如果服务参考不起作用，我能做什么？

charset=utf-8). If using a custom encoder, be sure that the IsContentTypeSupported     method is implemented properly. The first 1024 bytes of the response were: \'<?xml     version=\"1.0\" encoding=\"UTF-8\"?>
<wsdl:definitions
ns:version=\"76.0\"
xmlns:wsdl=\"http://schemas.xmlsoap.org/wsdl/\"
xmlns:xs=\"http://www.w3.org/2001/XMLSchema\"
xmlns=\"http://schemas.xmlsoap.org/wsdl/\"
xmlns:SOAP-ENC=\"http://schemas.xmlsoap.org/soap/encoding/\"
xmlns:ns=\"urn:ebay:api:PayPalAPI\"
xmlns:wsdlsoap=\"http://schemas.xmlsoap.org/wsdl/soap/\"
xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"
xmlns:ebl=\"urn:ebay:apis:eBLBaseComponents\"
xmlns:cc=\"urn:ebay:apis:CoreComponentTypes\"
xmlns:ed=\"urn:ebay:apis:EnhancedDataTypes\"
targetNamespace=\"urn:ebay:api:PayPalAPI\">
<wsdl:types>
    <schema xmlns=\"http://www.w3.org/2001/XMLSchema\" targetNamespace=\"urn:ebay:api:PayPalAPI\" elementFormDefault=\"qualified\" attributeFormDefault=\"unqualified\">
        <import namespace=\"urn:ebay:apis:CoreComponentTypes\" schemaLocation=\"CoreComponentTypes.xsd\"/>
        <import namespace=\"urn:ebay:apis:eBLBaseComponents\" schemaLocation=\"eBLBaseComponents.xsd\"/>
        <import namespace=\"urn:ebay:apis:EnhancedDataTypes\" schemaLocation=\"En\'.
If the service is defined in the current solution, try building the solution and adding the service reference again.