hessian参数序列化过程
hessian协议在调用api的时候会对参数进行序列化：AbstractHessianOutput out = hessianClient.getHessianOutput(os);out.call(methodName, args);out.flush(); 在out.call(methodName,args)的过程中hessian对args进行了序列化：
//com.caucho.hessian.io.HessianOutputpublic void call(String method, Object []args) throws IOException{ startCall(method); if (args != null) { for (int i = 0; i < args.length; i++) writeObject(args); } completeCall();}/*** 调用序列化器对参数进行序列化*/public void writeObject(Object object) throws IOException{ if (object == null) { writeNull(); return; } Serializer serializer; serializer = _serializerFactory.getSerializer(object.getClass()); serializer.writeObject(object, this);}
hessian的序列化器工厂类：com.caucho.hessian.io.SerializerFactory
public Serializer getSerializer(Class cl) throws HessianProtocolException{ Serializer serializer; serializer = (Serializer) _staticSerializerMap.get(cl); if (serializer != null) return serializer; if (_cachedSerializerMap != null) { synchronized (_cachedSerializerMap) {serializer = (Serializer) _cachedSerializerMap.get(cl); } if (serializer != null)return serializer; } for (int i = 0; serializer == null && _factories != null && i < _factories.size(); i++) { AbstractSerializerFactory factory; factory = (AbstractSerializerFactory) _factories.get(i); serializer = factory.getSerializer(cl); } if (serializer != null) { } else if (JavaSerializer.getWriteReplace(cl) != null) serializer = new JavaSerializer(cl); else if (HessianRemoteObject.class.isAssignableFrom(cl)) serializer = new RemoteSerializer(); else if (BurlapRemoteObject.class.isAssignableFrom(cl)) serializer = new RemoteSerializer(); else if (Map.class.isAssignableFrom(cl)) { if (_mapSerializer == null)_mapSerializer = new MapSerializer(); serializer = _mapSerializer; } else if (Collection.class.isAssignableFrom(cl)) { if (_collectionSerializer == null) {_collectionSerializer = new CollectionSerializer(); } serializer = _collectionSerializer; } else if (cl.isArray()) serializer = new ArraySerializer(); else if (Throwable.class.isAssignableFrom(cl)) serializer = new ThrowableSerializer(cl); else if (InputStream.class.isAssignableFrom(cl)) serializer = new InputStreamSerializer(); else if (Iterator.class.isAssignableFrom(cl)) serializer = IteratorSerializer.create(); else if (Enumeration.class.isAssignableFrom(cl)) serializer = EnumerationSerializer.create(); else if (Calendar.class.isAssignableFrom(cl)) serializer = CalendarSerializer.create(); else if (Locale.class.isAssignableFrom(cl)) serializer = LocaleSerializer.create(); else if (Enum.class.isAssignableFrom(cl)) serializer = new EnumSerializer(cl); if (serializer == null) serializer = getDefaultSerializer(cl); if (_cachedSerializerMap == null) _cachedSerializerMap = new HashMap(8); synchronized (_cachedSerializerMap) { _cachedSerializerMap.put(cl, serializer); } return serializer;} 从这里大家可以看到Hessain支持的参数类型，如果不支持就会抛出：
Hessian exception:Serialized class #classFullName# must implement java.io.Serializable
页:
[1]