Java string Placeholder replacement string placeholder implementation (Java Simple template rendering implementation)

Simple implementation

For Java string placeholder replacements, the professional approach is to use the String.Format and Messageformat.format features, which provide a simple, regular implementation based string placeholder implementation

    public static string TPL (string tplstr,map<string, object> data) {
         Matcher m=pattern.compile ([\\{.] *) \ \} "). Matcher (TPLSTR);
            while (M.find ()) {
                   String group=m.group ();
                   group= group.replaceall ("\\{|\\}", "");
                   String value= "";
                   if (Null!=data.get (group)) {
                       value=string.valueof (Data.get (group));
                   }
                   Tplstr=tplstr.replace (M.group (), value);
            }
            return tplstr;
    }

Using template engines such as Freemarker

Private String Defaultcharacter = "UTF-8";
Private Configuration cfg;
        Public freemarkerutils () {cfg = new Configuration ();
      Cfg.setdefaultencoding (Defaultcharacter); 
    Cfg.settagsyntax (Configuration.auto_detect_tag_syntax); Public String generatestring (map<string, object> data, String tplstr) {string result
          = NULL;
          String name= "MYSTRTPL";
              try {stringtemplateloader stringtemplateloader= new Stringtemplateloader ();
                Stringtemplateloader.puttemplate (name, TPLSTR); 
               Cfg.settemplateloader (Stringtemplateloader);
                Template Template = cfg.gettemplate (Name,defaultcharacter); 
                StringWriter out = new StringWriter ();  
                Template.process (data, out);  
                Out.flush ();
                result= out.tostring (); 
            Out.close ();  
     catch (Exception e) {e.printstacktrace ();       return result; }