第二步：这篇文章中未解决的问题：

程序可以编译，但是链接找不到libmysql。解决的办法就是将libmysql.dll放到Binaries中。

文章中使用了绝对路径，比较LOW，估计作者也是稀里糊涂，没有深究。我们要相对路径！！！ 做法：将文章中的PrivateIncludePaths改成PublicIncludePaths.为什么这么改就可以了。可以看一下这两个函数的注释！有些朋友使用比较新的UE版本，可能会遇到RulesCompiler.GetModuleFileName(String)已过时的问题，解决办法如下：

RulesAssembly RA;
FileReference CheckProjectFile;
UProjectInfo.TryGetProjectForTarget("工程名", out CheckProjectFile);
RA = RulesCompiler.CreateProjectRulesAssembly(CheckProjectFile);
FileReference FR = RA.GetModuleFileName(this.GetType().Name);
string ModulePath = Path.GetDirectoryName(FR.CanonicalName);

第三步：到这一步，很多新手花了很多时间，欣喜若狂。被UE折腾的扎耳挠思。终于编译，调用没有问题了。谢天谢天。那么问题来了，这时候发现 读取MYSQL中的中文数据后显示的都是乱码！！(如果你MySQL还没连上，请不用往下看了。。)

中文乱码无非就是编码格式问题。MySQL现在默认都是UTF8编码。不存在语言障碍。那为什么还是乱码呢？当然，还是编码问题！

解决乱码问题：

在mysql_real_connect后，程序中设置编码为mysql_set_character_set(mysql, "utf8");【可能有人问，MySQL不是默认UTF8吗？为什么还要设置？sorry,就得设置，否则无法正确显示。修改MySQL配置文件也不行】。

将读出的数据使用UTF8_TO_TCHAR（）函数转码。到此，中文乱码问题解决。有了TCHAR，就拥有了FString.什么都不怕了！

第四步：如何访问MySQL数据库，使用语句还是存储过程？我的建议是，都搞搞。那个爽，用那个。存储过程是MSSQL的TSQL集合，访问数据库效 率高，速度快！以前MySQL都没有，终于良心发现，加上了。在目前的高版本中基本都支持。那么问题来了，怎么调用呢？请百度，大把的文章！

using System.IO;namespace UnrealBuildTool.Rules
{public class MySQLSupport : ModuleRules{public MySQLSupport(ReadOnlyTargetRules Target) : base(Target){PrivateDependencyModuleNames.AddRange(new string[] {"Core","CoreUObject","Engine",});RulesAssembly RA;FileReference CheckProjectFile;UProjectInfo.TryGetProjectForTarget("VRHome", out CheckProjectFile);RA = RulesCompiler.CreateProjectRulesAssembly(CheckProjectFile);FileReference FR = RA.GetModuleFileName(this.GetType().Name);string ModulePath = Path.GetDirectoryName(FR.CanonicalName);//string ModulePath = Path.GetDirectoryName(RulesCompiler.GetModuleFilename(this.GetType().Name));         // gets the directory path of this module        string ThirdPartyPath = Path.GetFullPath(Path.Combine(ModulePath, "../../ThirdParty/"));                 // gets the ThirdParty folder directory path        string MySQLConnectorPath = ThirdPartyPath + "MySQL Connector.C6.1/";                                    // gets the MySQL Connector.C 6.1 folder path        string MySQLConnectorLibraryPath = MySQLConnectorPath + "lib/";                                          // gets the path of the lib folder        string MySQLConnectorIncludePath = MySQLConnectorPath + "include/";                                      // gets the path of the include folder        string MySQLConnectorImportLibraryName = Path.Combine(MySQLConnectorLibraryPath, "libmysql.lib");        // gets the file path and name of the libmysql.lib static import library        string MySQLConnectorDLLName = Path.Combine(MySQLConnectorLibraryPath, "libmysql.dll");                  // gets the file path and name of libmysql.dll        if (!File.Exists(MySQLConnectorImportLibraryName))                                                       // check to ensure the static import lib can be located, or else we'll be in trouble        {throw new BuildException(string.Format("{0} could not be found.", MySQLConnectorImportLibraryName));        // log an error message explaining what went wrong if not found        }if (!File.Exists(MySQLConnectorDLLName))                                                                 // check to make sure the dll can be located or else we'll be in trouble        {throw new BuildException(string.Format("{0} could not be found.", MySQLConnectorDLLName));           // log an error message explaining what went wrong if not found        }PublicIncludePaths.Add(MySQLConnectorIncludePath);                                                       // add the "include" folder to our dependencies. I've chosen PrivateIncludePaths since I hide the mysql headers from external code        PublicLibraryPaths.Add(MySQLConnectorLibraryPath);                                                       // add the "lib" folder to our dependencies        PublicAdditionalLibraries.Add(MySQLConnectorImportLibraryName);                                          // add libmysql.lib static import library as a dependency        PublicDelayLoadDLLs.Add(MySQLConnectorDLLName);                                                          // add libmysql.dll as a dll    RuntimeDependencies.Add(new RuntimeDependency("$(ProjectDir)/Binaries/Win64/libmysql.dll"));             // 自动添加libmysql.dll到指定的打包目录中}}
}