java.util.PriorityQueue

在学CB链之前我们需要回忆一下java.util.PriorityQueue，这个类是我们CC2的入口点。我们回忆一下CC2的链子

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java.util.PriorityQueue#readObject->heapify->siftDown->siftDownUsingComparator->TransformingComparator#compare->xxx#transform

在CC2中我们就已经知道了PriorityQueue可以调用到xxx.compare而在CB1中也是利用了这个来寻找compare类

commons.beanutils

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package CB;
import org.apache.commons.beanutils.*;

import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;

public class test {
    public static void main(String[] args) throws InvocationTargetException, IllegalAccessException, NoSuchMethodException {
        testBean bean = new testBean();
        String Name = (String) PropertyUtils.getProperty(bean, "name");
        PropertyUtils.setProperty(bean, "name", "Bob");
        System.out.println(bean.getname());

        HashMap map = new HashMap();
        map.put("name", "xiaoming");
        //map.put("age", 23);

        BeanUtils.populate(bean, map);
        BeanUtils.setProperty(bean, "age", "23");
        System.out.println(bean.getname());
        System.out.println(bean.getage());


    }
}

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package CB;

public class testBean {
    public String name="xiaoli";
    public Integer age;

    public Integer getage(){
        return age;
    }

    public void setage(Integer age){
        this.age=age;
    }

    public String getname(){
        return name;
    }
    public void setname(String name){
        this.name = name;
    }

}