StackOverflowError当的顺序中的一个对象Java
https://stackoverflow.com/questions/438875
-
22-07-2019 - |
italiano
english
français
española
中国
日本の
العربية
Deutsch
한국어
Português
Russian题
我写的应用程序在Java使用摇摆。我想要实现的功能的保存和载荷的模拟国家对在模拟中，我运行。整个仿真是保持作为一个目的，断摇摆。我想serialize我的模拟课本代码:
public void saveSimulationState(String simulationFile) {
try {
Serializable object = this.sm;
ObjectOutputStream objstream = new ObjectOutputStream(new FileOutputStream(simulationFile));
objstream.writeObject(object);
objstream.close();
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
但我得到的以下错误(这是巨大的).
Exception in thread "AWT-EventQueue-0" java.lang.StackOverflowError
at java.io.ObjectStreamClass.processQueue(ObjectStreamClass.java:2234)
at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:266)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1106)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1474)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
at java.util.ArrayList.writeObject(ArrayList.java:570)
at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1461)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1474)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
at java.util.ArrayList.writeObject(ArrayList.java:570)
at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1461)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1474)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
at java.util.ArrayList.writeObject(ArrayList.java:570)
at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1461)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1474)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
at java.util.ArrayList.writeObject(ArrayList.java:570)
at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1461)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1474)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
at java.util.ArrayList.writeObject(ArrayList.java:570)
at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1461)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1474)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
at java.util.ArrayList.writeObject(ArrayList.java:570)
at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1461)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1474)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
at java.util.ArrayList.writeObject(ArrayList.java:570)
at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1461)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1474)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
at java.util.ArrayList.writeObject(ArrayList.java:570)
at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1461)
谁能告诉我是什么导致这种异常?
解决方案
有趣的员额从陈：
在你的情况：
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1474)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
at java.util.ArrayList.writeObject(ArrayList.java:570)
at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1461)
如果你去打猎通过你的缺陷跟踪数据库试图看看这是否是一个已知的问题或不，搜索顶部的功能在该堆不可能找到什么有趣的。那是因为堆溢出往往发生在一个随机的点在递归;每个堆栈溢出表面上看起来不同是从其他每一个即使他们是同一堆溢出。
一旦你过去的初始动荡，该堆跟踪安定下来到一个漂亮的重复模式的组成相同的x功能。
标识所开始的重复模式并不重要，因为起始点将是不同的，对每一个崩溃，以同样的方式，确注意它超过你唱歌的范围而变化，从崩溃崩溃。一旦你确定重复的一部分，选择一个功能自认是有些不寻常和搜索它 你的数据库的缺陷.
例如, 一默认 ArrayList 序列化。
你在这里 GrahPanel 指的是一个 Simulation 这指的是 Graph, 可能的长 ArrayList 感应器和边缘...
Java化保持一个记录的每一个目写入流。如果同样的对象是遇到的第二时间，只有一个参照它写入流，而不是一个第二副本，对象；所以圆引用并不是问题。
但是，化是容易受到堆溢出对于某些种类的结构；例如， 一个长链表没有特别writeObject()方法将通过递归化写每个链接。如果你已经有了一个100,000链接，你要尝试使用100,000堆框架，并很可能失败StackOverflowError.
这是可能的定义writeObject()方法为这样的列表类，当第一链接是化，只需行走的清单，并将每个链反复;这将防止默认递机制的使用。
其他提示
您应该考虑重新实现以仅序列化的相关数据（而不是默认情况下，整个载物结构）的模拟类的writeObject / readObject方法或标注瞬态你不被序列化对象。
如果需要，也可以使用Externalizable接口。
顺便说一句，你可能需要阅读这篇有趣的文章开始用。
您已经有了一些深度嵌套的ArrayList
我想，也许它只是要深入第一，这意味着它会在底部的传感器，这是太深了。
也许你可以创建一个传感器与底部传感器开始自定义结构？
或者，也许你就必须提供自己的序列来处理呢？ http://java.sun.com/developer/technicalArticles/Programming/serialization/
您应该为要存储的对象创建一个容器类。我不会存储完整的 this 对象及其内部的所有逻辑。
逐个字段存储第一个字段，以查找太大而无法以这种方式存储的元素。然后在方法中放置一个断点并查看字段元素。该元素是否包含相互链接的链接？
和你所做的一切，只是使用的XStream，而是如果你只是想保存到文件中。之后
运行Java与更大的堆叠
此代码应该作为一个模型，因为它解决了上系列化计算器的问题。它采用递归的内存就地。虽然不适合被concidered普遍作为串行器，它序列化和反序列化将其用测试。
的类import java.io.*;
import java.util.*;
import java.lang.reflect.*;
import android.util.*;
public class SequentialObjectInputStream extends DataInputStream implements ObjectInput
{
interface FieldPutAction
{
void put(Object obj, Field field) throws IllegalAccessException, IOException;
}
interface ArrayPutAction
{
void put(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException;
}
public HashMap<Class, FieldPutAction> Primatives;
public HashMap<Class, ArrayPutAction> ArrayPrimatives;
public SequentialObjectInputStream(InputStream stream)
{
super(stream);
Primatives = new HashMap<Class, FieldPutAction>();
try
{
Primatives.put(boolean.class,
new FieldPutAction()
{
public void put(Object obj, Field field) throws IllegalAccessException, IOException
{
boolean x = readBoolean();
field.setBoolean(obj, x);
}
});
Primatives.put(byte.class,
new FieldPutAction()
{
public void put(Object obj, Field field) throws IllegalAccessException, IOException
{
byte x = readByte();
field.setByte(obj, x);
}
});
Primatives.put(short.class,
new FieldPutAction()
{
public void put(Object obj, Field field) throws IllegalAccessException, IOException
{
short x = readShort();
field.setShort(obj, x);
}
});
Primatives.put(int.class,
new FieldPutAction()
{
public void put(Object obj, Field field) throws IllegalAccessException, IOException
{
int x = readInt();
field.setInt(obj, x);
}
});
Primatives.put(long.class,
new FieldPutAction()
{
public void put(Object obj, Field field) throws IllegalAccessException, IOException
{
long x = readLong();
field.setLong(obj, x);
}
});
Primatives.put(char.class,
new FieldPutAction()
{
public void put(Object obj, Field field) throws IllegalAccessException, IOException
{
char x = readChar();
field.setChar(obj, x);
}
});
Primatives.put(float.class,
new FieldPutAction()
{
public void put(Object obj, Field field) throws IllegalAccessException, IOException
{
float x = readFloat();
field.setFloat(obj, x);
}
});
Primatives.put(double.class,
new FieldPutAction()
{
public void put(Object obj, Field field) throws IllegalAccessException, IOException
{
double x = readDouble();
field.setDouble(obj, x);
}
});
Primatives.put(String.class,
new FieldPutAction()
{
public void put(Object obj, Field field) throws IllegalAccessException, IOException
{
String x = readUTF();
field.set(obj, x);
}
});
} catch(Exception e)
{
Log.e("SOb", Log.getStackTraceString(e));
}
ArrayPrimatives = new HashMap<Class, ArrayPutAction>();
try
{
ArrayPrimatives.put(boolean.class,
new ArrayPutAction()
{
public void put(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
boolean x = readBoolean();
Array.setBoolean(obj, index, x);
}
});
ArrayPrimatives.put(byte.class,
new ArrayPutAction()
{
public void put(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
byte x = readByte();
Array.setByte(obj, index, x);
}
});
ArrayPrimatives.put(short.class,
new ArrayPutAction()
{
public void put(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
short x = readShort();
Array.setShort(obj, index, x);
}
});
ArrayPrimatives.put(int.class,
new ArrayPutAction()
{
public void put(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
int x = readInt();
Array.setInt(obj, index, x);
}
});
ArrayPrimatives.put(long.class,
new ArrayPutAction()
{
public void put(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
long x = readLong();
Array.setLong(obj, index, x);
}
});
ArrayPrimatives.put(char.class,
new ArrayPutAction()
{
public void put(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
char x = readChar();
Array.setChar(obj, index, x);
}
});
ArrayPrimatives.put(float.class,
new ArrayPutAction()
{
public void put(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
float x = readFloat();
Array.setFloat(obj, index, x);
}
});
ArrayPrimatives.put(double.class,
new ArrayPutAction()
{
public void put(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
double x = readDouble();
Array.setDouble(obj, index, x);
}
});
ArrayPrimatives.put(String.class,
new ArrayPutAction()
{
public void put(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
String x = readUTF();
Array.set(obj, index, x);
}
});
} catch(Exception e)
{
Log.e("SOb", Log.getStackTraceString(e));
}
}
@Override
public Object readObject() throws ClassNotFoundException, IOException
{
long Total = readLong();
Log.i("SOb", "readObject : " + Long.toString(Total) + " objects in graph");
HashMap<Long, Object> References = new HashMap<Long, Object>();
long currentId = 1;
HashMap<Object, HashMap<Field, Long>> refCache =
new HashMap<Object, HashMap<Field, Long>>();
final HashMap<Object, HashMap<Integer, Long>> arefCache =
new HashMap<Object, HashMap<Integer,Long>>();
for (int I=0; I < Total; I++)
{
String Name = readUTF();
Class C = Class.forName(Name);
Log.i("SOb", "Object of "+C.getCanonicalName() +" on graph");
int adim = 0;
Object O = null;
if (C.isArray())
{
Class ComponentType = C.getComponentType();
int Size = readInt();
Log.i("SOb", "array of "+ComponentType.getCanonicalName() + ", " + Long.toString(Size) + " elements");
O = Array.newInstance(ComponentType, Size);
References.put(currentId, O);
currentId++;
ArrayPutAction action = null;
if (ArrayPrimatives.keySet().contains(ComponentType))
{
action = ArrayPrimatives.get(ComponentType);
} else
{
arefCache.put(O, new HashMap<Integer, Long>());
action = new ArrayPutAction()
{
public void put(Object O, int Index) throws ArrayIndexOutOfBoundsException , IOException
{
long Ref = readLong();
arefCache.get(O).put(Index, Ref);
}
};
}
for (int index=0; index< Size; index++)
{
action.put(O,index);
}
} else
{
try
{
O =
C.getConstructor(new Class[0]).newInstance(new Object[0]);
} catch(InstantiationException e)
{
Log.e("SOb", Log.getStackTraceString(e));
} catch(NoSuchMethodException e)
{
Log.e("SOb", Log.getStackTraceString(e));
} catch(IllegalAccessException e)
{
Log.e("SOb", Log.getStackTraceString(e));
} catch(InvocationTargetException e)
{
Log.e("SOb", Log.getStackTraceString(e));
}
References.put(currentId, O);
currentId++;
refCache.put(O, new HashMap<Field, Long>());
for (Field F : C.getFields())
{
if (F.isAccessible())
{
Class T = F.getType();
if (Primatives.containsKey(T))
{
try
{
Primatives.get(T).put(O, F);
} catch (IllegalAccessException e)
{
}
} else
{
refCache.get(O).put(F, readLong());
}
}
}
}
}
for (long I=0; I < Total; I++)
{
Object O = References.get(I+1);
Class C = O.getClass();
//Log.i("SOb", "get reference "+Long.toString(I)+" "+C.getCanonicalName());
if (C.isArray())
{
HashMap<Integer,Long> aref_table = arefCache.get(O);
if (ArrayPrimatives.containsKey(C.getComponentType()) == false)
{
int len = Array.getLength(O);
for (int index=0; index<len; index++)
{
long r = aref_table.get(index);
Object ref = r == 0 ? null : References.get(r);
Array.set(O, index, ref);
}
}
} else
{
HashMap<Field, Long> ref_table = refCache.get(O);
for (Field F : C.getFields())
{
if (F.isAccessible())
{
Class T = F.getType();
if (Primatives.containsKey(T) == false)
{
try
{
long r = ref_table.get(F);
Object ref = r == 0 ? null : References.get(r);
F.set(O, ref);
} catch (IllegalAccessException e)
{
Log.e("SOb", Log.getStackTraceString(e));
}
}
}
}
}
}
return References.get((Long) (long) 1);
}
}
import java.io.*;
import java.util.*;
import java.lang.reflect.*;
import android.util.*;
public class SequentialObjectOutputStream extends DataOutputStream
implements ObjectOutput
{
interface FieldGetAction
{
void get(Object obj, Field field) throws IllegalAccessException, IOException;
}
interface ArrayGetAction
{
void get(Object array, int Index) throws ArrayIndexOutOfBoundsException, IOException;
}
public HashMap<Class, FieldGetAction> Primatives;
public HashMap<Class, ArrayGetAction> ArrayPrimatives;
public SequentialObjectOutputStream(OutputStream stream)
{
super(stream);
Primatives = new HashMap<Class, FieldGetAction>();
try
{
Primatives.put(boolean.class,
new FieldGetAction()
{
public void get(Object obj, Field field) throws IllegalAccessException, IOException
{
boolean x = field.getBoolean(obj);
writeBoolean(x);
}
});
Primatives.put(byte.class,
new FieldGetAction()
{
public void get(Object obj, Field field) throws IllegalAccessException, IOException
{
byte x = field.getByte(obj);
writeByte(x);
}
});
Primatives.put(short.class,
new FieldGetAction()
{
public void get(Object obj, Field field) throws IllegalAccessException, IOException
{
short x = field.getShort(obj);
writeShort(x);
}
});
Primatives.put(int.class,
new FieldGetAction()
{
public void get(Object obj, Field field) throws IllegalAccessException, IOException
{
int x = field.getInt(obj);
writeInt(x);
}
});
Primatives.put(long.class,
new FieldGetAction()
{
public void get(Object obj, Field field) throws IllegalAccessException, IOException
{
long x = field.getLong(obj);
writeLong(x);
}
});
Primatives.put(char.class,
new FieldGetAction()
{
public void get(Object obj, Field field) throws IllegalAccessException, IOException
{
char x = field.getChar(obj);
writeChar(x);
}
});
Primatives.put(float.class,
new FieldGetAction()
{
public void get(Object obj, Field field) throws IllegalAccessException, IOException
{
float x = field.getFloat(obj);
writeFloat(x);
}
});
Primatives.put(double.class,
new FieldGetAction()
{
public void get(Object obj, Field field) throws IllegalAccessException, IOException
{
double x = field.getDouble(obj);
writeDouble(x);
}
});
Primatives.put(String.class,
new FieldGetAction()
{
public void get(Object obj, Field field) throws IllegalAccessException, IOException
{
String x = (String) field.get(obj);
writeUTF(x);
}
});
} catch(Exception e)
{
Log.e("SOb", Log.getStackTraceString(e));
}
ArrayPrimatives = new HashMap<Class, ArrayGetAction>();
try
{
ArrayPrimatives.put(boolean.class,
new ArrayGetAction()
{
public void get(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
boolean x = Array.getBoolean(obj, index);
writeBoolean(x);
}
});
ArrayPrimatives.put(byte.class,
new ArrayGetAction()
{
public void get(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
byte x = Array.getByte(obj, index);
writeByte(x);
}
});
ArrayPrimatives.put(short.class,
new ArrayGetAction()
{
public void get(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
short x = Array.getShort(obj, index);
writeShort(x);
}
});
ArrayPrimatives.put(int.class,
new ArrayGetAction()
{
public void get(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
int x = Array.getInt(obj, index);
writeInt(x);
}
});
ArrayPrimatives.put(long.class,
new ArrayGetAction()
{
public void get(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
long x = Array.getLong(obj, index);
writeLong(x);
}
});
ArrayPrimatives.put(char.class,
new ArrayGetAction()
{
public void get(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
char x = Array.getChar(obj, index);
writeChar(x);
}
});
ArrayPrimatives.put(float.class,
new ArrayGetAction()
{
public void get(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
float x = Array.getFloat(obj, index);
writeFloat(x);
}
});
ArrayPrimatives.put(double.class,
new ArrayGetAction()
{
public void get(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
double x = Array.getDouble(obj, index);
writeDouble(x);
}
});
ArrayPrimatives.put(String.class,
new ArrayGetAction()
{
public void get(Object obj, int index) throws ArrayIndexOutOfBoundsException, IOException
{
String x = (String) Array.get(obj, index);
writeUTF(x);
}
});
} catch(Exception e)
{
Log.e("SOb", Log.getStackTraceString(e));
}
}
class State
{
public ArrayList<Object> OStack = new ArrayList<Object>();
public long currentId = 1;
public HashMap<Object, Long> References = new HashMap<Object, Long>();
}
public void writeObject(Object A) throws IOException, NotSerializableException
{
final State state = new State();
state.OStack.add(0, A);
LinkedList<Object> ForStack = new LinkedList<Object>();
while (!(state.OStack.size() == 0))
{
Object Current = state.OStack.get(0);
state.OStack.remove(0);
if (((Serializable) Current) == null)
{
throw new NotSerializableException();
}
//Type C = Current.getClass();
Class C = Current.getClass();
Log.i("SOb", "placing #"+Long.toString(state.currentId)+" of "+C.getCanonicalName()+" on graph");
state.References.put(Current, state.currentId);
state.currentId++;
ForStack.add(Current);
if (C.isArray())
{
//Array array = (Array) Current;
Class Ctype = C.getComponentType();
if (ArrayPrimatives.keySet().contains(Ctype) == false)
{
for (int I=0; I<Array.getLength(Current); I++)
{
Object o = Array.get(Current, I);
if ((o != null) && (state.References.keySet().contains(o) == false))
{
if (state.OStack.contains(o) == false) state.OStack.add(state.OStack.size(), o);
}
}
}
} else
{
for (Class Cur = C; Cur != null; Cur = Cur.getSuperclass())
{
Field[] fields = Cur.getDeclaredFields();
for (Field f : fields)
{
if (Modifier.isStatic(f.getModifiers()))
{
continue;
}
f.setAccessible(true);
if (f.isAccessible() == false)
{
// Log.i("SOb", " isAccessible = false");
continue;
}
Class type = f.getType();
//Log.i("SOb", " field \""+f.getName()+"\" of "+type.getCanonicalName());
if (Primatives.keySet().contains(type) == false)
{
try
{
Object o = f.get(Current);
if ((o != null) && (state.References.keySet().contains(o) == false))
{
if (state.OStack.contains(o) == false) state.OStack.add(state.OStack.size(), o);
}
} catch (IllegalAccessException e)
{
Log.e("SOb", Log.getStackTraceString(e));
}
}
}
}
}
}
writeLong(state.References.size());
for (Object O : ForStack )
{
Serializable s = (Serializable) O;
// if (s != null)
{
Class cl = O.getClass();
String name = cl.getName();
writeUTF(name);
if (cl.isArray())
{
Class components = cl.getComponentType();
ArrayGetAction action;
//Array array = (Array) O;
if (ArrayPrimatives.keySet().contains(components))
{
action = ArrayPrimatives.get(components);
} else
{
action = new ArrayGetAction()
{
public void get(Object array, int index) throws ArrayIndexOutOfBoundsException, IOException
{
Object O = Array.get(array, index);
if (O==null) writeLong(0);
else writeLong(state.References.get(O));
}
};
}
int length = Array.getLength(O);
writeInt(length);
for (int I=0; I<length; I++)
{
action.get(O, I);
}
} else
{
for (Class Cur = cl; Cur != null; Cur = Cur.getSuperclass())
{
Field[] fields = Cur.getDeclaredFields();
for (Field F : fields)
{
Class FieldType = F.getType();
F.setAccessible(true);
if (F.isAccessible() && (Modifier.isStatic(FieldType.getModifiers())))
{
FieldGetAction action;
//Array array = (Array) O;
if (Primatives.keySet().contains(FieldType))
{
action = Primatives.get(FieldType);
} else
{
action = new FieldGetAction()
{
public void get(Object obj, Field index) throws IllegalAccessException, IOException
{
Object O = index.get(obj);
if (O==null) writeLong(0);
else writeLong(state.References.get(O));
}
};
}
try
{
action.get(O, F);
} catch (IllegalAccessException e)
{
Log.e("SOb", Log.getStackTraceString(e));
}
}
}
}
}
}
}
}
}
我也有类似的问题。很多狩猎之后，我发现设计处理深度嵌套对象KRYO的一个分支。通过 https://github.com/EsotericSoftware/kryo/issues/103 ，克隆和mvn clean install https://github.com/romix/kryo/tree/kryo- 2.23-延续的。它目前com.esotericsoftware.kryo:kryo:2.23-SNAPSHOT。
不隶属于 StackOverflow
