Gem::installererror:the ' json ' native gem requires installed build tools

After building the Ruby on Rails environment, running the bundle command in a new project encounters the following error:

Workaround: Install Devkit

To rubyinstaller website download page Select the Devkit download for your system (here I downloaded the last one):

When the download is complete, double-click devkit-mingw64-64-4.7.2-20130224-1432-sfx.exe:

Set the extracted folder (for example, C:\DevKit), after decompression to see, the contents of the folder below:

Enter the directory on the command line and initialize the command:Ruby dk.rb init, prompting after initialization:

Then enter the Ruby dk.rb Install for installation:

Oh~my ladygaga~~ so fast~~

The above error no longer occurs when running the bundle command:

Happy, turn a circle ~ ~

Gem::installererror:the ' json ' native gem requires installed build tools