Android WebService connection fails, help me find the reason

Android webservice ksoap2 login

Just started learning Android, many do not know the place. This problem has not found reason:
Information found on the Internet to connect remote database use Android WebService, get the WebService data koap2.
I am here to do a simple test landing:
I use Eclipse built a Dynamic Web Project Project: webTest, write the relevant code, connect to the database test is successful. After the file name of the class IPersonImp right click and select "Web Services" -> "Create Web Service" to automatically create webservice:

Under the project will be deployed to Tomcat, start Tomcat, enter the URL in the browser, can be found wsdl:

Browser Test landing effect (the password is wrong, the result is fail):

problem :
Create a new Android project, MyWebServiceHelper class code:

 
import java.io.IOException; 

import org.ksoap2.SoapEnvelope; 
import org.ksoap2.serialization.SoapObject; 
import org.ksoap2.serialization.SoapSerializationEnvelope; 
import org.ksoap2.transport.HttpTransportSE; 
import org.xmlpull.v1.XmlPullParserException; 

import android.util.Log; 


public class MyWebServiceHelper {

/ / WSDL document namespace 
private static final String targetNameSpace = "http://service.main"; 

/ / WSDL document URL 
private static final String WSDL = "http://localhost:8181/webTest/services/IPersonImp"; 

/ / Method name you want to call (get Myervices the login method) 
private static final String login = "login"; 

public String login (String uname, String pwd) {
String reutrnResult = null; 
SoapObject request = new SoapObject (targetNameSpace, login); 

request.addProperty ("uname", uname); 
request.addProperty ("pwd", pwd); 

Log.i ("mylog", "request ---" + request); 

SoapSerializationEnvelope envelope = new SoapSerializationEnvelope (
SoapEnvelope.VER11); 

envelope.dotNet = false; 
envelope.setOutputSoapObject (request); 
HttpTransportSE httpTranstation = new HttpTransportSE (WSDL); 
try {
Log.i ("mylog", "info ---" + httpTranstation) ;/ / log print here, it transferred to the following catch (IOException e) section 
httpTranstation.call (targetNameSpace + login, envelope); 
Log.i ("mylog", "info"); 
if (envelope.getResponse ()! = null) {
SoapObject soapObject = (SoapObject) envelope.getResponse (); 
Log.i ("mylog", "username --------" + soapObject.getProperty ("name")); 
Log.i ("mylog", "password --------" + soapObject.getProperty ("pwd")); 
reutrnResult = "ok"; 
} 

} Catch (IOException e) {
Log.e ("mylog", "error ------ 1111"); 
e.printStackTrace (); 
reutrnResult = "Failed to connect WSDL - 1" ;/ / android interface returns the result 
 runtime} Catch (XmlPullParserException e) {
Log.e ("mylog", "error ------ 2222"); 
reutrnResult = "Failed to connect WSDL - 2"; 
e.printStackTrace (); 
} 
return reutrnResult; 
} 

} 

Logcat error message:

The first one is a system error message connection failed: java.net.ConnectException: failed to connect to localhost/127.0.0.1 (port 8181): connect failed: ECONNREFUSED (Connection refused)
android interface:

This time Tomcat is the start state, I can access the page to refresh http://localhost:8181/webTest/services/IPersonImp?wsdl wsdl, but why Android connection fail?


Another problem ( second question, nothing to do with the first question )
webTest works inside IPersonImp class when it inside getCompanyList method (returns a collection), right click and choose "Web Services" -> "Create Web Service" warning will appear automatically created webservice, why ah? If only the login method (returns String) on ​​the matter, anyway, you can not return the collection
IPersonImp code:

 
public class IPersonImp implements IPerson {
PersonDAO comdao = new PersonDAO (); 
/ / Get a list of all users 
public List  getCompanyList () {
List  list = new ArrayList  (); 
try {
list = comdao.getCompanyList (); 
} Catch (SQLException e) {
e.printStackTrace (); 
list = null; 
} 
return list; 
} 

public String login (String uname, String pwd) {
/ / TODO Auto-generated method stub 

Person com = new Person (); 
com = comdao.login (uname, pwd); 
String result = "fail"; 
if (com! = null) {
result = "success"; 
} 

return result; 
} 
} 

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Reply:
Virtual machine to access the machine, not able to localhost or 127.0.0.1, starting 10.0.0.2.
Reply:

cited a floor a_mean reply:

virtual machine to access the machine, not able to localhost or 127.0.0.1, starting 10.0.0.2.

Thank you, I changed localhost 10.0.2.2 can login. If not, the simulator but the phone, I can use this method to test the local localhost services?
Reply:

cited a floor a_mean reply:

virtual machine to access the machine, not able to localhost or 127.0.0.1, starting 10.0.0.2.

Also, could you help me look at the second question is how is it?
Why return to the List collection, select "Web Services" -> "Create Web Service" will appear automatically created webservice screenshot above warning?
Reply:
The landlord made about the source look white? Recently watching webservice but can not read this one, ah, still do not know how to access webservice
Reply:
The landlord, the phone connection is not solved that problem yet
Reply:

references, 5th Floor zengwenman reply:

landlord, phone connections are not solved that problem yet

Because I use the simulator, rather than a real machine, you can not use localhost access
According to # 1 floor to reply to localhost 10.0.2.2 has been resolved