.Net MinimalApis响应返回值 - ToB企服应用市场:ToB评测及商务社交产业平台

Hello World

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//通过调用 ConfigureHttpJsonOptions 来全局配置应用的选项
builder.Services.ConfigureHttpJsonOptions(options =>
{
options.SerializerOptions.ReferenceHandler = ReferenceHandler.IgnoreCycles;//忽略循环引用
options.SerializerOptions.WriteIndented = true;
options.SerializerOptions.IncludeFields = true;
options.SerializerOptions.DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull;
});

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app.MapGet("/TestT", User () => new User() { Name = "Ruipeng", Email = "xxx@163.com", Age = 18 })
.WithSummary("测试类")
.Produces<User>();

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{
"name": "Ruipeng",
"email": "xxx@163.com",
"age": 18
}

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public interface IResultModel
{
/// <summary>
/// 是否成功
/// </summary>
bool? IsSuccess { get; }
/// <summary>
/// 错误信息
/// </summary>
string? Message { get; }
/// <summary>
/// 业务码，用于业务中自定义
/// </summary>
int? StatusCode { get; set; }
/// <summary>
/// 时间戳
/// </summary>
long? Timestamp { get; }
}
/// <summary>
/// 返回结果模型泛型接口
/// </summary>
/// <typeparam name="T"></typeparam>
public interface IResultModel<out T> : IResultModel
{
/// <summary>
/// 返回数据
/// </summary>
T? Data { get; }
}

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public class ResultModel<T> : IResultModel<T>
{
public ResultModel()
{
Timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
}
/// <summary>
/// 处理是否成功
/// </summary>
public bool? IsSuccess { get; set; }
/// <summary>
/// 错误信息
/// </summary>
public string? Message { get; set; }
/// <summary>
/// 业务码
/// </summary>
public int? StatusCode { get; set; }
/// <summary>
/// 时间戳
/// </summary>
public long? Timestamp { get; }
/// <summary>
/// 返回数据
/// </summary>
public T? Data { get; set; }
/// <summary>
/// 成功
/// </summary>
/// <param name="Data"></param>
public ResultModel<T> Success(T? data = default)
{
this.IsSuccess = true;
StatusCode = 200;
Data = data;
return this;
}
/// <summary>
/// 失败
/// </summary>
/// <param name="msg">说明</param>
/// <param name="code"></param>
public ResultModel<T> Failed(string? msg = "failed", int? code = 500)
{
IsSuccess = false;
Message = msg;
StatusCode = code;
return this;
}
}
/// <summary>
/// 返回结果
/// </summary>
public static class ResultModel
{
/// <summary>
/// 数据已存在
/// </summary>
/// <returns></returns>
public static IResultModel<string> HasExists => Failed("data already exists");
/// <summary>
/// 数据不存在
/// </summary>
public static IResultModel<string> NotExists => Failed("data doesn't exist");
/// <summary>
/// 成功
/// </summary>
/// <param name="data">返回数据</param>
/// <returns></returns>
public static IResultModel<T> Success<T>(T? data = default)
{
return new ResultModel<T>().Success(data);
}
/// <summary>
/// 成功
/// </summary>
/// <param name="task">任务</param>
/// <returns></returns>
public static async Task<IResultModel<T>> SuccessAsync<T>(Task<T>? task = default)
{
return task is not null && task != default ? new ResultModel<T>().Success(await task) : new ResultModel<T>();
}
/// <summary>
/// 成功
/// </summary>
/// <returns></returns>
public static IResultModel<string> Success()
{
return Success<string>();
}
/// <summary>
/// 失败
/// </summary>
/// <param name="error">错误信息</param>
/// <returns></returns>
public static IResultModel<T> Failed<T>(string? error = null)
{
return new ResultModel<T>().Failed(error ?? "failed");
}
/// <summary>
/// 失败
/// </summary>
/// <returns></returns>
public static IResultModel<string> Failed(string? error = null)
{
return Failed<string>(error);
}
/// <summary>
/// 根据布尔值返回结果
/// </summary>
/// <param name="success"></param>
/// <returns></returns>
public static IResultModel<T> Result<T>(bool success)
{
return success ? Success<T>() : Failed<T>();
}
/// <summary>
/// 根据布尔值返回结果
/// </summary>
/// <param name="success"></param>
/// <returns></returns>
public static async Task<IResultModel> Result(Task<bool> success)
{
return await success ? Success() : Failed();
}
/// <summary>
/// 根据布尔值返回结果
/// </summary>
/// <param name="success"></param>
/// <returns></returns>
public static IResultModel<string> Result(bool success)
{
return success ? Success() : Failed();
}
/// <summary>
/// 时间戳起始日期
/// </summary>
public static readonly DateTime TimestampStart = new(1970, 1, 1, 0, 0, 0, 0);
}

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app.MapGet("/TestResultModel", IResultModel (int age) =>
{
List<User> users = [new User() { Name = "Ruipeng", Email = "xxx@163.com", Age = 18 }];
return users.FirstOrDefault(_ => _.Age > age) is User user ? ResultModel.Success(user) : ResultModel.Failed();
})
.WithSummary("测试自定义IResultModel")
.Produces<IResultModel<User>>();

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{
"isSuccess": true,
"statusCode": 200,
"timestamp": 1711001093,
"data": {
"name": "Ruipeng",
"email": "xxx@163.com",
"age": 18
}

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[AttributeUsage(AttributeTargets.Method)]
public class EnableResponseWrapperAttribute : Attribute { }

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public class ResponseWrapperMiddleware(RequestDelegate next)
{
public async Task InvokeAsync(HttpContext context)
{
if (context.GetEndpoint()?.Metadata.GetMetadata<EnableResponseWrapperAttribute>() is not null)
{
// 存储原始响应体流
var originalResponseBodyStream = context.Response.Body;
try
{
// 创建内存流以捕获响应
using var memoryStream = new MemoryStream();
context.Response.Body = memoryStream;
// 调用管道中的下一个中间件
await next(context);
// 恢复原始响应体流并写入格式化结果
context.Response.Body = originalResponseBodyStream;
// 重置内存流位置并读取响应内容
memoryStream.Seek(0, SeekOrigin.Begin);
var readToEnd = await new StreamReader(memoryStream).ReadToEndAsync();
var objResult = JsonSerializer.Deserialize<dynamic>(readToEnd);
var result = new ResultModel<object>
{
Data = objResult,
IsSuccess = true,
StatusCode = context.Response.StatusCode
};
await context.Response.WriteAsJsonAsync(result as object);
}
finally
{
// 确保在出现异常时恢复原始响应体流
context.Response.Body = originalResponseBodyStream;
}
}
else
{
await next(context);
}
}
}

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app.UseMiddleware<ResponseWrapperMiddleware>();

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app.MapGet("/TestTestAutoWarpper", [EnableResponseWrapper] User () => new User() { Name = "Ruipeng", Email = "xxx@163.com", Age = 18 }).WithSummary("测试类")
.Produces<User>();

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{
"isSuccess": true,
"statusCode": 200,
"timestamp": 1711005201,
"data": {
"name": "Ruipeng",
"email": "xxx@163.com",
"age": 18
}
}

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//Return IResult
app.MapGet("/IResult/TestResult", IResult () => Results.Ok(new User() { Name = "Ruipeng", Email = "xxx@163.com", Age = 18 }));

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app.MapGet("/IResult/TestTypedResult", IResult () => TypedResults.Ok(new User() { Name = "Ruipeng", Email = "xxx@163.com", Age = 18 }));

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app.MapGet("/IResult/ReturnMultipleTypes", Results<Ok<User>, NotFound> (int age) =>
{
List<User> users = [new User() { Name = "Ruipeng", Email = "xxx@163.com", Age = 18 }];
return users.FirstOrDefault(_ => _.Age > age) is User user ? TypedResults.Ok(user) : TypedResults.NotFound();
});

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public static class ResultsExtensions
{
public static IResult Html(this IResultExtensions resultExtensions, string html)
{
ArgumentNullException.ThrowIfNull(resultExtensions);
return new HtmlResult(html);
}
}
class HtmlResult(string html) : IResult
{
private readonly string _html = html;
public Task ExecuteAsync(HttpContext httpContext)
{
httpContext.Response.ContentType = MediaTypeNames.Text.Html;
httpContext.Response.ContentLength = Encoding.UTF8.GetByteCount(_html);
return httpContext.Response.WriteAsync(_html);
}
}

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app.MapGet("/IResult/Html", () => Results.Extensions.Html(@$"<!doctype html>
<html>
<head><title>miniHTML</title></head>
<body>
<h1>Hello World</h1>
<p>The time on the server is {DateTime.Now:O}</p>
</body>
</html>"));

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<!DOCTYPE html>
<html>
<head>
<title>miniHTML</title>
</head>
<body>
<h1>Hello World</h1>
<p>The time on the server is 2024-03-21T17:31:36.2931959+08:00</p>
</body>
</html>

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var options = new JsonSerializerOptions(JsonSerializerDefaults.Web)
{ WriteIndented = true };
app.MapGet("/IResult/CustomJsonConfig", () =>
TypedResults.Json(new User() { Name = "Ruipeng", Email = "xxx@163.com", Age = 18 }, options));

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app.MapGet("/IResult/ProblemDetail", () =>
{
var problemDetail = new ProblemDetails()
{
Status = StatusCodes.Status500InternalServerError,
Title = "内部错误"
};
return TypedResults.Problem(problemDetail);
});

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{
"type": "https://tools.ietf.org/html/rfc9110#section-15.6.1",
"title": "内部错误",
"status": 500
}

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