#include <iostream>
#include <fstream> //读写文件 c++标准库
#include <string> //字符串类 c++标准库
#include <sstream> //字符串流 c++标准库
#include <assert.h>
#include "json/json.h" //jsoncpp的头文件#include <cgicc/CgiDefs.h> 
#include <cgicc/Cgicc.h> 
#include <cgicc/HTTPHTMLHeader.h> 
#include <cgicc/HTMLClasses.h> using namespace cgicc;
using namespace std;
#define DEBUG false/********************* 测试模块 ********************/
void TestMode()
{Cgicc formData;		//加载Cgicc，获取Cgicc对象//获取 input标签 值const vector<cgicc::FormEntry>& form_entries = formData.getElements();	//getElements()函数，获取该from表单中全部 input标签cout << "form_entries.size()=" << form_entries.size() << endl;for (vector<cgicc::FormEntry>::size_type i=0; i<form_entries.size(); ++i){const cgicc::FormEntry& form_entry = form_entries[i];//打印每个 input标签 中 name属性 和 value属性值cout << "getName=" << form_entry.getName() << "; getValue=" << form_entry.getValue() << endl;}/*string name = formData("single_ip_type_ip");	//根据id获取其valuecout << "name=" << name << endl;form_iterator fi = formData.getElement("RadioGroup_Eth_Select");	//根据相同的name属性获取全部的radio对象if(!fi->isEmpty() && fi != (*formData).end())cout << "select eth:" << **fi << endl;elsecout << "no select." << endl;*/
}/********************* 写json文件 ********************/
/* 判断是否成功打开json文件 */
bool isReadJsonFileOk(const char *jsonFileName,Json::Value *jsonInfo)
{ifstream jsonFile(jsonFileName,ios::binary);if(!jsonFile.is_open()){
#if (DEBUG == true)cout << "OPEN " << jsonFileName << "ERROR" << endl;
#endifreturn false;}else{Json::Reader reader;if(reader.parse(jsonFile,*jsonInfo)){jsonFile.close();return true;}else{
#if (DEBUG == true)cout << "parse json ERROR." << endl;
#endifjsonFile.close();return false;}}return true;
}
/* 判断是否成功更新json文件 */
bool isWriteJsonFileOK(const char *jsonFileName,const Json::Value writeJson)
{ofstream jsonFile(jsonFileName,ios::out);if(!jsonFile.is_open()){
#if (DEBUG == true)cout << "OPEN " << jsonFileName << " ERROR." << endl;
#endifreturn false;}else{Json::StyledWriter sw;jsonFile << sw.write(writeJson);jsonFile.close();return true;}return true;
}
/* * 函数名: WriteSingleIpToJson: 将单ip配置写入json* 参数：* 	jsonFileName: json文件* 	select_eth_type: 网口类型选择* 	ip: IP地址*	subnet_mask: 子网掩码*  gateway: 默认网关*/
void WriteSingleIpToJson(const char *jsonFileName, int select_eth_type, string ip, string subnet_mask, string gateway)
{Json::Value jsonInfo;if(isReadJsonFileOk(jsonFileName, &jsonInfo) != true){
#if (DEBUG == true)cout << "write radio.josn file: open false." << endl;
#endifreturn;}//更新json文件jsonInfo["native"]["client_eth_choose"] = select_eth_type;jsonInfo["native"]["native_ip_address"] = ip;jsonInfo["native"]["native_subnet_mask"] = subnet_mask;jsonInfo["native"]["native_default_gateway"] = gateway;jsonInfo["native"]["client_type"] = 1;isWriteJsonFileOK(jsonFileName, jsonInfo);
}
/** WriteVipToJson: 将虚拟IP数据写入json* 参数：*	jsonFileName: json文件*	eth0_ip: eth0网口ip*	eth1_ip: eth1网口ip*	vip: 虚拟IP*  subnet_mask: 子网掩码*	gateway: 默认网关*/
void WriteVipToJson(const char *jsonFileName, string eth0_ip, string eth1_ip, string vip, string subnet_mask, string gateway)
{Json::Value jsonInfo;if(isReadJsonFileOk(jsonFileName, &jsonInfo) != true){
#if (DEBUG == true)cout << "write radio.json file: open false." << endl;
#endifreturn;}//更新json文件jsonInfo["native"]["native_ip_address"] = eth0_ip;jsonInfo["native"]["native_eth1_ip_address"] = eth1_ip;jsonInfo["native"]["native_vip_ip_address"] = vip;jsonInfo["native"]["native_subnet_mask"] = subnet_mask;jsonInfo["native"]["native_default_gateway"] = gateway;jsonInfo["native"]["client_type"] = 2;isWriteJsonFileOK(jsonFileName, jsonInfo);
}/******************* 提交单IP类型 *******************/
void SubmitSingleIpType()
{Cgicc formData;string single_ip_type_ip = formData("single_ip_type_ip");string single_ip_type_subnet_mask = formData("single_ip_type_subnet_mask");string single_ip_type_gateway = formData("single_ip_type_gateway");form_iterator fi = formData.getElement("RadioGroup_Eth_Select");string select_eth_name;int select_eth_value = 0;if(!fi->isEmpty() && fi != (*formData).end())select_eth_name = **fi;
#if (DEBUG == true)cout << "[single_ip_type] select_eth_name = " << select_eth_name<< "; ip = " << single_ip_type_ip << "; single_ip_type_subnet_mask = " << single_ip_type_subnet_mask<< "; single_ip_type_gateway = " << single_ip_type_gateway<< endl << endl;
#endifif(select_eth_name == "eth0")select_eth_value = 0;elseselect_eth_value = 1;WriteSingleIpToJson("/opt/conf/radio.json", select_eth_value, single_ip_type_ip, single_ip_type_subnet_mask, single_ip_type_gateway);
}/***************** 提交虚拟IP类型 *****************/
void SubmitVipType()
{Cgicc formData;string vip_type_eth0_ip = formData("vip_type_eth0_ip");string vip_type_eth1_ip = formData("vip_type_eth1_ip");string vip_type_vip = formData("vip_type_vip");string vip_type_subnet_mask = formData("vip_type_subnet_mask");string vip_type_gateway = formData("vip_type_gateway");
#if (DEBUG == true)cout << "[vip_type] vip_type_eth0_ip = " << vip_type_eth0_ip<< "; vip_type_eth1_ip = " << vip_type_eth1_ip << "; vip_type_vip = " << vip_type_vip<< "; vip_type_subnet_mask = " << vip_type_subnet_mask<< "; vip_type_gateway = " << vip_type_gateway<< endl << endl;
#endifWriteVipToJson("/opt/conf/radio.json", vip_type_eth0_ip, vip_type_eth1_ip, vip_type_vip, vip_type_subnet_mask, vip_type_gateway);
}/******************* main函数 *********************/
int main(int argc, char *argv[])
{cout << "Content-type:text/html;charset=utf-8\r\n\r\n";
#if (DEBUG == true)if(argc > 1){for(int i = 0; i < argc; i++){cout << "TIME SYN: argv[" << i << "]=" << argv[i] << endl;}}TestMode();
#endifstring submit_single_ip_type = "single_ip_type"; //提交"单IP"表单数据string submit_vip_type = "vip_type"; //提交"虚拟IP"表单数据if(argc > 1 && argv[1] == submit_single_ip_type){SubmitSingleIpType();}else if(argc > 1 && argv[1] == submit_vip_type){SubmitVipType();}#if (DEBUG == false)//cout << "<meta http-equiv=\"refresh\" content=\"0;url=../sjtb.html\">";//刷新当前页面cout << "<script>window.location.href = '../../wlsz.html';</script>\n";
#endifreturn 0;
}

 web通过 submit 提交form形式执行cgi程序。

cgicc的安装和使用，参考：Cgicc搭建交叉编译环境（移植到arm）-CSDN博客

jsoncpp的安装和使用，参考：CentOS7编译jsoncpp静态库_jsoncpp-master生成静态库-CSDN博客 

Jsoncpp搭建交叉编译环境（移植到arm）_json 移植到arm-CSDN博客