错误：接口转换 interface {} 是 []interface {}，而不是 map[string]interface {}

Question

我正在构建一个项目，该项目从用户那里获取一个术语，然后执行谷歌搜索并以 json 格式返回标题列表。

我正在使用 serpwow API 来执行谷歌搜索并试图解析响应。

但是，我收到错误消息：

panic: interface conversion: interface {} is []interface {}, not map[string]interface {}.

我查看了各种表格并试图了解映射的工作原理，但我不确定为什么在这种情况下，我的映射不起作用。有机结果表如下所示：

"organic_results": [
    {
      "position": 1,
      "title": "The 10 Best Pizza Places in Dublin - TripAdvisor",
      "link": "https://www.tripadvisor.ie/Restaurants-g186605-c31-Dublin_County_Dublin.html",
      "domain": "www.tripadvisor.ie",
      "displayed_link": "https://www.tripadvisor.ie › ... › County Dublin › Dublin",
      "snippet": "Best Pizza in Dublin, County Dublin: Find TripAdvisor traveller reviews of Dublin Pizza places and search by price, location, and more.",
      "prerender": false,
      "snippet_matched": [
        "Pizza",
        "Pizza"
      ],
      "cached_page_link": "https://webcache.googleusercontent.com/search?q=cache:OS-Ar9hB_ngJ:https://www.tripadvisor.ie/Restaurants-g186605-c31-Dublin_County_Dublin.html+&cd=4&hl=en&ct=clnk&gl=ie",
      "related_page_link": "https://www.google.com/search?q=related:https://www.tripadvisor.ie/Restaurants-g186605-c31-Dublin_County_Dublin.html+pizza&tbo=1&sa=X&ved=2ahUKEwicjYKvvNjmAhVoSBUIHa9MBhcQHzADegQIARAH",
      "block_position": 2
    },

这是我的代码片段：

package main

import (
    "fmt"
    "strings"
    serpwow "github.com/serpwow/google-search-results-golang"
)

func main() {
    // set API key
    apiKey := "Key_Hidden"

    //read term to search
    fmt.Print("What term would you like to search in google? ")
    var term string
    fmt.Scanln(&term)

    // set up our search parameters
    parameters := map[string]interface{}{
        "q": term,
    }

    // retrieve the search results as JSON
    response, error := serpwow.GetJSON(parameters, apiKey)

    // print the response, or error, if one occurred
    if error != nil {
        fmt.Println(error)
    } else {
    //extract title from organic results
    //result := fmt.Sprintf("%v", response["organic_results"].(map[string]interface{})["title"])
    for _, item := range response["organic_results"].([]interface{}) {
        fmt.Sprintf("%v", item.(map[string]interface{})["title"])
    }
    //s := []string{result, "\n"}
    //fmt.Printf(strings.Join(s, " "))

}

有人可以帮我弄清楚我的逻辑错误在哪里吗？

Answer 1

response["organic_results"]对应于 JSON 数组“organic_results”，因此它不是 a map[string]interface{}，而是 a []interface。有多种结果，而不是一种。

for _,item:=range respose["organic_results"].([]interface{}) {
    fmt.Printf("%v", item.(map[string]interface{})["title"])
}