idea 2020 设置默认maven、gradle、jdk

idea设置默认maven配置, 避免每次设置maven

• File–> New Porjects Setting—>Settings for New Projects
  

• 默认maven设置：Settings for New Projects—>Build,Execution,Deployment–>User sttings file—>Apply—>OK
  老版本idea配置路径：Other Setting—>Default Settings—>设置maven—>Apply—>OK
  

• 默认 Gradle设置：Settings for New Projects—>Build,Execution,Deployment–>Gradle user home–>Apply—>OK
  

• 默认 JDK配置File–> New Porjects Setting–>Structure for New Projects–> Project --> Project SDK