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.netcore 写快递100的快递物流信息查询接口的实现_实用技巧_

2023-05-24 362人已围观

简介 .netcore 写快递100的快递物流信息查询接口的实现_实用技巧_

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:

 ///  /// 沐雪微淘快递100帮助类. ///  public class KuaiDi100Helper { private ILogger _logger; private MuXueConfigHelper _configHelper; HttpClient _client; ///  /// 快递100帮助类 ///  ///  ///  public KuaiDi100Helper(ILogger logger, HttpClient client, MuXueConfigHelper configHelper) { _configHelper = configHelper; _logger = logger; _client = client; } ///  /// 实时快递查询接口 ///  ///  ///  /// 查询的快递公司的编码, 一律用小写字母 /// 查询的快递单号, 单号的最大长度是32个字符 /// 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。) ///  public async Task 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(_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:

 services.AddScoped();

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

 services.AddHttpClient(); //这样注入 

这样就没问题了。

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