public ActionResult UploadImge(string serverId)
{
var headPath = "/UploadImage/" + DateTime.Now.ToString("yyyyMM");
string AbsoluteFilePath = Server.MapPath(headPath);
if (!Directory.Exists(AbsoluteFilePath))
{
Directory.CreateDirectory(AbsoluteFilePath);
}
string imgPath = headPath + "/" + DateTime.Now.ToString("yyyyMMddHHmm") + serverId + ".jpg";//原图
string AbsolutePath = Server.MapPath(imgPath);
WeChatClient.SaveMultimedia(serverId, AbsolutePath);
return Json(imgPath);
}
public ActionResult UploadImge2(string serverId)
{
var headPath = "/UploadImage/" + DateTime.Now.ToString("yyyyMM");
string AbsoluteFilePath = Server.MapPath(headPath);
if (!Directory.Exists(AbsoluteFilePath))
{
Directory.CreateDirectory(AbsoluteFilePath);
}
string imgPath = headPath + "/" + DateTime.Now.ToString("yyyyMMddHHmm") + serverId + ".jpg";
string AbsolutePath = Server.MapPath(imgPath);
WeChatClient.SaveMultimedia(serverId, AbsolutePath);
CommonUtil.MakeThumbnail(AbsolutePath, AbsolutePath.Replace(".jpg", "_2.jpg"),3, 4);//以3:4比例裁剪
return Json(imgPath);
}
public ActionResult UploadImge3(string serverId)
{
var headPath = "/UploadImage/" + DateTime.Now.ToString("yyyyMM");
string AbsoluteFilePath = Server.MapPath(headPath);
if (!Directory.Exists(AbsoluteFilePath))
{
Directory.CreateDirectory(AbsoluteFilePath);
}
string imgPath = headPath + "/" + DateTime.Now.ToString("yyyyMMddHHmm") + serverId + ".jpg";
string AbsolutePath = Server.MapPath(imgPath);
WeChatClient.SaveMultimedia(serverId, AbsolutePath);
CommonUtil.MakeThumbnail(AbsolutePath, AbsolutePath.Replace(".jpg", "_3.jpg"), 4, 3);//以4:3比例裁剪图片
return Json(imgPath);
}
public static void MakeThumbnail(string originalImagePath, string thumbnailPath, int bw = 4, int bh = 3)
{
try
{
Image originalImage = Image.FromFile(originalImagePath);
var bl = originalImage.Height * 1.00 / originalImage.Width;
int orgWith, orgHeight, startY = 0, startX = 0, newWith, newHeight = 0;
var bd = bh * 1.00 / bw;
if (bl > bd)
{
orgWith = originalImage.Width;
orgHeight = (int)(originalImage.Width * bh / bw);
startY = (originalImage.Height - orgHeight) / 2;
newWith = orgWith;
if (newWith > 720)
{
newWith = 720;
}
newHeight = (int)(newWith * bh / bw);
}
else
{
orgWith = originalImage.Height * bw / bh;
orgHeight = originalImage.Height;
startX = (originalImage.Width - orgWith) / 2;
newWith = orgWith;
if (newWith > 720)
{
newWith = 720;
}
newHeight = (int)(newWith * bh / bw);
}
Bitmap destBitmap = new Bitmap(newWith, newHeight);//目标图
Rectangle destRect = new Rectangle(0, 0, newWith, newHeight);//矩形容器
Rectangle srcRect = new Rectangle(startX, startY, orgWith, orgHeight);
var g = Graphics.FromImage(destBitmap);
//设置高质量插值法
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
//设置高质量,低速度呈现平滑程度
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
//清空画布并以透明背景色填充
g.Clear(Color.Transparent);
try
{
g.DrawImage(originalImage, destRect, srcRect, GraphicsUnit.Pixel);
destBitmap.Save(thumbnailPath, originalImage.RawFormat);
}
catch (System.Exception e)
{
}
finally
{
originalImage.Dispose();
destBitmap.Dispose();
g.Dispose();
}
}
catch (Exception)
{
}
}
}
public static void SaveMultimedia(string MEDIA_ID, string savepath)
{
string file = string.Empty;
string strpath = string.Empty;
string stUrl = "http://file.api.weixin.qq.com/cgi-bin/media/get?access_token=" + MyToken.Token + "&media_id=" + MEDIA_ID;
HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(stUrl);
req.Method = "GET";
using (WebResponse wr = req.GetResponse())
{
HttpWebResponse myResponse = (HttpWebResponse)req.GetResponse();
strpath = myResponse.ResponseUri.ToString();
WebClient mywebclient = new WebClient();
try
{
mywebclient.DownloadFile(strpath, savepath);
}
catch (Exception ex)
{
savepath = ex.ToString();
}
}
}
var uploadNum = 0;
wx.config({
debug: false, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。
appId: '********', // 必填，公众号的唯一标识
timestamp: '@(ViewBag.timestamp)', // 必填，生成签名的时间戳
nonceStr: '@(ViewBag.nonceStr)', // 必填，生成签名的随机串
signature: '@(ViewBag.signature)',// 必填，签名，见附录1
jsApiList: ['chooseImage', 'previewImage', 'uploadImage', 'downloadImage'] // 必填，需要使用的JS接口列表，所有JS接口列表见附录2
});
function uploadImge() {
var ttnum = 5 - uploadNum;
wx.chooseImage({
count: ttnum, // 默认9
sizeType: ['compressed'], // 可以指定是原图还是压缩图，默认二者都有
sourceType: ['album', 'camera'], // 可以指定来源是相册还是相机，默认二者都有
success: function (res) {
var localIds = res.localIds; // 返回选定照片的本地ID列表，localId可以作为img标签的src属性显示图片
uploadImg(localIds, 0);
}
});
}
function uploadImg(localIds, num) {
if (localIds.length <= num) {
return;
}
var localId = localIds[num];
wx.uploadImage({
localId: localId, // 需要上传的图片的本地ID，由chooseImage接口获得
isShowProgressTips: 1, // 默认为1，显示进度提示
success: function (sres) {
var serverId = sres.serverId; // 返回图片的服务器端ID
$.post("/WeiXin/Home/UploadImge3", { serverId: serverId }, function (data) {
var picPath = $("#PicPath").val();
if (picPath == "") {
picPath = data;
} else {
picPath = picPath + "," + data;
}
$("#PicPath").val(picPath);
var temphtml = "";
if (window.__wxjs_is_wkwebview) {
wx.getLocalImgData({
localId: localId, // 图片的localID
success: function (res) {
var localData = res.localData; // localData是图片的base64数据，可以用img标签显示
temphtml = '<div class="col-xs-6"><img src="/Content/img/叉-m.png" style="width:20px;height:20px;position:absolute;z-index:2;right:15px;" onclick="delimg(this,\'' + data + '\')"/><img src="' + localData + '" class="picimg" style="z-index:1;position:absolute"/>';
$("#picdiv").before(temphtml);
uploadNum = uploadNum + 1;
if (uploadNum >= 5) {
$("#picdiv").hide();
}
uploadImg(localIds, num + 1)
}
});
} else {
temphtml = '<div class="col-xs-6"><img src="/Content/img/叉-m.png" style="width:20px;height:20px;position:absolute;z-index:2;right:15px;" onclick="delimg(this,\'' + data + '\')"/><img src="' + localId + '" class="picimg" style="z-index:1;position:absolute"/>';
$("#picdiv").before(temphtml);
uploadNum = uploadNum + 1;
if (uploadNum >= 5) {
$("#picdiv").hide();
}
uploadImg(localIds, num + 1)
}
})
}
});
}
