我正在构建一个 android 应用程序,我希望它使用 SOAP API 请求和响应。 我目前正在使用我得到的一个例子,但这个例子不起作用,我已经问过房东,但他没有回复。 所以这是代码;
Button bt;
String TAG = "Response";
SoapPrimitive resultString;
EditText celsius;
String getCel;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bt = (Button) findViewById(R.id.bt);
celsius = (EditText) findViewById(R.id.cel);
//add button listener
bt.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
getCel = celsius.getText().toString();
AsyncCallWS task = new AsyncCallWS();
task.execute();
}
});
}
private class AsyncCallWS extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
Log.i(TAG, "onPreExecute");
}
@Override
protected Void doInBackground(Void... params) {
Log.i(TAG, "doInBackground");
Calculate();
return null;
}
@Override
protected void onPostExecute(Void result) {
Log.i(TAG, "onPostExecute");
Toast.makeText(MainActivity.this, "Response" + resultString.toString(), Toast.LENGTH_LONG).show();
}
}
public void Calculate() {
String SOAP_ACTION = "http://www.w3schools.com/webservices/CelsiusToFahrenheit";
String METHOD_NAME = "CelsiusToFahrenheit";
String NAMESPACE = "http://www.w3schools.com/webservices/";
String URL = "http://www.w3schools.com/webservices/tempconvert.asmx";
try {
SoapObject Request = new SoapObject(NAMESPACE, METHOD_NAME);
Request.addProperty("Celsius", getCel);
SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
soapEnvelope.dotNet = true;
soapEnvelope.setOutputSoapObject(Request);
HttpTransportSE transport = new HttpTransportSE(URL);
transport.call(SOAP_ACTION, soapEnvelope);
resultString = (SoapPrimitive) soapEnvelope.getResponse();
Log.i(TAG, "Result Celsius: " + resultString);
} catch (Exception ex) {
Log.e(TAG, "Error: " + ex.getMessage());
}
我收到一条错误消息:尝试在空对象引用上调用虚拟方法“java.lang.String org.ksoap2.serialization.SoapPrimitive.toString()”
最佳答案
您的网址有误,已更改。 试试这个:
String SOAP_ACTION = "http://www.w3schools.com/xml/CelsiusToFahrenheit";
String METHOD_NAME = "CelsiusToFahrenheit";
String NAMESPACE = "http://www.w3schools.com/xml/";
String URL = "http://www.w3schools.com/xml/tempconvert.asmx";
希望对你有用。让我知道
关于android - 为 android studio 编写 SOAP API,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39074877/