serialization

问题 I have a question regarding POST request with nested objects in Django with serializers: I have checked this: Stackoverflow 1 Django Doc Stackoverflow 2 I've created some serializers in my Django project following the architecture below: EP_project │ │ └───ep_python │ db.sqlite3 │ manage.py │ __init__.py │ ├───ep │ │ admin.py │ │ apps.py │ │ models.py │ │ tests.py │ │ urls.py │ │ __init__.py │ │ │ ├───migrations │ │ │ ├───models │ │ │ model_aa.py │ │ │ model_ap.py │ │ │ model_apr.py │ │ │

问题 I am developing a Web API, where the GET method needs to return an object, whose variables will be decided based on an XML file. The returned format must be either XML or JSON as requested by the client. I want to return the data inside XML file into XML format to the client, and something reasonable for JSON when JSON is requested. The nodes in the XML might increase or decrease and therefore I cannot define a fixed class in the Models . My current solution is to return a dynamic object, but

问题 I am developing a Web API, where the GET method needs to return an object, whose variables will be decided based on an XML file. The returned format must be either XML or JSON as requested by the client. I want to return the data inside XML file into XML format to the client, and something reasonable for JSON when JSON is requested. The nodes in the XML might increase or decrease and therefore I cannot define a fixed class in the Models . My current solution is to return a dynamic object, but

问题 When I create a User defined class "Asset". public class Asset { private UUID id; private String name; } And set an object of this class as a response. @GetMapping("/testSerialization") public Asset testSerialization() { return new Asset() } This controller works successfully. But when the same controller uses Geometry Types the request fails, import com.vividsolutions.jts.geom.Point; // Does not work @GetMapping("/testSerialization") public Point testSerialization() { GeometryFactory

问题 When I create a User defined class "Asset". public class Asset { private UUID id; private String name; } And set an object of this class as a response. @GetMapping("/testSerialization") public Asset testSerialization() { return new Asset() } This controller works successfully. But when the same controller uses Geometry Types the request fails, import com.vividsolutions.jts.geom.Point; // Does not work @GetMapping("/testSerialization") public Point testSerialization() { GeometryFactory

问题 I am writing a custom System.Text.Json.JsonConverter to upgrade an old data model to a new version. I have overridden Read() and implemented the necessary postprocessing. However, I don't need to do anything custom at all in the Write() method. How can I automatically generate the default serialization that I would get if I did not have a converter at all? Obviously I could just use different JsonSerializerOptions for deserialization and serialization, however my framework doesn't provide

问题 In the example of Boost code of serialization bus schedule in its output file "demofile.txt" the first line is: "22 serialization::archive 16 0 0 6 0 0 0 0 0 6 24 4" what is this? Dll version number? Can we suppress this and store only the data itsself? 回答1: That's not a Dll version. It's the archive header. Suppress it by using archive flags it: void save_schedule(const bus_schedule &s, const char * filename){ // make an archive std::ofstream ofs(filename); boost::archive::text_oarchive oa

问题 Stumbled on this behavior when making some experiments with ObjectMapper . See Junit5 test cases below and what those print for me in comments. class TestIt { private ObjectMapper om = new ObjectMapper(); private TestClass testClass = new TestClass(); @Getter @Setter public class TestClass { private final String value = LocalDate.now().toString(); private String valueLeftNull; } @Test void defaultMapping() throws JsonProcessingException { System.out.println(om.writeValueAsString(testClass));

问题 I have a graph i want to store in my DB and retrieve it in another package. My graph signature is: public class ModuleToModuleDependencyGraph extends DependencyGraph<ModuleNode, ModuleToModuleDependency> implements Serializable Signature of classes it extends and use : public class DependencyGraph<V extends Node, E extends DependencyEdge<? extends DependencyData>> extends DefaultDirectedGraph<V, E> implements IDependencyGraph<V, E>, Serializable public class ModuleNode extends Node implements

问题 My Code is configfile = open("abc.txt",'rb').read() return base64.b64encode(configfile) got error "Object of type 'bytes' is not JSON serializable in python3.6" on ec2 回答1: Above issue appeared when i updated Django 1.8 to Django 2.2.6 I solve this by Consider installing and using [simplejson][1], which can handle bytes strings in addition to unicode, to install it use command below: pip3 install simplejson Usage in code: import simplejson as json json.dumps({b'name': b'dev'}) This will solve