.netcore 跨域+jwt+log4net

跨域

 #region CORS 跨域

            services.AddCors(options =>
            {
                options.AddPolicy("any", builder =>
                {
                    builder
                      .AllowAnyHeader()
                      .AllowAnyMethod()
                      .AllowAnyOrigin();
                });
            });

 

// 允许所有跨域，cors是在ConfigureServices方法中配置的跨域策略名称
app.UseCors("any");
app.UseFileServer();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthentication();
app.UseAuthorization();

　　

　

　jwt

安装 包 Microsoft.AspNetCore.Authentication.JwtBearer（5.0.17）

　　　　Microsoft.AspNetCore.Mvc.NewtonsoftJson（5.0.17）

 #region Jwt配置
            // 注册JWT服务
            services.AddAuthentication(options =>
            {
                options.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
            })
            .AddJwtBearer(options =>
            {
                options.TokenValidationParameters = new TokenValidationParameters()
                {
                    ValidateIssuer = true, //是否验证Issuer
                    ValidIssuer = Configuration["Jwt:Issuer"], //发行人Issuer
                    ValidateAudience = true, //是否验证Audience
                    ValidAudience = Configuration["Jwt:Audience"], //订阅人Audience
                    ValidateIssuerSigningKey = true, //是否验证SecurityKey
                    IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(Configuration["Jwt:SecretKey"])), //SecurityKey
                    ValidateLifetime = true, //是否验证失效时间
                    ClockSkew = TimeSpan.FromSeconds(30), //过期时间容错值，解决服务器端时间不同步问题（秒）
                    RequireExpirationTime = true,
                };
            });
　　　　　　
　　       //设置日期格式

 　　　　　　services.AddControllers()
              .AddNewtonsoftJson(op =>
              { //Newtonsoft.Json
                  op.SerializerSettings.DateFormatString = "yyyy-MM-dd HH:mm:ss";
                  op.SerializerSettings.Formatting = Newtonsoft.Json.Formatting.Indented;
              });

            services.AddSingleton(new JwtHelper(Configuration));

            #endregion

　　新建一个类     JwtHelper

 public class JwtHelper
    {
        private readonly IConfiguration _configuration;
        public JwtHelper(IConfiguration configuration)
        {
            _configuration = configuration;
        }
        public string CreateToken()
        {
            // 1. 定义需要使用到的Claims
            var claims = new[]
            {
            new Claim(ClaimTypes.Name, "u_admin"), //HttpContext.User.Identity.Name
            new Claim(ClaimTypes.Role, "r_admin"), //HttpContext.User.IsInRole("r_admin")
            new Claim(JwtRegisteredClaimNames.Jti, "admin"),
            new Claim("Username", "Admin"),
            new Claim("Name", "超级管理员")
        };
            // 2. 从 appsettings.json 中读取SecretKey
            var secretKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_configuration["Jwt:SecretKey"]));
            // 3. 选择加密算法
            var algorithm = SecurityAlgorithms.HmacSha256;
            // 4. 生成Credentials
            var signingCredentials = new SigningCredentials(secretKey, algorithm);
            // 5. 根据以上，生成token
            var jwtSecurityToken = new JwtSecurityToken(
                _configuration["Jwt:Issuer"],     //Issuer
                _configuration["Jwt:Audience"],   //Audience
                claims,                          //Claims,
                DateTime.Now,                    //notBefore
                DateTime.Now.AddSeconds(30),    //expires
                signingCredentials               //Credentials
            );
            // 6. 将token变为string
            var token = new JwtSecurityTokenHandler().WriteToken(jwtSecurityToken);
            return token;
        }

    }

　　在appsetting.json中添加

"Jwt": {
    "SecretKey": "745058532@qq.com",
    "Issuer": "WebAppIssuer",
    "Audience": "WebAppAudience"
  }

　　log4net

在program文件中加入

public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
            .ConfigureLogging(loggingBuilder =>
            {
                loggingBuilder.AddLog4Net("log4net.config");
            })
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                });

　　

创建log4net.config文件

安装 包 Microsoft.Extensions.Logging.Log4Net.AspNetCore（6.13）

<?xml version="1.0" encoding="utf-8"?>
<log4net>
  <!-- Define some output appenders -->
  <appender name="rollingAppender" type="log4net.Appender.RollingFileAppender">
    <file value="log\log.txt" />
    <!--追加日志内容-->
    <appendToFile value="true" />

    <!--防止多线程时不能写Log,官方说线程非安全-->
    <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />

    <!--可以为:Once|Size|Date|Composite-->
    <!--Composite为Size和Date的组合-->
    <rollingStyle value="Composite" />

    <!--当备份文件时,为文件名加的后缀-->
    <datePattern value="yyyyMMdd.TXT" />

    <!--日志最大个数,都是最新的-->
    <!--rollingStyle节点为Size时,只能有value个日志-->
    <!--rollingStyle节点为Composite时,每天有value个日志-->
    <maxSizeRollBackups value="20" />

    <!--可用的单位:KB|MB|GB-->
    <maximumFileSize value="3MB" />

    <!--置为true,当前最新日志文件名永远为file节中的名字-->
    <staticLogFileName value="true" />

    <!--输出级别在INFO和ERROR之间的日志-->
    <filter type="log4net.Filter.LevelRangeFilter">
      <param name="LevelMin" value="ALL" />
      <param name="LevelMax" value="FATAL" />
    </filter>
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date [%thread] %-5level %logger - %message%newline"/>
    </layout>
  </appender>
  <root>
    <priority value="ALL"/>
    <level value="ALL"/>
    <appender-ref ref="rollingAppender" />
  </root>
</log4net>