步驟如下:
(1)打開Intellij idea,點擊File->Settings或者CTRL+ALT+S快捷鍵,打開設置面板,先把如下圖上面的下拉框中改為Eclipse。然后在搜索框中搜索Keymap
(2)在右上角的搜索框中輸入completion,在MainMenu->Code->Completion->Basic
(3)右鍵點擊Basic,點擊Remove Ctrl+空格
(4)右鍵點擊Basic,點擊Add Keyboard Shortcut
(5)按Alt+/,點擊OK
到此,設置成功!