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我嘗試了一個soap weservice示例。 該代碼使用GeoIp webservice從ip地址確定國家。 當我執行代碼時,出現以下異常。運行代碼時未將對象引用設置爲對象execption的實例
例外:
Exception in thread "main" com.sun.xml.internal.ws.fault.ServerSOAPFaultException: Client received SOAP Fault from server: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.NullReferenceException: Object reference not set to an instance of an object.
at WebserviceX.Service.Adapter.IPAdapter.CheckIP(String IP)
at WebserviceX.Service.GeoIPService.GetGeoIP(String IPAddress)
--- End of inner exception stack trace --- Please see the server log to find more detail regarding exact cause of the failure.
at com.sun.xml.internal.ws.fault.SOAP11Fault.getProtocolException(SOAP11Fault.java:178)
at com.sun.xml.internal.ws.fault.SOAPFaultBuilder.createException(SOAPFaultBuilder.java:116)
at com.sun.xml.internal.ws.client.sei.StubHandler.readResponse(StubHandler.java:238)
at com.sun.xml.internal.ws.db.DatabindingImpl.deserializeResponse(DatabindingImpl.java:189)
at com.sun.xml.internal.ws.db.DatabindingImpl.deserializeResponse(DatabindingImpl.java:276)
at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:104)
at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:77)
at com.sun.xml.internal.ws.client.sei.SEIStub.invoke(SEIStub.java:147)
at com.sun.proxy.$Proxy31.getGeoIP(Unknown Source)
at org.manjosh.demo.IPlocationFinder.main(IPlocationFinder.java:19)
我的代碼:
import net.webservicex.GeoIP;
import net.webservicex.GeoIPService;
import net.webservicex.GeoIPServiceSoap;
public class IPlocationFinder {
public static void main(String[] args) {
if (args.length != 1){
System.out.println("you need to pass atleast 1 IP address");
}
else
{
String ipAddress = args[0];
GeoIPService ipService = new GeoIPService();
GeoIPServiceSoap geoIpserviceSoap = ipService.getGeoIPServiceSoap();
GeoIP geoIp = geoIpserviceSoap.getGeoIP(ipAddress);
System.out.println((String)geoIp.getCountryName());
}
}
}
試試IP 212.58.246.79看看你是否得到英國。如果這樣做意味着您輸入的IP無法映射。這是一個很糟糕的服務,因爲許多人失蹤。 有數以千計的IP免費數據庫。我發現其中一個,我在自己的MySQL中執行查找,而不是依賴Web服務。 – Arminius
異常說明發生了什麼。你到達了主機,你發送了你的請求,但是這對服務並不好,或者它不對。要進一步挖掘,您需要捕獲您發送的內容以及實際的Soap故障。嘗試使用SOAPUI和tcpMonitor。當您使SOAPUI工作時,您可以比較您的代碼請求和正在運行的SOAPUI請求。 – Vadim
謝謝,它適用於英國。 – manjosh