WebService 之调用天气预报
一:进行主界面布局 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:background="@drawable/ba"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/input_city" /> <EditText android:id="@+id/city" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <Button android:id="@+id/search" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/search"/> <TextView android:id="@+id/result" android:layout_width="wrap_content" android:layout_height="wrap_content"/> </LinearLayout> 二:导入KSOAP包 将ksoap2-android-assembly-2.5.2-jar-with-dependencies.jar包拷贝到libs文件夹下,然后点击右键Build Path –> Configure Build Path...,会出现 然后将添加的包勾上... 三:调用天气预报的WebService1.指定 WebService 的命名空间和调用方法 import org.ksoap2.serialization.SoapObject; private static final String NAMESPACE = "http://WebXml.com.cn/"; private static final String METHOD_NAME = "getWeatherbyCityName"; SoapObject soapObject = new SoapObject(NAMESPACE,METHOD_NAME); SoapObject类的第一个参数表示WebService的命名空间,可以从WSDL文档中找到WebService的命名空间。 2、设置调用方法的参数值,如果没有参数,可以省略,设置方法的参数值的代码如下: rpc.addProperty("theCityName","济宁"); 要注意的是,addProperty方法的第1个参数虽然表示调用方法的参数名,但该参数值并不一定与服务端的WebService类中的方法参数名一致,只要设置参数的顺序一致即可。 3、生成调用Webservice方法的SOAP请求信息。 SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); envelope.bodyOut = soapObject; envelope.dotNet = true; envelope.setOutputSoapObject(soapObject); 创建SoapSerializationEnvelope对象时需要通过SoapSerializationEnvelope类的构造方法设置SOAP协议的版本号。 4、创建HttpTransportsSE对象。 这里不要使用 AndroidHttpTransport ht = new AndroidHttpTransport(URL); 这是一个要过期的类 private static String wsdlUrl = "http://www.webxml.com.cn/webservices/weatherwebservice.asmx"; HttpTransportSE ht = new HttpTransportSE(wsdlUrl); ht.debug = true; 5、使用call方法调用WebService方法 private static String SOAP_ACTION = "http://WebXml.com.cn/getWeatherbyCityName"; ht.call(SOAP_ACTION,envelope); 网上有人说这里的call的第一个参数为null,但是经过我的测试,null是不行的。 6、获得WebService方法的返回结果 有两种方法: a.使用getResponse方法获得返回数据。 private SoapObject detail;
detail =(SoapObject) envelope.getResponse();
b.使用 bodyIn 及 getProperty。 private SoapObject detail; SoapObject result = (SoapObject)envelope.bodyIn; detail = (SoapObject) result.getProperty("getWeatherbyCityNameResult"); 7、 这时候执行会出错,提示没有权限访问网络 需要修改 AndroidManifest.xml 文件,赋予相应权限 简单来说就是增加下面这行配置:<uses-permission android:name="android.permission.INTERNET"></uses-permission> 关于SOAPUtil类的完整代码如下: package bzu.sys.weathersearch.soap; 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; public class SOAPUtil { public static Object doTransport(final String wsdlUrl,final String webMethod,String city) { String nameSpace = "http://WebXml.com.cn/"; SoapObject soapObject = new SoapObject(nameSpace,webMethod); soapObject.addProperty("theCityName",city); System.out.println("city:"+city); SoapSerializationEnvelope serializationEnvelope = new SoapSerializationEnvelope( SoapEnvelope.VER11); serializationEnvelope.bodyOut = soapObject; serializationEnvelope.dotNet = true; serializationEnvelope.setOutputSoapObject(soapObject); HttpTransportSE httpTransportSE = new HttpTransportSE(wsdlUrl); String SOAP_ACTION = "http://WebXml.com.cn/" + webMethod; System.out.println("action:"+SOAP_ACTION); try { httpTransportSE.call(SOAP_ACTION,serializationEnvelope); if (serializationEnvelope.getResponse() != null) { SoapObject result = (SoapObject) serializationEnvelope.getResponse(); System.out.println(result); return result; } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (XmlPullParserException e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } } 四:编写WeatherActivity,进行相应的事件处理 package bzu.sys.weathersearch.web; import org.ksoap2.serialization.SoapObject; import com.lks.weathersearch.soap.SOAPUtil; import android.os.Bundle; import android.app.Activity; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import android.support.v4.app.NavUtils; import android.text.Editable; public class WeatherActivity extends Activity { EditText cityText; Button searchButton; TextView resultView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_weather); cityText = (EditText) this.findViewById(R.id.city); searchButton = (Button) this.findViewById(R.id.search); resultView = (TextView) this.findViewById(R.id.result); searchButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { String city = cityText.getText().toString(); String wsdlUrl = "http://www.webxml.com.cn/webservices/weatherwebservice.asmx"; String webMethod = "getWeatherbyCityName"; SoapObject result = (SoapObject) SOAPUtil.doTransport(wsdlUrl,webMethod,city); resultView.setText(result.getProperty(4).toString()+"n"+result.getProperty(10).toString()); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_weather,menu); return true; } } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |