Every now and then I have to work in an environment where imports of frameworks is prohibited and it in times like that that I had to create my own HTMLEncode function. Here is the result:
public static String HTMLEncode(String inputString) { // Check if string contains ANY special characters (<>"&) if(inputString.indexOf("<") != -1 || inputString.indexOf(">") != -1 || inputString.indexOf("\"") != -1 || inputString.indexOf("&") != -1) { char c; StringBuffer out = new StringBuffer(); for(int i=0; i < inputString.length(); i++) { c = inputString.charAt(i); if(c=='"' || c=='<' || c=='>') { out.append("&#"+(int)c+";"); } else if(c == '&'){ // Is &-sign preceding an HTML entity? if(inputString.indexOf("&", i) == i || inputString.indexOf("& #38;", i) == i || inputString.indexOf("& lt;", i) == i || inputString.indexOf("& #60;", i) == i || inputString.indexOf("& gt;", i) == i || inputString.indexOf("& #62;", i) == i || inputString.indexOf("& quot;", i)== i || inputString.indexOf("& #34;", i) == i ){ out.append(c); } else { out.append("&#"+(int)c+";"); } } else { out.append(c); } } return out.toString(); } else { return inputString; } }
NOTE! The spaces inside the strings on row 21 thru 27 are only there for displaying purposes. In real code these spaces should be removed
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