如何在虚拟机中调用百度地图api,完成经纬度查询

为了完成实时获取车辆的地址，本文调用了如下的代码：具体信息请查看下述代码注释

#include <iostream>
#include <curl/curl.h>
#include <string>
#include <json/json.h>

// 回调函数，用于将 HTTP 响应数据写入字符串
size_t WriteCallback(void *contents, size_t size, size_t nmemb, std::string *s) {
    size_t newLength = size * nmemb;
    try {
        s->append((char*)contents, newLength);
    } catch(std::bad_alloc &e) {
        // 处理内存分配错误
        return 0;
    }
    return newLength;
}

// 使用百度地图 API 进行地点检测
std::string geocodeLocation(const std::string& address, const std::string& apiKey) {
    CURL *curl;
    CURLcode res;
    std::string readBuffer;
    std::string url = "http://api.map.baidu.com/geocoding/v3/?address=" + address + "&output=json&ak=" + apiKey;

    curl = curl_easy_init();
    printf("curl=%d\n",curl);
    if(curl) {
        curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);
        res = curl_easy_perform(curl);
        if(res!= CURLE_OK) {
            std::cerr << "curl_easy_perform() failed: " << curl_easy_strerror(res) << std::endl;
        }
        curl_easy_cleanup(curl);
    }
    return readBuffer;
}

int main() {
    std::string apiKey = "********************";  //添加百度地图的key
    std::string address = "浙江省*********";       //修改对应的地址
    std::string response = geocodeLocation(address, apiKey);
    printf("response=%c\n",response);

    Json::Value root;
    Json::Reader reader;
    bool parsingSuccessful = reader.parse(response, root);
    if (!parsingSuccessful) {
        std::cerr << "Failed to parse JSON" << std::endl;
        return -1;
    }

    if (root["status"].asInt() == 0) {     //打印对应的地点、经纬度信息
        std::cout << "地点：" << root["result"]["formatted_address"].asString() << std::endl;
        std::cout << "经度：" << root["result"]["location"]["lng"].asDouble() << std::endl;
        std::cout << "纬度：" << root["result"]["location"]["lat"].asDouble() << std::endl;
    } else {
        std::cerr << "无法找到地点：" << address << std::endl;
    }

    return 0;
}

通过上述操作即可完成实时地点信息获取功能。