JS Implementation of the Chinese string UTF-8 Base64 encoding method (make it the same as Java coding), utf-8base64

JS Implementation of the Chinese string UTF-8 Base64 encoding method (make it the same as Java coding), utf-8base64

This example describes how to use JavaScript to encode Chinese strings with UTF-8 in base64. We will share this with you for your reference. The details are as follows:

String to be encoded: "select User name from user"

Use JAVA for encoding. Java program:

String SQL = "select username from user"; String encodeStr = new String (Base64.encode (SQL. getBytes ("UTF-8"); // encode System. out. println (encodeStr );

Get:

c2VsZWN0IOeUqOaIt+WQjSBmcm9tIOeUqOaItw==

Decoding in Java:

sql = new String(Base64.decode(sql.getBytes()), "UTF-8");

Why use getBytes ("UTF-8") in Java code? Because the default encoding is different in Windows and Linux environments, you must specify the encoding to make your program get the same encoding on different platforms.

Although Html and JS encoding are UTF-8, but JS from the page to get the Chinese encoding is UTF-16, so the direct Chinese Base64 encoding will get the wrong result, so we need to first convert from the UTF-16 to UTF-8 and then encode

<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
The above code is obtained from the Internet and the correct result is obtained after splicing. Thanks to our predecessors.
PS: here we recommend several online base64 encoding and decoding tools. I believe they will be used in future development:
BASE64 encoding and decoding tool:
Http://tools.jb51.net/transcoding/base64
Online image conversion BASE64 tool:
Http://tools.jb51.net/transcoding/img2base64