Java - Url(Encoding, Decoding) Sample Code

필요한 경우

• oauth 인증시 redirect uri
• query 파라미터로 /등 특수문자를 보낼 때

사용불가 캐릭터

• / (forward slash)
• ? (question mark)
• & (ampersand)
• = (equals sign)
• % (percent sign)
• + (plus sign)
• # (hash or pound sign)
• < (less than sign)
• > (greater than sign)
• : (colon)
• , (comma)

Sample Code

URL Encode

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

public class UrlEncoderExample {
  public static void main(String[] args) throws UnsupportedEncodingException {
    String originalString = "urlcodode this string "https://www.tistory.com/redirect";
    String encodedString = URLEncoder.encode(originalString, "UTF-8");
    System.out.println("Original string: " + originalString);
    // https://www.tistory.com/redirect
    System.out.println("URL-encoded string: " + encodedString);
    // https%3A%2F%2Fwww.tistory.com%2Fredirect
  }
}

URL Decode

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;

public class UrlDecoderExample {
  public static void main(String[] args) throws UnsupportedEncodingException {
    String encodedString = "https%3A%2F%2Fwww.tistory.com%2Fredirect";
    String decodedString = URLDecoder.decode(encodedString, "UTF-8");
    System.out.println("URL-encoded string: " + encodedString);
    // https%3A%2F%2Fwww.tistory.com%2Fredirect
    System.out.println("URL-decoded string: " + decodedString);
    // https://www.tistory.com/redirect
  }
}