启动Ruby on Rails服务器时遇Sqlite3错误，请求技术帮助

Hey there! Let's work through this SQLite3 issue you're hitting while trying to fire up your Rails server on Windows 8.1. I’ve dealt with similar compatibility hiccups before, so here are some practical steps to get things sorted:

• Check architecture compatibility between Ruby and SQLite3
  Since you installed the x86 version of SQLite3, make sure your Ruby installation is also x86 (32-bit). Run ruby -v in your command prompt—look for i386 or x86 in the output (e.g., ruby 2.7.5p203 (2021-11-24 revision f69aeb8314) [i386-mingw32]). If your Ruby is 64-bit, either uninstall it and install the 32-bit version, or switch to a 64-bit SQLite3 build to match.

• Reinstall the sqlite3 gem with explicit paths
  Sometimes the gem doesn’t automatically pick up your SQLite3 installation. Try these steps:

  1. Uninstall the existing gem first:
     gem uninstall sqlite3
  2. Reinstall it, pointing to your SQLite3’s include and lib directories (replace the paths with your actual SQLite3 install location):
     gem install sqlite3 --platform=ruby -- --with-sqlite3-include=C:\sqlite\include --with-sqlite3-lib=C:\sqlite\lib
     Note: Ensure your SQLite3 folder has an include folder with sqlite3.h and a lib folder with sqlite3.lib.

• Verify your PATH variable is working
  After adding SQLite3 to your system PATH, close and reopen your command prompt (changes to PATH don’t take effect in already open windows). Run sqlite3 --version—if it shows the SQLite version number, your PATH is set correctly. If not, double-check that the PATH entry points to the bin folder of your SQLite3 installation (where sqlite3.exe lives).

• Check your Rails project’s database configuration
  Open config/database.yml in your Rails project and make sure the SQLite3 settings are correct for the development environment. The default config should look like this:

  development:
    adapter: sqlite3
    database: db/development.sqlite3
    pool: 5
    timeout: 5000
  

  Avoid adding extra paths or configurations here unless you’re sure they’re needed.

• Manually copy the SQLite3 DLL to Ruby’s bin folder
  Windows sometimes has trouble locating DLL files even with PATH set. Find sqlite3.dll in your SQLite3 bin folder, then copy it to your Ruby installation’s bin directory (e.g., C:\Ruby27-x86\bin). Restart your command prompt and try running ruby bin\rails server again.

If none of these steps resolve the issue, sharing the exact error text (not just the screenshot) would help narrow things down further!

内容的提问来源于stack exchange，提问作者user4531234