我在使用来自Android设备的KSOAP2发送到.NET Web服务的复杂对象的属性上收到“强制转换”错误。该属性是一个复杂对象的数组。互联网上的文档帮助我发送和接收简单的数据类型（字符串，整数，日期等）。我甚至可以从.NET Web服务中读取一系列复杂对象。我只是无法将一系列复杂对象发送回Web服务。请帮忙。这就是我所拥有的：
环境： Client = Android Development使用最新的KSOAP lib进行通信。 Server = .NET Web服务（Visual Studio 2008）。注意：这不是WCF。
.NET Web服务：
[SoapRpcMethod(), WebMethod]
public void WriteCaseInfo(CaseInformation caseInfo)
{
...
...
}
ANDROID客户端代码：
作为复杂参数发送的父类：
public class CaseInformation extends IABaseKSoap2Serializable
{
public String Name;
public int Id;
public Vector<MultiPartDataElement> SiteListItems = new Vector<MultiPartDataElement>();
@Override
public Object getProperty(int arg0)
{
switch(arg0)
{
case 0:
return Name;
case 1:
return Id;
case 2:
return SiteListItems;
}
return null;
}
@Override
public int getPropertyCount()
{
return 3;
}
@Override
public void getPropertyInfo(int index, Hashtable arg1, PropertyInfo info)
{
switch(index)
{
case 0:
info.type = PropertyInfo.STRING_CLASS;
info.name = "Name";
break;
case 1:
info.type = PropertyInfo.INTEGER_CLASS;
info.name = "Id";
break;
case 2:
info.type = new Vector<MultiPartDataElement>().getClass();
info.name = "SiteListItems";
break;
default:break;
}
}
@Override
public void setProperty(int index, Object value)
{
switch(index)
{
case 0:
Name = value.toString();
break;
case 1:
Id = Integer.parseInt(value.toString());
break;
case 2:
SiteListItems = (Vector<MultiPartDataElement>)value;
break;
default:
break;
}
}
}
注意：如果我从客户端代码和Web服务中删除SiteListItems属性，一切正常。
上述对象中Array中使用的复杂类：
public class MultiPartDataElement extends IABaseKSoap2Serializable
{
public int Id;
public String Name;
// default constructor
public MultiPartDataElement()
{
}
// overloaded constructor
public MultiPartDataElement(int id, String name)
{
Id = id;
Name = name;
}
@Override
public Object getProperty(int arg0)
{
switch(arg0)
{
case 0:
return Id;
case 1:
return Name;
}
return null;
}
@Override
public int getPropertyCount()
{
return 2;
}
@Override
public void getPropertyInfo(int index, Hashtable arg1, PropertyInfo info)
{
switch(index)
{
case 0:
info.type = PropertyInfo.INTEGER_CLASS;
info.name = "Id";
break;
case 1:
info.type = PropertyInfo.STRING_CLASS;
info.name = "Name";
break;
default:break;
}
}
@Override
public void setProperty(int index, Object value)
{
switch(index)
{
case 0:
Id = Integer.parseInt(value.toString());
break;
case 1:
Name = value.toString();
break;
default:
break;
}
}
}
将对象作为参数发送到.Net Web服务的代码：
public static boolean WriteCaseInfo()
{
boolean status = false;
CaseInformation caseInfo = new CaseInformation();
caseInfo.Id = 2725;
caseInfo.Name = "Craig M. Buck";
caseInfo.SiteListItems = new Vector<MultiPartDataElement>();
caseInfo.SiteListItems.add(new MultiPartDataElement(1, "CMB1"));
caseInfo.SiteListItems.add(new MultiPartDataElement(2, "CMB2"));
String methodName = "WriteCaseInfo";
SoapObject request = new SoapObject(NAMESPACE, methodName);
request.addProperty("caseInfo", caseInfo);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.bodyOut = request;
envelope.dotNet = false;
envelope.encodingStyle = SoapSerializationEnvelope.XSD;
envelope.addMapping(IABaseKSoap2Serializable.NAMESPACE, "MultiPartDataElement", new MultiPartDataElement().getClass());
envelope.addMapping(IABaseKSoap2Serializable.NAMESPACE, "CaseInformation", new CaseInformation().getClass());
HttpTransportSE transport = new HttpTransportSE(WebAPIURL + CaseServicesURL);
transport.debug = true;
transport.setXmlVersionTag("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
try
{
List<HeaderProperty> headers = BuildHeader();
transport.call(NAMESPACE + methodName, envelope, headers);
String requestDump = transport.requestDump;
String soapDump = transport.responseDump;
SoapObject response = (SoapObject) envelope.bodyIn;
if(response != null)
status = new Boolean(response.getProperty(0).toString());
}
catch(Exception e)
{
status = false;
}
return status;
}
从KSOAP请求转储：
<?xml version="1.0" encoding="utf-8"?><v:Envelope xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns:d="http://www.w3.org/2001/XMLSchema" xmlns:c="http://schemas.xmlsoap.org/soap/encoding/" xmlns:v="http://schemas.xmlsoap.org/soap/envelope/"><v:Header /><v:Body><n0:WriteCaseInfo id="o0" c:root="1" xmlns:n0="http://www.medical.draeger.com/webservices/"><caseInfo i:type="n1:CaseInformation" xmlns:n1="http://www.medical.draeger.com/webservices/encodedTypes"><Name i:type="d:string">Craig M. Buck</Name><Id i:type="d:int">2725</Id><SiteListItems i:type="c:Array" c:arrayType="d:anyType[2]"><item i:type="n1:MultiPartDataElement"><Id i:type="d:int">1</Id><Name i:type="d:string">CMB1</Name></item><item i:type="n1:MultiPartDataElement"><Id i:type="d:int">2</Id><Name i:type="d:string">CMB2</Name></item></SiteListItems></caseInfo></n0:WriteCaseInfo></v:Body></v:Envelope>
注意：我认为问题在于，数组是定义为“anyTyp”而不是MultiPartDataElement - ＆gt; ......问题是我在这里做错了什么？
KSOAP的响应转储（通话后）：
SoapException：服务器无法读取请求。 ---＆GT; System.InvalidOperationException：XML文档中存在错误（1,828）。 ---＆GT; System.InvalidCastException：无法将类型为System.Object []的对象分配给类型为Draeger.IT.Platform.Web.WebServices.MultiPartDataElement []
的对象答案 0 :(得分：0)
我遇到过类似的问题。您可能想尝试我的个人解决方案。
http://www.codeproject.com/Tips/222578/Android-access-to-NET-Web-Service-with-object-as-p
答案 1 :(得分：0)
你可以这样做：
int propertyCount = countryDetails.getPropertyCount();
ArrayList list = new ArrayList(propertyCount);
lv_arr = new String[propertyCount];
for (int i = 0; i < propertyCount; i++) {
Object property = countryDetails.getProperty(i);
if (property instanceof SoapObject) {
SoapObject countryObj = (SoapObject) property;
String countryName = countryObj.getProperty("countryName").toString();
list.add(countryName);
}
}