UrlEncode and Urldecoder effects

First, the basic principle

For the URL passed to the background, some of the characters will be encoded, the following is my Baidu to some of the information.

When a form in a Web page is submitted using the Post method, the type of data content is application/x-www-form-urlencoded, which is:

1. The characters "a"-"Z", "a"-"Z", "0"-"9", ".", "-", "*", and "_" are not encoded;

2. Convert the space to a plus sign (+);

3. Convert non-textual content into "%xy" form, XY is a two-bit 16 binary value;

4. Place the & symbol between each name=value pair.

The Urlencoder class contains static methods that convert a string to the application/x-www-form-urlencoded MIME format.

Ii. description

So UrlEncode is to encode the special part of the URL. Urldecoder is the decoding of special parts.

UrlEncode and Urldecoder effects