Java地带 Java 完整实现 PHP 的 serialize(序列化)和unserialize(反序列化) 方法
近期做项目，需要用到遗留的php系统的数据库，里面的某些字段是以对象存储的，所以网站找了下资料。
这个版本目前实现了对各种基本类型、数组、ArrayList、HashMap、和其它可序列化对象的序列化。实现了 PHP 5 中的 Serializable 接口的支持。实现了 PHP 中的 __sleep 和 __wakeup 魔术方法的支持。实现了对所有标示（N、b、i、d、s、a、O、R、r、U、C）的反序列化，在对标示 a 反序列化时，可以根据下标和值来自动判断是 ArrayList 还是 HashMap。并且在反序列化时可以强制指定反序列化的类型。
该类是静态类，无需也不能被实例化。除了包含了 serialize 和 unserialize 方法以外，还增加了一个 cast 方法，用来进行反序列化后的类型转换，该方法主要用于将反序列化后的 ArrayList 转化为数组或者 HashMap。
该类在 J2SE SDK 1.3.1 和更高版本上编译通过，更低版本的未做测试。
实现代码
PHPSerializer.java
/* PHPSerializer.java
*
* Author: Ma Bingyao <andot@ujn.edu.cn>
* Copyright: CoolCode.CN
* Version: 2.1
* LastModified: 2006-08-09
* This library is free. You can redistribute it and/or modify it.
* http://www.coolcode.cn/?p=202
*/
package org.phprpc.util;
import java.io.*;
import java.util.*;
import java.lang.reflect.*;
class UnSerializeResult {
public Object value;
public int hv;
public UnSerializeResult() {}
public UnSerializeResult(Object value, int hv) {
this.value = value;
this.hv = hv;
}
}
public class PHPSerializer {
private static Package[] __packages = Package.getPackages();
private static final byte __Quote = 34;
private static final byte __0 = 48;
private static final byte __1 = 49;
private static final byte __Colon = 58;
private static final byte __Semicolon = 59;
private static final byte __C = 67;
private static final byte __N = 78;
private static final byte __O = 79;
private static final byte __R = 82;
private static final byte __U = 85;
private static final byte __Slash = 92;
private static final byte __a = 97;
private static final byte __b = 98;
private static final byte __d = 100;
private static final byte __i = 105;
private static final byte __r = 114;
private static final byte __s = 115;
private static final byte __LeftB = 123;
private static final byte __RightB = 125;
private static final String __NAN = new String("NAN");
private static final String __INF = new String("INF");
private static final String __NINF = new String("-INF");
private PHPSerializer() {}
public static byte[] serialize(Object obj) {
return serialize(obj, "UTF-8");
}
public static byte[] serialize(Object obj, String charset) {
HashMap ht = new HashMap();
int hv = 1;
ByteArrayOutputStream stream = new ByteArrayOutputStream();
hv = serialize(stream, obj, ht, hv, charset);
byte[] result = stream.toByteArray();
try {
stream.close();
} catch (Exception e) {}
return result;
}
public static int serialize(ByteArrayOutputStream stream, Object obj, HashMap ht, int hv, String charset) {
if (obj == null) {
hv++;
writeNull(stream);
} else {
if (obj instanceof Boolean) {
hv++;
writeBoolean(stream, ((Boolean) obj).booleanValue() ? __1 : __0);
} else if ((obj instanceof Byte) || (obj instanceof Short)
|| (obj instanceof Integer)) {
hv++;
writeInteger(stream, getBytes(obj));
} else if (obj instanceof Long) {
hv++;
writeDouble(stream, getBytes(obj));
} else if (obj instanceof Float) {
hv++;
Float f = (Float) obj;
if (f.isNaN()) {
writeDouble(stream, getBytes(__NAN));
} else if (f.isInfinite()) {
if (f.floatValue() > 0) {
writeDouble(stream, getBytes(__INF));
} else {
writeDouble(stream, getBytes(__NINF));
}
} else {
writeDouble(stream, getBytes(f));
}
} else if (obj instanceof Double) {
hv++;
Double d = (Double) obj;
if (d.isNaN()) {
writeDouble(stream, getBytes(__NAN));
} else if (d.isInfinite()) {
if (d.doubleValue() > 0) {
writeDouble(stream, getBytes(__INF));
} else {
writeDouble(stream, getBytes(__NINF));
}
} else {
writeDouble(stream, getBytes(d));
}
} else if ((obj instanceof Character) || (obj instanceof String)) {
hv++;
writeString(stream, getBytes(obj, charset));
} else if (obj.getClass().isArray()) {
if (ht.containsKey(new Integer(obj.hashCode()))) {
writePointRef(stream, getBytes(ht.get(new Integer(obj.hashCode()))));
} else {
ht.put(new Integer(obj.hashCode()), new Integer(hv++));
hv = writeArray(stream, obj, ht, hv, charset);
}
} else if (obj instanceof ArrayList) {
if (ht.containsKey(new Integer(obj.hashCode()))) {
writePointRef(stream, getBytes(ht.get(new Integer(obj.hashCode()))));
} else {
ht.put(new Integer(obj.hashCode()), new Integer(hv++));
hv = writeArrayList(stream, (ArrayList) obj, ht, hv, charset);
}
} else if (obj instanceof HashMap) {
if (ht.containsKey(new Integer(obj.hashCode()))) {
writePointRef(stream, getBytes(ht.get(new Integer(obj.hashCode()))));
} else {
ht.put(new Integer(obj.hashCode()), new Integer(hv++));
hv = writeHashMap(stream, (HashMap) obj, ht, hv, charset);
}
} else {
if (ht.containsKey(new Integer(obj.hashCode()))) {
hv++;
writeRef(stream, getBytes(ht.get(new Integer(obj.hashCode()))));
} else {
ht.put(new Integer(obj.hashCode()), new Integer(hv++));
hv = writeObject(stream, obj, ht, hv, charset);
}
}
}
return hv;
}
private static void writeNull(ByteArrayOutputStream stream) {
stream.write(__N);
stream.write(__Semicolon);
}
private static void writeRef(ByteArrayOutputStream stream, byte[] r) {
stream.write(__r);
stream.write(__Colon);
stream.write(r, 0, r.length);
stream.write(__Semicolon);
}
private static void writePointRef(ByteArrayOutputStream stream, byte[] p) {
stream.write(__R);
stream.write(__Colon);
stream.write(p, 0, p.length);
stream.write(__Semicolon);
}
private static void writeBoolean(ByteArrayOutputStream stream, byte b) {
stream.write(__b);
stream.write(__Colon);
stream.write(b);
stream.write(__Semicolon);
}
private static void writeInteger(ByteArrayOutputStream stream, byte[] i) {
stream.write(__i);
stream.write(__Colon);
stream.write(i, 0, i.length);
stream.write(__Semicolon);
}
private static void writeDouble(ByteArrayOutputStream stream, byte[] d) {
stream.write(__d);
stream.write(__Colon);
stream.write(d, 0, d.length);
stream.write(__Semicolon);
}
private static void writeString(ByteArrayOutputStream stream, byte[] s) {
byte[] slen = getBytes(new Integer(s.length));
stream.write(__s);
stream.write(__Colon);
stream.write(slen, 0, slen.length);
stream.write(__Colon);
stream.write(__Quote);
stream.write(s, 0, s.length);
stream.write(__Quote);
stream.write(__Semicolon);
}
private static int writeArray(ByteArrayOutputStream stream, Object a, HashMap ht, int hv, String charset) {
int len = Array.getLength(a);
byte[] alen = getBytes(new Integer(len));
stream.write(__a);
stream.write(__Colon);
stream.write(alen, 0, alen.length);
stream.write(__Colon);
stream.write(__LeftB);
for (int i = 0; i < len; i++) {
writeInteger(stream, getBytes(new Integer(i)));
hv = serialize(stream, Array.get(a, i), ht, hv, charset);
}
stream.write(__RightB);
return hv;
}
private static int writeArrayList(ByteArrayOutputStream stream, ArrayList a, HashMap ht, int hv, String charset) {
int len = a.size();
byte[] alen = getBytes(new Integer(len));
stream.write(__a);
stream.write(__Colon);
stream.write(alen, 0, alen.length);
stream.write(__Colon);
stream.write(__LeftB);
for (int i = 0; i < len; i++) {
writeInteger(stream, getBytes(new Integer(i)));
hv = serialize(stream, a.get(i), ht, hv, charset);
}
stream.write(__RightB);
return hv;
}
private static int writeHashMap(ByteArrayOutputStream stream, HashMap h, HashMap ht, int hv, String charset) {
int len = h.size();
byte[] hlen = getBytes(new Integer(len));
stream.write(__a);
stream.write(__Colon);
stream.write(hlen, 0, hlen.length);
stream.write(__Colon);
stream.write(__LeftB);
for (Iterator keys = h.keySet().iterator(); keys.hasNext();) {
Object key = keys.next();
if ((key instanceof Byte) || (key instanceof Short)
|| (key instanceof Integer)) {
writeInteger(stream, getBytes(key));
} else if (key instanceof Boolean) {
writeInteger(stream, new byte[] { ((Boolean) key).booleanValue() ? __1 : __0 });
} else {
writeString(stream, getBytes(key, charset));
}
hv = serialize(stream, h.get(key), ht, hv, charset);
}
stream.write(__RightB);
return hv;
}
private static int writeObject(ByteArrayOutputStream stream, Object obj, HashMap ht, int hv, String charset) {
Class cls = obj.getClass();
if (obj instanceof java.io.Serializable) {
byte[] className = getBytes(getClassName(cls), charset);
byte[] classNameLen = getBytes(new Integer(className.length));
if (obj instanceof org.phprpc.util.Serializable) {
byte[] cs = ((org.phprpc.util.Serializable) obj).serialize();
byte[] cslen = getBytes(new Integer(cs.length));
stream.write(__C);
stream.write(__Colon);
stream.write(classNameLen, 0, classNameLen.length);
stream.write(__Colon);
stream.write(__Quote);
stream.write(className, 0, className.length);
stream.write(__Quote);
stream.write(__Colon);
stream.write(cslen, 0, cslen.length);
stream.write(__Colon);
stream.write(__LeftB);
stream.write(cs, 0, cs.length);
stream.write(__RightB);
} else {
Method __sleep;
try {
__sleep = cls.getMethod("__sleep", new Class[0]);
} catch (Exception e) {
__sleep = null;
}
int fl = 0;
Field[] f;
if (__sleep != null) {
String[] fieldNames;
try {
__sleep.setAccessible(true);
fieldNames = (String[]) __sleep.invoke(obj, new Object[0]);
} catch (Exception e) {
fieldNames = null;
}
f = getFields(obj, fieldNames);
} else {
f = getFields(obj);
}
AccessibleObject.setAccessible(f, true);
byte[] flen = getBytes(new Integer(f.length));
stream.write(__O);
stream.write(__Colon);
stream.write(classNameLen, 0, classNameLen.length);
stream.write(__Colon);
stream.write(__Quote);
stream.write(className, 0, className.length);
stream.write(__Quote);
stream.write(__Colon);
stream.write(flen, 0, flen.length);
stream.write(__Colon);
stream.write(__LeftB);
for (int i = 0, len = f.length; i < len; i++) {
int mod = f[i].getModifiers();
if (Modifier.isPublic(mod)) {
writeString(stream, getBytes(f[i].getName(), charset));
} else if (Modifier.isProtected(mod)) {
writeString(stream,
getBytes("\0*\0" + f[i].getName(), charset));
} else {
writeString(stream,
getBytes(
"\0" + getClassName(f[i].getDeclaringClass())
+ "\0" + f[i].getName(),
charset));
}
Object o;
try {
o = f[i].get(obj);
} catch (Exception e) {
o = null;
}
hv = serialize(stream, o, ht, hv, charset);
}
stream.write(__RightB);
}
} else {
writeNull(stream);
}
return hv;
}
private static byte[] getBytes(Object obj) {
try {
return obj.toString().getBytes("US-ASCII");
} catch (Exception e) {
return obj.toString().getBytes();
}
}
private static byte[] getBytes(Object obj, String charset) {
try {
return obj.toString().getBytes(charset);
} catch (Exception e) {
return obj.toString().getBytes();
}
}
private static String getString(byte[] data, String charset) {
try {
return new String(data, charset);
} catch (Exception e) {
return new String(data);
}
}
private static Class getClass(String className) {
try {
Class cls = Class.forName(className);
return cls;
} catch (Exception e) {}
for (int i = 0; i < __packages.length; i++) {
try {
Class cls = Class.forName(
__packages[i].getName() + "." + className);
return cls;
} catch (Exception e) {}
}
return null;
}
private static String getClassName(Class cls) {
return cls.getName().substring(cls.getPackage().getName().length() + 1);
}
private static Field getField(Object obj, String fieldName) {
Class cls = obj.getClass();
while (cls != null) {
try {
Field result = cls.getDeclaredField(fieldName);
int mod = result.getModifiers();
if (Modifier.isFinal(mod) || Modifier.isStatic(mod)) {
return null;
}
return result;
} catch (Exception e) {}
cls = cls.getSuperclass();
}
return null;
}
private static Field[] getFields(Object obj, String[] fieldNames) {
if (fieldNames == null) {
return getFields(obj);
}
int n = fieldNames.length;
ArrayList fields = new ArrayList(n);
for (int i = 0; i < n; i++) {
Field f = getField(obj, fieldNames[i]);
if (f != null) {
fields.add(f);
}
}
return (Field[]) fields.toArray(new Field[0]);
}
private static Field[] getFields(Object obj) {
ArrayList fields = new ArrayList();
Class cls = obj.getClass();
while (cls != null) {
Field[] fs = cls.getDeclaredFields();
for (int i = 0; i < fs.length; i++) {
int mod = fs[i].getModifiers();
if (!Modifier.isFinal(mod) && !Modifier.isStatic(mod)) {
fields.add(fs[i]);
}
}
cls = cls.getSuperclass();
}
return (Field[]) fields.toArray(new Field[0]);
}
public static Object newInstance(Class cls) {
try {
Constructor ctor = cls.getConstructor(new Class[0]);
int mod = ctor.getModifiers();
if (Modifier.isPublic(mod)) {
return ctor.newInstance(new Object[0]);
}
} catch (Exception e) {}
try {
Constructor ctor = cls.getConstructor(new Class[] { Integer.TYPE });
int mod = ctor.getModifiers();
if (Modifier.isPublic(mod)) {
return ctor.newInstance(new Object[] { new Integer(0) });
}
} catch (Exception e) {}
try {
Constructor ctor = cls.getConstructor(new Class[] { Boolean.TYPE });
int mod = ctor.getModifiers();
if (Modifier.isPublic(mod)) {
return ctor.newInstance(new Object[] { new Boolean(false) });
}
} catch (Exception e) {}
try {
Constructor ctor = cls.getConstructor(new Class[] { String.class });
int mod = ctor.getModifiers();
if (Modifier.isPublic(mod)) {
return ctor.newInstance(new Object[] { "" });
}
} catch (Exception e) {}
Field[] f = cls.getFields();
for (int i = 0; i < f.length; i++) {
if (f[i].getType() == cls && Modifier.isStatic(f[i].getModifiers())) {
try {
return f[i].get(null);
} catch (Exception e) {}
}
}
Method[] m = cls.getMethods();
for (int i = 0; i < m.length; i++) {
if (m[i].getReturnType() == cls
&& Modifier.isStatic(m[i].getModifiers())) {
try {
return m[i].invoke(null, new Object[0]);
} catch (Exception e) {}
try {
return m[i].invoke(null, new Object[] { new Integer(0) });
} catch (Exception e) {}
try {
return m[i].invoke(null, new Object[] { new Boolean(false) });
} catch (Exception e) {}
try {
return m[i].invoke(null, new Object[] { "" });
} catch (Exception e) {}
}
}
return null;
}
public static Number cast(Number n, Class destClass) {
if (destClass == Byte.class) {
return new Byte(n.byteValue());
}
if (destClass == Short.class) {
return new Short(n.shortValue());
}
if (destClass == Integer.class) {
return new Integer(n.intValue());
}
if (destClass == Long.class) {
return new Long(n.longValue());
}
if (destClass == Float.class) {
return new Float(n.floatValue());
}
if (destClass == Double.class) {
return new Double(n.doubleValue());
}
return n;
}
public static Object cast(Object obj, Class destClass) {
if (obj == null || destClass == null) {
return obj;
} else if (obj.getClass() == destClass) {
return obj;
} else if (obj instanceof Number) {
return cast((Number) obj, destClass);
} else if ((obj instanceof String) && destClass == Character.class) {
return new Character(((String)obj).charAt(0));
} else if ((obj instanceof ArrayList) && destClass.isArray()) {
return toArray((ArrayList) obj, destClass.getComponentType());
} else if ((obj instanceof ArrayList) && destClass == HashMap.class) {
return toHashMap((ArrayList) obj);
} else {
return obj;
}
}
private static HashMap toHashMap(ArrayList a) {
int n = a.size();
HashMap h = new HashMap(n);
for (int i = 0; i < n; i++) {
h.put(new Integer(i), a.get(i));
}
return h;
}
private static Object toArray(ArrayList obj, Class componentType) {
int n = obj.size();
Object a = Array.newInstance(componentType, n);
for (int i = 0; i < n; i++) {
Array.set(a, i, cast(obj.get(i), componentType));
}
return a;
}
private static int getPos(ByteArrayInputStream stream) {
try {
Field pos = stream.getClass().getDeclaredField("pos");
pos.setAccessible(true);
return pos.getInt(stream);
} catch (Exception e) {
return 0;
}
}
private static void setPos(ByteArrayInputStream stream, int p) {
try {
Field pos = stream.getClass().getDeclaredField("pos");
pos.setAccessible(true);
pos.setInt(stream, p);
} catch (Exception e) {}
}
public static Object unserialize(byte[] ss) throws IllegalAccessException {
return unserialize(ss, null, "UTF-8");
}
public static Object unserialize(byte[] ss, String charset) throws IllegalAccessException {
return unserialize(ss, null, charset);
}
public static Object unserialize(byte[] ss, Class cls) throws IllegalAccessException {
return unserialize(ss, cls, "UTF-8");
}
public static Object unserialize(byte[] ss, Class cls, String charset) throws IllegalAccessException {
int hv = 1;
ByteArrayInputStream stream = new ByteArrayInputStream(ss);
Object result = unserialize(stream, new HashMap(), hv, new HashMap(), charset).value;
try {
stream.close();
} catch (Exception e) {}
return cast(result, cls);
}
private static UnSerializeResult unserialize(ByteArrayInputStream stream, HashMap ht, int hv, HashMap rt, String charset) throwsIllegalAccessException {
Object obj;
switch (stream.read()) {
case __N:
obj = readNull(stream);
ht.put(new Integer(hv++), obj);
return new UnSerializeResult(obj, hv);
case __b:
obj = readBoolean(stream);
ht.put(new Integer(hv++), obj);
return new UnSerializeResult(obj, hv);
case __i:
obj = readInteger(stream);
ht.put(new Integer(hv++), obj);
return new UnSerializeResult(obj, hv);
case __d:
obj = readDouble(stream);
ht.put(new Integer(hv++), obj);
return new UnSerializeResult(obj, hv);
case __s:
obj = readString(stream, charset);
ht.put(new Integer(hv++), obj);
return new UnSerializeResult(obj, hv);
case __U:
obj = readUnicodeString(stream);
ht.put(new Integer(hv++), obj);
return new UnSerializeResult(obj, hv);
case __r:
return readRef(stream, ht, hv, rt);
case __a:
return readArray(stream, ht, hv, rt, charset);
case __O:
return readObject(stream, ht, hv, rt, charset);
case __C:
return readCustomObject(stream, ht, hv, charset);
case __R:
return readPointRef(stream, ht, hv, rt);
default:
return null;
}
}
private static String readNumber(ByteArrayInputStream stream) {
StringBuffer sb = new StringBuffer();
int i = stream.read();
while ((i != __Semicolon) && (i != __Colon)) {
sb.append((char) i);
i = stream.read();
}
return sb.toString();
}
private static Object readNull(ByteArrayInputStream stream) {
stream.skip(1);
return null;
}
private static Boolean readBoolean(ByteArrayInputStream stream) {
stream.skip(1);
Boolean b = new Boolean(stream.read() == __1);
stream.skip(1);
return b;
}
private static Number readInteger(ByteArrayInputStream stream) {
stream.skip(1);
String i = readNumber(stream);
try {
return new Byte(i);
} catch (Exception e1) {
try {
return new Short(i);
} catch (Exception e2) {
return new Integer(i);
}
}
}
private static Number readDouble(ByteArrayInputStream stream) {
stream.skip(1);
String d = readNumber(stream);
if (d.equals(__NAN)) {
return new Double(Double.NaN);
}
if (d.equals(__INF)) {
return new Double(Double.POSITIVE_INFINITY);
}
if (d.equals(__NINF)) {
return new Double(Double.NEGATIVE_INFINITY);
}
try {
return new Long(d);
} catch (Exception e1) {
try {
Float f = new Float(d);
if (f.isInfinite()) {
return new Double(d);
} else {
return f;
}
} catch (Exception e2) {
return new Float(0);
}
}
}
private static String readString(ByteArrayInputStream stream, String charset) {
stream.skip(1);
int len = Integer.parseInt(readNumber(stream));
stream.skip(1);
byte[] buf = new byte[len];
stream.read(buf, 0, len);
String s = getString(buf, charset);
stream.skip(2);
return s;
}
private static String readUnicodeString(ByteArrayInputStream stream) {
stream.skip(1);
int l = Integer.parseInt(readNumber(stream));
stream.skip(1);
StringBuffer sb = new StringBuffer(l);
int c;
for (int i = 0; i < l; i++) {
if ((c = stream.read()) == __Slash) {
char c1 = (char) stream.read();
char c2 = (char) stream.read();
char c3 = (char) stream.read();
char c4 = (char) stream.read();
sb.append(
(char) (Integer.parseInt(
new String(new char[] { c1, c2, c3, c4 }), 16)));
} else {
sb.append((char) c);
}
}
stream.skip(2);
return sb.toString();
}
private static UnSerializeResult readRef(ByteArrayInputStream stream, HashMap ht, int hv, HashMap rt) {
stream.skip(1);
Integer r = new Integer(readNumber(stream));
if (rt.containsKey(r)) {
rt.put(r, new Boolean(true));
}
Object obj = ht.get(r);
ht.put(new Integer(hv++), obj);
return new UnSerializeResult(obj, hv);
}
private static UnSerializeResult readPointRef(ByteArrayInputStream stream, HashMap ht, int hv, HashMap rt) {
stream.skip(1);
Integer r = new Integer(readNumber(stream));
if (rt.containsKey(r)) {
rt.put(r, new Boolean(true));
}
Object obj = ht.get(r);
return new UnSerializeResult(obj, hv);
}
private static UnSerializeResult readArray(ByteArrayInputStream stream, HashMap ht, int hv, HashMap rt, String charset) throwsIllegalAccessException {
stream.skip(1);
int n = Integer.parseInt(readNumber(stream));
stream.skip(1);
HashMap h = new HashMap(n);
ArrayList al = new ArrayList(n);
Integer r = new Integer(hv);
rt.put(r, new Boolean(false));
int p = getPos(stream);
ht.put(new Integer(hv++), h);
for (int i = 0; i < n; i++) {
Object key;
switch (stream.read()) {
case __i:
key = cast(readInteger(stream), Integer.class);
break;
case __s:
key = readString(stream, charset);
break;
case __U:
key = readUnicodeString(stream);
break;
default:
return null;
}
UnSerializeResult result = unserialize(stream, ht, hv, rt, charset);
hv = result.hv;
if (al != null) {
if ((key instanceof Integer) && (((Integer) key).intValue() == i)) {
al.add(result.value);
} else {
al = null;
}
}
h.put(key, result.value);
}
if (al != null) {
ht.put(r, al);
if (((Boolean) (rt.get(r))).booleanValue()) {
hv = r.intValue() + 1;
setPos(stream, p);
for (int i = 0; i < n; i++) {
int key;
switch (stream.read()) {
case __i:
key = ((Integer) cast(readInteger(stream), Integer.class)).intValue();
break;
default:
return null;
}
UnSerializeResult result = unserialize(stream, ht, hv, rt,
charset);
hv = result.hv;
al.set(key, result.value);
}
}
}
rt.remove(r);
stream.skip(1);
return new UnSerializeResult(ht.get(r), hv);
}
private static UnSerializeResult readObject(ByteArrayInputStream stream, HashMap ht, int hv, HashMap rt, String charset) throwsIllegalAccessException {
stream.skip(1);
int len = Integer.parseInt(readNumber(stream));
stream.skip(1);
byte[] buf = new byte[len];
stream.read(buf, 0, len);
String cn = getString(buf, charset);
stream.skip(2);
int n = Integer.parseInt(readNumber(stream));
stream.skip(1);
Class cls = getClass(cn);
Object o;
if (cls != null) {
if ((o = newInstance(cls)) == null) {
o = new HashMap(n);
}
} else {
o = new HashMap(n);
}
ht.put(new Integer(hv++), o);
for (int i = 0; i < n; i++) {
String key;
switch (stream.read()) {
case __s:
key = readString(stream, charset);
break;
case __U:
key = readUnicodeString(stream);
break;
default:
return null;
}
if (key.charAt(0) == (char) 0) {
key = key.substring(key.indexOf("\0", 1) + 1);
}
UnSerializeResult result = unserialize(stream, ht, hv, rt, charset);
hv = result.hv;
if (o instanceof HashMap) {
((HashMap) o).put(key, result.value);
} else {
Field f = getField(o, key);
f.setAccessible(true);
f.set(o, result.value);
}
}
stream.skip(1);
Method __wakeup = null;
try {
__wakeup = o.getClass().getMethod("__wakeup", new Class[0]);
__wakeup.invoke(o, new Object[0]);
} catch (Exception e) {}
return new UnSerializeResult(o, hv);
}
private static UnSerializeResult readCustomObject(ByteArrayInputStream stream, HashMap ht, int hv, String charset) {
stream.skip(1);
int len = Integer.parseInt(readNumber(stream));
stream.skip(1);
byte[] buf = new byte[len];
stream.read(buf, 0, len);
String cn = getString(buf, charset);
stream.skip(2);
int n = Integer.parseInt(readNumber(stream));
stream.skip(1);
Class cls = getClass(cn);
Object o;
if (cls != null) {
o = newInstance(cls);
} else {
o = null;
}
ht.put(new Integer(hv++), o);
if (o == null) {
stream.skip(n);
} else if (o instanceof org.phprpc.util.Serializable) {
byte[] b = new byte[n];
stream.read(b, 0, n);
((org.phprpc.util.Serializable) o).unserialize(b);
} else {
stream.skip(n);
}
stream.skip(1);
return new UnSerializeResult(o, hv);
}
}
/* Serializable.java
*
* Author: Ma Bingyao <andot@ujn.edu.cn>
* Copyright: CoolCode.CN
* Version: 2.1
* LastModified: 2006-08-09
* This library is free. You can redistribute it and/or modify it.
* http://www.coolcode.cn/?p=202
*/
package org.phprpc.util;
interface Serializable {
byte[] serialize();
void unserialize(byte[] ss);
}以上内容摘自：http://coolcode.org/?action=show&id=202
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