新功能支持@Nullable注释
函数表达式样式GenericApplicationContext、annotationconfigapplicationcontext
bean API注册基本支持
@Nullable注释可用于方法、属性和参数
指示值为空
@空私有字符串id; @Nullable String getId (; publictvoidregisterbean @ nullablestringbeanname,ClassT beanClass,@Nullable SupplierT supplier,beandefinitioncustomion . }函数式样式genericapplicationcontextpackagecom.bri up.study.test; import com.bri up.study.entity.user; importorg.JUnit.Jupiter.API.test; importorg.spring framework.context.support.genericapplicationcontext; public class test _ spring5{ @ testpublicvoidtest _ genericapplicationcontext ()//1.genericapplicationcontext对象genenener context.registerbean('user ',User.class,()-new User ) ); //IOC上的User类//object user=context.get bean (' com.bri up.study.entity.user ' ); 对象用户1=context.get bean (user ); system.out.println(user1; }