.net core api接口如何实现JWT方式认证Token

这篇文章主要介绍.net core api接口如何实现JWT方式认证Token，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

一、项目>管理Nuget包 安装

二、.appsettings.json添加

"JWT": {    "Secret": "~!@#$%^&*()_+qwertyuiopasldkh[o51485421ajshk^%*)kasd", // 密钥    "Issuer": "kfjdhf", // 颁发者    "Audience": "kfjdhf", // 接收者    //"Expired": 30 // 过期时间（30min）  }

三、ConfigureServices注入jwt

 #region 注册JWT             //获取配置文件            var JWTConfig = Configuration.GetSection("JWT");            //生成密钥            var symmetricKeyAsBase64 = JWTConfig.GetValue<string>("Secret");            var keyByteArray = Encoding.ASCII.GetBytes(symmetricKeyAsBase64);            var signingKey = new SymmetricSecurityKey(keyByteArray);             //认证参数            services.AddAuthentication("Bearer")                .AddJwtBearer(o =>                {                    o.TokenValidationParameters = new TokenValidationParameters                    {                        ValidateIssuerSigningKey = true,//是否验证签名,不验证的画可以篡改数据，不安全                        IssuerSigningKey = signingKey,//解密的密钥                        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                        ValidIssuer = JWTConfig.GetValue<string>("Iss"),//发行人                        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                        ValidAudience = JWTConfig.GetValue<string>("Aud"),//订阅人                        ValidateLifetime = true,//是否验证过期时间，过期了就拒绝访问                        ClockSkew = TimeSpan.Zero,//这个是缓冲过期时间，也就是说，即使我们配置了过期时间，这里也要考虑进去，过期时间+缓冲，默认好像是7分钟，你可以直接设置为0                        RequireExpirationTime = true,                    };                });            #endregion

(2).Configure启用

app.UseAuthentication();//jwt

四、创建jwt帮助类

using Microsoft.Extensions.Configuration;using Microsoft.IdentityModel.Tokens;using System;using System.Collections.Generic;using System.IdentityModel.Tokens.Jwt;using System.Linq;using System.Security.Claims;using System.Text; namespace SystemAPi.JWT{        public class JwtHelper        {            public JwtHelper(IConfiguration configuration)            {                Configuration = configuration;            }            /// <summary>            /// 配置属性            /// </summary>            public IConfiguration Configuration { get; }            /// <summary>            /// 生成Token            /// </summary>            /// <returns></returns>            public string GenerateToken(List<Claim> claims)            {                var jwtConfig = Configuration.GetSection("Jwt");                //秘钥，就是标头，这里用Hmacsha256算法，需要256bit的密钥                var securityKey = new SigningCredentials(new SymmetricSecurityKey(Encoding.ASCII.GetBytes(jwtConfig.GetValue<string>("Secret"))), SecurityAlgorithms.HmacSha256);                //Claim，JwtRegisteredClaimNames中预定义了好多种默认的参数名，也可以像下面的Guid一样自己定义键名.                //ClaimTypes也预定义了好多类型如role、email、name。Role用于赋予权限，不同的角色可以访问不同的接口                //相当于有效载荷                List<Claim> baseClaims = new List<Claim>{                new Claim(JwtRegisteredClaimNames.Iss,jwtConfig.GetValue<string>("Issuer")),                new Claim(JwtRegisteredClaimNames.Aud,jwtConfig.GetValue<string>("Audience")),                new Claim("Guid",Guid.NewGuid().ToString("D")),                new Claim(ClaimTypes.Role,"admin"),             };                claims = claims.Union<Claim>(baseClaims).ToList<Claim>();//合并Claim，删除重复项目                 SecurityToken securityToken = new JwtSecurityToken(                    signingCredentials: securityKey,                    expires: DateTime.Now.AddDays(1),//过期时间                    claims: claims                );                //生成jwt令牌                return new JwtSecurityTokenHandler().WriteToken(securityToken);            }        }    }

五、测试登录成功把账户信息存进token

 /// 登录        /// </summary>        /// <returns>登录</returns>        [HttpGet]         public ReturnJson login(string name, string pwd)        {                        User data = bll.login(name, pwd);            if (data!=null)            {                if (data.name == name && data.password == pwd)                {                    List<Claim> claims = new List<Claim>() {                    new Claim(ClaimTypes.NameIdentifier, data.name),                    new Claim(ClaimTypes.Role,data.AdminId.ToString()),                    new Claim("AdminRole",data.AdminId.ToString())                    };                    string token=jwtHelper.GenerateToken(claims);                      return new ReturnJson<string>().Success(token);                                                      };                          }            return new ReturnJson().Fail();        }

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