mirror of
https://gitee.com/ThingsGateway/ThingsGateway.git
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659 lines
27 KiB
C#
659 lines
27 KiB
C#
#region copyright
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//------------------------------------------------------------------------------
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// 此代码版权声明为全文件覆盖，如有原作者特别声明，会在下方手动补充
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// 此代码版权（除特别声明外的代码）归作者本人Diego所有
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// 源代码使用协议遵循本仓库的开源协议及附加协议
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// Gitee源代码仓库：https://gitee.com/diego2098/ThingsGateway
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// Github源代码仓库：https://github.com/kimdiego2098/ThingsGateway
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// 使用文档：https://diego2098.gitee.io/thingsgateway-docs/
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// QQ群：605534569
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//------------------------------------------------------------------------------
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#endregion
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//------------------------------------------------------------------------------
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// 此代码版权（除特别声明或在XREF结尾的命名空间的代码）归作者本人若汝棋茗所有
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// 源代码使用协议遵循本仓库的开源协议及附加协议，若本仓库没有设置，则按MIT开源协议授权
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// CSDN博客：https://blog.csdn.net/qq_40374647
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// 哔哩哔哩视频：https://space.bilibili.com/94253567
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// Gitee源代码仓库：https://gitee.com/RRQM_Home
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// Github源代码仓库：https://github.com/RRQM
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// API首页：http://rrqm_home.gitee.io/touchsocket/
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// 交流QQ群：234762506
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// 感谢您的下载和使用
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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using System.Text;
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namespace ThingsGateway.Foundation.Http
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{
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/// <summary>
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/// Http扩展辅助
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/// </summary>
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public static class HttpExtensions
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{
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/// <summary>
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/// 根据字符串获取枚举
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="str"></param>
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/// <param name="result"></param>
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/// <returns></returns>
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public static bool GetEnum<T>(string str, out T result) where T : struct
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{
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return Enum.TryParse<T>(str, out result);
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}
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#region HttpBase
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#region 设置内容
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/// <summary>
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/// 从Json
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/// </summary>
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/// <param name="request"></param>
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/// <param name="value"></param>
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/// <returns></returns>
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public static T FromJson<T>(this T request, string value) where T : HttpBase
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{
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request.SetContent(Encoding.UTF8.GetBytes(value));
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request.Headers.Add(HttpHeaders.ContentType, "application/json;charset=UTF-8");
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return request;
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}
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/// <summary>
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/// 从文本
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/// </summary>
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/// <param name="request"></param>
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/// <param name="value"></param>
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/// <returns></returns>
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public static T FromText<T>(this T request, string value) where T : HttpBase
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{
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request.SetContent(Encoding.UTF8.GetBytes(value));
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request.Headers.Add(HttpHeaders.ContentType, "text/plain;charset=UTF-8");
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return request;
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}
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/// <summary>
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/// 从Xml格式
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/// </summary>
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/// <param name="request"></param>
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/// <param name="value"></param>
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/// <returns></returns>
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public static T FromXML<T>(this T request, string value) where T : HttpBase
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{
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request.SetContent(Encoding.UTF8.GetBytes(value));
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request.Headers.Add(HttpHeaders.ContentType, "application/xml;charset=UTF-8");
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return request;
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}
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#endregion 设置内容
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/// <summary>
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/// 获取Body的字符串
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/// </summary>
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/// <param name="httpBase"></param>
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/// <returns></returns>
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public static string GetBody(this HttpBase httpBase)
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{
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return httpBase.TryGetContent(out var data) ? Encoding.UTF8.GetString(data) : throw new Exception("获取数据体错误。");
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}
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/// <summary>
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/// 当数据类型为multipart/form-data时，获取boundary
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/// </summary>
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/// <param name="httpBase"></param>
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/// <returns></returns>
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/// <exception cref="Exception"></exception>
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public static string GetBoundary(this HttpBase httpBase)
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{
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if (httpBase.ContentType.IsNullOrEmpty())
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{
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return string.Empty;
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}
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var strs = httpBase.ContentType.Split(';');
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if (strs.Length == 2)
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{
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strs = strs[1].Split('=');
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if (strs.Length == 2)
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{
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return strs[1].Trim();
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}
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}
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return string.Empty;
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}
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/// <summary>
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/// 设置内容
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/// </summary>
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/// <param name="httpBase"></param>
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/// <param name="content"></param>
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/// <param name="encoding"></param>
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/// <returns></returns>
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public static T SetContent<T>(this T httpBase, string content, Encoding encoding = null) where T : HttpBase
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{
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httpBase.SetContent(Encoding.UTF8.GetBytes(content));
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return httpBase;
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}
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/// <summary>
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/// 设置数据体长度
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/// </summary>
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/// <param name="httpBase"></param>
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/// <param name="value"></param>
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public static T SetContentLength<T>(this T httpBase, long value) where T : HttpBase
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{
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httpBase.ContentLength = value;
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return httpBase;
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}
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/// <summary>
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/// 从扩展名设置内容类型，必须以“.”开头
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/// </summary>
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/// <param name="httpBase"></param>
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/// <param name="extension"></param>
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/// <returns></returns>
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public static T SetContentTypeByExtension<T>(this T httpBase, string extension) where T : HttpBase
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{
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var type = HttpTools.GetContentTypeFromExtension(extension);
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httpBase.ContentType = type;
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return httpBase;
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}
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/// <summary>
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/// 写入
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/// </summary>
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/// <param name="httpBase"></param>
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/// <param name="buffer"></param>
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public static T WriteContent<T>(this T httpBase, byte[] buffer) where T : HttpBase
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{
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httpBase.WriteContent(buffer, 0, buffer.Length);
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return httpBase;
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}
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#endregion HttpBase
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#region HttpRequest
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/// <summary>
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/// 获取多文件集合。如果不存在，则返回null。
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/// </summary>
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/// <typeparam name="TRequest"></typeparam>
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/// <param name="request"></param>
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/// <returns></returns>
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public static MultifileCollection GetMultifileCollection<TRequest>(this TRequest request) where TRequest : HttpRequest
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{
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return request.GetBoundary().IsNullOrEmpty() ? null : new MultifileCollection(request);
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}
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/// <summary>
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/// 初始化常规的请求头。
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/// <para>包含：</para>
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/// <list type="number">
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/// <item>Connection:keep-alive</item>
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/// <item>Pragma:no-cache</item>
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/// <item>UserAgent:ThingsGateway.Foundation.Http</item>
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/// <item>Accept:*/*</item>
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/// <item>AcceptEncoding:deflate, br</item>
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/// </list>
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/// </summary>
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/// <param name="request"></param>
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/// <returns></returns>
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public static TRequest InitHeaders<TRequest>(this TRequest request) where TRequest : HttpRequest
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{
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request.Headers.Add(HttpHeaders.Connection, "keep-alive");
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request.Headers.Add(HttpHeaders.Pragma, "no-cache");
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request.Headers.Add(HttpHeaders.UserAgent, "ThingsGateway.Foundation.Http");
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request.Headers.Add(HttpHeaders.Accept, "*/*");
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request.Headers.Add(HttpHeaders.AcceptEncoding, "deflate, br");
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return request;
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}
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/// <summary>
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/// 添加Host请求头
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/// </summary>
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/// <param name="request"></param>
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/// <param name="host"></param>
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/// <returns></returns>
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public static TRequest SetHost<TRequest>(this TRequest request, string host) where TRequest : HttpRequest
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{
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request.Headers.Add(HttpHeaders.Host, host);
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return request;
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}
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/// <summary>
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/// 对比不包含参数的Url。其中有任意一方为null，则均返回False。
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/// </summary>
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/// <param name="request"></param>
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/// <param name="url"></param>
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/// <returns></returns>
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public static bool UrlEquals<TRequest>(this TRequest request, string url) where TRequest : HttpRequest
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{
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return string.IsNullOrEmpty(request.RelativeURL) || string.IsNullOrEmpty(url)
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? false
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: request.RelativeURL.Equals(url, StringComparison.CurrentCultureIgnoreCase);
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}
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#region 设置函数
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/// <summary>
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/// 作为Delete访问
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/// </summary>
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/// <param name="request"></param>
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/// <returns></returns>
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public static TRequest AsDelete<TRequest>(this TRequest request) where TRequest : HttpRequest
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{
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request.Method = HttpMethod.Delete;
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return request;
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}
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/// <summary>
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/// 作为Get访问
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/// </summary>
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/// <param name="request"></param>
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/// <returns></returns>
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public static TRequest AsGet<TRequest>(this TRequest request) where TRequest : HttpRequest
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{
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request.Method = HttpMethod.Get;
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return request;
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}
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/// <summary>
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/// 作为指定函数
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/// </summary>
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/// <param name="request"></param>
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/// <param name="method"></param>
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/// <returns></returns>
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public static TRequest AsMethod<TRequest>(this TRequest request, string method) where TRequest : HttpRequest
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{
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request.Method = new HttpMethod(method);
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return request;
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}
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/// <summary>
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/// 作为Post访问
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/// </summary>
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/// <param name="request"></param>
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/// <returns></returns>
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public static TRequest AsPost<TRequest>(this TRequest request) where TRequest : HttpRequest
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{
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request.Method = HttpMethod.Post;
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return request;
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}
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/// <summary>
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/// 作为Put访问
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/// </summary>
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/// <param name="request"></param>
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/// <returns></returns>
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public static TRequest AsPut<TRequest>(this TRequest request) where TRequest : HttpRequest
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{
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request.Method = HttpMethod.Put;
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return request;
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}
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#endregion 设置函数
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#region 判断函数
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/// <summary>
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/// 是否作为Delete访问
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/// </summary>
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/// <param name="request"></param>
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/// <returns></returns>
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public static bool IsDelete<TRequest>(this TRequest request) where TRequest : HttpRequest
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{
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return request.Method == HttpMethod.Delete;
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}
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/// <summary>
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/// 是否作为Get访问
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/// </summary>
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/// <param name="request"></param>
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/// <returns></returns>
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public static bool IsGet<TRequest>(this TRequest request) where TRequest : HttpRequest
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{
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return request.Method == HttpMethod.Get;
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}
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/// <summary>
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/// 是否作为指定函数
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/// </summary>
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/// <param name="request"></param>
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/// <param name="method"></param>
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/// <returns></returns>
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public static bool IsMethod<TRequest>(this TRequest request, string method) where TRequest : HttpRequest
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{
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return request.Method == new HttpMethod(method);
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}
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/// <summary>
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/// 是否作为Post访问
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/// </summary>
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/// <param name="request"></param>
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/// <returns></returns>
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public static bool IsPost<TRequest>(this TRequest request) where TRequest : HttpRequest
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{
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return request.Method == HttpMethod.Post;
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}
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/// <summary>
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/// 是否作为Put访问
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/// </summary>
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/// <param name="request"></param>
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/// <returns></returns>
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public static bool IsPut<TRequest>(this TRequest request) where TRequest : HttpRequest
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{
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return request.Method == HttpMethod.Put;
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}
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#endregion 判断函数
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#region 判断属性
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/// <summary>
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/// 是否在headers中包含升级连接
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/// </summary>
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/// <param name="request"></param>
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/// <returns></returns>
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public static bool IsUpgrade<TRequest>(this TRequest request) where TRequest : HttpRequest
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{
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return string.Equals(request.Headers.Get(HttpHeaders.Connection), HttpHeaders.Upgrade.GetDescription(), StringComparison.OrdinalIgnoreCase);
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}
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#endregion 判断属性
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#endregion HttpRequest
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#region HttpResponse
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/// <summary>
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/// 设置文件类型。
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/// </summary>
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/// <param name="response"></param>
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/// <param name="fileName"></param>
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/// <returns></returns>
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public static TResponse SetContentTypeFromFileName<TResponse>(this TResponse response, string fileName) where TResponse : HttpResponse
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{
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var contentDisposition = $"attachment;filename={System.Web.HttpUtility.UrlEncode(fileName)}";
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response.Headers.Add(HttpHeaders.ContentDisposition, contentDisposition);
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return response;
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}
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/// <summary>
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/// 设置状态，并且附带时间戳。
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/// </summary>
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/// <param name="response"></param>
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/// <param name="status"></param>
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/// <param name="msg"></param>
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/// <returns></returns>
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public static TResponse SetStatus<TResponse>(this TResponse response, int status = 200, string msg = "Success") where TResponse : HttpResponse
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{
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response.StatusCode = status;
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response.StatusMessage = msg;
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response.Headers.Add(HttpHeaders.Server, $"ThingsGateway.Foundation.Http {HttpBase.ServerVersion}");
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response.Headers.Add(HttpHeaders.Date, DateTime.Now.ToGMTString("r"));
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return response;
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}
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/// <summary>
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/// 路径文件没找到
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/// </summary>
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/// <param name="response"></param>
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/// <returns></returns>
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public static TResponse UrlNotFind<TResponse>(this TResponse response) where TResponse : HttpResponse
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{
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response.SetContent("<html><body><h1>404 -RRQM Not Found</h1></body></html>");
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response.StatusCode = 404;
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response.ContentType = "text/html;charset=utf-8";
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return response;
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}
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#region FromFile
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/// <summary>
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/// 从文件响应。
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/// <para>当response支持持续写入时，会直接回复响应。并阻塞执行，直到完成。所以在执行该方法之前，请确保已设置完成所有状态字</para>
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/// <para>当response不支持持续写入时，会填充Content，且不会响应，需要自己执行Build，并发送。</para>
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/// </summary>
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/// <param name="response">响应</param>
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/// <param name="request">请求头，用于尝试续传，为null时则不续传。</param>
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/// <param name="filePath">文件路径</param>
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/// <param name="fileName">文件名，不设置时会获取路径文件名</param>
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/// <param name="maxSpeed">最大速度（仅企业版有效）。</param>
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/// <param name="bufferLen">读取长度。</param>
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/// <exception cref="Exception"></exception>
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/// <exception cref="Exception"></exception>
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/// <returns></returns>
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public static HttpResponse FromFile(this HttpResponse response, string filePath, HttpRequest request, string fileName = null, int maxSpeed = 1024 * 1024 * 10, int bufferLen = 1024 * 64)
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{
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using (var reader = FilePool.GetReader(filePath))
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{
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response.SetContentTypeByExtension(Path.GetExtension(filePath));
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var contentDisposition = $"attachment;filename={System.Web.HttpUtility.UrlEncode(fileName ?? Path.GetFileName(filePath))}";
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response.Headers.Add(HttpHeaders.ContentDisposition, contentDisposition);
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response.Headers.Add(HttpHeaders.AcceptRanges, "bytes");
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if (response.CanWrite)
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{
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HttpRange httpRange;
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var range = request?.Headers.Get(HttpHeaders.Range);
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if (string.IsNullOrEmpty(range))
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{
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response.SetStatus();
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response.ContentLength = reader.FileStorage.FileInfo.Length;
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httpRange = new HttpRange() { Start = 0, Length = reader.FileStorage.FileInfo.Length };
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}
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else
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{
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httpRange = HttpRange.GetRange(range, reader.FileStorage.FileInfo.Length);
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if (httpRange == null)
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{
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response.ContentLength = reader.FileStorage.FileInfo.Length;
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httpRange = new HttpRange() { Start = 0, Length = reader.FileStorage.FileInfo.Length };
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}
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else
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{
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response.SetContentLength(httpRange.Length)
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.SetStatus(206, "Partial Content");
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response.Headers.Add(HttpHeaders.ContentRange, string.Format("bytes {0}-{1}/{2}", httpRange.Start, httpRange.Length + httpRange.Start - 1, reader.FileStorage.FileInfo.Length));
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}
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}
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reader.Position = httpRange.Start;
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var surLen = httpRange.Length;
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var flowGate = new FlowGate
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{
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Maximum = maxSpeed
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};
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using (var block = new ByteBlock(bufferLen))
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{
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while (surLen > 0)
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{
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var r = reader.Read(block.Buffer, 0, (int)Math.Min(bufferLen, surLen));
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if (r == 0)
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{
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break;
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}
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flowGate.AddCheckWait(r);
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response.WriteContent(block.Buffer, 0, r);
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surLen -= r;
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}
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}
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}
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else
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{
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if (reader.FileStorage.FileInfo.Length > 1024 * 1024)
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{
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throw new OverlengthException("当该对象不支持写入时，仅支持1Mb以内的文件。");
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}
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using (var byteBlock = new ByteBlock((int)reader.FileStorage.FileInfo.Length))
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{
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using (var block = new ByteBlock(bufferLen))
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{
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while (true)
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{
|
||
var r = reader.Read(block.Buffer, 0, bufferLen);
|
||
if (r == 0)
|
||
{
|
||
break;
|
||
}
|
||
byteBlock.Write(block.Buffer, 0, r);
|
||
}
|
||
response.SetContent(byteBlock.ToArray());
|
||
}
|
||
}
|
||
}
|
||
}
|
||
return response;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 从文件响应。
|
||
/// <para>当response支持持续写入时，会直接回复响应。并阻塞执行，直到完成。所以在执行该方法之前，请确保已设置完成所有状态字</para>
|
||
/// <para>当response不支持持续写入时，会填充Content，且不会响应，需要自己执行Build，并发送。</para>
|
||
/// </summary>
|
||
/// <param name="context">上下文</param>
|
||
/// <param name="filePath">文件路径</param>
|
||
/// <param name="fileName">文件名，不设置时会获取路径文件名</param>
|
||
/// <param name="maxSpeed">最大速度（仅企业版有效）。</param>
|
||
/// <param name="bufferLen">读取长度。</param>
|
||
/// <exception cref="Exception"></exception>
|
||
/// <exception cref="Exception"></exception>
|
||
/// <returns></returns>
|
||
public static HttpResponse FromFile(this HttpContext context, string filePath, string fileName = null, int maxSpeed = 1024 * 1024 * 10, int bufferLen = 1024 * 64)
|
||
{
|
||
using (var reader = FilePool.GetReader(filePath))
|
||
{
|
||
context.Response.SetContentTypeByExtension(Path.GetExtension(filePath));
|
||
var contentDisposition = $"attachment;filename={System.Web.HttpUtility.UrlEncode(fileName ?? Path.GetFileName(filePath))}";
|
||
context.Response.Headers.Add(HttpHeaders.ContentDisposition, contentDisposition);
|
||
context.Response.Headers.Add(HttpHeaders.AcceptRanges, "bytes");
|
||
|
||
if (context.Response.CanWrite)
|
||
{
|
||
HttpRange httpRange;
|
||
var range = context.Request?.Headers.Get(HttpHeaders.Range);
|
||
if (string.IsNullOrEmpty(range))
|
||
{
|
||
context.Response.SetStatus();
|
||
context.Response.ContentLength = reader.FileStorage.FileInfo.Length;
|
||
httpRange = new HttpRange() { Start = 0, Length = reader.FileStorage.FileInfo.Length };
|
||
}
|
||
else
|
||
{
|
||
httpRange = HttpRange.GetRange(range, reader.FileStorage.FileInfo.Length);
|
||
if (httpRange == null)
|
||
{
|
||
context.Response.ContentLength = reader.FileStorage.FileInfo.Length;
|
||
httpRange = new HttpRange() { Start = 0, Length = reader.FileStorage.FileInfo.Length };
|
||
}
|
||
else
|
||
{
|
||
context.Response.SetContentLength(httpRange.Length)
|
||
.SetStatus(206, "Partial Content");
|
||
context.Response.Headers.Add(HttpHeaders.ContentRange, string.Format("bytes {0}-{1}/{2}", httpRange.Start, httpRange.Length + httpRange.Start - 1, reader.FileStorage.FileInfo.Length));
|
||
}
|
||
}
|
||
reader.Position = httpRange.Start;
|
||
var surLen = httpRange.Length;
|
||
var flowGate = new FlowGate
|
||
{
|
||
Maximum = maxSpeed
|
||
};
|
||
|
||
using (var block = new ByteBlock(bufferLen))
|
||
{
|
||
while (surLen > 0)
|
||
{
|
||
var r = reader.Read(block.Buffer, 0, (int)Math.Min(bufferLen, surLen));
|
||
if (r == 0)
|
||
{
|
||
break;
|
||
}
|
||
flowGate.AddCheckWait(r);
|
||
context.Response.WriteContent(block.Buffer, 0, r);
|
||
surLen -= r;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (reader.FileStorage.FileInfo.Length > 1024 * 1024)
|
||
{
|
||
throw new OverlengthException("当该对象不支持写入时，仅支持1Mb以内的文件。");
|
||
}
|
||
|
||
using (var byteBlock = new ByteBlock((int)reader.FileStorage.FileInfo.Length))
|
||
{
|
||
using (var block = new ByteBlock(bufferLen))
|
||
{
|
||
while (true)
|
||
{
|
||
var r = reader.Read(block.Buffer, 0, bufferLen);
|
||
if (r == 0)
|
||
{
|
||
break;
|
||
}
|
||
byteBlock.Write(block.Buffer, 0, r);
|
||
}
|
||
context.Response.SetContent(byteBlock.ToArray());
|
||
}
|
||
}
|
||
}
|
||
}
|
||
return context.Response;
|
||
}
|
||
|
||
#endregion FromFile
|
||
|
||
#region FromFileAsync
|
||
|
||
/// <summary>
|
||
/// 从文件响应。
|
||
/// <para>当response支持持续写入时，会直接回复响应。并阻塞执行，直到完成。所以在执行该方法之前，请确保已设置完成所有状态字</para>
|
||
/// <para>当response不支持持续写入时，会填充Content，且不会响应，需要自己执行Build，并发送。</para>
|
||
/// </summary>
|
||
/// <param name="response">响应</param>
|
||
/// <param name="request">请求头，用于尝试续传，为null时则不续传。</param>
|
||
/// <param name="filePath">文件路径</param>
|
||
/// <param name="fileName">文件名，不设置时会获取路径文件名</param>
|
||
/// <param name="maxSpeed">最大速度（仅企业版有效）。</param>
|
||
/// <param name="bufferLen">读取长度。</param>
|
||
/// <exception cref="Exception"></exception>
|
||
/// <exception cref="Exception"></exception>
|
||
/// <returns></returns>
|
||
public static Task<HttpResponse> FromFileAsync(this HttpResponse response, string filePath, HttpRequest request, string fileName = null, int maxSpeed = 1024 * 1024 * 10, int bufferLen = 1024 * 64)
|
||
{
|
||
return Task.Run(() =>
|
||
{
|
||
return FromFile(response, filePath, request, fileName, maxSpeed, bufferLen);
|
||
});
|
||
}
|
||
|
||
/// <summary>
|
||
/// 从文件响应。
|
||
/// <para>当response支持持续写入时，会直接回复响应。并阻塞执行，直到完成。所以在执行该方法之前，请确保已设置完成所有状态字</para>
|
||
/// <para>当response不支持持续写入时，会填充Content，且不会响应，需要自己执行Build，并发送。</para>
|
||
/// </summary>
|
||
/// <param name="context">上下文</param>
|
||
/// <param name="filePath">文件路径</param>
|
||
/// <param name="fileName">文件名，不设置时会获取路径文件名</param>
|
||
/// <param name="maxSpeed">最大速度（仅企业版有效）。</param>
|
||
/// <param name="bufferLen">读取长度。</param>
|
||
/// <exception cref="Exception"></exception>
|
||
/// <exception cref="Exception"></exception>
|
||
/// <returns></returns>
|
||
public static Task<HttpResponse> FromFileAsync(this HttpContext context, string filePath, string fileName = null, int maxSpeed = 1024 * 1024 * 10, int bufferLen = 1024 * 64)
|
||
{
|
||
return Task.Run(() =>
|
||
{
|
||
return FromFile(context, filePath, fileName, maxSpeed, bufferLen);
|
||
});
|
||
}
|
||
|
||
#endregion FromFileAsync
|
||
|
||
#endregion HttpResponse
|
||
}
|
||
} |