Convert HTML Character Back to Text Using Java Standard Library

Question

I would like to convert some HTML characters back to text using Java Standard Library  I was wondering whether any library would achieve my purpose           param args the command line arguments     public static void main String   args           TODO code application logic here          Happy  amp  Sad  in HTML form      String s    Happy  amp amp  Sad       System out println s        try              Change to  Happy  amp  Sad   DOESN T WORK          s   java net URLDecoder decode s   UTF-8            System out println s         catch  UnsupportedEncodingException ex

User · Accepted Answer

I think the Apache Commons Lang library s StringEscapeUtils unescapeHtml3   and unescapeHtml4   methods are what you are looking for  See https   commons apache org proper commons-text javadocs api-release org apache commons text StringEscapeUtils html

User · Answer

I m not aware of any way to do it using the standard library  But I do know and use this class that deals with html entities       HTMLEntities is an Open Source Java class that contains a collection of static methods  htmlentities  unhtmlentities       to convert special and extended characters into HTML entitities and vice versa     http   www tecnick com public code cp dpage php aiocp dp htmlentities

User · Answer

Or you can use unescapeHtml4       String miCadena  GU amp  205 A TELEF amp  211 NICA       System out println StringEscapeUtils unescapeHtml4 miCadena      This code print the line  GU  A TELEF  NICA

User · Answer

You can use the class org apache commons lang StringEscapeUtils   String s   StringEscapeUtils unescapeHtml  Happy  amp amp  Sad     It is working

User · Answer

java net URLDecoder deals only with the application x-www-form-urlencoded MIME format  e g    20  represents space   not with HTML character entities  I don t think there s anything on the Java platform for that  You could write your own utility class to do the conversion  like this one

User · Answer

Here you have to just add jar file in lib jsoup in your application and then use this code   import org jsoup Jsoup   public class Encoder       public static void main String args              String s   Jsoup parse   amp lt Fran amp ccedil ais amp gt    text            System out print s             Link to download jsoup  http   jsoup org download

User · Answer

The URL decoder should only be used for decoding strings from the urls generated by html forms which are in the  application x-www-form-urlencoded  mime type  This does not support html characters   After a search I found a Translate class within the HTML Parser library

User · Answer

As  jem suggested  it is possible to use jsoup   With jSoup 1 8 3 it il possible to use the method Parser unescapeEntities that retain the original html   import org jsoup parser Parser      String html   Parser unescapeEntities original html  false     It seems that in some previous release this method is not present

[java] Convert HTML Character Back to Text Using Java Standard Library

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