uniapp中微信小程序取微信头像并上传到.net core后端
2023年08月09日 后端net7测试成功，先记下来，以后要用的时候直接来这复制粘贴
前端uniapp里的vue代码：
<template>
<view>
<button class="avatar-wrapper" open-type="chooseAvatar" @chooseavatar="onChooseAvatar">
取微信头像
</button>
<view>头像：{{face}}</view>
<image :src="face" mode="aspectFit"></image>
</view>
</template>
<script>
export default {
data() {
return {
face: '',
}
},
methods: {
onChooseAvatar(e) {
this.face = e.detail.avatarUrl;
console.log("头像：" + this.face);
var uploadurl = "http://localhost:5049/wx/imgupload"
uni.uploadFile({
url: uploadurl,
filePath: this.face,
name: 'file',
formData: {
'openid': '123456'
},
success: (uploadFileRes) => {
console.log(uploadFileRes.data);
if(uploadFileRes.data.code==0){
var fronturl = uploadFileRes.data.data.fronturl;
var src = uploadFileRes.data.data.src;
this.face = fronturl+src;
}
}
});
}
}
}
</script>
<style>
button,
input {
border: 1px solid darkgray;
}
</style>
后端NET7代码，用了WEB API：
using JCT.DAL;
using JCT.Model;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using SqlSugar.Extensions;
namespace JCT.Web.ApiController
{
[Route("api/[controller]")]
[ApiController]
public class WXController : ControllerBase
{
//用于读取网站静态文件目录
private Microsoft.AspNetCore.Hosting.IHostingEnvironment hostingEnv;
public WXController(Microsoft.AspNetCore.Hosting.IHostingEnvironment hostingEnv)
{
this.hostingEnv = hostingEnv;
}
[HttpPost("ImgUpload")]
public IActionResult ImgUpload([FromForm] string openid)
{
if (Request.Form.Files.Count == 0)
{
return new JsonResult(new { code = 1, msg = "文件为空。" });
}
var imgFile = Request.Form.Files[0];
if (imgFile != null && !string.IsNullOrEmpty(imgFile.FileName))
{
long size = 0;
string tempname = "";
var filename = System.Net.Http.Headers.ContentDispositionHeaderValue
.Parse(imgFile.ContentDisposition)
.FileName
.Trim();
var extname = filename.Substring(filename.LastIndexOf('.'), filename.Length - filename.LastIndexOf('.')); //扩展名，如.jpg
extname = extname.Replace("\"", "");
#region 判断后缀
if (!extname.ToLower().Contains("jpg") && !extname.ToLower().Contains("png") && !extname.ToLower().Contains("gif")
&& !extname.ToLower().Contains("jpeg"))
{
return new JsonResult(new { code = 1, msg = "只允许上传jpg,png,gif格式的图片.", });
}
#endregion
#region 判断大小
long mb = imgFile.Length / 1024 / 1024; // MB
if (mb > 5)
{
return new JsonResult(new { code = 1, msg = "只允许上传小于 5MB 的图片.", });
}
#endregion
var filename1 = System.Guid.NewGuid().ToString().Substring(0, 6) + extname;
tempname = filename1;
var path = hostingEnv.WebRootPath; //网站静态文件目录 wwwroot
string dir = DateTime.Now.ToString("yyyyMMdd");
//完整物理路径
string wuli_path = path + $"{Path.DirectorySeparatorChar}upload{Path.DirectorySeparatorChar}{dir}{Path.DirectorySeparatorChar}";
if (!System.IO.Directory.Exists(wuli_path))
{
System.IO.Directory.CreateDirectory(wuli_path);
}
filename = wuli_path + filename1;
size += imgFile.Length;
using (FileStream fs = System.IO.File.Create(filename))
{
imgFile.CopyTo(fs);
fs.Flush();
}
string fronturl = HttpContext.Request.Scheme + "://" + HttpContext.Request.Host.Host + ":" + HttpContext.Request.Host.Port;
return new JsonResult(new
{
code = 0,
msg = "上传成功",
data = new
{
fronturl = fronturl,
src = $"/upload/{dir}/{filename1}",
title = filename1
}
});
}
return new JsonResult(new { code = 1, msg = "上传失败", });
}
}
}