采用类似Java WS-*的方式，在一个ASP.NET服务中将不同的类暴露为多个的Port

下面是JBoss的一个SSO的例子片断：

sso2.war#RoleComponent (wsdl)

• getRoles
• getTheRoleFunctions
• getTheRoleFunctionsByCode
• getTheSystemRoles
• getUserBySystemNameAndRoleId
• isFunctionInRole

sso2.war#UserComponent (wsdl)

• Login
• LoginUser
• getFilterNodes
• getFunctions
• getTheUserFunctions
• getTheUserNodes
• getTheUserRoles
• getTheUserRoles2
• getUserByID
• getUsers
• isInFunction
• isInFunctionByCode
• isInRole
• isInRoleByCode
• getUsers

sso.war#RoleComponent (wsdl)

• getRoles
• getTheRoleFunctions
• getTheRoleFunctionsByCode
• getTheSystemRoles
• getUserBySystemNameAndRoleId

不难看出在一个Service中，提供了不同的类，以及WebMethod。
但如果在ASP.NET Web Service中直接登记2个会出现下列错误：
 

Parser Error

Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: There can be only one 'webservice' directive.

Source Error:

Line 1:  <%@ WebService Language="C#" CodeBehind="UserService.asmx.cs" Class="Inventory.UserService" %>

Line 2:  <%@ WebService Language="C#" CodeBehind="UserService.asmx.cs" Class="Inventory.GroupService" %>

Source File: /UserService.asmx    Line: 2


所以如果要采用类似方式剔掉Java的Web Service，同时又不让服务客户程序修改过多代码，可以采用Port来分割一个Web Service：
 

   <service name="SSOService">

<port binding="tns:NodeServiceBinding" name="NodeServicePort">

 <soap:addresslocation="http://win2003/sso2/service/NodeService" />

     </port>

            <port binding="tns:UserServiceBinding" name="UserServicePort">

 <soap:addresslocation="http://win2003/sso2/service/UserService" />

        </port>

            <port binding="tns:RoleServiceBinding" name="RoleServicePort">

 <soap:addresslocation="http://win2003/sso2/service/RoleService" />

</port>

 </service>

转自：沈同学和袁同学的邮件。