WordPress 调用百度翻译进行文章别名转换

2019-04-24 1 评 5,802 阅 1 赞

对于 WordPress 的固定链接来说，懒人就直接用 postid，喜欢来点个性的就会用 postname，也就是通过 WordPress 文章别名来手动指定名称，而用传统的拼音或者简写的话有感觉不够有格调，而想要使用英文呢又没学好，黑鸟今天看到了一个很棒的解决方案。

其实 WordPress 有各种针对文章别名的翻译插件，也有相关的代码实现的教程，一般是通过 WordPress 动作钩子在 WordPress 发布或者更新文章的时候才能执行翻译，不能在文章保存文章时候就先翻译出来，造成发布后多次修改固定链接，不利于SEO。

所以以下提供的方法就是利用 js 方式操作，配合百度翻译的API，当填写好文章的标题，保存后单击文章别名后的翻译即可，如果翻译不满意还可以手动二次修改，保存发布一气呵成，堪称完美。以下代码放到主题 functions.php 文件内：

// WordPress 文章别名增加手动点击百度翻译
add_action( 'admin_head-post.php', 'fanly_post_name_to_slug');
add_action( 'admin_head-post-new.php', 'fanly_post_name_to_slug');
function fanly_post_name_to_slug() {
	echo "<script type='text/javascript' src='".get_stylesheet_directory_uri()."/js/md5.js'></script>";
	echo "<script>
    jQuery(document).ready(function(){jQuery('#post_name').after('<span id=\"fanyi\" style=\"cursor:pointer;font-size:12px;font-weight:normal;padding-left:10px\">点击翻译</span>');});
    jQuery(function($){
    $(document).on('click', '#fanyi', function(){
	var appid = 'APP ID';//修改为百度翻译 APP ID
	var key = '密钥';//修改为百度翻译密钥
	var salt = (new Date).getTime();
	var query = $('#title').val();
	var sign = MD5(appid + query + salt +key);
	$.ajax({
		url: 'https://fanyi-api.baidu.com/api/trans/vip/translate',
	    type: 'get',
        dataType: 'jsonp',
        data: { q: query, appid: appid, salt: salt, from: 'zh', to: 'en', sign: sign },
        success: function (data) {
            $('#post_name').val(data.trans_result[0]['dst']);
            console.log(data.trans_result[0]['dst']);
        } 
    });
});
});
</script>";
}

由于 js 代码需要使用到 MD5，所以还需要载入一个 MD5 的 js 文件，然后放在当前主题目录中的 js 目录，并且以 md5.js 命名。
md5.js 文件内容

var MD5=function(string){function RotateLeft(lValue,iShiftBits){return(lValue<<iShiftBits)|(lValue>>>(32-iShiftBits))}function AddUnsigned(lX,lY){var lX4,lY4,lX8,lY8,lResult;lX8=(lX&2147483648);lY8=(lY&2147483648);lX4=(lX&1073741824);lY4=(lY&1073741824);lResult=(lX&1073741823)+(lY&1073741823);if(lX4&lY4){return(lResult^2147483648^lX8^lY8)}if(lX4|lY4){if(lResult&1073741824){return(lResult^3221225472^lX8^lY8)}else{return(lResult^1073741824^lX8^lY8)}}else{return(lResult^lX8^lY8)}}function F(x,y,z){return(x&y)|((~x)&z)}function G(x,y,z){return(x&z)|(y&(~z))}function H(x,y,z){return(x^y^z)}function I(x,y,z){return(y^(x|(~z)))}function FF(a,b,c,d,x,s,ac){a=AddUnsigned(a,AddUnsigned(AddUnsigned(F(b,c,d),x),ac));return AddUnsigned(RotateLeft(a,s),b)}function GG(a,b,c,d,x,s,ac){a=AddUnsigned(a,AddUnsigned(AddUnsigned(G(b,c,d),x),ac));return AddUnsigned(RotateLeft(a,s),b)}function HH(a,b,c,d,x,s,ac){a=AddUnsigned(a,AddUnsigned(AddUnsigned(H(b,c,d),x),ac));return AddUnsigned(RotateLeft(a,s),b)}function II(a,b,c,d,x,s,ac){a=AddUnsigned(a,AddUnsigned(AddUnsigned(I(b,c,d),x),ac));return AddUnsigned(RotateLeft(a,s),b)}function ConvertToWordArray(string){var lWordCount;var lMessageLength=string.length;var lNumberOfWords_temp1=lMessageLength+8;var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1%64))/64;var lNumberOfWords=(lNumberOfWords_temp2+1)*16;var lWordArray=Array(lNumberOfWords-1);var lBytePosition=0;var lByteCount=0;while(lByteCount<lMessageLength){lWordCount=(lByteCount-(lByteCount%4))/4;lBytePosition=(lByteCount%4)*8;lWordArray[lWordCount]=(lWordArray[lWordCount]|(string.charCodeAt(lByteCount)<<lBytePosition));lByteCount++}lWordCount=(lByteCount-(lByteCount%4))/4;lBytePosition=(lByteCount%4)*8;lWordArray[lWordCount]=lWordArray[lWordCount]|(128<<lBytePosition);lWordArray[lNumberOfWords-2]=lMessageLength<<3;lWordArray[lNumberOfWords-1]=lMessageLength>>>29;return lWordArray}function WordToHex(lValue){var WordToHexValue="",WordToHexValue_temp="",lByte,lCount;for(lCount=0;lCount<=3;lCount++){lByte=(lValue>>>(lCount*8))&255;WordToHexValue_temp="0"+lByte.toString(16);WordToHexValue=WordToHexValue+WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2)}return WordToHexValue}function Utf8Encode(string){string=string.replace(/\r\n/g,"\n");var utftext="";for(var n=0;n<string.length;n++){var c=string.charCodeAt(n);if(c<128){utftext+=String.fromCharCode(c)}else{if((c>127)&&(c<2048)){utftext+=String.fromCharCode((c>>6)|192);utftext+=String.fromCharCode((c&63)|128)}else{utftext+=String.fromCharCode((c>>12)|224);utftext+=String.fromCharCode(((c>>6)&63)|128);utftext+=String.fromCharCode((c&63)|128)}}}return utftext}var x=Array();var k,AA,BB,CC,DD,a,b,c,d;var S11=7,S12=12,S13=17,S14=22;var S21=5,S22=9,S23=14,S24=20;var S31=4,S32=11,S33=16,S34=23;var S41=6,S42=10,S43=15,S44=21;string=Utf8Encode(string);x=ConvertToWordArray(string);a=1732584193;b=4023233417;c=2562383102;d=271733878;for(k=0;k<x.length;k+=16){AA=a;BB=b;CC=c;DD=d;a=FF(a,b,c,d,x[k+0],S11,3614090360);d=FF(d,a,b,c,x[k+1],S12,3905402710);c=FF(c,d,a,b,x[k+2],S13,606105819);b=FF(b,c,d,a,x[k+3],S14,3250441966);a=FF(a,b,c,d,x[k+4],S11,4118548399);d=FF(d,a,b,c,x[k+5],S12,1200080426);c=FF(c,d,a,b,x[k+6],S13,2821735955);b=FF(b,c,d,a,x[k+7],S14,4249261313);a=FF(a,b,c,d,x[k+8],S11,1770035416);d=FF(d,a,b,c,x[k+9],S12,2336552879);c=FF(c,d,a,b,x[k+10],S13,4294925233);b=FF(b,c,d,a,x[k+11],S14,2304563134);a=FF(a,b,c,d,x[k+12],S11,1804603682);d=FF(d,a,b,c,x[k+13],S12,4254626195);c=FF(c,d,a,b,x[k+14],S13,2792965006);b=FF(b,c,d,a,x[k+15],S14,1236535329);a=GG(a,b,c,d,x[k+1],S21,4129170786);d=GG(d,a,b,c,x[k+6],S22,3225465664);c=GG(c,d,a,b,x[k+11],S23,643717713);b=GG(b,c,d,a,x[k+0],S24,3921069994);a=GG(a,b,c,d,x[k+5],S21,3593408605);d=GG(d,a,b,c,x[k+10],S22,38016083);c=GG(c,d,a,b,x[k+15],S23,3634488961);b=GG(b,c,d,a,x[k+4],S24,3889429448);a=GG(a,b,c,d,x[k+9],S21,568446438);d=GG(d,a,b,c,x[k+14],S22,3275163606);c=GG(c,d,a,b,x[k+3],S23,4107603335);b=GG(b,c,d,a,x[k+8],S24,1163531501);a=GG(a,b,c,d,x[k+13],S21,2850285829);d=GG(d,a,b,c,x[k+2],S22,4243563512);c=GG(c,d,a,b,x[k+7],S23,1735328473);b=GG(b,c,d,a,x[k+12],S24,2368359562);a=HH(a,b,c,d,x[k+5],S31,4294588738);d=HH(d,a,b,c,x[k+8],S32,2272392833);c=HH(c,d,a,b,x[k+11],S33,1839030562);b=HH(b,c,d,a,x[k+14],S34,4259657740);a=HH(a,b,c,d,x[k+1],S31,2763975236);d=HH(d,a,b,c,x[k+4],S32,1272893353);c=HH(c,d,a,b,x[k+7],S33,4139469664);b=HH(b,c,d,a,x[k+10],S34,3200236656);a=HH(a,b,c,d,x[k+13],S31,681279174);d=HH(d,a,b,c,x[k+0],S32,3936430074);c=HH(c,d,a,b,x[k+3],S33,3572445317);b=HH(b,c,d,a,x[k+6],S34,76029189);a=HH(a,b,c,d,x[k+9],S31,3654602809);d=HH(d,a,b,c,x[k+12],S32,3873151461);c=HH(c,d,a,b,x[k+15],S33,530742520);b=HH(b,c,d,a,x[k+2],S34,3299628645);a=II(a,b,c,d,x[k+0],S41,4096336452);d=II(d,a,b,c,x[k+7],S42,1126891415);c=II(c,d,a,b,x[k+14],S43,2878612391);b=II(b,c,d,a,x[k+5],S44,4237533241);a=II(a,b,c,d,x[k+12],S41,1700485571);d=II(d,a,b,c,x[k+3],S42,2399980690);c=II(c,d,a,b,x[k+10],S43,4293915773);b=II(b,c,d,a,x[k+1],S44,2240044497);
a=II(a,b,c,d,x[k+8],S41,1873313359);d=II(d,a,b,c,x[k+15],S42,4264355552);c=II(c,d,a,b,x[k+6],S43,2734768916);b=II(b,c,d,a,x[k+13],S44,1309151649);a=II(a,b,c,d,x[k+4],S41,4149444226);d=II(d,a,b,c,x[k+11],S42,3174756917);c=II(c,d,a,b,x[k+2],S43,718787259);b=II(b,c,d,a,x[k+9],S44,3951481745);a=AddUnsigned(a,AA);b=AddUnsigned(b,BB);c=AddUnsigned(c,CC);d=AddUnsigned(d,DD)}var temp=WordToHex(a)+WordToHex(b)+WordToHex(c)+WordToHex(d);return temp.toLowerCase()};

你可以直接复制保存一下。或者直接去百度翻译接口的文档页面：http://api.fanyi.baidu.com/api/trans/product/apidoc 下载 JS 版，然后将里面的文件直接拷贝出来即可。A