.net core建站踩坑记录

易墨2017年7月10日大约 5 分钟

系统：win10

VS版本：2017

.NET Core 版本： 1.1

零.读取配置文件

参考：http://www.tuicool.com/articles/QfYVBvi

此版本无需添加其他组件
在appsettings.json配置中添加节点AppSettings
图片
添加配置文件的映射模型
图片
在Startup.cs ConfigureServices方法中注册

        services.AddOptions();

        services.Configure<AppSettings>(Configuration.GetSection("AppSettings"));

Controller中使用
图片
控制台使用

添加nuget包


    <PackageReference Include="Microsoft.Extensions.Configuration" Version="2.0.0" />

    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="2.0.0" />

main函数配置


           using Microsoft.Extensions.Configuration;

            var Configuration = new ConfigurationBuilder()

            .SetBasePath(System.IO.Directory.GetCurrentDirectory())

            .AddJsonFile(path: $"appsettings.json") 

            .AddJsonFile(path: $"appsettings.Test.json",optional:true) //可选，若有存在的key，则test优先级更高

            .Build();

            System.Console.WriteLine(Configuration.GetSection("test").Value);

一、登录记录session

参考：http://www.cnblogs.com/fonour/p/5943401.html

二、发布.net core1.1.2网站到windos服务器

参考：https://docs.microsoft.com/en-us/aspnet/core/publishing/iis

我的服务器是windows server 2012 ,.net core网站版本为1.1.2

经安装好iis

下载安装：

  [.NET Core Windows Server Hosting](https://go.microsoft.com/fwlink/?linkid=848766) 

  [Microsoft Visual C++ 2015 Redistributable Update 3](https://www.microsoft.com/en-us/download/details.aspx?id=53840)

发布.net core网站到IIS，并将应用池的.NET CLR版本修改为[无托管代码]

三、DES加密解密算法

亲测可用

  public class SecurityHelper

  {

      #region 加密解密法一

      //默认密钥向量 

      private static byte[] Keys = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F };

      /// <summary> 

      /// DES加密字符串 

      /// </summary> 

      /// <param name="encryptString">待加密的字符串</param> 

      /// <param name="encryptKey">加密密钥,要求为16位</param> 

      /// <returns>加密成功返回加密后的字符串，失败返回源串</returns> 

      public static string EncryptDES(string encryptString, string encryptKey = "Key123Ace#321Key")

      {

          try

          {

              byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 16));

              byte[] rgbIV = Keys;

              byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);

              var DCSP = Aes.Create();

              MemoryStream mStream = new MemoryStream();

              CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);

              cStream.Write(inputByteArray, 0, inputByteArray.Length);

              cStream.FlushFinalBlock();

              return Convert.ToBase64String(mStream.ToArray());

          }

          catch (Exception ex)

          {

              return ex.Message + encryptString;

          }

      }

      /// <summary> 

      /// DES解密字符串 

      /// </summary> 

      /// <param name="decryptString">待解密的字符串</param> 

      /// <param name="decryptKey">解密密钥,要求为16位,和加密密钥相同</param> 

      /// <returns>解密成功返回解密后的字符串，失败返源串</returns> 

      public static string DecryptDES(string decryptString, string decryptKey = "Key123Ace#321Key")

      {

          try

          {

              byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey.Substring(0, 16));

              byte[] rgbIV = Keys;

              byte[] inputByteArray = Convert.FromBase64String(decryptString);

              var DCSP = Aes.Create();

              MemoryStream mStream = new MemoryStream();

              CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);

              Byte[] inputByteArrays = new byte[inputByteArray.Length];

              cStream.Write(inputByteArray, 0, inputByteArray.Length);

              cStream.FlushFinalBlock();

              return Encoding.UTF8.GetString(mStream.ToArray());

          }

          catch (Exception ex)

          {

              return ex.Message + decryptString;

          }

      }

      #endregion 

  }

四、过滤器定义

继承Attribute,实现IActionFilter即可

简单校验登录,获取cookie值并解密后得到用户名,未登录则跳转登录(ApplicationKey为自定义的类存放)

public class UserCheckFilterAttribute : Attribute, IActionFilter

{

    public void OnActionExecuted(ActionExecutedContext context)

    {

    }

    public void OnActionExecuting(ActionExecutingContext filterContext)

    {

        string encryptValue = "";

        filterContext.HttpContext.Request.Cookies.TryGetValue(ApplicationKey.User_Cookie_Key, out encryptValue);

        if (encryptValue == null)

        {

            filterContext.Result = new RedirectResult("/Account/Login");

            return;

        }

        var userName = SecurityHelper.DecryptDES(encryptValue, ApplicationKey.User_Cookie_Encryption_Key);

        if (string.IsNullOrEmpty(userName))

        {

            filterContext.Result = new RedirectResult("/Account/Login");

            return;

        }

    }

}

五、注入服务

Startup.cs中的ConfigureServices方法调用services.AddTransient<IUserService,UserService>();注册服务

根据路径调用脚本

调用：var errMsg="";var result=ExcuteBatFile(path,ref errMsg);

    public static string ExcuteBatFile(string batPath, ref string errMsg)

    {

        if (errMsg == null) throw new ArgumentNullException("errMsg");

        string output;

        using (Process process = new Process())

        {

            FileInfo file = new FileInfo(batPath);

            if (file.Directory != null)

            {

                process.StartInfo.WorkingDirectory = file.Directory.FullName;

            }

            process.StartInfo.FileName = batPath;

            process.StartInfo.RedirectStandardOutput = true;

            process.StartInfo.RedirectStandardError = true;

            process.StartInfo.UseShellExecute = false;

            process.StartInfo.CreateNoWindow = true;

            process.Start();

            //process.WaitForExit();

            output = process.StandardOutput.ReadToEnd();

            errMsg = process.StandardError.ReadToEnd();

        }

        return output;

    }

命令生成发布文件

系统需要安装CORE SDK

若上传到git仓库，拉取后需要再项目目录中执行还原命令 dotnet restore

dotnet publish --framework netcoreapp1.1 --output "C:\Publish" --configuration Release

命令相关文档：https://docs.microsoft.com/zh-cn/dotnet/core/tools/

linux 部署

安装Ubuntu(ubuntu-16.04.2-server-amd64.iso) 教程：http://www.cnblogs.com/wangjieguang/p/hyper-v-ubuntu.html

部署文章参考：http://www.cnblogs.com/wangjieguang/p/aspnetcore-ubuntuserver.html

Linux下安装SDK https://www.microsoft.com/net/core#linuxubuntu

文章收集

超详细的Hyper-V安装Ubuntu： http://www.cnblogs.com/wangjieguang/p/hyper-v-ubuntu.html

Ubuntu部署.NET Core：http://www.cnblogs.com/wangjieguang/p/aspnetcore-ubuntuserver.html

--------------------2017-07-24记录--------------------

接口`return Json()`时序列化格式的设置

在Startup.cs-》ConfigureServices方法配置一下解决


        public void ConfigureServices(IServiceCollection services)

        {

            // Add framework services.

            services.AddMvc()

                    .AddJsonOptions(op =>

                    {

                        //默认使用帕斯卡命名法(oneTwo) CamelCasePropertyNamesContractResolver

                       //若使用骆驼命名法可使用DefaultContractResolver

                        op.SerializerSettings.ContractResolver =

                       new Newtonsoft.Json.Serialization.DefaultContractResolver();

                        //返回数据中有DateTime类型，自定义格式

                        op.SerializerSettings.DateFormatString = "yyyy-MM-dd HH:mm";

                    });

        }

视图中输出中文会编码

ConfigureServices方法中配置即可，详情见园长文章 http://www.cnblogs.com/dudu/p/5879913.html


            services.Configure<WebEncoderOptions>(options =>

            {

                options.TextEncoderSettings = new TextEncoderSettings(UnicodeRanges.All);

            });

中文乱码解决

控制台乱码

添加：Console.OutputEncoding = Encoding.Unicode;

网页输出乱码

添加:context.Response.ContentType = "text/pain;charset=utf-8";

参考评论：http://www.cnblogs.com/wolf-sun/p/6136482.html

.net core中配置伪静态

Configure方法中，还是一样的配方


         app.UseMvc(routes =>

            {

                routes.MapRoute(

                    name: "index",

                    template: "index.html",

                    defaults: new { controller = "Home", action = "Index" }

                );

                routes.MapRoute(

                    name: "detail",

                    template: "detail/{id}.html",

                    defaults: new { controller = "Home", action = "Detail" }

                );

                routes.MapRoute(

                    name: "add",

                    template: "add.html",

                    defaults: new { controller = "Home", action = "Add" }

                );

                routes.MapRoute(

                    name: "default",

                    template: "{controller=Home}/{action=Index}/{id?}");

            });

单个文件上传


        [HttpPost]

        public IActionResult Upload(IFormFile file)

        {

            string previewPath = "";//加域名什么的

            long size = 0;

            var upFileName = ContentDispositionHeaderValue

                   .Parse(file.ContentDisposition)

                   .FileName

                   .Trim('"');

            var fileName = Guid.NewGuid() + Path.GetExtension(upFileName);

            size += file.Length;

            if (size > UploadMaxLength)

            {

                return Json(new

                {

                    code = 0,

                    msg = "图片太大，不能超过5M"

                });

            }

            previewPath += "/uploads/" + fileName;

            var savePath = _hostingEnv.WebRootPath + @"\uploads\" + fileName;

            var saveDir = _hostingEnv.WebRootPath + @"\uploads\";



            if (!Directory.Exists(saveDir))

            {

                Directory.CreateDirectory(saveDir);

            }

            using (FileStream fs = System.IO.File.Create(savePath))

            {

                file.CopyTo(fs);

                fs.Flush();

            }

            return Json(new

            {

                code = 0,

                msg = "上传成功",

                data = new

                {

                    src = previewPath,

                    title = ""

                }

            });

        }

返回JSON自定义DateTime类型格式


services.AddMvc().AddJsonOptions(op =>

{

    op.SerializerSettings.DateFormatString = "yyyy-MM-dd HH:mm";

});

[FromBody]接口模型验证类型转换的问题

如果模型中存在非空值类型的字段A:public int 字段A{get;set;}

然后向接口提交一个 {字段A:""} 或者{字段A:null}

提交后会被 ModelState 拦截验证不通过

目前的解决方法有

修改类型为可空类型
全局设置下序列化忽略null和空字符串，目前 [FromForm] 格式的数据不知道如何处理


 services.AddMvc().AddJsonOptions(op =>

{

    op.SerializerSettings.NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore;

    op.SerializerSettings.MissingMemberHandling = Newtonsoft.Json.MissingMemberHandling.Ignore;

});

.net core 获取IP地址

request.HttpContext.Connection.RemoteIpAddress

.net core 获取请求URL


// GetAbsoluteUri(request)

      public string GetAbsoluteUri(HttpRequest request)

        {

            return new StringBuilder()

                .Append(request.Scheme)

                .Append("://")

                .Append(request.Host)

                .Append(request.PathBase)

                .Append(request.Path)

                .Append(request.QueryString)

                .ToString();

        }

.net core 过滤器中获取提交的post数据

文档地址：https://docs.microsoft.com/zh-cn/aspnet/core/mvc/controllers/filters?view=aspnetcore-2.0#action-filters
相关issues：https://github.com/aspnet/Mvc/issues/7251

.net core 实现一个日志过滤器




    public class AdminLogAttribute : Attribute, IActionFilter

    {



        public void OnActionExecuting(ActionExecutingContext filterContext)

        {



        }

        public void OnActionExecuted(ActionExecutedContext context)

        {

            //获取提交的参数 context.ActionArguments 



        }



   }