Exploring Jackson DataFormat in the Java library: technical principles of Smile framework

Jackson DataFormat: The Smile framework is a Java class library that is used to serialize the Java object into a data format.Smile (Smile) is a binary efficient data exchange format. It is built based on the JSON format, and has higher compression rates and faster serialization speeds compared to the JSON format.This article will explore the technical principles of Jackson DataFormat: Smile framework and provide Java code examples. First of all, in order to use Jackson DataFormat: Smile framework, we need to add Jackson DataFormat to the project: Smile dependency item.In the Maven project, you can add the following dependencies to the `pom.xml` file: <dependency> <groupId>com.fasterxml.jackson.dataformat</groupId> <artifactId>jackson-dataformat-smile</artifactId> <version>2.13.0</version> </dependency> Once we add this dependency item in the project, we can start using Jackson DataFormat: Smile framework. The data that serializes the Java object into Smile format is very simple.We only need to create an ObjectMapper` object, and pass the serialized Java object to the method of the Java object to the method, and then write the returned byte array to the file or send it to the network.Here are examples of data that serialize the Java object into a Smile format: import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.dataformat.smile.SmileFactory; public class SmileSerializationExample { public static void main(String[] args) throws JsonProcessingException { // Create ObjectMapper and configure SmileFactory ObjectMapper objectMapper = new ObjectMapper(new SmileFactory()); // Create a Java object MyObject myObject = new MyObject("Hello, Smile!", 42); // Serialize Java objects into data in SMILE format byte[] smileData = objectMapper.writeValueAsBytes(myObject); // Write the data in the smile format into the file or send it to the network // ... System.out.println ("Data in Smile format has generated"); } } In the above example, we first created an object of `ObjectMapper` and passed the` SmileFactory` to it.`SmileFactory` is a Jackson class that is responsible for creating data in the Smile format. Then, we created a Java object `myObject`, and use the` `writeValueasbytes` method to serialize it into Smile format data.Finally, we can write data in Smile format into files or send them to the network. The data of the derivative SMILE format is also very simple.We only need to call the `Readvalue` method, and pass the data format data as a byte array to it, and then convert the returned object into the type we need.The following is an example of a data counter -serialized Java object in the Smile format: import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.dataformat.smile.SmileFactory; public class SmileDeserializationExample { public static void main(String[] args) throws JsonProcessingException { // Create ObjectMapper and configure SmileFactory ObjectMapper objectMapper = new ObjectMapper(new SmileFactory()); // Read the data in Smile format byte [] Smiledata = // Read the data format data from files or networks // From SMILE format's data back serving Java object MyObject myObject = objectMapper.readValue(smileData, MyObject.class); // Use the adverse -serialized Java object // ... System.out.println ("Data in the Smile format has serialized"); } } In the above example, we first created an object of `ObjectMapper` and passed the` SmileFactory` to it. Then, we read the data format data from the file or network and pass it to the `Readvalue` method.The `Readvalue` method will return a` myObject` object, we can use it to access the data after the disorded. In summary, Jackson DataFormat: The Smile framework is a very useful Java class library that provides the function of serializing the Java object into a Smile format data and the function of the data back order from the Smile format into a Java object.By using Jackson DataFormat: Smile framework, we can achieve efficient data exchange and transmission.