通用 HTTP 签名组件的另类实现方式
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1、初衷
开发中经常需要做一些接口的签名生成和校验工作，最开始的时候都是每个接口去按照约定单独实现，久而久之就变的非常难维护，因此就琢磨怎么能够写了一个比较通用的签名生成工具。
2、思路
采用链式调用的方式，使得签名的步骤可以动态拼凑组合。
3、直接看效果
//设置数据源
var signSource = new Dictionary<string, string>()
{
{ "param1", "1" },
{ "param3", "3+" },
{ "param2", "2" }
};
var signer = new HttpSigner();
signer.SetSignData(signSource);
//设置数据源并配置规则
signer.SetSignData(signSource, setting =>
{
//按参数名排序
//result --> param1 param2 param3
setting.IsOrderByWithKey = false;
//是否对签名数据的参数值进行UrlEncode
setting.IsDoUrlEncodeForSourceValue = false;
//签名主体是否包含参数名
setting.IsSignTextContainKey = true;
//签名主体中参数和参数值的连接符（需要启用IsSignTextContainKey）
setting.SignTextKeyValueSeparator = "=";
//签名主体中不同参数项的连接符
setting.SignTextItemSeparator = "&";
//以上都开启后 --> param1=1¶m2=2¶m3=3
//编码
setting.DefaultEncoding = Encoding.UTF8;
});
//签名主体设置前缀
signer.SetSignData(signSource).SetSignTextPrefix("TestPrefix");
//签名主体设置后缀
signer.SetSignData(signSource).SetSignTextSuffix("TestSuffix");
//签名主体进行Base64
signer.SetSignData(signSource).SetSignTextBase64();
//签名主体进行MD5,(方法参数为签名结果是否转小写)
signer.SetSignData(signSource).SetSignTextMD5(bool isToLower = true);
//签名主体进行SHA1,(方法参数为签名结果是否转小写)
signer.SetSignData(signSource).SetSignTextSHA1(bool isToLower = true);
//获取签名结果
string signString = signer.SetSignData(signSource).GetSignResult();
//组合调用
string signString = signer.SetSignData(signSource).SetSignTextBase64().SetSignTextMD5().SetSignTextSHA1();4、代码实现
HttpSignItem类
用于保存签名的参数集合。
namespace JiuLing.CommonLibs.Security.HttpSign
{
internal class HttpSignItem
{
public string Key { get; set; }
public string Value { get; set; }
public HttpSignItem(string key, string value)
{
Key = key;
Value = value;
}
}
}HttpSignSetting类
用于签名的基本配置。
using System.Text;
namespace JiuLing.CommonLibs.Security.HttpSign
{
/// <summary>
/// 签名配置
/// </summary>
public class HttpSignSetting
{
/// <summary>
/// 是否按参数名进行排序
/// </summary>
public bool IsOrderByWithKey { get; set; } = false;
/// <summary>
/// 是否对签名数据的参数值进行UrlEncode
/// </summary>
public bool IsDoUrlEncodeForSourceValue { get; set; } = false;
/// <summary>
/// 签名主体是否包含参数名
/// </summary>
public bool IsSignTextContainKey { get; set; } = true;
/// <summary>
/// 签名主体中参数和参数值的连接符（需要启用IsSignTextContainKey）
/// </summary>
public string SignTextKeyValueSeparator { get; set; } = "=";
/// <summary>
/// 签名主体中不同参数项的连接符
/// </summary>
public string SignTextItemSeparator { get; set; } = "&";
/// <summary>
/// 编码
/// </summary>
public Encoding DefaultEncoding { get; set; } = Encoding.UTF8;
}
}HttpSigner类
签名组件的具体实现。
using System;
using System.Collections.Generic;
using System.Linq;
namespace JiuLing.CommonLibs.Security.HttpSign
{
/// <summary>
/// 网络请求签名工具
/// </summary>
public class HttpSigner
{
/// <summary>
/// 签名配置
/// </summary>
private readonly HttpSignSetting _setting = new HttpSignSetting();
/// <summary>
/// 最终的签名串
/// </summary>
private string _signString;
/// <summary>
/// 设置签名数据
/// </summary>
/// <param name="signSource">待签名的键值对</param>
/// <param name="setting">配置签名规则</param>
/// <returns></returns>
/// <exception cref="ArgumentException"></exception>
public HttpSigner SetSignData(Dictionary<string, string> signSource, Action<HttpSignSetting> setting = null)
{
setting?.Invoke(_setting);
if (_setting == null)
{
throw new ArgumentNullException("无效的签名配置", "setting");
}
if (signSource == null || signSource.Count == 0)
{
throw new ArgumentException("待签名数据异常", nameof(signSource));
}
var signSourceList = new List<HttpSignItem>(signSource.Count);
foreach (var item in signSource)
{
var itemValue = item.Value;
if (_setting.IsDoUrlEncodeForSourceValue)
{
itemValue = System.Web.HttpUtility.UrlEncode(itemValue, _setting.DefaultEncoding);
}
signSourceList.Add(new HttpSignItem(item.Key, itemValue));
}
if (_setting.IsOrderByWithKey)
{
signSourceList = signSourceList.OrderBy(x => x.Key).ToList();
}
if (_setting.IsSignTextContainKey)
{
_signString = string.Join(_setting.SignTextItemSeparator, signSourceList.Select(x => $"{x.Key}{_setting.SignTextKeyValueSeparator}{x.Value}"));
}
else
{
_signString = string.Join(_setting.SignTextItemSeparator, signSourceList.Select(x => x.Value));
}
return this;
}
/// <summary>
/// 签名主体设置前缀
/// </summary>
/// <param name="input">前缀值</param>
/// <returns></returns>
public HttpSigner SetSignTextPrefix(string input)
{
_signString = $"{input}{_signString}";
return this;
}
/// <summary>
/// 签名主体设置后缀
/// </summary>
/// <param name="input">后缀值</param>
/// <returns></returns>
public HttpSigner SetSignTextSuffix(string input)
{
_signString = $"{_signString}{input}";
return this;
}
/// <summary>
/// 签名主体设置后缀
/// </summary>
/// <returns></returns>
public HttpSigner SetUrlEncode()
{
_signString = System.Web.HttpUtility.UrlEncode(_signString, _setting.DefaultEncoding);
return this;
}
/// <summary>
/// 签名主体进行Base64
/// </summary>
/// <returns></returns>
public HttpSigner SetSignTextBase64()
{
_signString = Base64Utils.GetStringValue(_signString);
return this;
}
/// <summary>
/// 签名主体进行MD5
/// </summary>
/// <param name="isToLower">签名结果是否转小写</param>
/// <returns></returns>
public HttpSigner SetSignTextMD5(bool isToLower = true)
{
if (isToLower)
{
_signString = MD5Utils.GetStringValueToLower(_signString);
}
else
{
_signString = MD5Utils.GetStringValueToUpper(_signString);
}
return this;
}
/// <summary>
/// 签名主体进行SHA1
/// </summary>
/// <param name="isToLower">签名结果是否转小写</param>
/// <returns></returns>
public HttpSigner SetSignTextSHA1(bool isToLower = true)
{
if (isToLower)
{
_signString = SHA1Utils.GetStringValueToLower(_signString);
}
else
{
_signString = SHA1Utils.GetStringValueToUpper(_signString);
}
return this;
}
/// <summary>
/// 获取签名结果
/// </summary>
/// <returns></returns>
public string GetSignResult()
{
return _signString;
}
}
}
5、附上仓库地址
以上代码包含在我的通用类库中，可以直接Nuget搜索JiuLing.CommonLibs安装。
GitHub类库地址
文章代码地址
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