Question

它显示了一些错误，如

C:\Users\Vishnu\Sites\simple_cms>rails s

 E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/mysql2-0.3.16/lib/mysql2.rb:8:in
`require': 126: The specified module could not be found.   - E:/installations/Ru
by/lib/ruby/gems/2.0.0/extensions/x64-mingw32/2.0.0/mysql2-0.3.16/mysql2/mysql2.
so (LoadError)
        from E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/mysql2-0.3.16/lib/my
sql2.rb:8:in `<top (required)>'
        from E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/bundler-1.6.5/lib/bu
ndler/runtime.rb:76:in `require'
        from E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/bundler-1.6.5/lib/bu
ndler/runtime.rb:76:in `block (2 levels) in require'
        from E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/bundler-1.6.5/lib/bu
ndler/runtime.rb:72:in `each'
        from E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/bundler-1.6.5/lib/bu
ndler/runtime.rb:72:in `block in require'
        from E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/bundler-1.6.5/lib/bu
ndler/runtime.rb:61:in `each'
        from E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/bundler-1.6.5/lib/bu
ndler/runtime.rb:61:in `require'
        from E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/bundler-1.6.5/lib/bu
ndler.rb:132:in `require'
        from C:/Users/Vishnu/Sites/simple_cms/config/application.rb:7:in `<top (
required)>'
        from E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/railties-4.1.4/lib/r
ails/commands/commands_tasks.rb:79:in `require'
        from E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/railties-4.1.4/lib/r
ails/commands/commands_tasks.rb:79:in `block in server'
        from E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/railties-4.1.4/lib/r
ails/commands/commands_tasks.rb:76:in `tap'
        from E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/railties-4.1.4/lib/r
ails/commands/commands_tasks.rb:76:in `server'
        from E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/railties-4.1.4/lib/r
ails/commands/commands_tasks.rb:40:in `run_command!'
        from E:/installations/Ruby/lib/ruby/gems/2.0.0/gems/railties-4.1.4/lib/r
ails/commands.rb:17:in `<top (required)>'
        from bin/rails:4:in `require'
        from bin/rails:4:in `<main>'

Answer 1

要么你缺少Gemfile中的mysql2 gem。或者宝石没有编译。尝试：

gem install mysql2

并运行：

bundle

在启动服务器之前，确保一切都已结束。

Answer 2

我遇到了一些问题，并为遇到此问题的任何人编写了一步一步的说明：

下载：（1）https://structure-svm-map.googlecode.com/files/svm-map-win.zip （2）http://sourceforge.net/projects/mingw/files/Installer/

第0步。在命令提示符中输入命令卸载mysql2： gem uninstall mysql2

第1步。将gendef.exe从svm-map（1）复制到MySql服务器目录，并在命令行中运行以下命令： gendef.exe libmysql.dll

第2步。安装MinGW（2）并安装基本存储库记住MinGW的安装位置添加＆＃34; E：\ MinGW \ bin＆＃34; （根据应用程序的安装位置而改变）到PATH（环境变量）

第3步。打开命令行的新实例并导航到MySql Server目录（我的E：\ Program Files \ MySQL \ MySQL Server 5.6）运行以下命令行： dlltool -v --dllname libmysql.dll --def libmysql.def --output-lib libmysql.lib

第4步。使用rubygems在命令行中使用以下选项安装mysql2（根据MySQL服务器的位置进行更改）： gem install mysql2 --no-rdoc --no-ri - ＆＃39; - withmysql-dir =＆＃34; E：\ Program Files \ MySQL \ MySQL Server 5.6 \ bin＆＃34; --with-mysql-lib =＆＃34; E：\ Program Files \ MySQL \ MySQL Server 5.6 \ lib＆＃34; --with-mysql-include =＆＃34; E：\ Program Files \ MySQL \ MySQL Server 5.6 \ include＆＃34;＆＃39;

第5步。将libmysql.dll从MySQL服务器目录复制到＆＃34; E：\ Ruby200-x64 \ bin＆＃34; （根据应用程序的安装位置而变化）

第6步。试试＆＃34; rails server＆＃34;在命令行中确保安装是否正确完成

rails服务器没有启动

2 个答案: