一.当构造函数有集合时,只能用<CONSTRUCTOR-ARG>,不能用C-NAMESPACE 二. 1. package soundsystem.collections; import java.util.List; import soundsystem.CompactDisc; public class BlankDisc implements CompactDisc { private String title; private String artist; private List&l…

1. package soundsystem; import org.springframework.beans.factory.annotation.Autowired; public class CDPlayer implements MediaPlayer { private CompactDisc cd; @Autowired public CDPlayer(CompactDisc cd) { this.cd = cd; } public void play() { cd.play();…

spring的bean默认是单例,加载容器是会被化,spring会拦截其他再次请求bean的操作,返回spring已经创建好的bean. It appears that the CompactDisc is provided by calling sgtPeppers , but that’s notexactly true. Because the sgtPeppers() method is annotated with @Bean , Spring willintercept any ca…

1. package soundsystem; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; @Configuration public class CDPlayerConfig { @Bean public CompactDisc compactDisc() { return new SgtPeppers(); }…

一.在xml中引入xml,用<import> <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:c="http://www.…

一.注入简单属性 package soundsystem.properties; import org.springframework.beans.factory.annotation.Autowired; import soundsystem.CompactDisc; import soundsystem.MediaPlayer; public class CDPlayer implements MediaPlayer { private CompactDisc compactDisc; @A…

1. package soundsystem; public class SgtPeppers implements CompactDisc { private String title = "Sgt. Pepper's Lonely Hearts Club Band"; private String artist = "The Beatles"; public void play() { System.out.println("Playing "…

一.@ComponentScan 1. @Configuration //说明此类是配置文件 @ComponentScan //开启扫描,会扫描当前类的包及其子包 public class CDPlayerConfig { } 2. @ComponentScan(basePackages={"soundsystem", "video"})//扫描多个包 public class CDPlayerConfig { } 3. @ComponentScan(basePac…

1. package soundsystem; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.Configuration; @Configuration //说明此类是配置文件 //@ComponentScan //开启扫描,会扫描当前类的包及其子包 //@ComponentScan(basePackages={"soundsys…

一.SpringSecurity的模块 At the least, you’ll want to include the Core and Configuration modules in your application’s classpath. Spring Security is often used to secure web applications, and that’s certainly the case with the Spittr application, so you’l…