serialization

问题 I want to serialize an arraylist of Item but it doesn't work.... my Item class extends Stuff class and has some subclasses . all of my classes implement Serilalizable. i have this part : try{ // Serialize data object to a file ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream("MyData.ser")); out.writeObject(myData); out.close(); // Serialize data object to a byte array ByteArrayOutputStream bos = new ByteArrayOutputStream() ; out = new ObjectOutputStream(bos) ; out

问题 I'm trying to serialize a dictionary of type Dictionary<string, object> to store a series of parameters. The dictionary contains both primitive and complex variable types (such lists). Serialization works as expected however when deserializing the JSON string back to a Dictionary<string, object> , those parameters that are of type List<T> are transformed to a type Dictionary<string, object> . When I try to type cast these parameters, I get an InvalidCastException . using UnityEngine; using

问题 Is there some code out there that lets me serialize all the objects in an MS Access MDB File. All the Objects like Table definitions, Table Data, Query defintions, Report definitions, VB Modules should be written to one or multiple text files. It is not necessary to reverse the operation (but would be nice to have). I want to put the text files to a VCS so I can track changes and document. 回答1: To import/export Access forms, modules or macros from/to text files, use the undocumented

问题 I have code that is modeled as such: class A { private transient Foo foo = new Foo(); private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException { in.defaultReadObject(); foo = new Foo(); } } class B extends A {} I added readObject() to A so that during deserialization, the transient foo will be initialized. However, I stuck breakpoints in my code and could see that XStream is not calling readObject() at all. I also tried sticking readObject() in class B that

问题 I tried it in HZ 3.4 and 3.4.1 but with the same output I`m trying to import dummy data to my Hazelcast cluster, with following function HazelcastInstance cluster = HazelcastClient.newHazelcastClient(this.conf); Map<String, Customer> mapCustomers = cluster.getMap("customers"); System.out.println(mapCustomers.size()); System.out.println("hello world"); for (int customerID = 0; customerID < 2000; customerID++) { Customer p = new Customer(); mapCustomers.put(Integer.toString(customerID), p);

问题 Related: Apache Thrift: Serializing data Hi guys : I am noting that the PHP thrift extensions don't appear to have a TFileTransport class. This leads me to wonder : what is the mechanism for writing a thrift object to a FILE in PHP ? Unfortunately, available documentation is focused on the client/server model for using thrift : but I need to use PHP to serialize binary thrift files on disc, which contain a stream of thrift objects. 回答1: Try extending TPhpStream by overriding: private static

问题 Related: Apache Thrift: Serializing data Hi guys : I am noting that the PHP thrift extensions don't appear to have a TFileTransport class. This leads me to wonder : what is the mechanism for writing a thrift object to a FILE in PHP ? Unfortunately, available documentation is focused on the client/server model for using thrift : but I need to use PHP to serialize binary thrift files on disc, which contain a stream of thrift objects. 回答1: Try extending TPhpStream by overriding: private static

问题 I'm debugging and fixing a complex app, that works with a huge Java object (~250M). I've created this object with another program. Currently I use XStream to load and save this object from the hard drive, but it takes more than a minute to parse it. It slows down the development process. Is JAXB faster? Are there any other ways to load and save this huge thing? 回答1: In that case I would Serialize the data which will make it smaller and faster. You can Externalise key classes to improve the

问题 I'm debugging and fixing a complex app, that works with a huge Java object (~250M). I've created this object with another program. Currently I use XStream to load and save this object from the hard drive, but it takes more than a minute to parse it. It slows down the development process. Is JAXB faster? Are there any other ways to load and save this huge thing? 回答1: In that case I would Serialize the data which will make it smaller and faster. You can Externalise key classes to improve the

问题 Is there some reliable way to find out whether a string variable is just a string or a string representation of a serialized object/array? 回答1: Well, you can tell by looking at the format. When you serialize an array, you get a string that looks like a:1:{i:0;s:3:"foo"} And if you serialize an object, you get: o:7:"myclass":1:{s:3:"foo";s:3:"bar";} . So if you want to test rudimentary, you can do these two regexes: ^a:\d+:{.*?}$ And ^o:\d+:"[a-z0-9_]+":\d+:{.*?}$ for arrays and objects