Merge pull request mouredev#2444 from ASJordi/main

#12 - Java

Author: Roswell468

Roadmap/12 - JSON Y XML/java/asjordi.java

@@ -0,0 +1,86 @@
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.dataformat.xml.XmlMapper;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+
+import java.io.File;
+import java.io.IOException;
+import java.time.LocalDate;
+import java.util.List;
+
+public class Main {
+
+    public static void main(String[] args) throws IOException {
+        crearJson();
+        leerJson();
+        crearXml();
+        leerXml();
+    }
+
+    record Pojo(String nombre, Integer edad, LocalDate fechaNacimiento, List<String> lenguajes) {}
+
+    static void crearJson() {
+        Pojo pojo = new Pojo("Jordi", 25, LocalDate.of(1995, 8, 1), List.of("Java", "Kotlin", "Scala"));
+
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.registerModule(new JavaTimeModule());
+
+        try {
+            mapper.writeValue(new File("pojo.json"), pojo);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    static void leerJson() {
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.registerModule(new JavaTimeModule());
+        File jsonFile = new File("pojo.json");
+
+        try {
+            var pojo = mapper.readValue(jsonFile, Pojo.class);
+            System.out.println(pojo);
+            jsonFile.delete();
+            System.out.println("Fichero eliminado");
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    static void crearXml() {
+        Pojo pojo = new Pojo("Jordi", 25, LocalDate.of(1995, 8, 1), List.of("Java", "Kotlin", "Scala"));
+        ObjectMapper xmlMapper = new XmlMapper();
+        xmlMapper.registerModule(new JavaTimeModule());
+        xmlMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+
+        try {
+            xmlMapper.writeValue(new File("pojo.xml"), pojo);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    static void leerXml() {
+        ObjectMapper xmlMapper = new XmlMapper();
+        xmlMapper.registerModule(new JavaTimeModule());
+        File xmlFile = new File("pojo.xml");
+
+        try {
+            var pojo = xmlMapper.readValue(xmlFile, Pojo.class);
+            System.out.println(pojo);
+            xmlFile.delete();
+            System.out.println("Fichero eliminado");
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * Maven dependencies:
+     * jackson-databind
+     * jackson-datatype-jsr310
+     * jackson-dataformat-xml
+     */
+
+}