使用jquery.qrcode.min.js实现中文转化二维码
今天还是要讲一下关于二维码的知识，前几篇讲解中有讲到我使用的可以生成二维码的js是qrcode.js，然后结合Cordovad的插件$cordovaBarcodeScanner插件可以扫描二维码，这样就基本完成了简单的扫一扫功能。后来在项目进行，开始要调用后台数据和传参数到接口的时候发现qrcode.js它只能解析英文或者数字，并且只能解析一个字符串！
而我所需要的是将一个对象转化成二维码，然后在扫描的时候取出对象中的数据，显然qrcode.js不能实现，经过查找，找到另一个jquery.qrcode.min.js(支持中文转化二维码).
下面让我来介绍一下具体的步骤和代码实现吧！
一、这是我找到的jquery.qrcode.min.js(支持中文转化二维码)代码，需要引入到你的项目里去：
/**
*Createdbyncloudon16/3/8.
*/
//jquery.qrcode.min.js
(function(r){
r.fn.qrcode=function(h){
vars;functionu(a){this.mode=s;this.data=a}functiono(a,c){this.typeNumber=a;this.errorCorrectLevel=c;this.modules=null;this.moduleCount=0;this.dataCache=null;this.dataList=[]}functionq(a,c){if(void0==a.length)throwError(a.length+"/"+c);for(vard=0;d<a.length&&0==a[d];)d++;this.num=Array(a.length-d+c);for(varb=0;b<a.length-d;b++)this.num[b]=a[b+d]}functionp(a,c){this.totalCount=a;this.dataCount=c}functiont(){this.buffer=[];this.length=0}u.prototype={getLength:function(){returnthis.data.length},
write:function(a){for(varc=0;c<this.data.length;c++)a.put(this.data.charCodeAt(c),8)}
};o.prototype={addData:function(a){this.dataList.push(newu(a));this.dataCache=null},isDark:function(a,c){if(0>a||this.moduleCount<=a||0>c||this.moduleCount<=c)throwError(a+","+c);returnthis.modules[a][c]},getModuleCount:function(){returnthis.moduleCount},make:function(){
if(1>this.typeNumber){
for(vara=1,a=1;40>a;a++){
for(varc=p.getRSBlocks(a,this.errorCorrectLevel),d=newt,b=0,e=0;e<c.length;e++)b+=c[e].dataCount;
for(e=0;e<this.dataList.length;e++)c=this.dataList[e],d.put(c.mode,4),d.put(c.getLength(),j.getLengthInBits(c.mode,a)),c.write(d);if(d.getLengthInBits()<=8*b)break
}this.typeNumber=a
}this.makeImpl(!1,this.getBestMaskPattern())
},makeImpl:function(a,c){
this.moduleCount=4*this.typeNumber+17;this.modules=Array(this.moduleCount);for(vard=0;d<this.moduleCount;d++){this.modules[d]=Array(this.moduleCount);for(varb=0;b<this.moduleCount;b++)this.modules[d][b]=null}this.setupPositionProbePattern(0,0);this.setupPositionProbePattern(this.moduleCount-
7,0);this.setupPositionProbePattern(0,this.moduleCount-7);this.setupPositionAdjustPattern();this.setupTimingPattern();this.setupTypeInfo(a,c);7<=this.typeNumber&&this.setupTypeNumber(a);null==this.dataCache&&(this.dataCache=o.createData(this.typeNumber,this.errorCorrectLevel,this.dataList));this.mapData(this.dataCache,c)
},setupPositionProbePattern:function(a,c){
for(vard=-1;7>=d;d++)if(!(-1>=a+d||this.moduleCount<=a+d))for(varb=-1;7>=b;b++)-1>=c+b||this.moduleCount<=c+b||(this.modules[a+d][c+b]=
0<=d&&6>=d&&(0==b||6==b)||0<=b&&6>=b&&(0==d||6==d)||2<=d&&4>=d&&2<=b&&4>=b?!0:!1)
},getBestMaskPattern:function(){for(vara=0,c=0,d=0;8>d;d++){this.makeImpl(!0,d);varb=j.getLostPoint(this);if(0==d||a>b)a=b,c=d}returnc},createMovieClip:function(a,c,d){a=a.createEmptyMovieClip(c,d);this.make();for(c=0;c<this.modules.length;c++)for(vard=1*c,b=0;b<this.modules[c].length;b++){vare=1*b;this.modules[c][b]&&(a.beginFill(0,100),a.moveTo(e,d),a.lineTo(e+1,d),a.lineTo(e+1,d+1),a.lineTo(e,d+1),a.endFill())}returna},
setupTimingPattern:function(){for(vara=8;a<this.moduleCount-8;a++)null==this.modules[a][6]&&(this.modules[a][6]=0==a%2);for(a=8;a<this.moduleCount-8;a++)null==this.modules[6][a]&&(this.modules[6][a]=0==a%2)},setupPositionAdjustPattern:function(){for(vara=j.getPatternPosition(this.typeNumber),c=0;c<a.length;c++)for(vard=0;d<a.length;d++){varb=a[c],e=a[d];if(null==this.modules[b][e])for(varf=-2;2>=f;f++)for(vari=-2;2>=i;i++)this.modules[b+f][e+i]=-2==f||2==f||-2==i||2==i||0==f&&0==i?!0:!1}},setupTypeNumber:function(a){
for(varc=
j.getBCHTypeNumber(this.typeNumber),d=0;18>d;d++){varb=!a&&1==(c>>d&1);this.modules[Math.floor(d/3)][d%3+this.moduleCount-8-3]=b}for(d=0;18>d;d++)b=!a&&1==(c>>d&1),this.modules[d%3+this.moduleCount-8-3][Math.floor(d/3)]=b
},setupTypeInfo:function(a,c){
for(vard=j.getBCHTypeInfo(this.errorCorrectLevel<<3|c),b=0;15>b;b++){vare=!a&&1==(d>>b&1);6>b?this.modules[b][8]=e:8>b?this.modules[b+1][8]=e:this.modules[this.moduleCount-15+b][8]=e}for(b=0;15>b;b++)e=!a&&1==(d>>b&1),8>b?this.modules[8][this.moduleCount-
b-1]=e:9>b?this.modules[8][15-b-1+1]=e:this.modules[8][15-b-1]=e;this.modules[this.moduleCount-8][8]=!a
},mapData:function(a,c){for(vard=-1,b=this.moduleCount-1,e=7,f=0,i=this.moduleCount-1;0<i;i-=2)for(6==i&&i--;;){for(varg=0;2>g;g++)if(null==this.modules[b][i-g]){varn=!1;f<a.length&&(n=1==(a[f]>>>e&1));j.getMask(c,b,i-g)&&(n=!n);this.modules[b][i-g]=n;e--;-1==e&&(f++,e=7)}b+=d;if(0>b||this.moduleCount<=b){b-=d;d=-d;break}}}
};o.PAD0=236;o.PAD1=17;o.createData=function(a,c,d){
for(varc=p.getRSBlocks(a,
c),b=newt,e=0;e<d.length;e++){varf=d[e];b.put(f.mode,4);b.put(f.getLength(),j.getLengthInBits(f.mode,a));f.write(b)}for(e=a=0;e<c.length;e++)a+=c[e].dataCount;if(b.getLengthInBits()>8*a)throwError("codelengthoverflow.("+b.getLengthInBits()+">"+8*a+")");for(b.getLengthInBits()+4<=8*a&&b.put(0,4);0!=b.getLengthInBits()%8;)b.putBit(!1);for(;!(b.getLengthInBits()>=8*a);){b.put(o.PAD0,8);if(b.getLengthInBits()>=8*a)break;b.put(o.PAD1,8)}returno.createBytes(b,c)
};o.createBytes=function(a,c){
for(vard=
0,b=0,e=0,f=Array(c.length),i=Array(c.length),g=0;g<c.length;g++){varn=c[g].dataCount,h=c[g].totalCount-n,b=Math.max(b,n),e=Math.max(e,h);f[g]=Array(n);for(vark=0;k<f[g].length;k++)f[g][k]=255&a.buffer[k+d];d+=n;k=j.getErrorCorrectPolynomial(h);n=(newq(f[g],k.getLength()-1)).mod(k);i[g]=Array(k.getLength()-1);for(k=0;k<i[g].length;k++)h=k+n.getLength()-i[g].length,i[g][k]=0<=h?n.get(h):0}for(k=g=0;k<c.length;k++)g+=c[k].totalCount;d=Array(g);for(k=n=0;k<b;k++)for(g=0;g<c.length;g++)k<f[g].length&&
(d[n++]=f[g][k]);for(k=0;k<e;k++)for(g=0;g<c.length;g++)k<i[g].length&&(d[n++]=i[g][k]);returnd
};s=4;for(varj={PATTERN_POSITION_TABLE:[[],[6,18],[6,22],[6,26],[6,30],[6,34],[6,22,38],[6,24,42],[6,26,46],[6,28,50],[6,30,54],[6,32,58],[6,34,62],[6,26,46,66],[6,26,48,70],[6,26,50,74],[6,30,54,78],[6,30,56,82],[6,30,58,86],[6,34,62,90],[6,28,50,72,94],[6,26,50,74,98],[6,30,54,78,102],[6,28,54,80,106],[6,32,58,84,110],[6,30,58,86,114],[6,34,62,90,118],[6,26,50,74,98,122],[6,30,54,78,102,126],[6,26,52,
78,104,130],[6,30,56,82,108,134],[6,34,60,86,112,138],[6,30,58,86,114,142],[6,34,62,90,118,146],[6,30,54,78,102,126,150],[6,24,50,76,102,128,154],[6,28,54,80,106,132,158],[6,32,58,84,110,136,162],[6,26,54,82,110,138,166],[6,30,58,86,114,142,170]],G15:1335,G18:7973,G15_MASK:21522,getBCHTypeInfo:function(a){for(varc=a<<10;0<=j.getBCHDigit(c)-j.getBCHDigit(j.G15);)c^=j.G15<<j.getBCHDigit(c)-j.getBCHDigit(j.G15);return(a<<10|c)^j.G15_MASK},getBCHTypeNumber:function(a){
for(varc=a<<12;0<=j.getBCHDigit(c)-
j.getBCHDigit(j.G18);)c^=j.G18<<j.getBCHDigit(c)-j.getBCHDigit(j.G18);returna<<12|c
},getBCHDigit:function(a){for(varc=0;0!=a;)c++,a>>>=1;returnc},getPatternPosition:function(a){returnj.PATTERN_POSITION_TABLE[a-1]},getMask:function(a,c,d){
switch(a){
case0:return0==(c+d)%2;case1:return0==c%2;case2:return0==d%3;case3:return0==(c+d)%3;case4:return0==(Math.floor(c/2)+Math.floor(d/3))%2;case5:return0==c*d%2+c*d%3;case6:return0==(c*d%2+c*d%3)%2;case7:return0==(c*d%3+(c+d)%2)%2;default:throwError("badmaskPattern:"+
a);
}
},getErrorCorrectPolynomial:function(a){for(varc=newq([1],0),d=0;d<a;d++)c=c.multiply(newq([1,l.gexp(d)],0));returnc},getLengthInBits:function(a,c){
if(1<=c&&10>c)switch(a){case1:return10;case2:return9;cases:return8;case8:return8;default:throwError("mode:"+a);}elseif(27>c)switch(a){case1:return12;case2:return11;cases:return16;case8:return10;default:throwError("mode:"+a);}elseif(41>c)switch(a){
case1:return14;case2:return13;cases:return16;case8:return12;default:throwError("mode:"+
a);
}elsethrowError("type:"+c);
},getLostPoint:function(a){
for(varc=a.getModuleCount(),d=0,b=0;b<c;b++)for(vare=0;e<c;e++){for(varf=0,i=a.isDark(b,e),g=-1;1>=g;g++)if(!(0>b+g||c<=b+g))for(varh=-1;1>=h;h++)0>e+h||c<=e+h||0==g&&0==h||i==a.isDark(b+g,e+h)&&f++;5<f&&(d+=3+f-5)}for(b=0;b<c-1;b++)for(e=0;e<c-1;e++)if(f=0,a.isDark(b,e)&&f++,a.isDark(b+1,e)&&f++,a.isDark(b,e+1)&&f++,a.isDark(b+1,e+1)&&f++,0==f||4==f)d+=3;for(b=0;b<c;b++)for(e=0;e<c-6;e++)a.isDark(b,e)&&!a.isDark(b,e+1)&&a.isDark(b,e+
2)&&a.isDark(b,e+3)&&a.isDark(b,e+4)&&!a.isDark(b,e+5)&&a.isDark(b,e+6)&&(d+=40);for(e=0;e<c;e++)for(b=0;b<c-6;b++)a.isDark(b,e)&&!a.isDark(b+1,e)&&a.isDark(b+2,e)&&a.isDark(b+3,e)&&a.isDark(b+4,e)&&!a.isDark(b+5,e)&&a.isDark(b+6,e)&&(d+=40);for(e=f=0;e<c;e++)for(b=0;b<c;b++)a.isDark(b,e)&&f++;a=Math.abs(100*f/c/c-50)/5;returnd+10*a
}
},l={glog:function(a){if(1>a)throwError("glog("+a+")");returnl.LOG_TABLE[a]},gexp:function(a){for(;0>a;)a+=255;for(;256<=a;)a-=255;returnl.EXP_TABLE[a]},EXP_TABLE:Array(256),
LOG_TABLE:Array(256)
},m=0;8>m;m++)l.EXP_TABLE[m]=1<<m;for(m=8;256>m;m++)l.EXP_TABLE[m]=l.EXP_TABLE[m-4]^l.EXP_TABLE[m-5]^l.EXP_TABLE[m-6]^l.EXP_TABLE[m-8];for(m=0;255>m;m++)l.LOG_TABLE[l.EXP_TABLE[m]]=m;q.prototype={get:function(a){returnthis.num[a]},getLength:function(){returnthis.num.length},multiply:function(a){for(varc=Array(this.getLength()+a.getLength()-1),d=0;d<this.getLength();d++)for(varb=0;b<a.getLength();b++)c[d+b]^=l.gexp(l.glog(this.get(d))+l.glog(a.get(b)));returnnewq(c,0)},mod:function(a){
if(0>
this.getLength()-a.getLength())returnthis;for(varc=l.glog(this.get(0))-l.glog(a.get(0)),d=Array(this.getLength()),b=0;b<this.getLength();b++)d[b]=this.get(b);for(b=0;b<a.getLength();b++)d[b]^=l.gexp(l.glog(a.get(b))+c);return(newq(d,0)).mod(a)
}
};p.RS_BLOCK_TABLE=[[1,26,19],[1,26,16],[1,26,13],[1,26,9],[1,44,34],[1,44,28],[1,44,22],[1,44,16],[1,70,55],[1,70,44],[2,35,17],[2,35,13],[1,100,80],[2,50,32],[2,50,24],[4,25,9],[1,134,108],[2,67,43],[2,33,15,2,34,16],[2,33,11,2,34,12],[2,86,68],[4,43,27],
[4,43,19],[4,43,15],[2,98,78],[4,49,31],[2,32,14,4,33,15],[4,39,13,1,40,14],[2,121,97],[2,60,38,2,61,39],[4,40,18,2,41,19],[4,40,14,2,41,15],[2,146,116],[3,58,36,2,59,37],[4,36,16,4,37,17],[4,36,12,4,37,13],[2,86,68,2,87,69],[4,69,43,1,70,44],[6,43,19,2,44,20],[6,43,15,2,44,16],[4,101,81],[1,80,50,4,81,51],[4,50,22,4,51,23],[3,36,12,8,37,13],[2,116,92,2,117,93],[6,58,36,2,59,37],[4,46,20,6,47,21],[7,42,14,4,43,15],[4,133,107],[8,59,37,1,60,38],[8,44,20,4,45,21],[12,33,11,4,34,12],[3,145,115,1,146,
116],[4,64,40,5,65,41],[11,36,16,5,37,17],[11,36,12,5,37,13],[5,109,87,1,110,88],[5,65,41,5,66,42],[5,54,24,7,55,25],[11,36,12],[5,122,98,1,123,99],[7,73,45,3,74,46],[15,43,19,2,44,20],[3,45,15,13,46,16],[1,135,107,5,136,108],[10,74,46,1,75,47],[1,50,22,15,51,23],[2,42,14,17,43,15],[5,150,120,1,151,121],[9,69,43,4,70,44],[17,50,22,1,51,23],[2,42,14,19,43,15],[3,141,113,4,142,114],[3,70,44,11,71,45],[17,47,21,4,48,22],[9,39,13,16,40,14],[3,135,107,5,136,108],[3,67,41,13,68,42],[15,54,24,5,55,25],[15,
43,15,10,44,16],[4,144,116,4,145,117],[17,68,42],[17,50,22,6,51,23],[19,46,16,6,47,17],[2,139,111,7,140,112],[17,74,46],[7,54,24,16,55,25],[34,37,13],[4,151,121,5,152,122],[4,75,47,14,76,48],[11,54,24,14,55,25],[16,45,15,14,46,16],[6,147,117,4,148,118],[6,73,45,14,74,46],[11,54,24,16,55,25],[30,46,16,2,47,17],[8,132,106,4,133,107],[8,75,47,13,76,48],[7,54,24,22,55,25],[22,45,15,13,46,16],[10,142,114,2,143,115],[19,74,46,4,75,47],[28,50,22,6,51,23],[33,46,16,4,47,17],[8,152,122,4,153,123],[22,73,45,
3,74,46],[8,53,23,26,54,24],[12,45,15,28,46,16],[3,147,117,10,148,118],[3,73,45,23,74,46],[4,54,24,31,55,25],[11,45,15,31,46,16],[7,146,116,7,147,117],[21,73,45,7,74,46],[1,53,23,37,54,24],[19,45,15,26,46,16],[5,145,115,10,146,116],[19,75,47,10,76,48],[15,54,24,25,55,25],[23,45,15,25,46,16],[13,145,115,3,146,116],[2,74,46,29,75,47],[42,54,24,1,55,25],[23,45,15,28,46,16],[17,145,115],[10,74,46,23,75,47],[10,54,24,35,55,25],[19,45,15,35,46,16],[17,145,115,1,146,116],[14,74,46,21,75,47],[29,54,24,19,
55,25],[11,45,15,46,46,16],[13,145,115,6,146,116],[14,74,46,23,75,47],[44,54,24,7,55,25],[59,46,16,1,47,17],[12,151,121,7,152,122],[12,75,47,26,76,48],[39,54,24,14,55,25],[22,45,15,41,46,16],[6,151,121,14,152,122],[6,75,47,34,76,48],[46,54,24,10,55,25],[2,45,15,64,46,16],[17,152,122,4,153,123],[29,74,46,14,75,47],[49,54,24,10,55,25],[24,45,15,46,46,16],[4,152,122,18,153,123],[13,74,46,32,75,47],[48,54,24,14,55,25],[42,45,15,32,46,16],[20,147,117,4,148,118],[40,75,47,7,76,48],[43,54,24,22,55,25],[10,
45,15,67,46,16],[19,148,118,6,149,119],[18,75,47,31,76,48],[34,54,24,34,55,25],[20,45,15,61,46,16]];p.getRSBlocks=function(a,c){vard=p.getRsBlockTable(a,c);if(void0==d)throwError("badrsblock@typeNumber:"+a+"/errorCorrectLevel:"+c);for(varb=d.length/3,e=[],f=0;f<b;f++)for(varh=d[3*f+0],g=d[3*f+1],j=d[3*f+2],l=0;l<h;l++)e.push(newp(g,j));returne};p.getRsBlockTable=function(a,c){
switch(c){
case1:returnp.RS_BLOCK_TABLE[4*(a-1)+0];case0:returnp.RS_BLOCK_TABLE[4*(a-1)+1];case3:returnp.RS_BLOCK_TABLE[4*
(a-1)+2];case2:returnp.RS_BLOCK_TABLE[4*(a-1)+3]
}
};t.prototype={get:function(a){return1==(this.buffer[Math.floor(a/8)]>>>7-a%8&1)},put:function(a,c){for(vard=0;d<c;d++)this.putBit(1==(a>>>c-d-1&1))},getLengthInBits:function(){returnthis.length},putBit:function(a){varc=Math.floor(this.length/8);this.buffer.length<=c&&this.buffer.push(0);a&&(this.buffer[c]|=128>>>this.length%8);this.length++}};"string"===typeofh&&(h={text:h});h=r.extend({},{render:"canvas",width:256,height:256,typeNumber:-1,
correctLevel:2,background:"#ffffff",foreground:"#000000"
},h);returnthis.each(function(){
vara;if("canvas"==h.render){
a=newo(h.typeNumber,h.correctLevel);a.addData(h.text);a.make();varc=document.createElement("canvas");c.width=h.width;c.height=h.height;for(vard=c.getContext("2d"),b=h.width/a.getModuleCount(),e=h.height/a.getModuleCount(),f=0;f<a.getModuleCount();f++)for(vari=0;i<a.getModuleCount();i++){
d.fillStyle=a.isDark(f,i)?h.foreground:h.background;varg=Math.ceil((i+1)*b)-Math.floor(i*b),
j=Math.ceil((f+1)*b)-Math.floor(f*b);d.fillRect(Math.round(i*b),Math.round(f*e),g,j)
}
}else{
a=newo(h.typeNumber,h.correctLevel);a.addData(h.text);a.make();c=r("<table></table>").css("width",h.width+"px").css("height",h.height+"px").css("border","0px").css("border-collapse","collapse").css("background-color",h.background);d=h.width/a.getModuleCount();b=h.height/a.getModuleCount();for(e=0;e<a.getModuleCount();e++){
f=r("<tr></tr>").css("height",b+"px").appendTo(c);for(i=0;i<a.getModuleCount();i++)r("<td></td>").css("width",
d+"px").css("background-color",a.isDark(e,i)?h.foreground:h.background).appendTo(f)
}
}a=c;jQuery(a).appendTo(this)
})
}
})(jQuery);
二、HTML代码，与之前的不同，修改了一些代码：
<divclass="text-center"> <span>(二维码)</span> <divid="Qrcode"></div> <buttonclass="buttonbutton-positive" ng-click="saveImageQrcode()">保存到手机 </button> </div>
三、JS代码，这里需要将信息转化一下utf16转化为utf8格式，才能实现转化为二维码，我是将一个对象转化的：
functionutf16to8(str){
varout,i,len,c;
out="";
len=str.length;
for(i=0;i<len;i++){
c=str.charCodeAt(i);
if((c>=0x0001)&&(c<=0x007F)){
out+=str.charAt(i);
}elseif(c>0x07FF){
out+=String.fromCharCode(0xE0|((c>>12)&0x0F));
out+=String.fromCharCode(0x80|((c>>6)&0x3F));
out+=String.fromCharCode(0x80|((c>>0)&0x3F));
}else{
out+=String.fromCharCode(0xC0|((c>>6)&0x1F));
out+=String.fromCharCode(0x80|((c>>0)&0x3F));
}
}
returnout;
}
//{name:currentUser.UserName,id:currentUser.Id}这个是我需要转化的对象，也是我在扫描二维码的时候需要解析出来的内容
$(function(){
jQuery('#Qrcode').qrcode(utf16to8(angular.toJson({name:currentUser.UserName,id:currentUser.Id})))
});
至于怎么将二维码保存到手机，我之前的文章中有讲到的，如果想实现的话可以参考一下~
好了，具体实现的步骤就是这样了，大家可以提意见或者参考一下！