最近做个项目,?需要用js来进行base64?encode,?然后用perl来base64?decoce.?做完之后,?记录一下.
首先是javascript的base64?encode,?查了下,?要么是用jquery,?要么就是自己定义base64encode的方法.?选择了后者.
<script>?
????var?paraStr?=?"in=1&"+location.href.substring(location.href.indexOf("?")+1);
????paraStr?=?base64Encode(paraStr);
????var?hostUrl?=?'<%?get_host_url?%>';
????var?join?=?'?';
????if(hostUrl.indexOf('?')?!=?-1)?join?=?'&';
????window.top.location?=?hostUrl?+?join?+?'redirect_data='?+?paraStr;
????//?function?uTF8Encode
????function?uTF8Encode(string){
????????string?=?string.replace(/x0dx0a/g,?"x0a");
????????var?output?=?"";
????????for?(var?n?=?0;?n?<?string.length;?n++)?{
????????????var?c?=?string.charCodeAt(n);
????????????if?(c?<?128)?{
????????????????output?+=?String.fromCharCode(c);
????????????}?else?if?((c?>?127)?&&?(c?<?2048))?{
????????????????output?+=?String.fromCharCode((c?>>?6)?|?192);
????????????????output?+=?String.fromCharCode((c?&?63)?|?128);
????????????}?else?{
????????????????output?+=?String.fromCharCode((c?>>?12)?|?224);
????????????????output?+=?String.fromCharCode(((c?>>?6)?&?63)?|?128);
????????????????output?+=?String.fromCharCode((c?&?63)?|?128);
????????????}
????????}
????????return?output;
????}
????//?function?base64Encode
????function?base64Encode(input){
????????var?keyString?=?"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
????????var?output?=?"";
????????var?chr1,?chr2,?chr3,?enc1,?enc2,?enc3,?enc4;
????????var?i?=?0;
????????input?=?uTF8Encode(input);
????????while?(i?<?input.length)?{
????????????chr1?=?input.charCodeAt(i++);
????????????chr2?=?input.charCodeAt(i++);
????????????chr3?=?input.charCodeAt(i++);
????????????enc1?=?chr1?>>?2;
????????????enc2?=?((chr1?&?3)?<<?4)?|?(chr2?>>?4);
????????????enc3?=?((chr2?&?15)?<<?2)?|?(chr3?>>?6);
????????????enc4?=?chr3?&?63;
????????????if?(isNaN(chr2))?{
????????????????enc3?=?enc4?=?64;
????????????}?else?if?(isNaN(chr3))?{
????????????????enc4?=?64;
????????????}
????????????output?=?output?+?keyString.charAt(enc1)?+?keyString.charAt(enc2)?+?keyString.charAt(enc3)?+?keyString.charAt(enc4);
????????}
????????return?output;
????}
</script>
?
其中uTF8Encode和base64Encode?来自jquery插件.??类似的还有base64?decode的两个方法.?
也可参考http://ntt.cc/2008/01/19/base64-encoder-decoder-with-javascript.html,?这里只是没有转utf-8.
?
至于perl的?就简单了,?直接引用模块:
use?MIME::Base64?qw(encode_base64?decode_base64);?
