@ Nullable private String getCredentials ( String header ) { if ( header == null ) { return null ; } final int space = header . indexOf ( ' ' ) ; if ( space <= 0 ) { return null ; } final String method = header . substring ( 0 , space ) ; if ( ! prefix . equalsIgnoreCase ( method ) ) { return null ; } return header . substring ( space + 1 ) ; }
Parses a value of the Authorization header in the form of Bearer a892bf3e284da9bb40648ab10 .