You can create a JAX-RPC Web service using an existing WSDL document. Write the client side application that invokes the service.Install_dir/ samples/webservices/jaxrpc/simple/srcįor more information on creating a build.xml file, see "Creating the build.xml File". You can find a sample build.xml file at the following location: You can use an ant build file ( build.xml) to compile the service, generate server-side artifacts and create a portable war file. A stub is a local object that acts as a proxy for the service endpoint. The tie class handles marshalling and unmarshalling the data between the service endpoint class and the SOAP format. Similarly, the tie class resides on the server side, between the service endpoint and the JAX-RPC runtime system. Converting a client request to SOAP format is called marshalling converting back from SOAP format to a client response is unmarshalling. It also converts the response from the service endpoint, which it receives in the form of a SOAP message, to the format required by the client. The stub class is responsible for converting a request from a JAX-RPC service client to a SOAP message and sending it across to the service endpoint using the specified protocol. The stub class sits on the client side, between the service client and the JAX-RPC client runtime system. Stubs and ties are the classes that enable the communication between a service endpoint and a client. Stubs and ties are the most important artifacts that the wscompile tool generates. Wscompile -gen:both -d build/client -classpath build/shared config.xml The following is the syntax to run the wscompile tool: The configuration file of the example is given below:įor information about the configuration file, see "Configuration File".įor information about the XML schema for creating a configuration file, see Appendix A, "XML Schema Definitions". The wscompile tool also creates the WSDL description for the service. The wscompile tool uses the configuration file, config.xml to read the interface and implementation class, for generating client-side and server-side artifacts. JAX-RPC implementation in Sun ONE Application Server provides the wscompile tool to generate these artifacts. In order to handle the communication between the client and the service endpoint, JAX-RPC needs various classes, interfaces, and other files on both the client-side and the server-side.Implementation of JAX-RPC in Sun ONE Application Server provides the following benefits to the developers: The implementation also provides necessary tools to generate stubs, ties, and other artifacts needed on the client-side and the server-side. Sun ONE Application Server implementation of the JAX-RPC API uses HTTP as the transport protocol. JAX-RPC uses technologies HTTP, SOAP, and the WSDL defined by the World Wide Web Consortium (W3C), which makes it possible for a JAX-RPC client to access a Web service that is not running on the Java platform and vice versa. For more information on SOAP messages, see "SOAP Messages". These calls and responses are transmitted as SOAP messages over HTTP. The SOAP specification defines envelope structure, encoding rules, and a convention for representing remote procedure calls and responses. In JAX-RPC, a remote procedure call is represented by an XML-based protocol such as SOAP. The RPC mechanism enables clients to execute procedures on other systems in a distributed environment. Java TM API for XML-based RPC (JAX-RPC) is an API for building Web services and clients that use remote procedure calls (RPC) and XML. Java Language Types Supported By JAX-RPC.
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