JBundle Thin Base Utilities Base64 Base64 Code Framework in the Java Library Analysis Principles

JBundle Thin Base Utilities is a framework implemented in the Java library to provide some basic tool functions, including Base64 encoding/decoding function.This article will explore the implementation principles of Base64 in Jbundle Thin Base Utilities and explain its usage through the Java code example. ## Base64 Introduction Base64 is a encoding method used to convert binary data into printed characters.It can encode any byte sequence into a string composed of 64 different printed characters, and at the same time, the encoded string can be decoded to the original byte sequence. The purpose of the base64 encoding is to convert binary data into text data when transmitting or stored data to ensure the reliability and readability of the data.Common application scenarios include embedded pictures or files into HTML, CSS, or XML in text forms, and transmit binary data in network communication. ## jbundle Thin Base64 Implementation principle The principle of Base64 in JBundle Thin Base64 is relatively simple, mainly divided into two steps: coding and decoding. ### encoding Coding is a process of converting binary data into Base64 string.JBundle Thin Base64 uses the following steps to encode: 1. Divide the input bytes into a group of 3 bytes, and use 8 digits in each group to represent. 2. Stimulate the data of each group of 3 bytes into a 24 -bit integer. 3. Divide this integer into four groups according to 6 digits. 4. Convert each 6 -bit group value to the corresponding base64 character. 5. If the input byte is not a multiples of 3, add one or two filling characters at the end of the encoding "=". The following is an example of JBundle Thin Base64 in the Java class library: import java.util.Base64; public class Base64Encoder { public static void main(String[] args) { String originalString = "Hello, Base64!"; String encodedString = Base64.getEncoder().encodeToString(originalString.getBytes()); System.out.println("Encoded string: " + encodedString); } } Run the above code, you will get the coded string: "SGVSBG8SIEJHC2U2NA ==" ### decoding Decoding is a process of converting the Base64 string into the original binary data.JBundle Thin Base64 uses the following steps to decoding: 1. Divide the input Base64 string into a group of 4 characters, and each character is represented by 6 digits. 2. Spin the data of each group of 4 characters into a 24 -bit integer. 3. Divide this integer into 3 bytes according to 8 digits. 4. Convert the value of each byte to the corresponding binary data. 5. If there is a filled character at the end of the decoding byte array at the end of the array, you need to remove it. The following is a decoding example of JBundle Thin Base64 in the Java class library: import java.util.Base64; public class Base64Decoder { public static void main(String[] args) { String encodedString = "SGVsbG8sIEJhc2U2NA=="; byte[] decodedBytes = Base64.getDecoder().decode(encodedString); String decodedString = new String(decodedBytes); System.out.println("Decoded string: " + decodedString); } } Run the above code, you will get the decoded string: "Hello, base64!" ## in conclusion JBundle Thin Base64 provides easy -to -use Base64 encoding and decoding functions, and its implementation principle in the Java class library is relatively simple and clear.By analyzing the principles of Base64 coding and decoding, you can better understand and use the practice of JBundle Thin Base64 framework in Java development.