EJB components of any type can declare Web service references to alias a Web service proxy to a JNDI name.
In the EJB-JAR file, declare Web service references using
the service-ref element as
shown in the following example:
<service-ref> <description> This is a reference to the stock quote service used to estimate portfolio value. </description> <service-ref-name>service/StockQuoteService</service-ref-name> <service-interface>com.example.StockQuoteService </service-interface> </service-ref>
In the corresponding implementation code, the Web service proxy is bound to the name java:comp/env/service/StockQuoteService and can be retrieved as shown in the Java code below:
// Obtain the default initial JNDI context. Context initCtx = new InitialContext(); // Look up the stock quote service in the environment. com.example.StockQuoteService sqs = (com.example.StockQuoteService)initCtx.lookup( "java:comp/env/service/StockQuoteService"); // Get the stub for the service endpoint com.example.StockQuoteProvider sqp = sqs.getStockQuoteProviderPort(); // Get a quote float quotePrice = sqp.getLastTradePrice(...);
After deploying an EJB-JAR that contains Web service references, you must configure the references to specify a local implementation of the Web service proxy class and other details required to connect to the Web service’s host server.
