O seguinte erro ocorreu:

javax.servlet.ServletException: javax.servlet.jsp.JspException: Problem accessing the absolute URL "https://uspdigital.usp.br/wsusuario/creditoObter?sglare=ac&nomsis=Convênios&jsp=webCreditos2.jsp". java.io.IOException: Server returned HTTP response code: 400 for URL: https://uspdigital.usp.br/wsusuario/creditoObter?sglare=ac&nomsis=Convênios&jsp=webCreditos2.jsp