1.Controller
1 def show(){ 2 System.err.println("进行转码...."); 3 String des = params.description; 4 Base64Encoder encoder = new Base64Encoder(); 5 def s = des.getBytes("utf-8").encodeBase64().toString(); 6 System.err.println("转码成功....，转换后"+s); 7 [description:s]; 8 }
2.js
1 <script type="text/javascript"> 2 function conversion(){ 3 var des = document.getElementById("des").value; 4 var b = new Base64(); 5 var test =b.encode(des); 6 document.getElementById("show").innerText ="转码后的结果为："+ test; 7 } 8 function Base64() { 9 10 // private property 11 _keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; 12 13 // public method for encoding 14 this.encode = function (input) { 15 var output = ""; 16 var chr1, chr2, chr3, enc1, enc2, enc3, enc4; 17 var i = 0; 18 input = _utf8_encode(input); 19 while (i < input.length) { 20 chr1 = input.charCodeAt(i++); 21 chr2 = input.charCodeAt(i++); 22 chr3 = input.charCodeAt(i++); 23 enc1 = chr1 >> 2; 24 enc2 = ((chr1 & 3) << 4) | (chr2 >> 4); 25 enc3 = ((chr2 & 15) << 2) | (chr3 >> 6); 26 enc4 = chr3 & 63; 27 if (isNaN(chr2)) { 28 enc3 = enc4 = 64; 29 } else if (isNaN(chr3)) { 30 enc4 = 64; 31 } 32 output = output + 33 _keyStr.charAt(enc1) + _keyStr.charAt(enc2) + 34 _keyStr.charAt(enc3) + _keyStr.charAt(enc4); 35 } 36 return output; 37 } 38 39 // public method for decoding 40 this.decode = function (input) { 41 var output = ""; 42 var chr1, chr2, chr3; 43 var enc1, enc2, enc3, enc4; 44 var i = 0; 45 input = input.replace(/[^A-Za-z0-9+/=]/g, ""); 46 while (i < input.length) { 47 enc1 = _keyStr.indexOf(input.charAt(i++)); 48 enc2 = _keyStr.indexOf(input.charAt(i++)); 49 enc3 = _keyStr.indexOf(input.charAt(i++)); 50 enc4 = _keyStr.indexOf(input.charAt(i++)); 51 chr1 = (enc1 << 2) | (enc2 >> 4); 52 chr2 = ((enc2 & 15) << 4) | (enc3 >> 2); 53 chr3 = ((enc3 & 3) << 6) | enc4; 54 output = output + String.fromCharCode(chr1); 55 if (enc3 != 64) { 56 output = output + String.fromCharCode(chr2); 57 } 58 if (enc4 != 64) { 59 output = output + String.fromCharCode(chr3); 60 } 61 } 62 output = _utf8_decode(output); 63 return output; 64 } 65 66 // private method for UTF-8 encoding 67 _utf8_encode = function (string) { 68 string = string.replace(/ /g," "); 69 var utftext = ""; 70 for (var n = 0; n < string.length; n++) { 71 var c = string.charCodeAt(n); 72 if (c < 128) { 73 utftext += String.fromCharCode(c); 74 } else if((c > 127) && (c < 2048)) { 75 utftext += String.fromCharCode((c >> 6) | 192); 76 utftext += String.fromCharCode((c & 63) | 128); 77 } else { 78 utftext += String.fromCharCode((c >> 12) | 224); 79 utftext += String.fromCharCode(((c >> 6) & 63) | 128); 80 utftext += String.fromCharCode((c & 63) | 128); 81 } 82 83 } 84 return utftext; 85 } 86 87 // private method for UTF-8 decoding 88 _utf8_decode = function (utftext) { 89 var string = ""; 90 var i = 0; 91 var c = c1 = c2 = 0; 92 while ( i < utftext.length ) { 93 c = utftext.charCodeAt(i); 94 if (c < 128) { 95 string += String.fromCharCode(c); 96 i++; 97 } else if((c > 191) && (c < 224)) { 98 c2 = utftext.charCodeAt(i+1); 99 string += String.fromCharCode(((c & 31) << 6) | (c2 & 63)); 100 i += 2; 101 } else { 102 c2 = utftext.charCodeAt(i+1); 103 c3 = utftext.charCodeAt(i+2); 104 string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63)); 105 i += 3; 106 } 107 } 108 return string; 109 } 110 } 111 112 </script>
3.gsp：url的意思是提交到EncodeController这个控制器，调用show这个方法
1 <div> 2 <g:form url="[controller:'encode',action:'show']" name="ti"> 3 <g:textArea name="description" id="des"></g:textArea> 4 <input value="encode" type="button" onclick="conversion()"/> 5 <input type="submit" value="提交"/> 6 </g:form> 7 <span id="show"> </span> 8 </div>
注：纯js转成base64是Copy过来的