Android HttpTransportSE请求转储提供NullPointerException_Android_Ksoap2_Ksoap_Httptransportse

Android HttpTransportSE请求转储提供NullPointerException

android

Android HttpTransportSE请求转储提供NullPointerException,android,ksoap2,ksoap,httptransportse,Android,Ksoap2,Ksoap,Httptransportse,我正试图通过Android的Ksoap2访问Android中的webservice SoapObject创建完成后，bodyOut的S.O.p输出所需字符串。但是，当我对我创建的用于调用的HttpTransportSE对象执行requestDump时，会发生NullPointerException。换句话说，传输对象为null。这怎么会发生 Web服务位于此服务与SoapUI配合使用效果非常好。 SoapUI请求： <soap:Envelope xmlns:soap="http://ww

我正试图通过Android的Ksoap2访问Android中的

webservice

SoapObject

创建完成后，

bodyOut

的S.O.p输出所需字符串。但是，当我对我创建的用于调用的

HttpTransportSE

对象执行

requestDump

时，会发生

NullPointerException

。换句话说，传输对象为null。这怎么会发生

Web服务位于

此服务与SoapUI配合使用效果非常好。

SoapUI请求：

<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:v1="http://schemas.icta.lk/xsd/crop/handler/v1/">
   <soap:Header/>
   <soap:Body>
      <v1:getCropDataList>
         <v1:code>ABK</v1:code>
      </v1:getCropDataList>
   </soap:Body>
</soap:Envelope>

<soapenv:Envelope xmlns:soapenv="http://www.w3.org/2003/05/soap-envelope">
   <soapenv:Body>
      <ns1:getCropDataListResponse xmlns:ns1="http://schemas.icta.lk/xsd/crop/handler/v1/">
         <ns1:cropInfo>
            <ns1:name>Ambul Kesel</ns1:name>
            <ns1:price>35.0</ns1:price>
            <ns1:location>Dambulla</ns1:location>
         </ns1:cropInfo>
         <ns1:cropInfo>
            <ns1:name>Ambul Kesel</ns1:name>
            <ns1:price>40.0</ns1:price>
            <ns1:location>Dambulla</ns1:location>
         </ns1:cropInfo>
      </ns1:getCropDataListResponse>
   </soapenv:Body>
</soapenv:Envelope>

public class CropInfo implements KvmSerializable {

 private String name;
 private float price;
 private String location;

 @Override
 public Object getProperty(int arg0) {
  switch (arg0){
  case 0:
   return name;
  case 1:
   return price;
  case 2:
   return location;
  default:
    return null;
  }
 }

 @Override
 public int getPropertyCount() {
  return 3;
 }

 @Override
 public void getPropertyInfo(int arg0, Hashtable arg1, PropertyInfo arg2) {
  switch (arg0){
  case 0:
   arg2.type = PropertyInfo.STRING_CLASS;
   arg2.name = "Name";
   break;
  case 1:
   arg2.type = Float.class;
   arg2.name = "Price";
   break;
  case 2:
   arg2.type = PropertyInfo.STRING_CLASS;
   arg2.name = "Location";
   break;
  default:
    break;
  }

 }

 @Override
 public void setProperty(int arg0, Object arg1) {
  switch(arg0){
  case 0:
   name = arg1.toString();
   break;
  case 1:
   price = Float.parseFloat(arg1.toString());
  case 2:
   location = arg1.toString();
  default:
   break;
  }
 }
}

public void btnOnClick(View v){
     String NAMESPACE = "http://schemas.icta.lk/xsd/crop/handler/v1/";
  String URL = "http://220.247.225.202:9080/services/CropServiceProxy.CropServiceProxyHttpSoap12Endpoint";

  String method_name = "getCropDataList";
  String SOAP_ACTION = "http://schemas.icta.lk/xsd/crop/handler/v1/getCropDataList";

  SoapObject soap_request = new SoapObject(NAMESPACE, method_name);
  soap_request.addProperty("code", "ABK" );

  SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER12);
  envelope.setOutputSoapObject(soap_request);
  envelope.addMapping(NAMESPACE, "cropInfo", CropInfo.class);
  //envelope.dotNet=true;

  Marshal floatMarshal = new MarshalFloat();
  floatMarshal.register(envelope);

  System.out.println("body out : " + envelope.bodyOut.toString());

  //AndroidHttpTransport http_transport = new AndroidHttpTransport(URL);
  HttpTransportSE http_transport  = new HttpTransportSE(URL);
  try {
                    //NullPointerException HERE
   System.out.println(http_transport.requestDump);
   http_transport.call(SOAP_ACTION, envelope);

   //because we should expect a vector, two kinds of prices are given
   Vector<CropInfo> result_array = (Vector<CropInfo>)envelope.getResponse();
   if(result_array != null){
    for (CropInfo current_crop: result_array){
     System.out.println(current_crop.getName());
     System.out.println(Float.toString(current_crop.getPrice()));
    }
   }

  } catch (Exception e) {
   e.printStackTrace();
   answer.setText("error caught");
   //System.out.println(http_transport.responseDump);
  }

  // String result_string[] = (String[])result;

  //answer.setText("returned");

    }

Web服务调用：

<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:v1="http://schemas.icta.lk/xsd/crop/handler/v1/">
   <soap:Header/>
   <soap:Body>
      <v1:getCropDataList>
         <v1:code>ABK</v1:code>
      </v1:getCropDataList>
   </soap:Body>
</soap:Envelope>

<soapenv:Envelope xmlns:soapenv="http://www.w3.org/2003/05/soap-envelope">
   <soapenv:Body>
      <ns1:getCropDataListResponse xmlns:ns1="http://schemas.icta.lk/xsd/crop/handler/v1/">
         <ns1:cropInfo>
            <ns1:name>Ambul Kesel</ns1:name>
            <ns1:price>35.0</ns1:price>
            <ns1:location>Dambulla</ns1:location>
         </ns1:cropInfo>
         <ns1:cropInfo>
            <ns1:name>Ambul Kesel</ns1:name>
            <ns1:price>40.0</ns1:price>
            <ns1:location>Dambulla</ns1:location>
         </ns1:cropInfo>
      </ns1:getCropDataListResponse>
   </soapenv:Body>
</soapenv:Envelope>

public class CropInfo implements KvmSerializable {

 private String name;
 private float price;
 private String location;

 @Override
 public Object getProperty(int arg0) {
  switch (arg0){
  case 0:
   return name;
  case 1:
   return price;
  case 2:
   return location;
  default:
    return null;
  }
 }

 @Override
 public int getPropertyCount() {
  return 3;
 }

 @Override
 public void getPropertyInfo(int arg0, Hashtable arg1, PropertyInfo arg2) {
  switch (arg0){
  case 0:
   arg2.type = PropertyInfo.STRING_CLASS;
   arg2.name = "Name";
   break;
  case 1:
   arg2.type = Float.class;
   arg2.name = "Price";
   break;
  case 2:
   arg2.type = PropertyInfo.STRING_CLASS;
   arg2.name = "Location";
   break;
  default:
    break;
  }

 }

 @Override
 public void setProperty(int arg0, Object arg1) {
  switch(arg0){
  case 0:
   name = arg1.toString();
   break;
  case 1:
   price = Float.parseFloat(arg1.toString());
  case 2:
   location = arg1.toString();
  default:
   break;
  }
 }
}

public void btnOnClick(View v){
     String NAMESPACE = "http://schemas.icta.lk/xsd/crop/handler/v1/";
  String URL = "http://220.247.225.202:9080/services/CropServiceProxy.CropServiceProxyHttpSoap12Endpoint";

  String method_name = "getCropDataList";
  String SOAP_ACTION = "http://schemas.icta.lk/xsd/crop/handler/v1/getCropDataList";

  SoapObject soap_request = new SoapObject(NAMESPACE, method_name);
  soap_request.addProperty("code", "ABK" );

  SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER12);
  envelope.setOutputSoapObject(soap_request);
  envelope.addMapping(NAMESPACE, "cropInfo", CropInfo.class);
  //envelope.dotNet=true;

  Marshal floatMarshal = new MarshalFloat();
  floatMarshal.register(envelope);

  System.out.println("body out : " + envelope.bodyOut.toString());

  //AndroidHttpTransport http_transport = new AndroidHttpTransport(URL);
  HttpTransportSE http_transport  = new HttpTransportSE(URL);
  try {
                    //NullPointerException HERE
   System.out.println(http_transport.requestDump);
   http_transport.call(SOAP_ACTION, envelope);

   //because we should expect a vector, two kinds of prices are given
   Vector<CropInfo> result_array = (Vector<CropInfo>)envelope.getResponse();
   if(result_array != null){
    for (CropInfo current_crop: result_array){
     System.out.println(current_crop.getName());
     System.out.println(Float.toString(current_crop.getPrice()));
    }
   }

  } catch (Exception e) {
   e.printStackTrace();
   answer.setText("error caught");
   //System.out.println(http_transport.responseDump);
  }

  // String result_string[] = (String[])result;

  //answer.setText("returned");

    }

public void btnOnClick（视图v）{
字符串命名空间=”http://schemas.icta.lk/xsd/crop/handler/v1/";
字符串URL=”http://220.247.225.202:9080/services/CropServiceProxy.CropServiceProxyHttpSoap12Endpoint";
字符串方法\u name=“getCropDataList”；
字符串SOAP_ACTION=”http://schemas.icta.lk/xsd/crop/handler/v1/getCropDataList";
SoapObject soap\u request=新的SoapObject（名称空间、方法名称）；
soap_request.addProperty（“代码”、“ABK”）；
SoapSerializationEnvelope=新的SoapSerializationEnvelope（SoapEnvelope.VER12）；
setOutputSoapObject（soap\U请求）；
addMapping（名称空间，“cropInfo”，cropInfo.class）；
//envelope.dotNet=true；
Marshal float Marshal=新的marshall float（）；
收信人登记簿（信封）；
System.out.println（“body out:+envelope.bodyOut.toString（））；
//AndroidHttpTransport http_transport=新的AndroidHttpTransport（URL）；
HttpTransportSE http_transport=新的HttpTransportSE（URL）；
试一试{
//此处为NullPointerException
System.out.println（http_transport.requestDump）；
http_transport.call（SOAP_操作、信封）；
//因为我们应该期望一个向量，所以给出了两种价格
向量结果_数组=（向量）envelope.getResponse（）；
if（结果数组！=null）{
用于（CropInfo当前\u裁剪：结果\u数组）{
System.out.println（当前_crop.getName（））；
System.out.println（Float.toString（current_crop.getPrice（））；
}
}
}捕获（例外e）{
e、 printStackTrace（）；
response.setText（“错误捕获”）；
//System.out.println（http_transport.responseDump）；
}
//字符串结果\u字符串[]=（字符串[]）结果；
//答案：setText（“返回”）；
}

有人能解释一下吗？

您需要将

传输

实例的字段设置为

真

，然后调用

调用（字符串，SoapEnvelope）

方法，以便设置

请求转储

字段：

  HttpTransportSE http_transport = new HttpTransportSE(URL);
  http_transport.debug = true;
  try {
   http_transport.call(SOAP_ACTION, envelope);
   System.out.println(http_transport.requestDump);
  //...

您需要将

Transport

实例的字段设置为

true

，然后调用

call（String，SoapEnvelope）

方法，以便设置

requestDump

字段：

  HttpTransportSE http_transport = new HttpTransportSE(URL);
  http_transport.debug = true;
  try {
   http_transport.call(SOAP_ACTION, envelope);
   System.out.println(http_transport.requestDump);
  //...

谢谢你，丹尼尔。我点错菜了。进行了您建议的更正，我现在在call方法中发现一个XMLPullParser错误。我正在努力解决这个问题。@Daniel dude我发自内心地爱你你从哪里得到这些小事情的信息？？！我问了一个不同的问题，这个问题的答案让我想到了@chamila遇到的一个问题，甚至回答者都忘了提到关于设置

httpTransport.debug=true。。。哇，我被困在那里两个小时了，我现在真的很高兴。请原谅我的长篇大论。再次感谢！！谢谢你，丹尼尔。我点错菜了。进行了您建议的更正，我现在在call方法中发现一个XMLPullParser错误。我正在努力解决这个问题。@Daniel dude我发自内心地爱你你从哪里得到这些小事情的信息？？！我问了一个不同的问题，这个问题的答案让我想到了@chamila遇到的一个问题，甚至回答者都忘了提到关于设置httpTransport.debug=true。。。哇，我被困在那里两个小时了，我现在真的很高兴。请原谅我的长篇大论。再次感谢！！