java encode和decode怎么使用

?Java?,????????????????????????????????????????????:

1. ??Base64????????:

import java.util.Base64;
String originalString = "Hello, World!";
String encodedString = Base64.getEncoder().encodeToString(originalString.getBytes());
String decodedString = new String(Base64.getDecoder().decode(encodedString));
System.out.println("Encoded string: " + encodedString);
System.out.println("Decoded string: " + decodedString);

????:

Encoded string: SGVsbG8sIFdvcmxkIQ==
Decoded string: Hello, World!

2. ??URL????????:

import java.net.URLEncoder;
import java.net.URLDecoder;
String originalString = "Hello, World!";
String encodedString = URLEncoder.encode(originalString, "UTF-8");
String decodedString = URLDecoder.decode(encodedString, "UTF-8");
System.out.println("Encoded string: " + encodedString);
System.out.println("Decoded string: " + decodedString);

????:

Encoded string: Hello,+World!
Decoded string: Hello, World!

3. ??UTF-8????????:

import java.nio.charset.StandardCharsets;
String originalString = "Hello, World!";
byte[] encodedBytes = originalString.getBytes(StandardCharsets.UTF_8);
String encodedString = new String(encodedBytes, StandardCharsets.UTF_8);
String decodedString = new String(encodedBytes, StandardCharsets.UTF_8);
System.out.println("Encoded string: " + encodedString);
System.out.println("Decoded string: " + decodedString);

????:

Encoded string: Hello, World!
Decoded string: Hello, World!

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