https://blog.faceutil.com/2020/04/20/%ec%8a%a4%eb%a7%88%ed%8a%b8%ec%97%90%eb%94%94%ed%84%b0smarteditor%ec%9d%98-%ec%8b%b1%ea%b8%80%eb%a9%80%ed%8b%b0-%ec%9d%b4%eb%af%b8%ec%a7%80%ec%97%85%eb%a1%9c%eb%93%9c%ed%95%98%ea%b8%b0-javajsp/