如何获得spring上下文的方法总结

public class Sheet {
  // 颜色
  private String color;
  // 长度
  private String length;
  // 省略 set get
}  

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans.xsd">

  <bean id="sheet" class="com.zszxz.bean.Sheet">
    <property name="color" value="pink"></property>
  </bean>
</beans>

  public static void main(String[] args) {
    // xml路径
    String path = "C:\\java\\workspaceforresource\\study-spring\\obtain-bean-way\\src\\main\\resources\\sheet.xml";
    // 从文件系统中获取上下文
    ApplicationContext applicationContext = new FileSystemXmlApplicationContext(path);
    // 获取bean
    Sheet sheet = (Sheet) applicationContext.getBean("sheet");
    // pink
    System.out.println(sheet.getColor());
  }

  public static void main(String[] args) {
    // 获取上下文
    ApplicationContext applicationContext = new ClassPathXmlApplicationContext("sheet.xml");
    // 获得实例
    Sheet sheet = (Sheet) applicationContext.getBean("sheet");
    // pink
    System.out.println(sheet.getColor());
  }

/**
 * @Author lsc
 * <p> sheet配置类等同于sheet.xml</p>
 */
@Configuration
public class SeetConfig {

  // 往配置类中注入Bean
  @Bean
  public Sheet sheet(){
    // 创建对象
    Sheet sheet = new Sheet();
    // 设置属性
    sheet.setColor("pink");
    return sheet;
  }
}

  public static void main(String[] args) {
    // 获取上下文
    ApplicationContext applicationContext = new AnnotationConfigApplicationContext(SeetConfig.class);
    // 获得实例
    Sheet sheet = (Sheet) applicationContext.getBean("sheet");
    // pink
    System.out.println(sheet.getColor());
  }