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5 Add the reference to the web service To do this, right-click on the Windows application (in our example, ConsumeHelloWebService) and select Add Web Reference The Add Web Reference dialog box will open (see Figure 21-7) and allow you to select services from different web locations In Figure 21-7, you can see that you can request services from a UDDI (Universal Description, Discovery, and Integration) directory or from a Test Microsoft UDDI directory If you are interested in learning more about UDDI, refer to 25 EXAM TIP The web service doesn t have to be created using Visual C# NET That s the wonderful part of this process You don t have to worry about the language that created the web service you don t even have to worry about the platform of the web server 6 In this example, you want to select a service from the local web server In the Add Web Reference dialog box s Address box, type http://localhost/ HelloWebService/HelloWebServiceasmx WSDL and press ENTER 7 You will see the XML shown in Figure 21-8 You will also have the option of adding the reference to the project Click on Add Reference java gs1-128 EAN 128 in Java - OnBarcode
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Barcode4J is a flexible generator for barcodes written in Java . It's free ... Interleaved 2 of 5; ITF-14; Code 39; Code 128; EAN - 128 , GS1 - 128 (based on Code 128) ... 8 Look at the Solution Explorer (Figure 21-9) and you will see that the web reference has been added to the Windows application You can now use the proxy object that has been created behind the scenes to make a call to the web service 9 Add the following code to the click event of the button private void btnConsume_Click (object sender, SystemEventArgs e) { localhostHelloWebService myService = new localhostHelloWebService(); MessageBoxShow (myServiceHelloWorld()); } To be prepared for the unexpected, Security Officers should always carry a flashlight, a watch, a notepad, and: A A screwdriver B A pocket knife C A two-way radio, ready in hand D Identification, hanging on their neck java gs1 128 Java EAN - 128 / GS1 - 128 - Barcode SDK
Java EAN - 128 / GS1 - 128 Generator is a mature and time-tested barcode generating library for Java developers. It will help users generate EAN - 128 / GS1 - 128 ... java ean 128 Generating a GS1 - 128 (formerly EAN - 128 ) barcode using ZXing ...
ZXing does support GS1 - 128 (formerly called EAN - 128 ) but ... is an open source Java barcode generator which supports EAN - 128 / GS1 - 128 . You can now run the project by pressing F5 The output is shown in the following illustration When the Consume button is clicked, an instance of the web proxy is instantiated and used to run the HelloWorld() method Except for the fact that we Figure 21-7 must instantiate the web service object using the web reference, it seems as if we used a local class To show interest when greeting a customer, a great opening statement would be: A May I help you B I ll be there in one sec, hang on C Hi! What can I get for you D How may I help you Figure 21-8 When the web reference is added to the application, a proxy object is created from the WSDL file It is the proxy object that runs on the application s behalf and makes the request of the remote object In reality, Visual Studio NET has run WSDLexe on the WSDL file to create this proxy object You can do the same thing from a command prompt by using the following line: wsdl /l:cs /o:HelloWebServiceProxycs http://localhost/HelloWebService/HelloWebServiceasmx WSDL /n:HelloService java ean 128 Java GS1-128 reader class library build GS1-128(EAN/UCC-128 ...
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Java Barcode generates barcode EAN - 128 images in Java applications. The successful Protection Officer will know every other department s products and services A True B False Important features to note about the slope are: Let s examine the previous code line: wsdl calls wsdlexe, which is the tool that generates the code for web service clients from the WSDL file /l:cs specifies the language to be used for the class file In this case, cs is the default language, C# You could specify VB for Visual Basic or JS for JScript /o:HelloWebServiceProxycs specifies the output file for the generated proxy class http://localhost/HelloWebService/HelloWebServiceasmx WSDL is the path to the WSDL file, which contains the exposed methods of the web service /n:HelloService specifies the namespace for the generated proxy class The beauty of this system is its simplicity and the convenience for the developer If you had to code method calls to a remote object, you would have to worry about how the call is marshaled to the remote object Marshalling is the process of sending arguments to the remote object and receiving the results from the method call The proxy object does all this for you You simply add the reference or run the WSDL tool, and all this functionality is created for you Here s what happens: 1 The proxy object is created from the web service s proxy class: localhostHelloWebService myService = new localhostHelloWebService(); EXAM TIP The proxy class must be in the search path for the application Place it in the \bin directory and you will have no problems 2 The client application makes a call to a method that is exposed by the proxy object In our example, that call looked like this: myServiceHelloWorld() 3 The proxy object then creates a request packet (using XML) that contains any parameters for the method call 4 The request packet is sent to the web service 5 The web service receives the packet, extracts the parameters, and executes the method 6 The web service then creates a packet with the results of the method call and sends it back to the proxy 7 The proxy receives the packet and extracts the returned data 8 The client application then uses the return data java gs1 128 Java EAN-128 /GS1-128 - Barcode SDK
Java EAN-128 /GS1-128 Generator is a mature and time-tested barcode generating library for Java developers. It will help users generate EAN-128/GS1- 128 ... java ean 128 Java EAN-128 /GS1-128 - Barcode SDK
Java EAN-128 /GS1-128 Generator is a mature and time-tested barcode generating library for Java developers. It will help users generate EAN-128/GS1- 128 ...
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