/*** 转换 HTML 特殊字符*/public static String escape( String s ){if( StringUtils.isBlank( s ) ){return "&nbsp;";}StringBuilder sb = new StringBuilder( s.length() );for( int i = 0 ; i < s.length() ; i++ ){char c = s.charAt( i );switch( c ){case '<' : sb.append( "<" );break;case '>' : sb.append( ">" );break;case '&' :sb.append( "&" );break;case '\"':sb.append( """ );break;default : sb.append( c );}}return sb.toString();}