using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
namespace xxx.xxx.xxx.Controllers
{
public class DiscuzTinyintViewerController : Controller
{
public IActionResult Index()
{
using var context = new Data.xxx.xxxContext();
var conn = context.Database.GetDbConnection();
conn.Open();
using var cmd = conn.CreateCommand();
cmd.CommandText = "SELECT `TABLE_NAME` FROM information_schema.TABLES WHERE TABLE_SCHEMA = DATABASE();";
Dictionary<string, List<FieldType>?> tables = new();
using var r = cmd.ExecuteReader();
while (r.Read())
{
tables.Add((string)r["TABLE_NAME"], null);
}
conn.Close();
foreach (var table in tables)
{
var conn2 = context.Database.GetDbConnection();
conn2.Open();
using var cmd2 = conn2.CreateCommand();
cmd2.CommandText = "DESCRIBE " + table.Key;
using var r2 = cmd2.ExecuteReader();
List<FieldType> fields = new();
while (r2.Read())
{
if (((string)r2[1]).Contains("tinyint(1)"))
{
fields.Add(new()
{
Field = (string)r2[0],
Type = (string)r2[1],
Null = (string)r2[2],
});
}
}
conn2.Close();
tables[table.Key] = fields;
}
foreach (var table in tables)
{
foreach (var f in table.Value)
{
var conn3 = context.Database.GetDbConnection();
conn3.Open();
using var cmd3 = conn3.CreateCommand();
cmd3.CommandText = $"SELECT {f.Field} as F, COUNT({f.Field}) as C FROM {table.Key} GROUP BY {f.Field}";
using var r3 = cmd3.ExecuteReader();
List<FieldType.ValueCount> vs = new();
while (r3.Read())
{
vs.Add(new() { Value = Convert.ToString(r3["F"]), Count = Convert.ToInt32(r3["C"]) });
}
conn3.Close();
f.groupedValuesCount = vs;
}
}
return Json(tables.Where(c => c.Value != null && c.Value.Count > 0));
}
private class FieldType
{
public string Field { get; set; }
public string Type { get; set; }
public string Null { get; set; }
public List<ValueCount> groupedValuesCount { get; set; }
public class ValueCount
{
public string Value { get; set; }
public int Count { get; set; }
}
public string RecommendedType
{
get
{
if (groupedValuesCount == null || groupedValuesCount.Count < 2)
{
return "无建议";
}
else if (groupedValuesCount.Count == 2 && groupedValuesCount.Any(c => c.Value == "0") && groupedValuesCount.Any(c => c.Value == "1"))
{
return "bool" + (Null == "YES" ? "?" : "");
}
else
{
return "sbyte" + (Null == "YES" ? "?" : "");
}
}
}
}
}
}[{
"key": "pre_forum_post",
"value": [{
"field": "first",
"type": "tinyint(1)",
"null": "NO",
"groupedValuesCount": [{
"value": "0",
"count": 1395501
}, {
"value": "1",
"count": 179216
}],
"recommendedType": "bool"
}, {
"field": "invisible",
"type": "tinyint(1)",
"null": "NO",
"groupedValuesCount": [{
"value": "-5",
"count": 9457
}, {
"value": "-3",
"count": 1412
}, {
"value": "-2",
"count": 1122
}, {
"value": "-1",
"count": 402415
}, {
"value": "0",
"count": 1160308
}, {
"value": "1",
"count": 3
}],
"recommendedType": "sbyte"
}, {
"field": "anonymous",
"type": "tinyint(1)",
"null": "NO",
"groupedValuesCount": [{
"value": "0",
"count": 1574690
}, {
"value": "1",
"count": 27
}],
"recommendedType": "bool"
}, {
"field": "usesig",
"type": "tinyint(1)",
"null": "NO",
"groupedValuesCount": [{
"value": "0",
"count": 162487
}, {
"value": "1",
"count": 1412230
}],
"recommendedType": "bool"
}, {
"field": "htmlon",
"type": "tinyint(1)",
"null": "NO",
"groupedValuesCount": [{
"value": "0",
"count": 1574622
}, {
"value": "1",
"count": 95
}],
"recommendedType": "bool"
}, {
"field": "bbcodeoff",
"type": "tinyint(1)",
"null": "NO",
"groupedValuesCount": [{
"value": "-1",
"count": 935448
}, {
"value": "0",
"count": 639229
}, {
"value": "1",
"count": 40
}],
"recommendedType": "sbyte"
}, {
"field": "smileyoff",
"type": "tinyint(1)",
"null": "NO",
"groupedValuesCount": [{
"value": "-1",
"count": 1359482
}, {
"value": "0",
"count": 215186
}, {
"value": "1",
"count": 49
}],
"recommendedType": "sbyte"
}, {
"field": "parseurloff",
"type": "tinyint(1)",
"null": "NO",
"groupedValuesCount": [{
"value": "0",
"count": 1572844
}, {
"value": "1",
"count": 1873
}],
"recommendedType": "bool"
}, {
"field": "attachment",
"type": "tinyint(1)",
"null": "NO",
"groupedValuesCount": [{
"value": "0",
"count": 1535635
}, {
"value": "1",
"count": 2485
}, {
"value": "2",
"count": 36597
}],
"recommendedType": "sbyte"
}, {
"field": "comment",
"type": "tinyint(1)",
"null": "NO",
"groupedValuesCount": [{
"value": "0",
"count": 1569146
}, {
"value": "1",
"count": 5571
}],
"recommendedType": "bool"
}]
}]测试在长度为 403 的字符串中查找,特意匹配最后几个字符:
string a = "";
for (int i = 0; i < 100; i++) { a += "aBcD"; }
a += "xYz";
string b = "xyz"; // 特意匹配最后几个字符
Stopwatch sw1 = Stopwatch.StartNew();
bool? r1 = null;
for (int i = 0; i < 10000; i++) { r1 = a.IndexOf(b) >= 0; }
sw1.Stop();
Stopwatch sw2 = Stopwatch.StartNew();
bool? r2 = null;
for (int i = 0; i < 10000; i++) { r2 = a.Contains(b); }
sw2.Stop();
Stopwatch sw3 = Stopwatch.StartNew();
bool? r3 = null;
for (int i = 0; i < 10000; i++) { r3 = a.ToUpper().Contains(b.ToUpper()); }
sw3.Stop();
Stopwatch sw4 = Stopwatch.StartNew();
bool? r4 = null;
for (int i = 0; i < 10000; i++) { r4 = a.ToLower().Contains(b.ToLower()); }
sw4.Stop();
Stopwatch sw5 = Stopwatch.StartNew();
bool? r5 = null;
for (int i = 0; i < 10000; i++) { r5 = a.Contains(b, StringComparison.OrdinalIgnoreCase); }
sw5.Stop();
Stopwatch sw6 = Stopwatch.StartNew();
bool? r6 = null;
for (int i = 0; i < 10000; i++) { r6 = a.Contains(b, StringComparison.CurrentCultureIgnoreCase); }
sw6.Stop();
Stopwatch sw7 = Stopwatch.StartNew();
bool? r7 = null;
for (int i = 0; i < 10000; i++) { r7 = Regex.IsMatch(a, b); }
sw7.Stop();
Stopwatch sw8 = Stopwatch.StartNew();
bool? r8 = null;
for (int i = 0; i < 10000; i++) { r8 = Regex.IsMatch(a, b, RegexOptions.IgnoreCase); }
sw8.Stop();
return Json(new
{
IndexOf_________________ = sw1.Elapsed + " " + r1,
Contains________________ = sw2.Elapsed + " " + r2,
ToUpper_________________ = sw3.Elapsed + " " + r3,
ToLower_________________ = sw4.Elapsed + " " + r4,
OrdinalIgnoreCase_______ = sw5.Elapsed + " " + r5,
CurrentCultureIgnoreCase = sw6.Elapsed + " " + r6,
IsMatch_________________ = sw7.Elapsed + " " + r7,
IsMatchIgnoreCase_______ = sw8.Elapsed + " " + r8,
});结果参考:
{
"indexOf_________________": "00:00:00.1455812 False",
"contains________________": "00:00:00.0003791 False",
"toUpper_________________": "00:00:00.0038182 True",
"toLower_________________": "00:00:00.0026113 True",
"ordinalIgnoreCase_______": "00:00:00.0096550 True",
"currentCultureIgnoreCase": "00:00:00.1596517 True",
"isMatch_________________": "00:00:00.0053627 False",
"isMatchIgnoreCase_______": "00:00:00.0084132 True"
}!! [FTP Server] Couldn't bind on x.x.x.x:21. Reason: WSAEADDRNOTAVAIL - Cannot assign requested address. Retrying in 1 seconds.
更改客户端连接的连接模式为:主动连接。
直接运行项目启动程序(在发布目录中,以项目名称为文件名,扩展名为 .exe 的可执行程序)
启动后可在“Now listening on:”所在行看到访问入口 URL(如图中 http://localhost:5000)。
在同服浏览器中打开该地址,访问到报错页面,回到该命令行窗口可见“fail”异常的详细信息。

今天发现在开发新项目时,微信分享失效了,开启 debug = true 后,在微信开发工具中提示:
{"errMsg":"updateTimelineShareData:fail, the permission value is offline verifying"}
在真机上提示:
{"errMsg":"config:ok"}
{"errMsg":"updateAppMessageShareData:ok"}
{"errMsg":"updateTimelineShareData"}
仍然找不出原因。
尝试打开已上线的项目,分享功能均正常。
偶然发现,当打开使用 JS-SDK 分享后的图文框的页面,能够正常分享,而直接点开链接的页面,没有分享按钮。
这难免不让人联想到最近GJ出的新政,新版微信已经开放淘宝、抖音等平台的链接打开权限,只是当点击链接的时候会出现一个风险提示页面:

而一旦由这个页面进入的网页,分享功能均不能正常。
另外还测试了以下几种情况的分享功能也能正常:
公众号推送的图文或链接、公众号菜单、个人发送到公众号的链接、通过扫一扫打开的页面等。
-- 2021.9
下载安装 ossftp:https://help.aliyun.com/document_detail/197500.html
设置 ossftp 开机启动:https://xoyozo.net/Blog/Details/linux-init-d
配置 Discuz! 存储远程附件到 OSS:https://help.aliyun.com/document_detail/32191.html
当 ASP.NET 发布一个新的小版本更新时(以 .NET 5.0.10 为例),生产环境服务器端可以直接下载安装 .NET 5.0.10 来自动替换 .NET 5.0.9。
倘若这时直接使用 VS 将 nuget 中版本为 5.0.9 的组件更新到 5.0.10 发布到服务器上的话,可能会发生错误:
HTTP Error 500.30 - ASP.NET Core app failed to start
这里我们可以在 nuget 回滚相关组件的版本至 5.0.9,等 VS 发现新的版本更新时,更新 VS 开发工具后,再更新 nuget 组件并进行发布即可。
着急的小伙伴可以直接前往 Microsoft .NET 网站下载安装包含 Runtime 5.0.10 的 SDK:

该情况同样发生在 ASP.NET Core 3.1 等大版本上。
若仍未生效,请重启服务器。
----------------
后注:安装完成后重启服务器可避免以上烦恼!
HttpHelper类:
using System; using System.Collections.Specialized; using System.IO; using System.Net; using System.Text; namespace ConsoleApplication1 { public static class HttpHelper { private static readonly Encoding DEFAULTENCODE = Encoding.UTF8; /// <summary> /// HttpUploadFile /// </summary> /// <param name="url"></param> /// <param name="file"></param> /// <param name="data"></param> /// <returns></returns> public static string HttpUploadFile(string url, string file, NameValueCollection data) { return HttpUploadFile(url, file, data, DEFAULTENCODE); } /// <summary> /// HttpUploadFile /// </summary> /// <param name="url"></param> /// <param name="file"></param> /// <param name="data"></param> /// <param name="encoding"></param> /// <returns></returns> public static string HttpUploadFile(string url, string file, NameValueCollection data, Encoding encoding) { return HttpUploadFile(url, new string[] { file }, data, encoding); } /// <summary> /// HttpUploadFile /// </summary> /// <param name="url"></param> /// <param name="files"></param> /// <param name="data"></param> /// <returns></returns> public static string HttpUploadFile(string url, string[] files, NameValueCollection data) { return HttpUploadFile(url, files, data, DEFAULTENCODE); } /// <summary> /// HttpUploadFile /// </summary> /// <param name="url"></param> /// <param name="files"></param> /// <param name="data"></param> /// <param name="encoding"></param> /// <returns></returns> public static string HttpUploadFile(string url, string[] files, NameValueCollection data, Encoding encoding) { string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x"); byte[] boundarybytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n"); byte[] endbytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n"); //1.HttpWebRequest HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); request.ContentType = "multipart/form-data; boundary=" + boundary; request.Method = "POST"; request.KeepAlive = true; request.Credentials = CredentialCache.DefaultCredentials; using (Stream stream = request.GetRequestStream()) { //1.1 key/value string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}"; if (data != null) { foreach (string key in data.Keys) { stream.Write(boundarybytes, 0, boundarybytes.Length); string formitem = string.Format(formdataTemplate, key, data[key]); byte[] formitembytes = encoding.GetBytes(formitem); stream.Write(formitembytes, 0, formitembytes.Length); } } //1.2 file string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: application/octet-stream\r\n\r\n"; byte[] buffer = new byte[4096]; int bytesRead = 0; for (int i = 0; i < files.Length; i++) { stream.Write(boundarybytes, 0, boundarybytes.Length); string header = string.Format(headerTemplate, "file" + i, Path.GetFileName(files[i])); byte[] headerbytes = encoding.GetBytes(header); stream.Write(headerbytes, 0, headerbytes.Length); using (FileStream fileStream = new FileStream(files[i], FileMode.Open, FileAccess.Read)) { while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0) { stream.Write(buffer, 0, bytesRead); } } } //1.3 form end stream.Write(endbytes, 0, endbytes.Length); } //2.WebResponse HttpWebResponse response = (HttpWebResponse)request.GetResponse(); using (StreamReader stream = new StreamReader(response.GetResponseStream())) { return stream.ReadToEnd(); } } } }调用示例:
using System; using System.Collections.Specialized; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { NameValueCollection data = new NameValueCollection(); data.Add("name", "木子屋"); data.Add("url", "http://www.mzwu.com/"); Console.WriteLine(HttpHelper.HttpUploadFile("http://localhost/Test", new string[] { @"E:\Index.htm", @"E:\test.rar" }, data)); Console.ReadKey(); } } }
已使用指定的进程(“Web Management Service”)连接到远程计算机,但未能验证服务器的证书。如果你信任该服务器,请再次连接并允许不信任的证书。 在以下位置了解更多信息: https://go.microsoft.com/fwlink/?LinkId=221672#ERROR_CERTIFICATE_VALIDATION_FAILED。
基础连接已经关闭: 未能为 SSL/TLS 安全通道建立信任关系。
根据验证过程,远程证书无效。



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| 版本 | 类参考 | 代码示例 |
| JavaScript API 4.0 | 类参考 | 代码示例 |
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| 版本 | 类参考 | 示例DEMO |
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更多:拾取坐标系统
坐标系:BD-09(百度坐标)
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PC端于2022年11月11日停止服务
开放平台(腾讯位置服务):https://lbs.qq.com/
控制台:https://lbs.qq.com/dev/console
| 版本 | 参考手册 | 示例 |
| JavaScript API GL | 参考手册 | 示例 |
更多:位置服务
坐标系:GCJ-02(火星坐标、国测局坐标系)