- Learn Web Services
- Hat Tip 1 3 – Http Web Services Client Access Server
- Hat Tip 1 3 – Http Web Services Client Access Login
- Web Services Resources
There is no Data Transfer charge between two Amazon web services within the same region (i.e. Between Amazon EC2 US West and another AWS service in US West). Red Hat Enterprise Linux on Amazon EC2 images include a basic subscription for updates and maintenance fixes that is reflected in the price charged by Amazon Web Services. In the context of this document, a stand-alone client is a client that has a run-time environment independent of WebLogic Server 12.1.3. (Managed clients, such as Web Services, rely on a server-side container to provide the run time necessary to access a server.). File sharing is the practice of distributing or providing access to digital media, such as computer programs, multimedia (audio, images and video), documents or electronic books.File sharing may be achieved in a number of ways. Common methods of storage, transmission and dispersion include manual sharing utilizing removable media, centralized servers on computer networks, World Wide Web-based. However, in this tutorial you just make note of the access token value and manually create a HTTP request with the access token included, as explained in the next major step. The value of the access token (which in the preceding example is -iOws8j7JYu0p07jOFMEA.) will change on every approval. Note that the access token expires.
- Selected Reading
Different books and different organizations provide different definitions to Web Services. Some of them are listed here.
Hat Tip 1 3 – Http Web Services Client Access Server
- A web service is any piece of software that makes itself available over the internet and uses a standardized XML messaging system. XML is used to encode all communications to a web service. For example, a client invokes a web service by sending an XML message, then waits for a corresponding XML response. As all communication is in XML, web services are not tied to any one operating system or programming language—Java can talk with Perl; Windows applications can talk with Unix applications.
- Web services are self-contained, modular, distributed, dynamic applications that can be described, published, located, or invoked over the network to create products, processes, and supply chains. These applications can be local, distributed, or web-based. Web services are built on top of open standards such as TCP/IP, HTTP, Java, HTML, and XML.
- Web services are XML-based information exchange systems that use the Internet for direct application-to-application interaction. These systems can include programs, objects, messages, or documents.
- A web service is a collection of open protocols and standards used for exchanging data between applications or systems. Software applications written in various programming languages and running on various platforms can use web services to exchange data over computer networks like the Internet in a manner similar to inter-process communication on a single computer. This interoperability (e.g., between Java and Python, or Windows and Linux applications) is due to the use of open standards.
To summarize, a complete web service is, therefore, any service that −
- Is available over the Internet or private (intranet) networks
- Uses a standardized XML messaging system
- Is not tied to any one operating system or programming language
- Is self-describing via a common XML grammar
- Is discoverable via a simple find mechanism
Components of Web Services
![Hat tip 1 3 – http web services client access portal Hat tip 1 3 – http web services client access portal](https://photos1.blogger.com/x/blogger/3402/1340/400/682608/urlremoval_blogpost6.png)
The basic web services platform is XML + HTTP. All the standard web services work using the following components −
- SOAP (Simple Object Access Protocol)
- UDDI (Universal Description, Discovery and Integration)
- WSDL (Web Services Description Language)
All these components have been discussed in the Web Services Architecture chapter.
How Does a Web Service Work?
A web service enables communication among various applications by using open standards such as HTML, XML, WSDL, and SOAP. A web service takes the help of −
- XML to tag the data
- SOAP to transfer a message
- WSDL to describe the availability of service.
You can build a Java-based web service on Solaris that is accessible from your Visual Basic program that runs on Windows.
You can also use C# to build new web services on Windows that can be invoked from your web application that is based on JavaServer Pages (JSP) and runs on Linux.
Example
Consider a simple account-management and order processing system. The accounting personnel use a client application built with Visual Basic or JSP to create new accounts and enter new customer orders.
The processing logic for this system is written in Java and resides on a Solaris machine, which also interacts with a database to store information.
The steps to perform this operation are as follows −
- The client program bundles the account registration information into a SOAP message.
- This SOAP message is sent to the web service as the body of an HTTP POST request.
- The web service unpacks the SOAP request and converts it into a command that the application can understand.
- The application processes the information as required and responds with a new unique account number for that customer.
- Next, the web service packages the response into another SOAP message, which it sends back to the client program in response to its HTTP request.
- The client program unpacks the SOAP message to obtain the results of the account registration process.
This chapter describes what a stand-alone client is, types of clients, client features, and how clients are distributed. In the context of this document, a stand-alone client is a client that has a run-time environment independent of WebLogic Server 12.1.3. (Managed clients, such as Web Services, rely on a server-side container to provide the run time necessary to access a server.) Stand-alone clients that access WebLogic Server 12.1.3 applications range from simple command-line utilities that use standard I/O to highly interactive GUI applications built using the Java Swing/AWT classes.
This chapter includes the following sections:
Distributing Client Jar Files
For information on license requirements when using client JARs and other resources provided in Oracle WebLogic Server for creating stand-alone clients, see 'Stand-Alone WebLogic Clients' in Oracle® Fusion Middleware Licensing Information.
WebLogic T3 Clients
The WebLogic T3 clients are Java RMI clients that use Oracle's T3 protocol to communicate with WebLogic Server. T3 clients outperform other client types, and are the most recommended type of client.
WebLogic Thin T3 Client
The WebLogic Thin T3 java client provides a light-weight alternative to the WebLogic Install, Full, and Thin IIOP clients. This client provides the same performance that you would see with the full client, but leverages a much smaller jar file. The Thin T3 client supports most of the use cases in which the full client can be used.
The Thin T3 client can be used in stand-alone applications, and is also designed for applications running on foreign (non-WebLogic) servers. One common use case is integration with WebLogic JMS destinations.
- Taskpaper 3 7 6 – simple to do listening. 'Using WebLogic RMI with T3 Protocol' in Developing RMI Applications for Oracle WebLogic Server
WebLogic Full Client (Deprecated)
The WebLogic Full Client requires the largest JAR file (
wlfullclient.jar
) among the stand-alone clients, but it has the most features and is the best overall performer. All three T3 clients have the same performance. The wlfullclient.jar
also provides IIOP support. See:- 'Using WebLogic RMI with T3 Protocol' in Developing RMI Applications for Oracle WebLogic Server
![Access Access](https://photos1.blogger.com/x/blogger/3402/1340/400/601085/urlremoval_blogpost5.png)
Note:
If you run the WebLogic Full Client from a Hat Tip 1 3 – Http Web Services Client Access Login
<java>
task that is invoked in an Ant script, see Running the WebLogic Full Client in a Non-Forked VM, for important information regarding the RSA Crypto-J library, which is included in the wlfullclient.jar
manifest classpath.WebLogic Install Client
The Install client is available from a full WebLogic Server installation. It uses the
weblogic.jar
file located at WL_HOME/server/lib
and provides client-side support for all WebLogic Server-specific value-added features. It is the only client that supports server-side operations, such as:- Operations necessary for development purposes, such as the ejbc compiler.
- Administrative operations such as deployment.
- WLST and client-side JSR 88 applications that invoke server-side operations.
RMI-IIOP Clients
IIOP can be a transport protocol for distributed applications with interfaces written in Java RMI. When they are an option, Oracle recommends using T3 clients instead of IIOP clients. For more information, see:
For more information, see 'Using RMI over IIOP' in Developing RMI Applications for Oracle WebLogic Server.
CORBA Clients
If you are not working in a Java-only environment, you can use IIOP to connect your Java programs with Common Object Request Broker Architecture (CORBA) clients and execute CORBA objects. IIOP can be a transport protocol for distributed applications with interfaces written in Interface Definition Language (IDL) or Java RMI. However, the two models are distinctly different approaches to creating an interoperable environment between heterogeneous systems. When you program, you must decide to use either IDL or RMI interfaces; you cannot mix them.WebLogic Server supports the following CORBA client models:
JMX Clients
You can use a JMX client to access WebLogic Server MBeans. See 'Accessing WebLogic Server MBeans With JMX' in Developing Custom Management Utilities Using JMX for Oracle WebLogic Server.
JMS Clients
WebLogic Server provides a number of JMS clients that provide Java EE and WebLogic JMS functionality.
Tip:
Oracle recommends using an efficient T3 protocol capable Java client -- either the Install, Full, and Thin T3. The Thin java client uses the slower IIOP protocol and is only recommended when the Thin T3 client is considered to be too large for your use case.- WebLogic Thin T3 client, see Developing a WebLogic Thin T3 Client.
- WebLogic Full client, see Developing a WebLogic Full Client (Deprecated).
- WebLogic Install client, See WebLogic Install Client.
- JMS thin client, see Chapter 6, 'WebLogic JMS Thin Client.'
- JMS SAF client, see Chapter 7, 'Reliably Sending Messages Using the JMS SAF Client.'
- JMS C client, see 'WebLogic JMS C API' in Developing JMS Applications for Oracle WebLogic Server
- JMS .NET client, see Developing JMS .NET Client Applications for Oracle WebLogic Server
- WebLogic AQ JMS client, see 'Stand-alone WebLogic AQ JMS Clients' in Administering JMS Resources for Oracle WebLogic Server. The WebLogic AQ JMS client obtains destination information using WebLogic Server JNDI and provides direct access to Oracle data base AQ JMS destinations using an embedded driver. It does not provide access to WebLogic Server JMS destinations.
Web Services Clients
A stand-alone Web Services client (wseeclient.jar) uses WebLogic client classes to invoke a Web Service hosted on WebLogic Server or on other application servers. See 'Using a Stand-alone Client JAR File When Invoking Web Services' in Developing JAX-RPC Web Services for Oracle WebLogic Server.
WebLogic Tuxedo Connector Clients
WebLogic Tuxedo Connector provides inter-operability between WebLogic Server applications and Tuxedo services. See:
- 'Developing Oracle WebLogic Tuxedo Connector Client EJBs' in the Developing Oracle WebLogic Tuxedo Connector Applications for Oracle WebLogic Server
- 'How to Develop RMI/IIOP Applications for the Oracle WebLogic Tuxedo Connector' in the Developing Oracle WebLogic Tuxedo Connector Applications for Oracle WebLogic Server
- 'How to Develop Oracle WebLogic Tuxedo Connector Client Beans using the CORBA Java API' in the Developing Oracle WebLogic Tuxedo Connector Applications for Oracle WebLogic Server
Clients and Features
The following table lists the types of clients supported in a WebLogic Server environment, and their characteristics, features, and limitations.
The gardens between ps4. Note:
Oracle does not support combining clients to create extended feature sets. Select a client that best fits your environment and use only the client classes specified for that client type.Table 2-1 WebLogic Server Client Types and Features
Client | Type | Language | Protocol | Client Class Requirements | Key Features |
---|---|---|---|---|---|
WL Thin T3 Client | RMI | Java | T3 | wlthint3client.jar |
|
Deprecated WL Full Client (T3) | RMI | Java | T3 | wlfullclient.jar |
|
Deprecated WLS-IIOP (Introduced in WebLogic Server 7.0) | RMI | Java | IIOP | wlfullclient.jar |
|
Thin Client | RMI | Java | IIOP | wlclient.jar |
|
CORBA/IDL | CORBA | Languages that OMG IDL maps to, such as C++, C, Smalltalk, COBOL | IIOP | no WebLogic classes |
|
Java SE | RMI | Java | IIOP | no WebLogic classes |
|
JMS Thin Client | RMI | Java | IIOP | wljmsclient.jar wlclient.jar |
|
JMS SAF Client (Introduced in WebLogic Server 9.2) | RMI | Java | IIOP |
|
|
JMS C Client (Introduced in WebLogic Server 9.0) | JNI | C | Any | Any WebLogic JMS capable Java client, such as wlthint3client.jar |
|
JMS .NET Client (Introduced in WebLogic Server 10.3) | T3 | .NET | T3 | WebLogic.Messaging.dll dynamic library |
|
WebLogic AQ JMS Client (Introduced in WebLogic Server 10.3.1) | JNDI/ | Java | IIOP/T3 + | aqapi.jar , o6.jar , orai18n.jar and the wlclient.jar , wlfullclient.jar , weblogic.jar (Install client), or wlthint3client.jar | See 'Stand-alone WebLogic AQ JMS Clients' in Administering JMS Resources for Oracle WebLogic Server. |
JMX | RMI | Java | IIOP | wljmxclient.jar | See 'Accessing WebLogic Server MBeans with JMX' in Developing Custom Management Utilities Using JMX for Oracle WebLogic Server. |
Web Services | SOAP | Java | HTTP/S | wseeclient.jar | See 'Invoking a Web Service from a Stand-alone Client' in Developing JAX-WS Web Services for Oracle WebLogic Server. |
C++ Client | CORBA | C++ | IIOP | Tuxedo libraries |
|
Tuxedo Server and Native CORBA client | CORBA or RMI | C++ | Tuxedo-General-Inter-Orb-Protocol (TGIOP) | Tuxedo libraries |
|