JAVA基础：实现HTMLEncode功能的bean

//bean file


package lovejsp;


public class encodeHtml


{


      private String html="no input html";





      public String getHtml()


      {


            return HTMLEncode(html);


      }


      public void setHtml(String html)


      {


            this.html = html ;


      }


      private static String HTMLEncode(String text)


      {


            if (text==null)


            return "";


            StringBuffer results = null;


            char[] orig = null;


            int beg = 0,len=text.length();


            for (int i=0;i

            {


                  char c = text.charAt(i);


                  switch(c){


                        case 0:


                        case "&":


                        case "<":


                        case ">":


                        case """:


                              if (results == null)


                              {


                                    orig = text.toCharArray();


                                    results = new StringBuffer(len+10);


                              }


                              if (i>beg)


                              results.append(orig,beg,i-beg);


                              beg = i + 1;


                              switch (c)


                              {


                                    default : continue;


                                    case "&": results.append("&"); break;


                                    case "<": results.append("<"); break;


                                    case ">": results.append(">"); break;


                                    case """: results.append("""); break;


                              }


                        break;


                  } //switch


            }// for i


            if (results == null)


                  return text;


            results.append(orig,beg,len-beg);


            return results.toString();


      }// HTMLEncode


}