URL编码/解码工具

URL是什么

URL（统一资源定位符）是用于定位互联网资源的字符串，由协议、域名、路径等组成。由于URL只能包含ASCII字符集，特殊字符和非ASCII字符必须进行编码处理。

什么是URL编码

URL编码（百分比编码）是将特殊字符转换为%后跟两位十六进制数的格式。这是为了在URL中安全传输数据，避免特殊字符引起歧义。例如，空格会被编码为%20或+号。

Python实现URL编码和解码

      
from urllib.parse import quote, unquote

# Encoding
encoded = quote("hello world!@", safe="")
print(encoded)  # hello%20world%21%40

# Decoding
decoded = unquote("hello%20world%21%40")
print(decoded)  # hello world!@
      
    

JavaScript实现URL编码和解码

      
// Encoding
const encoded = encodeURIComponent('hello world!@');
console.log(encoded); // hello%20world%21%40

// Decoding
const decoded = decodeURIComponent('hello%20world%21%40');
console.log(decoded); // hello world!@
      
    

Java实现URL编码和解码

      
import java.net.URLEncoder;
import java.net.URLDecoder;

// Encoding
String encoded = URLEncoder.encode("hello world!@", "UTF-8");
System.out.println(encoded); // hello+world%21%40

// Decoding
String decoded = URLDecoder.decode("hello+world%21%40", "UTF-8");
System.out.println(decoded); // hello world!@