1.General -> Workspace -> Text file encoding -> Other -> UTF-8
2.General -> Appearance -> Colors and font -> Text Font -> 设置字体
3.Maven -> Uer Settings -> Browse按钮取得 mavensettings.xml
4.Java -> Editor -> Content Assist -> Auto Activation -> Auto activation triggers for Java :.abcdefghijklmnoqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXUYZ