基于Blazor WebAssembly的C#获取Netlify环境变量值方案

一、使用Netlify CLI的env命令获取环境变量 #

1. 先确保你已安装Netlify CLI并完成登录：

   npm install -g netlify-cli
   netlify login
   

2. 获取单个环境变量：

   # 切换到站点目录后执行
   netlify env:get API_KEY
   # 或者指定站点ID（无需切换目录）
   netlify env:get API_KEY --site YOUR_SITE_ID
   

3. 列出所有环境变量：

   netlify env:list
   

二、C#实现方案 #

方案1：调用Netlify CLI命令 #

适合本地开发场景，依赖已安装并登录的Netlify CLI：

using System.Diagnostics;

public static string FetchNetlifyEnvVar(string variableName, string siteId = null)
{
    var cliArgs = string.IsNullOrEmpty(siteId) 
        ? $"env:get {variableName}" 
        : $"env:get {variableName} --site {siteId}";

    var processStartInfo = new ProcessStartInfo
    {
        FileName = "netlify",
        Arguments = cliArgs,
        RedirectStandardOutput = true,
        RedirectStandardError = true,
        UseShellExecute = false,
        CreateNoWindow = true
    };

    using var process = Process.Start(processStartInfo);
    process.WaitForExit();

    var output = process.StandardOutput.ReadToEnd().Trim();
    var errorMsg = process.StandardError.ReadToEnd().Trim();

    if (!string.IsNullOrEmpty(errorMsg))
        throw new InvalidOperationException($"CLI执行错误: {errorMsg}");

    return output;
}

// 使用示例
try
{
    string apiKey = FetchNetlifyEnvVar("API_KEY", "你的站点ID");
    Console.WriteLine($"获取到的API Key: {apiKey}");
}
catch (Exception ex)
{
    Console.WriteLine($"获取失败: {ex.Message}");
}

方案2：调用Netlify API（无需CLI） #

适合服务器或自动化场景，需要生成Netlify个人访问令牌（在账户设置的「Applications」→「Personal access tokens」中创建）：

注意：如果你的API_KEY标记为敏感变量，通过API获取时Value字段会返回null，这种情况只能用CLI方案获取实际值。

using System.Net.Http.Headers;
using System.Text.Json;

public class NetlifyEnvironmentVariable
{
    public string Key { get; set; }
    public string Value { get; set; }
    public bool Sensitive { get; set; }
}

public static async Task<string> FetchNetlifyEnvVarViaApi(string variableName, string siteId, string accessToken)
{
    using var httpClient = new HttpClient();
    httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);

    var response = await httpClient.GetAsync($"https://api.netlify.com/api/v1/sites/{siteId}/env");
    response.EnsureSuccessStatusCode();

    var envVars = await JsonSerializer.DeserializeAsync<List<NetlifyEnvironmentVariable>>(
        await response.Content.ReadAsStreamAsync(),
        new JsonSerializerOptions { PropertyNameCaseInsensitive = true }
    );

    var targetVar = envVars.FirstOrDefault(v => v.Key.Equals(variableName, StringComparison.OrdinalIgnoreCase));
    if (targetVar == null)
        throw new KeyNotFoundException($"未找到环境变量: {variableName}");

    return targetVar.Value;
}

// 使用示例
try
{
    string apiKey = await FetchNetlifyEnvVarViaApi(
        "API_KEY", 
        "你的站点ID", 
        "你的Netlify个人访问令牌"
    );
    Console.WriteLine($"获取到的API Key: {apiKey}");
}
catch (Exception ex)
{
    Console.WriteLine($"获取失败: {ex.Message}");
}

内容的提问来源于stack exchange，提问作者mythoslife