106 lines
3.4 KiB
C++
106 lines
3.4 KiB
C++
#include "CCMySql.h"
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#include "CCSystem.h"
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CTL::MySql::MySql(){
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mysql = new MYSQL;
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}
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CTL::MySql::~MySql(){
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delete mysql;
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mysql = nullptr;
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}
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bool CTL::MySql::Connect(const std::string& host, const std::string& user,
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const std::string& passwd, const std::string& db, const int port) const{
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//初始化mysql
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mysql_init(mysql); //连接mysql，数据库
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// const char host[] = "localhost";
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// const char user[] = "root";
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// const char psw[] = "111111";
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// const char table[] = "test";
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// const int port = 3306;
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//返回false则连接失败，返回true则连接成功
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if (!(mysql_real_connect(mysql, host.c_str(), user.c_str(), passwd.c_str(), db.c_str(), port, nullptr, 0))){
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//中间分别是主机，用户名，密码，数据库名，端口号（可以写默认0或者3306等），可以先写成参数再传进去
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CTL::System::Println("Error connecting to database:{}\n", mysql_error(mysql));
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return false;
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}
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else{
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// printf("Connected...\n");
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return true;
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}
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}
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CTL::RetData CTL::MySql::Query(const std::string& sql) const{
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MYSQL_RES *Res;
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MYSQL_ROW Row;
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CTL::RetData data;
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if (mysql_query(mysql, sql.c_str())) {
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// CCTimeData time;
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// std::string msg = "[" + time.to_String() + "] -> The query failed -> " + mysql_error(&mysql);
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// CC::Println(msg);
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return {};
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}
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// 获取结果集
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Res = mysql_store_result(mysql);
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if (Res == nullptr) {
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// CCTimeData time;
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// std::string msg = "[" + time.to_String() + "] -> Failed to get the result set -> " + mysql_error(&mysql);
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// CC::Println(msg);
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return {};
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}
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// 遍历结果集
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while ((Row = mysql_fetch_row(Res)) != nullptr) {
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const auto var = mysql_num_fields(Res);
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MYSQL_FIELD* fields = mysql_fetch_fields(Res);
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nlohmann::json json;
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for (unsigned int i = 0; i < var; ++i) {
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if (fields[i].type == MYSQL_TYPE_LONG || fields[i].type == MYSQL_TYPE_TINY
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|| fields[i].type == MYSQL_TYPE_SHORT) {
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json[fields[i].name]= String(Row[i]).to_int();
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}
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else if (fields[i].type == MYSQL_TYPE_DOUBLE) {
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json[fields[i].name]= String(Row[i]).to_double();
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}
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else if (fields[i].type == MYSQL_TYPE_FLOAT) {
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json[fields[i].name]= String(Row[i]).to_float();
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}
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else if (fields[i].type == MYSQL_TYPE_BOOL) {
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json[fields[i].name]= String(Row[i]).to_int() == 1;
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}
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else{
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json[fields[i].name]= Row[i];
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}
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}
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data.Data.push_back(json);
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}
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data.Flag = true;
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data.Col = mysql_field_count(mysql);
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data.Row = mysql_num_rows(Res);
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data.Error = mysql_error(mysql);
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// 释放资源
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mysql_free_result(Res);
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return data;
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}
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void CTL::MySql::Close() const{
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mysql_close(mysql);
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}
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CTL::RetData CTL::MySql::Execute(const std::string& sql) const{
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RetData data;
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if (mysql_query(mysql, sql.c_str())) {
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// CCTimeData time;
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// std::string msg = "[" + time.to_String() + "] -> Failed to update the database -> " + mysql_error(&mysql);
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// CC::Println(msg);
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data.Flag = false;
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data.Error = mysql_error(mysql);
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return data;
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}
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data.Flag = true;
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return data;
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}
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