In -depth understanding of the technical principles of Jackson DataFormat: Smile framework

Jackson DataFormat: Smile is a data formatting library for the Java class library. It makes the serialization and deviceization process of the Java object more efficient and excellent.This article will explore the technical principles of Jackson DataFormat: Smile framework and provide relevant Java code examples. 1 Introduction Jackson DataFormat: Smile is part of the Jackson DataFormat series library, which provides a function that converts Java objects into Smile format.Smile is a binary JSON form. It has the same syntax and data structure as JSON, but uses binary encoding to make data transmission more efficient. 2. Technical principles Jackson DataFormat: The core technical principles of Smile can be divided into three aspects: object serialization, object derivativeization, and binary coding. 2.1 Object serialization The process of using Jackson DataFormat: Smile serialize the Java object is very simple.First of all, we need to create an ObjectMapper object, which is responsible for converting the Java object into Smile format.We can then call the objects to sequence the object to the Smile format of the binary form by calling the WriteValueasbytes method of ObjectMapper.The following is an example: ObjectMapper smileMapper = new ObjectMapper(new SmileFactory()); MyObject myObject = new MyObject("example", 123); byte[] smileData = smileMapper.writeValueAsBytes(myObject); 2.2 Object Capitalization The process of the object's back -sequentialization is the opposite of the object serialization process.We also need to create an ObjectMapper object, and convert the binary data of the Smile format back to the Java object by calling its Readvalue method.The following is an example code: ObjectMapper smileMapper = new ObjectMapper(new SmileFactory()); MyObject myObject = smileMapper.readValue(smileData, MyObject.class); 2.3 Binary Code The Smile format uses a compact binary encoding method, so that data occupies less space.It uses some optimization technologies, such as variable length integrated coding (Varint), shared dictionary and reference processing.These technologies can significantly reduce the size of the data and improve the efficiency of data transmission. 3. Application scenario Jackson DataFormat: Smile framework can play a great role in many scenes.The main application scenarios include: 3.1 Efficient data transmission The Smile format uses binary coding. Compared with the traditional text format (such as JSON), it can reduce the amount of transmission data and improve the efficiency of network transmission. It is especially suitable for a network transmission environment with limited bandwidth. 3.2 High -performance storage Storage data in SMILE format in a disk or database can reduce the occupation of storage space and improve the performance of read and write operations. 3.3 Multi -language data interaction Smile format is a general data exchange format. Because it has the same syntax and data structure as JSON, it can easily interact between different programming languages. 4. Summary Jackson DataFormat: Smile is an efficient Java library that provides developers with the ability to sequence the Java object into Smile format.By using Jackson DataFormat: Smile, we can play a greater role in efficient, excellent and cross -language data interaction.