安装ccap库 npm install ccap

var ccap = require();

var captcha = ccap({

  width:190,

  height:50, 

  offset:30,

  quality:100,

  fontsize:40,

  generate:function(){

    //自定义生成字符串

    //此方法可不要
           var str = "qQ";
           return str;

  }

  

});

var ary = captcha.get();

console.log(ary[0]);//字符串

res.write(ary[1]); //

res.end();

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