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asp.nettoken怎样进行刷新

小樊
84
2024-12-06 14:51:15
栏目: 编程语言

在ASP.NET Core中,使用Json Web Token (JWT)进行身份验证时,有时需要刷新令牌。为了实现这一点,你可以使用Microsoft.AspNetCore.Authentication.JwtBearer包中的RefreshToken功能。以下是如何刷新令牌的步骤:

  1. 首先,确保在Startup.cs文件中为JWT身份验证配置了RefreshToken中间件:
public void ConfigureServices(IServiceCollection services)
{
    // ...其他服务配置...

    services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
        .AddJwtBearer(options =>
        {
            options.RequireHttpsMetadata = true;
            options.SaveToken = true;
            options.TokenValidationParameters = new TokenValidationParameters
            {
                ValidateIssuerSigningKey = true,
                IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(Configuration["JwtSecret"])),
                ValidateIssuer = false,
                ValidateAudience = false
            };
        })
        .AddJwtBearer<JwtBearerOptions>(options =>
        {
            options.SaveToken = true;
        })
        .AddRefreshToken();
}

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    // ...其他中间件配置...

    app.UseAuthentication();
    app.UseAuthorization();

    // ...其他中间件配置...
}
  1. 在你的控制器中,使用[Authorize]属性保护需要身份验证的路由。同时,添加一个用于处理令牌刷新的端点:
[Authorize]
public class AccountController : ControllerBase
{
    // ...其他控制器方法...

    [HttpPost("refresh-token")]
    public async Task<IActionResult> RefreshToken([FromBody] RefreshTokenRequest request)
    {
        var claims = new[]
        {
            new Claim(ClaimTypes.Name, request.Username),
            new Claim(ClaimTypes.Email, request.Email)
        };

        var identity = new ClaimsIdentity(claims, JwtBearerDefaults.AuthenticationScheme);
        var principal = new ClaimsPrincipal(identity);

        var tokenHandler = new JwtSecurityTokenHandler();
        var key = Encoding.UTF8.GetBytes(Configuration["JwtSecret"]);
        var tokenDescriptor = new SecurityTokenDescriptor
        {
            Subject = principal,
            Expires = DateTime.UtcNow.AddMinutes(30),
            SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(key), SecurityAlgorithms.HmacSha256Signature)
        };

        var newToken = tokenHandler.CreateToken(tokenDescriptor);
        var newJwtToken = tokenHandler.WriteToken(newToken);

        return Ok(new JwtTokenResponse { Token = newJwtToken });
    }
}
  1. 创建一个RefreshTokenRequest模型,用于接收客户端发送的刷新令牌请求:
public class RefreshTokenRequest
{
    public string Username { get; set; }
    public string Email { get; set; }
    public string RefreshToken { get; set; }
}
  1. 创建一个JwtTokenResponse模型,用于返回新的JWT令牌:
public class JwtTokenResponse
{
    public string Token { get; set; }
}

现在,当客户端的访问令牌过期时,它可以发送一个包含刷新令牌的请求到/account/refresh-token端点。服务器将验证刷新令牌,生成一个新的JWT令牌,并将其返回给客户端。

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