Go-json解密【数字精度问题】

╰半橙微兮° 2022-09-09 02:19 133阅读 0赞

获取请求中的json数据，片段如下：

func GetGuiYinKeywordData(campaignId, orgId, timeStr string) GuiYinKeywordRule {
    	reqest, reqestErr := http.NewRequest("POST", url, strings.NewReader(string(requestJson)))
    	responseBody, responseErr := client.Do(reqest)
    	if responseErr != nil {
    		log.WithFields(log.Fields{"responseErr": responseErr}).Warn("GetGuiYinKeywordData")
    		return GuiYinKeywordRule{}
    	}
    
    	defer responseBody.Body.Close()
    	responseResp := GuiYinKeywordRule{}
    	decoder := json.NewDecoder(responseBody.Body)
    	decoder.UseNumber()
    
    	return responseResp
    }

最主要是上面这一行代码：

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAbHV5YXJhbg_size_20_color_FFFFFF_t_70_g_se_x_16][]

使用json数据代码片段如下：

func UpdateAdvertisementData() {
    	numAry := []map[string]interface{}{}
    	for campaign, org := range campaignIdAry {
    		campaignId, orgId := campaign, org
    		keywordAry := utils.GetGuiYinKeywordData(campaignId, orgId, timeStr)
    		rowData := keywordAry.Data.ReportingDataResponse.Row
    		for _, keyword := range rowData {
    			totalAry, metadataAry := keyword.Total.(map[string]interface{}), keyword.Metadata.(map[string]interface{})
    			localSpend := totalAry["localSpend"].(map[string]interface{})
    			keywordIdInt64, _ := metadataAry["keywordId"].(json.Number).Int64()
    			adGroupIdInt64, _ := metadataAry["adGroupId"].(json.Number).Int64()
    			exposureNumInt64, _ := totalAry["impressions"].(json.Number).Int64()
    			clickNumInt64, _ := totalAry["taps"].(json.Number).Int64()
    			downloadNumInt64, _ := totalAry["installs"].(json.Number).Int64()
    			advertisementPriceFloat64, _ := strconv.ParseFloat(localSpend["amount"].(string), 64)
    			numAry = append(numAry, map[string]interface{}{
    				"keywordId":          strconv.FormatInt(keywordIdInt64, 10),
    				"keywordName":        metadataAry["keyword"],
    				"adgroupId":          strconv.FormatInt(adGroupIdInt64, 10),
    				"adgroupName":        metadataAry["adGroupName"],
    				"exposureNum":        exposureNumInt64,
    				"clickNum":           clickNumInt64,
    				"downloadNum":        downloadNumInt64,
    				"advertisementPrice": advertisementPriceFloat64,
    			})
    		}
    	}
    
    	fmt.Println("【结束执行时间】：" + time.Now().Format("2006-01-02 15:04:05"))
    }

使用json数据中的数字最主要是如下方式：

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAbHV5YXJhbg_size_20_color_FFFFFF_t_70_g_se_x_16 1][]

json数据结构大致如下：

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAbHV5YXJhbg_size_20_color_FFFFFF_t_70_g_se_x_16 2][]

[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAbHV5YXJhbg_size_20_color_FFFFFF_t_70_g_se_x_16]: /images/20220829/6253de9935ce44f18feaeaeae40da233.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAbHV5YXJhbg_size_20_color_FFFFFF_t_70_g_se_x_16 1]: /images/20220829/a658918d92134da689bb68f41417ec05.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAbHV5YXJhbg_size_20_color_FFFFFF_t_70_g_se_x_16 2]: /images/20220829/e52cf765f70546dc8e7e1e95d0157ab9.png