使用WebApi+Vue3从0到1搭建《权限管理系统》:二、搭建JWT系统鉴权

 /*jwt鉴权*/  "JwtSetting": {    "Issuer": "zhangsan", //发行人    "Audience": "zhangsan", //订阅人    "ExpireSeconds": 120, //过期时间，默认分钟    "ENAlgorithm": "HS256", //秘钥算法     "SecurityKey": "Zmz=Start2024013OverallAuth.WebApi" //秘钥构成  },

/// <summary> /// jwt 配置模型 /// </summary> public class JwtSettingModel {     /// <summary>     /// 发行人     /// </summary>     public string Issuer { get; set; }      /// <summary>     /// 订阅人     /// </summary>     public string Audience { get; set; }      /// <summary>     /// 过期时间，默认分钟     /// </summary>     public int  ExpireSeconds { get; set; }      /// <summary>     /// 秘钥算法     /// </summary>     public string ENAlgorithm { get; set; }      /// <summary>     /// 秘钥构成     /// </summary>     public string SecurityKey { get; set; }  }

 /// <summary>  /// 配置文件解析帮助类  /// </summary>  public class ConfigurationHelper  {      /// <summary>      /// 配置项      /// </summary>      public static IConfiguration configuration { get; set; }       /// <summary>      /// 构造实例化      /// </summary>      static ConfigurationHelper()       {          configuration = new ConfigurationBuilder().Add(new JsonConfigurationSource { Path = "appsettings.json", ReloadOnChange = true }).Build();      }       /// <summary>      /// 获取appsetings 配置节点      /// </summary>      /// <typeparam name="T"></typeparam>      /// <param name="node"></param>      /// <returns></returns>      public static T GetNode<T>(string node) where T : new()       {          T mode = configuration.GetSection(node).Get<T>();          return mode;      }   }

 //添加jwt鉴权  services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme).AddJwtBearer(JwtBearerDefaults.AuthenticationScheme, option =>  {      var jwtsetting = ConfigurationHelper.GetNode<JwtSettingModel>("JwtSetting");      Configuration.Bind("JwtSetting", jwtsetting);      option.SaveToken = true;      option.TokenValidationParameters = new TokenValidationParameters()      {          ValidIssuer = jwtsetting.Issuer,//发行人          ValidAudience = jwtsetting.Audience,//订阅人          IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(jwtsetting.SecurityKey)),//解密的密钥          ValidateIssuerSigningKey = true,//是否验证签名,不验证的画可以篡改数据，不安全          ValidateIssuer = true,//是否验证发行人，就是验证载荷中的Iss是否对应ValidIssuer参数          ValidateAudience = true,//是否验证订阅人，就是验证载荷中的Aud是否对应ValidAudience参数          ValidateLifetime = true,//是否验证过期时间，过期了就拒绝访问          ClockSkew = TimeSpan.Zero,//这个是token缓冲过期时间,如果设置了，token过期时间就是缓冲时间+过期时间          //RequireExpirationTime = true,      };   });

/// <summary> /// jwt帮助类 /// </summary> public static class JwtHelper {     /// <summary>     /// 生成token     /// </summary>     /// <param name="loginResult"></param>     /// <returns></returns>     public static string BuildToken(LoginModel loginResult)     {         LoginModel result = new();         var jwtsetting = ConfigurationHelper.GetNode<JwtSettingModel>("JwtSetting");          //获取登录信息         var calime = loginResult.PropValueType().Select(x => new Claim(x.Name, x.Value.ToString(), x.Type)).ToList();          //记录登录信息         var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(jwtsetting.SecurityKey));         var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);         var header = new JwtHeader(creds);         var paylod = new JwtPayload(jwtsetting.Issuer, jwtsetting.Audience, calime, DateTime.Now, DateTime.Now.AddMinutes(jwtsetting.ExpireSeconds));          //正式创建令牌         var token = new JwtSecurityToken(header, paylod);         var tokenStr = new JwtSecurityTokenHandler().WriteToken(token);         var  ddd = token.ValidTo.AddHours(8).ToString();         return tokenStr;     }      /// <summary>     /// 反射获取字段信息     /// </summary>     /// <param name="obj">模型</param>     /// <returns></returns>     public static IEnumerable<(string Name, object Value, string Type)> PropValueType(this object obj)     {         List<(string a, object b, string c)> result = new();         var type = obj.GetType();         var props = type.GetProperties();         foreach (var item in props)         {             result.Add((item.Name, item.GetValue(obj), item.PropertyType.Name));         }         return result;     } }

 //把jwt添加到swagger中  optinos.AddSecurityDefinition("OverallAuth.WebApi", new OpenApiSecurityScheme  {      Description = "直接在下框中输入Bearer token（注意两者之间是一个空格）",      Name = "Authorization",//jwt默认的参数名称      In = ParameterLocation.Header,//jwt默认存放请求头中      Type = SecuritySchemeType.ApiKey  });   //swagger遵守jwt授权协议  optinos.AddSecurityRequirement(new OpenApiSecurityRequirement      {         {              new OpenApiSecurityScheme{                  Reference = new OpenApiReference {                              Type = ReferenceType.SecurityScheme,                              Id = "OverallAuth.WebApi"                  }             },new string[] { }          }      });