauth_url + ‘/‘ + api.uploadPic;
}
wx.showLoading({
title: ‘上传中...‘,
mask: true
})
wx.uploadFile({
filePath: _tempFilePath,
name: ‘file‘,
url: uploadPath,
formData: {
"item_name": goods.item_name,
"shopid": app.globalData.shopid,
"sort_value": ‘0‘,
"item_no": goods.item_no,
"openid": app.globalData.openid,
"offlie_url": _this.data.offlie_url
},
header: {
"Content-Type": "multipart/form-data",
"chartset": "utf-8"
},
timeout: 60000,
success: res => {
console.log(res)
console.log(JSON.parse(res.data))
let _res = JSON.parse(res.data);
if (_res.success) {
let extensionNameIndex = _tempFilePath.lastIndexOf(‘.‘);
let _extensionName = _tempFilePath.substr(extensionNameIndex)
let pages = getCurrentPages();
let prePages = pages.filter(f => { return f.route === ‘pages/BillBusiness/GoodsFiles/GoodsFiles‘ });
let prepagesLen = prePages.length;
if (prepagesLen > 0) {
let tempGoodsList = prePages[prepagesLen - 1].data.goods_list;
tempGoodsList[_this.data.index].pic = _res.data.path + ‘?=‘ + Date.now();
let picList = prePages[prepagesLen - 1].data.pic_list;
if (picList.filter(f => { return f.item_no === goods.item_no }).length === 0) {
picList.push({
item_no: goods.item_no,
pic_name: goods.item_no + _extensionName + ‘?=‘ + Date.now(),
pic_path: ‘/itempic/‘ + shopid + ‘/‘ + goods.item_no + ‘/‘
});
prePages[prepagesLen - 1].setData({
pic_list: picList
});
}
prePages[prepagesLen - 1].setData({
goods_list: tempGoodsList
});
}
wx.showModal({
content: ‘上传图片成功!‘,
showCancel: false,
confirmText: ‘确定‘,
success: r => {
wx.navigateBack()
}
})
} else {
wx.showModal({
content: _res.message,
showCancel: false,
confirmText: ‘关闭‘
})
}
},
fail: f => {
console.log(‘上传失败~‘);
console.log(f)
wx.showModal({
content: f.errMsg,
showCancel: false,
confirmText: ‘关闭‘
})
},
complete: c => {
console.log(‘上传完成~‘);
console.log(c)
wx.hideLoading({
})
}
})
},
/**
* 生命周期函数--监听页面初次渲染完成
*/
onReady: function () {
},
/**
* 生命周期函数--监听页面显示
*/
onShow: function () {
},
/**
* 生命周期函数--监听页面隐藏
*/
onHide: function () {
},
/**
* 生命周期函数--监听页面卸载
*/
onUnload: function () {
},
/**
* 页面相关事件处理函数--监听用户下拉动作
*/
onPullDownRefresh: function () {
},
/**
* 页面上拉触底事件的处理函数
*/
onReachBottom: function () {
},
/**
* 用户点击右上角分享
*/
onShareAppMessage: function () {
}
})

 #region 上传图片
[HttpPost]
[DontWrapResult]
public async Task UploadPic(IFormFile file)
{
var _result = new Result();
try
{
var shopid = _httpContext.HttpContext.Request.Form["shopid"].ToString();
var item_no = _httpContext.HttpContext.Request.Form["item_no"].ToString();
var item_name = _httpContext.HttpContext.Request.Form["item_name"].ToString();
var sort_value = _httpContext.HttpContext.Request.Form["sort_value"].ToString();
var openid = _httpContext.HttpContext.Request.Form["openid"].ToString();
var offlie_url = _httpContext.HttpContext.Request.Form["offlie_url"].ToString();
string oper_id = "";
var operinfo = await _operInfoRepository.FirstOrDefaultAsync(i => i.shopid == shopid && i.openid == openid);
if (operinfo == null)
{
_result.success = false;
_result.message = "操作员不存在，请重新绑定操作员！";
return _result;
}
oper_id = operinfo.oper_id;
offlie_url = offlie_url.Trim();
int sortValue = 0;
if (!string.IsNullOrWhiteSpace(sort_value))
{
int.TryParse(sort_value.Trim(), out sortValue);
}
var fileName = file.FileName;
string Extension = Path.GetExtension(fileName);//获取文件的源后缀
if (string.IsNullOrEmpty(Extension))
{
_result.message = "文件上传的原始名称错误，没有找到文件后缀";
_result.success = false;
return _result;
}
fileName = item_no + Extension;
string rootdir = AppContext.BaseDirectory;
DirectoryInfo Dir = Directory.GetParent(rootdir);
                string root = Dir.FullName;
var dissss = Environment.CurrentDirectory;
string dicPath = Path.Combine(root + "/wwwroot/itempic/" + shopid + "/" + item_no);
if (!Directory.Exists(dicPath))
{
Directory.CreateDirectory(dicPath);
}
var fullName = dicPath + "/" + fileName;
if (File.Exists(fullName))
{
File.Delete(fullName);
}
//打开上传文件的输入流
Stream stream = file.OpenReadStream();
//开始保存拷贝文件
file.CopyTo(new FileStream(fullName, FileMode.Create));
                stream.Dispose();
               //将上传到服务器上的图片，转存到指定IP的客户机器
var saveResult = await _sheetDataService.SendOfflineUploadPic(new BossHelpUploadPicRequest()
{
itemno = item_no,
shopid = shopid,
upitempicurl = offlie_url,
file_name = fileName,
oper_id = oper_id
});
Logger.Error("SendOfflineUploadPic:" + JsonConvert.SerializeObject(saveResult));
if (saveResult.Code == 0)
{
_result.message = saveResult.Message;
_result.success = false;
_result.data = saveResult.Data;
return _result;
}
if (_itemInfoPicRepository.Count(a => a.shopid == shopid && a.item_no == item_no) == 0)
{
var itemInfoPic = new ItemInfoPic()
{
sort_value = sortValue,
shopid = shopid,
add_date = DateTime.Now,
item_name = item_name,
item_no = item_no,
openid = openid,
pic_name = fileName,
pic_path = "/itempic/" + shopid + "/" + item_no + "/",
};
await _itemInfoPicRepository.InsertAsync(itemInfoPic);
}
_result.data = new
{
temp_data = saveResult.Data,
path = "/itempic/" + shopid + "/" + item_no + "/" + fileName
};
_result.success = true;
}
catch (Exception ex)
{
_result.success = false;
_result.message = ex.Message;
Logger.Error("UploadPic 异常：" + ex.Message + "|" + ex.StackTrace);
}
return _result;
}
#endregion

 #region 上传图片到产品端
[DontWrapResult]
public async Task<Response> SendOfflineUploadPic(BossHelpUploadPicRequest model)
{
var _result = new Response();
try
{
//string sfile = @"E:\testpic\testbosshelp.jpg";
//sfile = model.filePath;
string upload_url = model.upitempicurl + "/api/ItemApi/UploadFile";// "http://xxx/api/ItemInfo/UploadFile";
string rootdir = AppContext.BaseDirectory;
System.IO.DirectoryInfo Dir = System.IO.Directory.GetParent(rootdir);
//string root = Dir.Parent.Parent.Parent.FullName;
string root = Dir.FullName;
string localPath = System.IO.Path.Combine(root + "/wwwroot/itempic/" + model.shopid + "/" + model.itemno + "/" + model.file_name);
                string fileName = localPath;// sfile;//文件全路径(e:\abc.txt)
string safeFileName = System.IO.Path.GetFileName(fileName);//文件名(abc.txt)

System.Net.WebClient client = new System.Net.WebClient();
client.Credentials = System.Net.CredentialCache.DefaultCredentials;
client.Headers.Add("Content-Type", "application/form-data");//注意头部必须是form-data
client.QueryString["fname"] = safeFileName;
client.QueryString["item_no"] = model.itemno;
client.QueryString["oper_id"] = model.oper_id;
byte[] fileb = client.UploadFile(new Uri(upload_url), "POST", fileName);
string res = System.Text.Encoding.UTF8.GetString(fileb);

var _data = JsonConvert.DeserializeObject(res.Replace("\r\n", ""));
if (_data == null)
{
_result.Message = "返回null";
_result.Code = 0;
return _result;
}
else
{
if (_data.success == "false")
{
_result.Message = _data.message;
_result.Code = 0;
return _result;
}
_result.Data = _data;
_result.Code = 1;
} }
catch (Exception ex)
{
Logger.Error("SendOfflineUploadPic异常：" + model.shopid + ",Message:" + ex.Message + ",StackTrace:" + ex.StackTrace);
_result.Message = "SendOfflineUploadPic异常：" + model.shopid + ",Message:" + ex.Message + ",StackTrace:" + ex.StackTrace;
_result.Message = ex.Message;
_result.Data = new BossHelpUploadPicResponse() { message = ex.StackTrace.ToString() };
_result.Code = 0;
return _result;
}
return _result;
}