The principle of the principle of JBUNDLE THIN BASE Utilities Base64 Base64 Code framework sharing
The principle of the principle of JBUNDLE THIN BASE Utilities Base64 Base64 Code framework sharing
Summary:
JBundle Thin Base Utilities Base64 Code is a framework in the Java class library that is used for the Base64 encoding and decoding of the string.This article will introduce the principles and application cases of the framework, as well as some Java code examples.
1. Framework principle:
Base64 is a encoding method for encoding binary data into ASCII characters.JBundle Thin Base Utilities Base64 Code framework implements coding and decoding through the following steps:
Step 1: Each group of the input byte array is divided into several groups.
Step 2: Base64 encoding each group.
Step 3: Connect the coded results to form the final base64 string.
The decoding process is opposite to the encoding process. It decodes the Base64 string into the original binary data.
2. Application case:
JBundle Thin Base Utilities Base64 Code framework can be used in many fields and scenes, such as::
Case 1: File upload and download
In web applications, you can use Base64 encoding to convert files into string and transmit it on the network.The receiving terminal can use the same base64 decoding to convert the string back to the original file.
Example code:
import java.io.File;
import java.nio.file.Files;
import java.util.Base64;
public class FileUploader {
public static String encodeFileToBase64(File file) throws Exception {
byte[] fileContents = Files.readAllBytes(file.toPath());
return Base64.getEncoder().encodeToString(fileContents);
}
public static void decodeBase64ToFile(String base64String, File outputFile) throws Exception {
byte[] decodedBytes = Base64.getDecoder().decode(base64String);
Files.write(outputFile.toPath(), decodedBytes);
}
}
Case 2: encryption and decryption
In the field of security, you can use Base64 to encrypt the sensitive data, and use the same base64 decoding to restore the data.
Example code:
import java.nio.charset.StandardCharsets;
import java.util.Base64;
public class EncryptionUtils {
public static String encrypt(String plainText) {
byte[] cipherBytes = Base64.getEncoder().encode(plainText.getBytes(StandardCharsets.UTF_8));
return new String(cipherBytes, StandardCharsets.UTF_8);
}
public static String decrypt(String cipherText) {
byte[] plainBytes = Base64.getDecoder().decode(cipherText.getBytes(StandardCharsets.UTF_8));
return new String(plainBytes, StandardCharsets.UTF_8);
}
}
3. Summary:
JBundle Thin Base Utilities Base64 Code framework provides a simple and effective way to perform Base64 encoding and decoding.We can use this framework to process files such as uploading and downloading, data encryption and decryption.It is hoped that the principle analysis and code examples provided in this article can help readers better understand and apply the framework.
