WCF introductory tutorial II

author ：jiankunking ​ ​​​

Basic knowledge ：

[ServiceContract] Attribute You can have the following Property Of :

CallbackContract Set up callback The type of ：Duplicate finger Service Host and Client Two way communication between

ConfigurationName Specify a... In the configuration file configuration Name

HasProtectionLevel Indicate whether security messages can be processed

Name to contract Specify a name , stay client A visible name , The default is the interface name

Namespace Assign a namespace to the message

ProtectionLevel  

SessionMode Permissive , Still not allowed , Or mandatory session

[OperationContract] Attribute You can have the following Property Of :

Action Set... On request WS-Addressing Of action
AsynchPattern Asynchronous mode
HasProtectionLevel Whether the message is encrypted , Signature
IsInitiating Indicates whether the function should be called in server Initialize one above session
IsOneWay Indicates that the function is client After calling ,client Whether it will wait for the function to return
IsTerminating Indicates whether the function should be called at the end of server It's off session
Name Set the name of the function , stay client A visible name , The default is the function name
ProtectionLevel  
ReplyAction Set the function to return the message SOAP action

1、 You can see all kinds of information on the Internet ServiceContract Of Namespace、Name And other attribute assignment codes , But these Attribute Where does it work ？

Let's take a look at , Open the solution in the previous article WcfFirstDemo.sln

Right click WCFServiceDemo The file below the project :Test..svc, Here's the picture :

The effect is as follows ：

Click on the link in the red box , The effect is as follows ：

You can see the default Namespace yes http://tempuri.org/,name Consistent with the class name
Microsoft official advice : modify Service Of Namespace, To include : Company domain name + Project name + Version number ( Such as : Date indicates version number )

Note ：

Modification item :WCFServiceDemo Below ITest.cs The code is as follows :

Log in and copy

      
      

       
       <
       
       pre 
       
       name
       
       =
       
       "code" 
       
       class
       
       =
       
       "csharp"
       
       >
      
      
      
      

       
       
1.
      
      

Log in and copy

      
      

       
       namespace 
       
       WCFServiceDemo
       
       
{
       
       
    
       
       //  Be careful :  Use “ restructure ” On the menu “ rename ” command , You can change both the code and the interface name in the configuration file “ITest”.
       
       
     [
       
       ServiceContract(
       
       Namespace 
       
       = 
       
       "javascript:void(0)", 
       
       Name 
       
       = 
       
       "JianKunKing",
       
       
    
       
       ConfigurationName 
       
       = 
       
       "JianKunKingWCFService")]
       
       
    
       
       public 
       
       interface 
       
       ITest
       
       
    {
       
       
        [
       
       OperationContract]
       
       
        
       
       string 
       
       TransferTest(
       
       int 
       
       num);
       
       
    }
       
       
}
      
      
      
      

       
       
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Right click on the item WCFServiceDemo Choose recompile , After the successful , Reopen with browser

ITest.svc, The following figure is obtained :

At this time, it has changed Service default Namespace 了 , Regenerate the deployment package , Deploy to server , And then update it client End , Then recompile the entire solution , We will report an error as follows ：

here ServiceContract So it has been changed to JianKunKing Not before Test 了 , Here's the picture ：

After correcting the error , Take a look at client Terminal app.config file , as follows , You can see bindingConfiguration、contract、name And other properties have been modified

It can be compared with that before modification app.config Compare the documents ：

From this we can see that ServiceContract Of Namespace、Name And so on. , Can play the role of renaming , Hide the real information of the server class , What the client sees is what you want it to see

ServiceContract The job is to specify service towards client Which functions are available to call .