iOS中，swift代码，调用http的库Alamofire时，代码：
func exportReportSummary(sender:UIButton){ gLog.debug(“sender=\(sender)”) self.pleaseWait() var parameters = [String : AnyObject]() parameters = [ “accessTokenId”: gCurUserItem.accessToken as AnyObject ] getUrlRespJson_async( httpMethod: .get, url: ServerApi.getExportShopVisitReportUrl(visitId: self.id), parameters: parameters, respJsonHandle: { [weak self] (response) in self?.clearAllNotice() if response.isSuccess { gLog.debug(response.successValue) } else if response.isFailure { self?.noticeInfo(response.failedMessage) } }) } |
现象：
一直loading，网络请求无返回：
2017-09-18 15:58:23.142 [Info] [main] [VincentHttp.swift:61] getRequestRespJson(httpRequest:mergedAllPara:requsetType:respJsonHandler:) > httpRequest=GET http://123.206.101.36:9090/v1/skr/task/resource/visit/export/file/plan/visit_13429_20170906144751, mergedAllPara=[“parameters”: { accessTokenId = gtlrl8vsk59agk0a0tlcrffa59; }, “httpMethod”: GET, “url”: http://123.206.101.36:9090/v1/skr/task/resource/visit/export/file/plan/visit_13429_20170906144751], respJsonHandler=(Function) 2017-09-18 15:58:23.142911+0800 SRTDev[17438:12772137] [] nw_endpoint_flow_service_writes [1.1 123.206.101.36:9090 ready socket-flow (satisfied)] Write request has 4294967295 frame count, 0 byte count 2017-09-18 15:58:53.155762+0800 SRTDev[17438:12772040] [] nw_endpoint_flow_service_writes [1.1 123.206.101.36:9090 ready socket-flow (satisfied)] Write request has 4294967295 frame count, 0 byte count 2017-09-18 15:58:53.160449+0800 SRTDev[17438:12774120] [] tcp_connection_write_eof_block_invoke Write close callback received error: [89] Operation canceled 2017-09-18 15:58:53.190530+0800 SRTDev[17438:12774120] [] nw_endpoint_flow_service_writes [11.1 123.206.101.36:9090 ready socket-flow (satisfied)] Write request has 4294967295 frame count, 0 byte count |
搜：
nw_endpoint_flow_service_writes ready socket-flow (satisfied)] Write request
Sending GET with JSON in body gets Timeout error · Issue #1819 · Alamofire/Alamofire
我此处，貌似也是对于：
get来说，用的是：
func getUrlRespJson_async(httpMethod:Alamofire.HTTPMethod,url:String,parameters: [String : AnyObject]? = nil,headers:[String:String]? = nil, requsetType: SRTRequsetType = .json,respJsonHandle:@escaping (_ httpResult: SRTHttpResult)-> Void) { mergedExtraPara[“parameters”] = parameters as AnyObject? let curHttpReq = Alamofire.request(url, method: httpMethod, parameters: parameters, encoding: JSONEncoding.default, headers: curHeaders) |
对于get来说，query string，感觉应该是加到url中，应该用的是：
URLEncoding
所以此处解决办法有两种：
1是调用此处的getUrlRespJson_async之前，就把参数放到url中 ?key=value
2.是放到此处的parameters， 然后代码中通过是get就用URLEncoding，如果是POST或PUT就用JSONEncoding
现在去用第二种
func getUrlRespJson_async(httpMethod:Alamofire.HTTPMethod, url:String,parameters: [String : AnyObject]? = nil, headers:[String:String]? = nil, requsetType: SRTRequsetType = .json, respJsonHandle:@escaping (_ httpResult: SRTHttpResult)-> Void) { var paramEncoding:ParameterEncoding = JSONEncoding.default if (httpMethod == .get) { paramEncoding = URLEncoding.default } // let curHttpReq = Alamofire.request(url, method: httpMethod, parameters: parameters, encoding: JSONEncoding.default, headers: curHeaders) let curHttpReq = Alamofire.request(url, method: httpMethod, parameters: parameters, encoding: paramEncoding, headers: curHeaders) |
然后就可以正常传递参数，返回正确结果了：
对应url是我们希望的：
http://x.x.x.x:9090/v1/skr/task/resource/visit/export/file/plan/visit_13429_20170906144751?accessTokenId=ng6j540efljmtct8o5dvo4uqks
【总结】
此处，之所以调用Alamofire出现nw_endpoint_flow_service_writes的错误：，是因为：
在get时，设置了parameters，但是编码时用的是（POST／PUT等才该用的）JSONEncoding
解决办法：
当get时，把JSONEncoding换成URLEncoding，即可。
相关代码：
var paramEncoding:ParameterEncoding = JSONEncoding.default if (httpMethod == .get) { paramEncoding = URLEncoding.default } // let curHttpReq = Alamofire.request(url, method: httpMethod, parameters: parameters, encoding: JSONEncoding.default, headers: curHeaders) let curHttpReq = Alamofire.request(url, method: httpMethod, parameters: parameters, encoding: paramEncoding, headers: curHeaders) |
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