Interpret the technical principle of Jackson DataFormat in the Java library: the technical principle of the Smile framework

Jackson DataFormat: Smile is a data formatting framework in the Java class library. It provides an efficient binary data encoding method that is suitable for serialization and derivativeization of data in Java applications.This article will interpret the technical principles of Jackson DataFormat: Smile framework and provide Java code examples. ## 1 Introduction In traditional text -based data formatting methods, such as JSON and XML, data are expressed as readable text forms.However, using text formats to indicate that data generates large overhead during storage and transmission, especially when processing large -scale data sets.The Jackson DataFormat: Smile framework can encode and decoding data in an efficient binary format by using the Smile binary protocol, thereby improving the processing efficiency of data processing. ## 2. Technical principle Jackson DataFormat: The technical principles of the Smile framework mainly include the following aspects: ### 2.1 Smile binary protocol Smile is a binary data format protocol that uses more compact binary codes to represent and store data.Unlike text -based formats, SMILE encoding can reduce the expenses of data during storage and transmission.Jackson DataFormat: The Smile framework uses the Smile binary protocol to serialize and deactivate the Java object. ### 2.2 serialization and desertation Jackson DataFormat: The Smile framework sequences the Java object into the binary data of Smile by using the Java reflex mechanism, and the binary data of the Smile format is transformed into a Java object. During the serialization process, Jackson DataFormat: Smile framework traverses the attributes of the Java object and codec the value of the attribute into the binary data of the Smile format.The framework is then written into the output stream. In the process of deepertization, the framework will read the binary data of Smile format from the input stream and decodes it as a Java object.The framework is used to create a Java object and set the value of decoding from the binary data to the corresponding attributes of the Java object. ### 2.3 Java code example Below is Jackson DataFormat: Smile framework for serialization and derivative Java code example: #### 2.3.1 serialized Java object is binary data in Smile format ObjectMapper objectMapper = new ObjectMapper(new SmileFactory()); // Create a Java object User user = new user ("Zhang San", 25); // The binary data of the serialization Java object is Smile format byte[] data = objectMapper.writeValueAsBytes(user); #### 2.3.2 The binary data of the Smile format is transformed into a Java object ObjectMapper objectMapper = new ObjectMapper(new SmileFactory()); // Sequence the binary data of Smile format into a Java object User user = objectMapper.readValue(data, User.class); ## 3. Summary Jackson DataFormat: The Smile framework provides an efficient data formatting method by using the Smile binary protocol.It can serialize the Java object into binary data in Smile format and sequence the binary data of the Smile format into a Java object.By using Jackson DataFormat: Smile framework, we can process data more efficiently in Java applications.