无法从振动应用程序连接到MySQL / MariaDB数据库

如果我使用自定义main(void main()而不是shared static this()),一切正常.

使用默认主菜单时出现“访问冲突”错误.它看起来像MySQL不允许从localhost连接到它,但在my.ini中我添加了字符串：

bind-address = 127.0.0.1

代码,如果有帮助：

import std.stdio;
import std.path;
import std.file;
import std.string;

import dini;
import vibe.d;
import colorize;
import ddbc.all;

shared static this()
{
    auto settings = new HTTPServerSettings;
    settings.port = 8080;
    settings.bindAddresses = ["::1", "127.0.0.1"];
    listenHTTP(settings, &hello);

    auto parseconfig = new ParseConfig();
    auto db = new DBConnect(parseconfig);
}

void hello(HTTPServerRequest req, HTTPServerResponse res)
{
    res.writeBody("Hello, World!");
}


class ParseConfig
{
    string dbname;
    string dbuser;
    string dbpass;
    string dbhost;
    string dbport;

this()
    {
        try
        {
            //getcwd do not return correct path if run from task shoulder
            string confpath = buildpath((thisExePath[0..((thisExePath.lastIndexOf("\\"))+1)]), "config.ini");
            //writefln(thisExePath[0..((thisExePath.lastIndexOf("\\"))+1)]); // get path without extention +1 is for getting last slash

            //string confpath = buildpath(thisExePath, "config.ini");
            if (!exists(confpath)) 
                {
                    writeln("ERROR: config.ini do not exists");
                }
            auto config = Ini.Parse(confpath);
            try
            {
                this.dbname = config.getKey("dbname");
                this.dbuser = config.getKey("dbuser");
                this.dbpass = config.getKey("dbpass");
                this.dbhost = config.getKey("dbhost");
                this.dbport = config.getKey("dbport");

            }
            catch (Exception msg)
            {
                cwritefln("ERROR: Can't parse config: %s".color(fg.red), msg.msg);
            }       
        }
        catch(Exception msg)
        {
            cwriteln(msg.msg.color(fg.red));
            core.thread.Thread.sleep( dur!("msecs")(1000));
        }   
    }


}


class DBConnect
{
    Statement stmt;
    ParseConfig parseconfig;

    this(ParseConfig parseconfig)
    {
        try
            {
                this.parseconfig = parseconfig;
                MysqLDriver driver = new MysqLDriver();
                string url = MysqLDriver.generateUrl(parseconfig.dbhost, to!short(parseconfig.dbport), parseconfig.dbname);
                string[string] params = MysqLDriver.setUserAndPassword(parseconfig.dbuser, parseconfig.dbpass);

                DataSource ds = new ConnectionPoolDataSourceImpl(driver, url, params);

                auto conn = ds.getConnection();
                scope(exit) conn.close();

                stmt = conn.createStatement();
                writefln("\n[Database connection OK]");
            }
        catch (Exception ex)
        {
            writefln(ex.msg);
            writeln("Could not connect to DB. Please check settings");
        }

    }   
}

我也运行下一个命令：

授予所有特权*.*””””””””””””””””””””””””””’
FLUSH特权;

我也尝试了不同的绑定地址,如：0.0.0.0和localhost但没有结果.每次新绑定后,我都重启了MysqL服务.

我正在使用这个驱动程序http://code.dlang.org/packages/ddbc

怎么了？

解决方法:

继续我的评论(Can’t connect to MySQL/MariaDB database from vibed app).

我刚刚测试过,它绝对是事件循环;)

代替：

auto parseconfig = new ParseConfig();
auto db = new DBConnect(parseconfig);

做就是了：

runTask({
    auto parseconfig = new ParseConfig();
    auto db = new DBConnect(parseconfig);
});

为我工作(DMD 2.067.0 / Vibe 0.7.23 / ddbc 0.2.24 / colorize& dini master).

要回答你的评论(Can’t connect to MySQL/MariaDB database from vibed app)：事件循环在main函数内部开始.
启动D应用程序会发生什么？入口点是运行时内部的C main,它初始化它(运行时),包括模块构造函数,运行unittest(如果你用-unittest编译),然后调用你的main(名字是“_Dmain” – 有用知道你是否想用GDB设置断点.
当调用Vibe.d的main时,它会解析命令行参数,一个可选的配置文件,最后启动事件循环.希望在事件循环开始后运行的任何代码都应该使用runTask和类似的,或createTimer.他们不应该直接从静态构造函数调用代码(这实际上是从Vibe.d开始时最常见的错误之一).

无法从振动应用程序连接到MySQL / MariaDB数据库

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