ABAP和Java的destination和JNDI

try {
            Context ctx = new InitialContext();
            ConnectivityConfiguration configuration = (ConnectivityConfiguration) ctx.lookup("java:comp/env/connectivityConfiguration");

            DestinationConfiguration destConfiguration = configuration.getConfiguration(destinationName);

            if (destConfiguration == null) {
                response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
                        String.format("Destination %s is not found. Hint:"
                                + " Make sure to have the destination configured.", destinationName));
                return;
            }

            // Get the destination URL
            String value = destConfiguration.getProperty("URL");
            URL url = new URL(value + "xml?origins=Walldorf&destinations=Paris");

            String proxyType = destConfiguration.getProperty("ProxyType");
            Proxy proxy = getProxy(proxyType);

            urlConnection = (HttpURLConnection) url.openConnection(proxy);

            injectHeader(urlConnection, proxyType);

            // Copy content from the incoming response to the outgoing response
            InputStream instream = urlConnection.getInputStream();
            OutputStream outstream = response.getOutputStream();
            copyStream(instream, outstream);
        } catch (Exception e) {
            // Connectivity operation failed
            String errorMessage = "Connectivity operation failed with reason: "
                    + e.getMessage()
                    + ". See "
                    + "logs for details. Hint: Make sure to have an HTTP proxy configured in your "
                    + "local environment in case your environment uses "
                    + "an HTTP proxy for the outbound Internet "
                    + "communication.";
            LOGGER.error("Connectivity operation failed", e);
            response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
                    errorMessage);
        }