带引号和变量的c++查询字符串解析

#include <iostream>
#include <string>
#include <vector>

// 函数用于解析查询字符串
std::vector<std::pair<std::string, std::string>> parseQueryString(const std::string& queryString) {
    std::vector<std::pair<std::string, std::string>> params;

    // 按照 '&' 分割查询字符串
    size_t startPos = 0;
    size_t endPos = queryString.find('&');
    while (endPos != std::string::npos) {
        std::string param = queryString.substr(startPos, endPos - startPos);

        // 按照 '=' 分割参数名和参数值
        size_t equalPos = param.find('=');
        if (equalPos != std::string::npos) {
            std::string paramName = param.substr(0, equalPos);
            std::string paramValue = param.substr(equalPos + 1);

            // 去除参数值中的引号
            if (!paramValue.empty() && (paramValue.front() == '"' && paramValue.back() == '"')) {
                paramValue = paramValue.substr(1, paramValue.length() - 2);
            }

            params.push_back(std::make_pair(paramName, paramValue));
        }

        startPos = endPos + 1;
        endPos = queryString.find('&', startPos);
    }

    // 处理最后一个参数
    std::string lastParam = queryString.substr(startPos);
    size_t equalPos = lastParam.find('=');
    if (equalPos != std::string::npos) {
        std::string paramName = lastParam.substr(0, equalPos);
        std::string paramValue = lastParam.substr(equalPos + 1);

        // 去除参数值中的引号
        if (!paramValue.empty() && (paramValue.front() == '"' && paramValue.back() == '"')) {
            paramValue = paramValue.substr(1, paramValue.length() - 2);
        }

        params.push_back(std::make_pair(paramName, paramValue));
    }

    return params;
}

int main() {
    std::string queryString = "param1=value1&param2=\"value2\"&param3=value3";

    std::vector<std::pair<std::string, std::string>> params = parseQueryString(queryString);

    // 输出解析结果
    for (const auto& param : params) {
        std::cout << "Param Name: " << param.first << ", Param Value: " << param.second << std::endl;
    }

    return 0;
}

Param Name: param1, Param Value: value1
Param Name: param2, Param Value: value2
Param Name: param3, Param Value: value3