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.netcore 写快递100的快递物流信息查询接口的实现

转载 作者:qq735679552 更新时间:2022-09-27 22:32:09 35 4
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快递100的物流信息查询接口,官方提供了一些demo;还好官方提供的代码是.netcore版本写的,不过写的有点low;根据官方提供的代码,我按照.netcore 的风格重构了代码;核心代码如下:

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/// <summary>
     /// 沐雪微淘快递100帮助类.
     /// </summary>
     public class KuaiDi100Helper
     {
         private ILogger _logger;
         private MuXueConfigHelper _configHelper;
         HttpClient _client;
 
         /// <summary>
         /// 快递100帮助类
         /// </summary>
         /// <param name="logger"></param>
         /// <param name="configHelper"></param>
         public KuaiDi100Helper(ILogger<KuaiDi100Helper> logger, HttpClient client, MuXueConfigHelper configHelper)
         {
             _configHelper = configHelper;
             _logger = logger;
             _client = client;
         }
 
         /// <summary>
         /// 实时快递查询接口
         /// </summary>
         /// <param name="tenant_id"></param>
         /// <param name="shop_code"></param>
         /// <param name="com">查询的快递公司的编码, 一律用小写字母</param>
         /// <param name="num">查询的快递单号, 单号的最大长度是32个字符</param>
         /// <param name="phone">收、寄件人的电话号码(手机和固定电话均可,只能填写一个,顺丰单号必填,其他快递公司选填。如座机号码有分机号,分机号无需上传。)</param>
         /// <returns></returns>
         public async Task<QueryTackResult> QueryTrack( long tenant_id, string shop_code, string com, string num, string phone= "" )
         {
             QueryTackResult result = new QueryTackResult();
             try
             {
 
                 TenantConfig config = await _configHelper.GetTenantAllAsync(tenant_id, shop_code);
 
                 QueryTrackParam queryTrackParam = new QueryTrackParam();
                 if (com== "shunfeng" )
                 {
                       queryTrackParam = new QueryTrackParam()
                     {
                         com = com,
                         num = num,
                         phone = phone
                     };
                 }
                 else
                 {
                       queryTrackParam = new QueryTrackParam()
                     {
                         com = com,
                         num = num,
                     };
                 }
               
 
                 QueryTrackReq query = new QueryTrackReq()
                 {
                     customer = config.KuaiDi100CustomerID,
                     sign = SignUtils.GetMD5(queryTrackParam.ToString() + config.KuaiDi100Key + config.KuaiDi100CustomerID),
                     param = queryTrackParam
                 };
                 var requestParam = ObjectToDictionaryUtils.ObjectToMap(query);
                 if (requestParam == null )
                 {
                     return null ;
                 }
                 
                  result = await HttpClientHelper.PostFormAsync<QueryTackResult>(_client, ApiInfoConstant.QUERY_URL, requestParam);
                 
             }
             catch (Exception ex)
             {
                 _logger.LogError(ex, $ "快递100实时快递查询接口异常:{ex.Message}" );
                 return null ;
             }
             return result;
         }
 
 
     }

上面的代码一眼看,就知道必须要使用依赖注入;我们看到 在构造函数里使用了HttpClient _client    这个东西;(因为要调用快递100的接口), 。

我们在startup里接着写:

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services.AddScoped<KuaiDi100Helper>();

如上代码应该是最常用的注册方法;结果报错,错误信息如下:

System.AggregateException:“Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: MuXue.WeTao.Mall.Core.kuaidi100.KuaiDi100Helper Lifetime: Scoped ImplementationType: MuXue.WeTao.Mall.Core.kuaidi100.KuaiDi100Helper': Unable to resolve service for type 'System.Net.Http.HttpClient' while attempting to activate 'MuXue.WeTao.Mall.Core.kuaidi100.KuaiDi100Helper'.)”     InvalidOperationException: Unable to resolve service for type 'System.Net.Http.HttpClient' while attempting to activate 'MuXue.WeTao.Mall.Core.kuaidi100.KuaiDi100Helper'. 。

根据错误信息看,应该是httpclient出了问题了;找了很久才找到解决方法,修改startup里的注册方法 。

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services.AddHttpClient<KuaiDi100Helper>(); //这样注入

这样就没问题了.

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原文链接:https://www.cnblogs.com/puzi0315/p/14692024.html 。

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