Asp.Net WebService如何解决跨域问题

跨域问题可以通过在Web.config文件中配置webHttpBinding和corsBehavior来解决。具体步骤为：在Web.config文件中添加以下内容：

<system.serviceModel>
  <bindings>
    <webHttpBinding>
      <binding name="webBinding" crossDomainScriptAccessEnabled="true"/>
    </webHttpBinding>
  </bindings>
  <behaviors>
    <endpointBehaviors>
      <behavior name="webBehavior">
        <webHttp corsEnabled="true"/>
      </behavior>
    </endpointBehaviors>
    <serviceBehaviors>
      <behavior>
        <serviceMetadata httpGetEnabled="true"/>
        <serviceDebug includeExceptionDetailInFaults="false"/>
      </behavior>
    </serviceBehaviors>
  </behaviors>
  <services>
    <service name="Service1">
      <endpoint address="" binding="webHttpBinding" contract="IService1" behaviorConfiguration="webBehavior" bindingConfiguration="webBinding"/>
    </service>
  </services>
</system.serviceModel>

这样就可以实现跨域访问。