Home Database Mysql Tutorial QT预备式(包含MySql配置)

QT预备式(包含MySql配置)

Jun 07, 2016 pm 03:03 PM
mysql Include system birth Configuration

第一次系统地玩QT,于是诞生了此预备式: 【QT版本4.6.0(VS2008编译版),开发平台推荐使用Qt Creator(最新1.3版),系统这里使用Windows Xp】 QT Qt Creator MySql安装: QT :不知道QT开发人员怎么想的,总是跟空格过不去,安装QT时尽量将其装在根目录下

 

第一次系统地玩QT,于是诞生了此预备式:

【QT版本4.6.0(VS2008编译版),开发平台推荐使用Qt Creator(最新1.3版),系统这里使用Windows Xp】

QT & Qt Creator & MySql安装: 
QT:不知道QT开发人员怎么想的,总是跟空格过不去,安装QT时尽量将其装在根目录下,路径中尽量不要有中文,否则由于这问题出现诡异情况,GOOGLE都不一定好使~ 
Qt Creator:我的Qt Creator是在VS2008安装完成之后装的。装完Creator,它就默认使用VS编译器了(如果有问题,从VS环境变量、QT环境变量入手!)。但这也带来一个问题,就是调试器不能用GDB,要用微软的CDB(下载地址),在上面挑个最新版的下载安装。我这里Creator用的是1.3版的,对于CDB兼容性还是有问题的,会提示找不到"dbgeng.dll"。这时需要把CDB安装文件夹中的"dbghelp.dll"拷贝到Creator的Bin目录下,完成后就可以正常使用CDB调试了。 
MySql:MySql装上去通常会出现万恶的1067错误,针对该错误的解决方法可谓五花八门。这里MySql建议安装完全版的(除非很了解MySql,不然就不要安装Essential版),装的时候也是尽量挑英文无空格路径装,免得万一因路径出问题折腾。MySql的配置方法

  • 把my-small.ini拷贝成my.ini
  • 在其中的[client]下加上default-character-set=GBK;在[mysqld]下加上default-character-set=GBKbasedir = "D:/MySql"(MySql路径)、datadir = "D:/MySql/data"(数据库路径)、tmpdir = "D:/MySql//temp"(临时文件夹,注意双"/"转义"/t")。其中各路径根据MySql安装情况自己修改。
  • 在my.ini旁边创建一个文本文件,文件名改为Create.bat。用记事本打开,粘进如下代码:
<pre class="brush:php;toolbar:false">@echo off
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cd/d %~dp0
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@echo Build DataBase ...
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mkdir data
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mkdir temp
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copy /V /Y "./my.ini" "%windir%/my.ini"
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./bin/mysqld.exe --defaults-file="./my.ini" --console
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@echo Failure.
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pause
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并运行该批处理。如果最后未出现Failure输出,则创建数据库成功!创建成功后,关闭Create.bat批处理运行窗口。

  • 在my.ini旁边再创建一个文本文件,文件名改为Rebuild_And_Start_Service.bat。用记事本打开,粘进如下代码:
<pre class="brush:php;toolbar:false">@echo off
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cd/d %~dp0
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@echo Now Reinstall MySql Service ...
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./bin/mysqld.exe --remove
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./bin/mysqld.exe --install MySql
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@echo Start Service ...
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net start MySql
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@echo done.
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pause
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并运行该批处理。人品不错的话,应该是顺利启动服务了,碰1067的话GOOGLE去吧~

  • 为了日后管理方便,需要再创建个批处理来停止MySql服务。 在my.ini旁边再创建一个文本文件,文件名改为Stop_Service.bat。用记事本打开,粘进如下代码:
<pre class="brush:php;toolbar:false">@echo off
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net stop MySql
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echo done.
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pause
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并运行该批处理。关闭服务的批处理通常都是最好使的,双击即关闭。

  • 再补充一个启动MySql服务的批处理Start_Service.bat,便于在Stop_Service.bat运行后再次启动服务:
<pre class="brush:php;toolbar:false">@echo off
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net start MySql
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echo done.
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pause
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  • 上面一切都搞定,MySql服务运行后,就可以运行MySql安装文件夹下Bin目录中的mysql.exe,试试MySql功能正常不。
  • MySql可以启动并正常使用后,将MySql数据库驱动(点击看编译方法)拷贝到“%QTDIR%/plugins/sqldrivers”中。在MySql安装目录中找到“libmysql.dll”,并将其拷贝到“%QTDIR%/bin”下。 

关于带数据库驱动的QT程序的部署:在QT程序的main函数中,使用QCoreApplication::addLibraryPath()添加库文件加载路径。

QT的中文化 

<pre class="brush:php;toolbar:false"><span>int</span> main(<span>int</span> argc, <span>char</span> *argv[])
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{
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    QApplication a(argc, argv);
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    <span>//设置tr以及地域。</span>
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    QTextCodec::setCodecForLocale(QTextCodec::codecForName("<span>GBK</span>"));
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    QTextCodec::setCodecForCStrings(QTextCodec::codecForName("<span>GBK</span>"));
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    QTextCodec::setCodecForTr(QTextCodec::codecForName("<span>GBK</span>"));
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    <span>//添加库加载路径。</span>
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    QCoreApplication::addLibraryPath(QCoreApplication::applicationDirPath() + '/' + PLUGINS_NAME);
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    Widget w;
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    w.show();
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    <span>return</span> a.exec();
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}
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注意:tr只有在类中已经继承了QObject时才可以直接使用,否则可以使用QObject::tr()。

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