我正在编写 WCF 服务。我的代码是
namespace RestService
{
public class user
{
public user(string i, string b, string l)
{
id = i;
badgeNumber = b;
login = l;
}
public string id { get; set; }
public string badgeNumber { get; set; }
public string login { get; set; }
}
public class RestServiceImpl : IRestServiceImpl
{
#region IRestServiceImpl Members
public string XMLData(string id)
{
return "You requested product " + id;
}
public user[] JSONData(string id)
{
OleDbConnection connection = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Users\confiz\Desktop\att2000.mdb");
connection.Open();
OleDbCommand command = new OleDbCommand("SELECT count(*) FROM USERINFO", connection);
int users_count = (int)command.ExecuteScalar();
command = new OleDbCommand("SELECT * FROM USERINFO", connection);
OleDbDataReader reader = command.ExecuteReader();
// string jsonString = "";
user[] users = new user[users_count];
int i=0;
while (reader.Read())
{
users[i].id = reader["USERID"].ToString();
users[i].badgeNumber = reader["Badgenumber"].ToString();
users[i].login = reader["SSN"].ToString();
/* user = new user(reader["USERID"].ToString(), reader["Badgenumber"].ToString(), reader["SSN"].ToString());
System.Web.Script.Serialization.JavaScriptSerializer jsSerializer;
jsSerializer = new System.Web.Script.Serialization.JavaScriptSerializer();
System.Text.StringBuilder sbUser = new System.Text.StringBuilder();
jsSerializer.Serialize(user, sbUser);
string json = sbUser.ToString();
*/
// jsonString = jsonString + json;
i++;
}
connection.Close();
return users;
}
#endregion
}
}
我的 Web.config 文件是这样的
<?xml version="1.0"?>
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0" />
</system.web>
<system.serviceModel>
<services>
<service name="RestService.RestServiceImpl" behaviorConfiguration="ServiceBehaviour">
<!-- Service Endpoints -->
<!-- Unless fully qualified, address is relative to base address supplied above -->
<endpoint address ="" binding="webHttpBinding" contract="RestService.IRestServiceImpl" behaviorConfiguration="web">
<!--
Upon deployment, the following identity element should be removed or replaced to reflect the
identity under which the deployed service runs. If removed, WCF will infer an appropriate identity
automatically.
-->
</endpoint>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="ServiceBehaviour">
<!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
<serviceMetadata httpGetEnabled="true"/>
<!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information -->
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="web">
<webHttp/>
</behavior>
</endpointBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>
</configuration>
但是当我运行此代码时，我收到错误无法添加服务。服务元数据可能无法访问。确保您的服务正在运行并公开元数据。
错误详细信息：错误：无法从 RestServiceImpl.svc 获取元数据 如果这是您有权访问的 Windows (R) Communication Foundation 服务，请检查您是否已在指定地址启用元数据发布。