How do I add a Bearer Token to the header of a HTTP request?

问题

I am having trouble figuring out how to set authorization headers with authorization as the key and a bearer token as the value.

I have completed a web API with authentication built into it. i have tested it on postman and it all works. the problem is on post man i take the token copy past it to a new key and value, in the site i am not sure how to change those values in a Blazor project.

When entering a Get to the API at http://testapi.com/api/token/{username}/{password} the API sends back a code i need to take that code and put it in the header.

@page "/"
@inject HttpClient Http

<h1>Hello, world!</h1>

Welcome To The New Site

<EditForm Model="@use" OnValidSubmit="@HandleValidSubmit" OnInvalidSubmit="@HandleInvalidSubmit" Context="EditFormContext">
    <DataAnnotationsValidator />
    <DxFormLayout>
        <DxFormLayoutItem Caption="Username:" ColSpanMd="6">
            <Template>
                <DxTextBox @bind-Text="@use.username" />
            </Template>
        </DxFormLayoutItem>
        <DxFormLayoutItem Caption="Password:" ColSpanMd="6">
            <Template>
                <DxTextBox @bind-Text="@use.password" />
            </Template>
        </DxFormLayoutItem>
        <DxFormLayoutItem ColSpanMd="12">
            <Template>
                <ValidationSummary />
            </Template>
        </DxFormLayoutItem>
        <DxFormLayoutItem ColSpanMd="12">
            <Template>
                <button type="submit">Submit</button>
            </Template>
        </DxFormLayoutItem>
    </DxFormLayout>
</EditForm>

@code {
        User[] token;
        User use = new User();

        async void  HandleValidSubmit()
        {
            token = await Http.GetJsonAsync<User[]>("http://testapi.com/api/token/" + use.username + "/" + use.password);
            if (token != null)
            {
                await SaveToken();
                await SetAuthorizationHeader();
                Console.WriteLine("OnValidSubmit");
            }
        }
        private void HandleInvalidSubmit()
        {
            Console.WriteLine("OnInvalidSubmit");
        }

        private async Task SaveToken()
        {

        }

        private async Task SetAuthorizationHeader()
        {

        }

    class User
    {
        public string username { get; set; }
        public string password { get; set; }
    }
}

回答1:

I've got a similar setup with API / IdentityServer4 / Blazor(server-side). Maybe you can use some of my code I posted in this stackoverflow question.

回答2:

If you are using a server side Blazor @Pascal R. answer should bring you to the right path. For client side Blazor:

Save the token to globaly reachable storage for you app. Like local storage or in a Cascading value
Each time you need to make an authenticated ws call get the token from the storage and add it as header.

To save the token in local storage I recommend using: Blazored Local storage.

来源：https://stackoverflow.com/questions/57482189/how-do-i-add-a-bearer-token-to-the-header-of-a-http-request

标签

api

jwt

authorization

blazor