如果我使用自定义main ( void main()而不是shared static this() ),所有这些都可以正常工作。
在默认的main中,我得到了“访问冲突”错误。它看起来像是MySQL不允许从localhost连接到它,但是在my.ini中我添加了字符串:
bind-address = 127.0.0.1
密码,如果有用的话:
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");
}
}
}此外,我还运行下一个命令:
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'password' WITH GRANT OPTION; FLUSH PRIVILEGES;
另外,我尝试了不同的bind-address,比如:0.0.0.0和localhost,但是没有结果。每次新绑定之后,我都重新启动了MySQL服务。
我正在使用这个驱动程序http://code.dlang.org/packages/ddbc
怎么了?
发布于 2015-05-20 21:13:24
继续我的评论( 无法从vibed应用程序连接MySQL/MariaDB数据库 )。
我刚刚进行了测试,这肯定是事件循环;)
而不是:
auto parseconfig = new ParseConfig();
auto db = new DBConnect(parseconfig);只要做:
runTask({
auto parseconfig = new ParseConfig();
auto db = new DBConnect(parseconfig);
});为我工作过(DMD2.067.0/Vibe0.7.23/ ddbc 0.2.24 /着色和迪尼母版)。
要回答您的注释( 无法从vibed应用程序连接MySQL/MariaDB数据库):事件循环从主函数内部开始。当您启动一个D应用程序时会发生什么?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 (如果您使用-unittest编译过),然后调用main (名称为"_Dmain“),这对于知道是否要用GDB设置断点很有用。当调用Vibe.d的main时,它解析命令行参数(一个可选的配置文件),最后启动事件循环。任何希望在事件循环启动后运行的代码都应该使用runTask和类似的,或者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)。
https://stackoverflow.com/questions/30302161
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