这应该可以解决以下问题：

app.UseSwaggerUI(c => {
  c.InjectJavascript("https://cdnjs.cloudflare.com/ajax/libs/swagger-ui/4.1.3/swagger-ui-bundle.js", "text/javascript");
  c.SwaggerEndpoint($"/swagger/{_swaggerVersion}/swagger.json", _appSettings.ApiName);
});

我被这个问题困扰得很厉害，它发生得太突然了，我无法测试我的API端点，不知何故，当Swagger页面加载到客户端页面时，它没有从swagger-ui中获取必要的包。

• • 解决方案**

在app.UseSwaggerUI()方法中手动注入脚本和样式对我很有效：

string myApiVersion = "v1";
string myAppName = "CareMatchPro";
string swaggerVersion = "4.15.5";

builder.Services.AddSwaggerGen(c =>
....

var app = builder.Build();
app.UseSwagger();
....

string pkgUrl = "https://unpkg.com/swagger-ui-dist@";
app.UseSwaggerUI(c => {
    c.HeadContent = 
        $"<link rel=\"stylesheet\" type=\"text/css\" " +
        $"href=\"{pkgUrl}{swaggerVersion}/swagger-ui.css\" />";
    c.InjectStylesheet($"{pkgUrl}{swaggerVersion}/swagger-ui.css", "text/css");
    c.InjectJavascript($"{pkgUrl}{swaggerVersion}/swagger-ui-standalone-preset.js", "text/javascript");
    c.InjectJavascript($"{pkgUrl}{swaggerVersion}/swagger-ui-bundle.js", "text/javascript");
    c.SwaggerEndpoint($"/swagger/{myApiVersion}/swagger.json", myAppName);
});

我希望这能帮助大家避免浪费时间--弥补我浪费的时间......：）