serialization

问题 I have an array of objects and I want to write them in a text file. So that I can later read the objects back in an array. How should I do it? Using Serialization. Deserialization is not working: public static void readdata(){ ObjectInputStream input = null; try { input = new ObjectInputStream(new FileInputStream("myfile.txt")); // getting end of file exception here } catch (FileNotFoundException e1) { e1.printStackTrace(); } catch (IOException e1) { e1.printStackTrace(); } try { array =

问题 I would like to know how can I read a XML file from my desktop and put it into a string? Here is my XML: <smallusers> <user id="1"> <name>John</name> <motto>I am john, who are you?</motto> </user> <user id="2"> <name>Peter</name> <motto>Hello everyone!</motto> </user> </smallusers> <bigusers> <user id="3"> <name>Barry</name> <motto>Earth is awesome</motto> </user> </bigusers> I want to store each user, but still detect if their small or big, is there a way to do this? Before you downrate this

问题 I would like to know how can I read a XML file from my desktop and put it into a string? Here is my XML: <smallusers> <user id="1"> <name>John</name> <motto>I am john, who are you?</motto> </user> <user id="2"> <name>Peter</name> <motto>Hello everyone!</motto> </user> </smallusers> <bigusers> <user id="3"> <name>Barry</name> <motto>Earth is awesome</motto> </user> </bigusers> I want to store each user, but still detect if their small or big, is there a way to do this? Before you downrate this

问题 I'm trying to make sure serializing works for matrices i.e. Armadillo and I'm getting some errors. I made a simple example of a random matrix and am trying to save the content using boost in a binary file, then load it using boost: #include <iostream> #include <fstream> #include <boost/archive/tmpdir.hpp> #include <boost/archive/binary_oarchive.hpp> #include <boost/archive/binary_iarchive.hpp> #include <armadillo> int main() { arma::mat A = arma::randu<arma::mat>(4,5); std::ofstream

问题 I have nested OneToMany relationships. A form has question sections which have question groups that have questions which have possible answers. What I need to achieve is, to ignore those sections or groups or questions or possible answers that are deleted (virtually using $deleted param) Serializing without exclusion or by just excluding property (with expression) works fine. But @JMS\Exclude(if="expression..") on class (not property) is ignored. use JMS\Serializer\Annotation as JMS; /** *

问题 I have nested OneToMany relationships. A form has question sections which have question groups that have questions which have possible answers. What I need to achieve is, to ignore those sections or groups or questions or possible answers that are deleted (virtually using $deleted param) Serializing without exclusion or by just excluding property (with expression) works fine. But @JMS\Exclude(if="expression..") on class (not property) is ignored. use JMS\Serializer\Annotation as JMS; /** *

问题 I have nested OneToMany relationships. A form has question sections which have question groups that have questions which have possible answers. What I need to achieve is, to ignore those sections or groups or questions or possible answers that are deleted (virtually using $deleted param) Serializing without exclusion or by just excluding property (with expression) works fine. But @JMS\Exclude(if="expression..") on class (not property) is ignored. use JMS\Serializer\Annotation as JMS; /** *

问题 I have nested OneToMany relationships. A form has question sections which have question groups that have questions which have possible answers. What I need to achieve is, to ignore those sections or groups or questions or possible answers that are deleted (virtually using $deleted param) Serializing without exclusion or by just excluding property (with expression) works fine. But @JMS\Exclude(if="expression..") on class (not property) is ignored. use JMS\Serializer\Annotation as JMS; /** *

问题 When serializing objects using the Netwonsoft.JSON library, it's possible to specify the output order using JsonPropertyAttribute property Order . However, I would like to also sort alphabetically the properties by default on top of that. 回答1: You can actually control the order by implementing IContractResolver or overriding the DefaultContractResolver's CreateProperties method. Here's an example of my simple implementation of IContractResolver which orders the properties alphabetically:

问题 I have used the Symfony serializer to serialize my Recherche object. In a Recherche object, I have sub objects : Categorie and Lieu . When I deserialize my Recherche object, all the sub objects are transformed in arrays. I would like them to be objects again. This is how I have serialized my object: $encoders = array(new JsonEncoder()); $normalizer = new ObjectNormalizer(); $normalizer->setIgnoredAttributes(array('parent', 'enfants')); $normalizer->setCircularReferenceHandler(function (