.Net Core使用JWT
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2024-01-29 17:28:04
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.Net Core使用JWT
1.新建WebApi项目JwtDemo
2.通过nuget安装JWT.Net 根据你的版本自行选择合适的版本
3.分别建立三个实体类LoginDto,PlayloadDto,TokenDto
public class LoginDto {
public string UserId { get; set; }
public string Password { get; set; }
}
public class PlayloadDto {
public string UserId { get; set; }
public List<string> Roles { get; set; }
public DateTime? ExpiryDateTime { get; set; }
}
public class TokenDto {
public bool Success { get; set; }
public string Token { get; set; }
public string Message { get; set; }
}
4.新建TokenController用于验证用户信息获取Token信息
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using JwtDemo.Dto;
using Microsoft.AspNetCore.Mvc;
using JWT;
using JWT.Algorithms;
using JWT.Serializers;
using System.Text;
namespace JwtDemo.Controllers
{
[Route("api/[controller]/[action]")]
[ApiController]
public class TokenController : Controller {
private const string secretKey = "sfdkjskdlfnnierljewlkjsffd";
[HttpPost]
public TokenDto GetToken(LoginDto loginDto) {
TokenDto tokenInfo = new TokenDto();
if (loginDto.UserId=="1646" && loginDto.Password == "123456") {
PlayloadDto playloadDto = new PlayloadDto() { UserId = loginDto.UserId, Roles = new List<string> {"1001"}, ExpiryDateTime = DateTime.Now.AddMinutes(30) };
try {
byte[] key = Encoding.UTF8.GetBytes(secretKey);
IJwtAlgorithm algorithm = new HMACSHA256Algorithm();//加密方式
IJsonSerializer serializer = new JsonNetSerializer();//序列化
IBase64UrlEncoder urlEncoder = new JwtBase64UrlEncoder();//base64加解密
IJwtEncoder encoder = new JwtEncoder(algorithm, serializer, urlEncoder);
var token = encoder.Encode(playloadDto, key);//生成令牌
tokenInfo.Success = true;
tokenInfo.Token = token;
tokenInfo.Message = "ok";
}
catch(Exception e) {
tokenInfo.Success = false;
tokenInfo.Message = e.InnerException.ToString();
}
}
return tokenInfo;
}
}
}
得到相应的token信息
5.新建过滤器ApiAuthorityAttribute 用于验证token信息的正确性
using Microsoft.AspNetCore.Mvc.Filters;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using JWT;
using JWT.Serializers;
using JwtDemo.Dto;
using JwtDemo.Common;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
using JWT.Algorithms;
using System.Text;
using Microsoft.AspNetCore.Mvc;
namespace JwtDemo.Filter {
public class ApiAuthorityAttribute : Attribute, IAuthorizationFilter {
private const string secretKey = "sfdkjskdlfnnierljewlkjsffd";
public void OnAuthorization(AuthorizationFilterContext context) {
var controller = context.RouteData.Values["controller"].ToString();
var action = context.RouteData.Values["action"].ToString();
var httpcontext = ServiceGetter.ServiceProvider.GetRequiredService<IHttpContextAccessor>().HttpContext;
//取得header中的auth的token信息
var authHeader = from t in httpcontext.Request.Headers where t.Key == "auth" select t.Value.FirstOrDefault();
if (authHeader != null) {
try {
string token = authHeader.FirstOrDefault();
byte[] key = Encoding.UTF8.GetBytes(secretKey);
IJsonSerializer serializer = new JsonNetSerializer();//序列化
IDateTimeProvider provider = new UtcDateTimeProvider();
IJwtValidator validator = new JwtValidator(serializer, provider);
IBase64UrlEncoder urlEncoder = new JwtBase64UrlEncoder();//base64加解密
IJwtAlgorithm algorithm = new HMACSHA256Algorithm();//加密方式
IJwtDecoder decoder = new JwtDecoder(serializer, validator, urlEncoder, algorithm);
//解密
var json = decoder.DecodeToObject<PlayloadDto>(token, key, verify: true);
if(json != null) {
if (json.ExpiryDateTime < DateTime.Now) {
httpcontext.Response.WriteAsync("0你的Token验证不通过");
context.Result = new EmptyResult();//加入此句代码就不会继续执行action
return;
}
}
}
catch(Exception e) {
context.Result = new EmptyResult();//加入此句代码就不会继续执行action
return;
}
}
}
}
}
6.将此过滤器应用到api接口上,将获取到的token信息放到header中键值为auth项中,然后发送请求,就可以通过此过滤器验证了
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