Analysis of the technical principle of Base64 framework in the Java class library

Base64 is a encoding method for transmitting binary data between different systems.In the Java class library, the Base64 framework provides a technical principles for converting binary data into text data. Technical principle analysis: The principle of Base64 encoding is to convert binary data into a set of printed characters in accordance with certain rules, so that binary data can be easily transmitted or stored as text data.The Base64 framework in the Java class library provides a series of coding and decoding methods to achieve this conversion. Code process: 1. First of all, the binary data to be encoded is required to meet the group requirements in accordance with each 6 bits and add some additional information. 2. Convert each packet to an index value. The index value corresponds to a character concentrated by a base64 character. 3. Connect all the conversion characters to form a coded Base64 string. Decoding process: 1. First of all, you need to split the Base64 string into each character. 2. Convert each character to the corresponding index value. 3. Stir all the index values and re -organize the original binary data in accordance with the rules of each eight bites. Java code example: Here are examples of coding and decoding using the Base64 framework in the Java class library. import java.util.Base64; public class Base64Example { public static void main(String[] args) { String Originaltext = "Hello, World!"; // Code example String encodedText = Base64.getEncoder().encodeToString(originalText.getBytes()); System.out.println("Encoded Text: " + encodedText); // Decoding example byte[] decodedBytes = Base64.getDecoder().decode(encodedText); String decodedText = new String(decodedBytes); System.out.println("Decoded Text: " + decodedText); } } In the above code, the original text is first converted to byte array.Then use the Base64 encoder to encode the byte array as a Base64 string, and print out the coding results.Then use the Base64 decoder to decode the encoded string into byte array, and finally convert the byte array to a string and print out the decoding result. Through the Base64 framework, we can easily perform the base64 encoding and decoding operation in Java to achieve conversion between binary data and text data.This is very useful in many application scenarios, such as network communication and file transmission.