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i am new member for mappoint, now I meet some strange issue, can anyone help me?

1.I download the java demo from demo.mappoint.net. Also, I modified STORES_DATASOURCE and STORES_ENTITYTYPE in StoreLocator.java, and I set user name and password in TestUnit.java, and I add client-config.wsdd in classpath. But when I run it, I get following exception:

AxisFault
faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException
faultSubcode:
faultString: java.io.IOException
faultActor:
faultNode:
faultDetail:
{http://xml.apache.org/axis/}stackTrace: java.io.IOException
at sun.net.www.protocol.http.HttpURLConnection.getInp utStream(HttpURLConnection.java:593)
at java_1_4.SimpleHTTPSender.readFromConnection(Simpl eHTTPSender.java:103)
at java_1_4.SimpleHTTPSender.invoke(SimpleHTTPSender. java:64)
at org.apache.axis.strategies.InvocationStrategy.visi t(InvocationStrategy.java:71)
at org.apache.axis.SimpleChain.doVisiting(SimpleChain .java:150)
at org.apache.axis.SimpleChain.invoke(SimpleChain.jav a:120)
at org.apache.axis.client.AxisClient.invoke(AxisClien t.java:180)
at org.apache.axis.client.Call.invokeEngine(Call.java :2564)
at org.apache.axis.client.Call.invoke(Call.java:2553)
at org.apache.axis.client.Call.invoke(Call.java:224
at org.apache.axis.client.Call.invoke(Call.java:2171)
at org.apache.axis.client.Call.invoke(Call.java:1691)
at net.mappoint.s.mappoint_30.FindServiceSoapStub.fin dNearby(FindServiceSoapStub.java:1151)
at com.spatialpoint.mappoint.storelocator.StoreLocato r.calculateNearbyStores(StoreLocator.java:511)
at com.spatialpoint.mappoint.storelocator.StoreLocato r.getNearbyStores(StoreLocator.java:1127)
at TestUnit.testSOAPHeaders(TestUnit.java:71)
at TestUnit.main(TestUnit.java:36)
Caused by: java.net.ProtocolException: Server redirected too many times (20)
at sun.net.www.protocol.http.HttpURLConnection.getInp utStream(HttpURLConnection.java:800)
at sun.net.www.protocol.http.HttpURLConnection.getHea derField(HttpURLConnection.java:1451)
at java.net.URLConnection.getContentType(URLConnectio n.java:382)
at java_1_4.SimpleHTTPSender.readFromConnection(Simpl eHTTPSender.java:9
... 15 more

and I monitor the soap message what i send, just like this:
<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlnssd="http://www.w3.org/2001/XMLSchema" xmlnssi="http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Body>
<FindNearby xmlns="http://s.mappoint.net/mappoint-30/">
<specification>
<DataSourceName>Onvantage.46555.aa</DataSourceName>
<LatLong>
<Latitude>0.0</Latitude>
<Longitude>0.0</Longitude>
</LatLong>
<Distance>5.0</Distance>
<Filter>
<EntityTypeName>aa</EntityTypeName>
</Filter>
</specification>
</FindNearby>
</soapenv:Body>
</soapenv:Envelope>

can anyone tell me what is wrong about it ?

2.I can use my user name and password to login in https://mappoint-css.partners.extran...oft.com/cscV3/, and config some data source. So the username and password is valid. But when I access http://findv3.staging.mappoint.net/F...ndService.asmx, it pop up a windows and ask me input username and password. I enter them which i used in https://mappoint-css.partners.extran...oft.com/cscV3/, but it is invalid ,why ?

Thank in advanced.