The type org.springframework.context.support.AbstractApplicationContext cannot be resolved

在 myeclipse中，使用 jdk6和7，并使用 spring-framework-5.0.2.RELEASE 时，编写代码：

 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 public class MainApp {
    public static void main(String[] args) {
        ApplicationContext ac = new ClassPathXmlApplicationContext("Beans.xml");
       HelloWorld obj = (HelloWorld) context.getBean("helloWorld");
       obj.getMessage();

    }
 }

总会报错：

The type org.springframework.context.support.AbstractApplicationContext cannot be resolved. It is indirectly referenced from
required .class files

以及

Type mismatch: cannot convert from ClassPathXmlApplicationContext to ApplicationContext

原因， spring-framework-5.0.2.RELEASE  需要使用 jdk8。