[{"key":"id1","value":"1321321"},{"key":"id3","value":"312313"}]。转成{id1:1321321,id3:312313}

您可以使用以下代码将给定的JSON格式转换为{id1:1321321,id3:312313}的形式：

#include <iostream>
#include <map>
#include <string>
#include <sstream>
#include <json/json.h> //引入jsoncpp库

int main() {
    std::string json = R"([{"key":"id1","value":"1321321"},{"key":"id3","value":"312313"}])";

    Json::Value root;
    Json::CharReaderBuilder reader;
    std::istringstream iss(json);
    std::string errs;

    // 解析JSON
    if (Json::parseFromStream(reader, iss, &root, &errs)) {
        std::map<std::string, std::string> result;

        // 遍历JSON数组中的每个元素
        for (const auto& item : root) {
            std::string key = item["key"].asString();
            std::string value = item["value"].asString();
            result[key = value;
        }

        // 输出转换后的结果
        std::cout << "{";
        for (const auto& pair : result) {
            std::cout << pair.first << ":" << pair.second << ",";
        }
        std::cout << "}";

    } else {
        std::cout << "JSON解析错误: " << errs;
    }

    return 0;
}

请注意，这段代码使用了jsoncpp库来解析和处理JSON。在运行之前，请确保已经正确安装和配置了jsoncpp库。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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