How to use Jackson DataFormat: Smile framework in the Java library for data serialization
How to use Jackson DataFormat: Smile framework in the Java library for data serialization
Title: Use Jackson DataFormat: Smile framework to serialize data in the Java library
Summary: In Java development, the serialization of data is a common demand.Jackson DataFormat: Smile framework provides a fast, efficient and compact data serialization method.This article will introduce how to use the Jackson DataFormat: Smile framework in the Java library for data serialization, including the introduction and basic usage of the framework.
introduction:
In most Java applications, data serialization is a common task.Data serialization is usually used to transmit data between different systems, or durates the data into the storage medium.Jackson DataFormat: Smile is a binary data serialization framework based on the Jackson library. It can serialize the Java object to binary data in Smile format. At the same time, the binary data of the Smile format can be serialized into the Java object.
This article will introduce how to use the Jackson DataFormat: Smile framework in the Java library for data serialization, and some commonly used example examples.
Step 1: Introduce Jackson DataFormat: Smile framework
First, we want to introduce Jackson DataFormat: Smile framework in the Java project.You can add dependencies through building tools such as Maven or Gradle.
Maven dependencies:
<dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-smile</artifactId>
<version>2.12.4</version>
</dependency>
Gradle dependencies:
implementation 'com.fasterxml.jackson.dataformat:jackson-dataformat-smile:2.12.4'
Step 2: Data serialization
Once we successfully introduced the Jackson DataFormat: Smile framework, we can start using it for data serialization.The following is a simple example that shows how to sequence the Java object into binary data in Smile format.
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.smile.databind.SmileMapper;
import java.io.File;
import java.io.IOException;
public class SerializeExample {
public static void main(String[] args) {
// Create a serialized Java object
Person Person = New Person ("Zhang San", 25);
// Create an ObjectMapper instance
ObjectMapper objectMapper = new SmileMapper();
try {
// The binary data of the serialization Java object is Smile format
byte[] smileData = objectMapper.writeValueAsBytes(person);
// Write the binary data into the file
objectMapper.writeValue(new File("person.smile"), person);
} catch (IOException e) {
e.printStackTrace();
}
}
}
In the above example, we first created a serialized Java object (Person), and then created an ObjectMapper instance (SmileMapper).By calling ObjectMapper WriteValueasBytes method, we sequence the Java object into a binary data in Smile format.Then, we can write the binary data into the file for subsequent use.
Step 3: Data degradation
In addition to serialization, the Jackson DataFormat: Smile framework also provides a back -sequential function.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.databind.SmileMapper;
import java.io.File;
import java.io.IOException;
public class DeserializeExample {
public static void main(String[] args) {
// Create an ObjectMapper instance
ObjectMapper objectMapper = new SmileMapper();
try {
// Read the binary data of Smile format from the file
Person person = objectMapper.readValue(new File("person.smile"), Person.class);
// Print the Java object after the printed back -sequentialization
System.out.println(person);
} catch (IOException e) {
e.printStackTrace();
}
}
}
In the above example, we first created an ObjectMapper instance (SmileMapper).Then, by calling ObjectMapper's readvalue method, we read the binary data of the Smile format from the file, and turn its back -sequence to the Java object.Finally, we printed the dependent -serialized Java object.
in conclusion:
This article introduces how to serialize the data of Jackson DataFormat: Smile in the Java library for data serialization.We have learned the steps to introduce Jackson DataFormat: Smile framework, and show the examples of data serialization and derivativeization.Using Jackson DataFormat: Smile framework can make data serialization more efficient and occupy less storage space.I hope this article can help you better apply data serialization technology in Java development.
