Analyze the technical principles in the Java class library: Jackson DataFormat: Smile framework

Jackson DataFormat: Smile framework technical analysis Jackson is a popular Java class library to convert Java objects with JSON data.It provides support for multiple data formats, including JSON, XML, and Smile.Among them, Smile is a binary data format that is supported by Jackson's DataFormat module. The technical principle of the Smile framework is to sequence the Java object into a binary data in the Smile format, and the deeper sequencing into the Java object.Compared with the traditional JSON format, this binary format has smaller data size and faster serialization/derivative speed. Below we will analyze the technical principles of Jackson DataFormat: Smile framework and provide some Java code examples. 1. Introduce dependencies First of all, we need to introduce Jackson and Jackson DataFormat: Smile module in the dependence of the project. <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.dataformat</groupId> <artifactId>jackson-dataformat-smile</artifactId> <version>${jackson.version}</version> </dependency> 2. The serialization object is the binary data of Smile format The following example shows how to sequence the Java object into a binary data in the Smile format. import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.dataformat.smile.SmileFactory; import java.io.ByteArrayOutputStream; public class ObjectSerializer { public static void main(String[] args) throws Exception { // Create ObjectMapper and SmileFactory objects ObjectMapper objectMapper = new ObjectMapper(new SmileFactory()); // Create a serialized Java object MyObject myObject = new MyObject("Hello", "World"); // Binary data of the Java object to SMILE format ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); objectMapper.writeValue(outputStream, myObject); // Output binary data after serialization byte[] smileData = outputStream.toByteArray(); System.out.println("Serialized Smile data: " + new String(smileData)); } } 3. The binary data of the counter -serialization Smile format is the Java object The following example shows how to sequence the binary data of the Smile format into a Java object. import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.dataformat.smile.SmileFactory; import java.io.ByteArrayInputStream; public class ObjectDeserializer { public static void main(String[] args) throws Exception { // Create ObjectMapper and SmileFactory objects ObjectMapper objectMapper = new ObjectMapper(new SmileFactory()); // Create binary data containing Smile format byte[] smileData = getSmileData(); // Sequence the binary data of Smile format into a Java object MyObject myObject = objectMapper.readValue(new ByteArrayInputStream(smileData), MyObject.class); // Output the java object after the output System.out.println("Deserialized object: " + myObject); } } The above example shows the technical principles of Jackson DataFormat: Smile framework: By using ObjectMapper and SmileFactory objects in the Jackson library, we can easily sequence the Java object into the binary data of Smile format and turn its back sequence into the Java object.