android怎么调用webservice |
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WebService是一种基于SOAP协议的远程调用标准,通过webservice可以将不同操作系统平台、不同语言、不同技术整合到一块。在Android SDK中并没有提供调用WebService的库,因此,需要使用第三方的SDK来调用WebService。PC版本的WEbservice客户端库非常丰富,例如Axis2,CXF等,但这些开发包对于Android系统过于庞大,也未必很容易移植到Android系统中。因此,这些开发包并不是在我们的考虑范围内。适合手机的WebService客户端的SDK有一些,比较常用的有Ksoap2,可以从http://code.google.com/p/ksoap2-android/downloads/list进行下载;将下载的ksoap2-android-assembly-2.4-jar-with-dependencies.jar包复制到Eclipse工程的lib目录中,当然也可以放在其他的目录里。同时在Eclipse工程中引用这个jar包。 具体调用调用webservice的方法为: (1) 指定webservice的命名空间和调用的方法名,如: SoapObject request =new SoapObject(http://service,”getName”) 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。第二个参数表示要调用的WebService方法名。 (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: Request.addProperty(“param1”,”轮李value”) Request.addProperty(“param2”,”value”) 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类中的方法参侍桐铅数名一致,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。该信息由SoapSerializationEnvelope对象描述,代码为: SoapSerializationEnvelope envelope=new SoapSerializationEnvelope(SoapEnvelope.VER11) Envelope.bodyOut = request 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。该版本号需要根据服务端WebService的版本号设置。在创建SoapSerializationEnvelope对象后,不要忘了设置SOAPSoapSerializationEnvelope类的bodyOut属性,该属性的值就是在第一步创建的SoapObject对象。 (4) 创建HttpTransportsSE对象。通过HttpTransportsSE类的构造方法可以指定WebService的WSDL文档的URL: HttpTransportSE ht=new HttpTransportSE(“http://192.168.18.17:80 /axis2/service/SearchNewsService?wsdl”) (5)使用call方法调用WebService方法,代码: ht.call(null,envelope); Call方法的第一个参数一般为null,第2个参数就是在第3步创建的SoapSerializationEnvelope对象。 (6)使用getResponse方法获得WebService方法的返回结果,代码: SoapObject soapObject =( SoapObject) envelope.getResponse() 以下为简单的实现一个天气查看功能的例子老好: publicclass WebService extends Activity { privatestaticfinal String NAMESPACE ="http://WebXml.com.cn/" // WebService地址 privatestatic String URL ="http://www.webxml.com.cn/ webservices/weatherwebservice.asmx" privatestaticfinal String METHOD_NAME ="getWeatherbyCityName" privatestatic String SOAP_ACTION ="http://WebXml.com.cn/ getWeatherbyCityName" private String weatherToday private Button okButton private SoapObject detail @Override publicvoid onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState) setContentView(R.layout.main) okButton = (Button) findViewById(R.id.ok) okButton.setOnClickListener(new Button.OnClickListener() { publicvoid onClick(View v) { showWeather() } }) } privatevoid showWeather() { String city ="武汉" getWeather(city) } @SuppressWarnings("deprecation") publicvoid getWeather(String cityName) { try { System.out.println("rpc------") SoapObject rpc =new SoapObject(NAMESPACE, METHOD_NAME) System.out.println("rpc"+ rpc) System.out.println("cityName is "+ cityName) rpc.addProperty("theCityName", cityName) AndroidHttpTransport ht =new AndroidHttpTransport(URL) ht.debug =true SoapSerializationEnvelope envelope =new SoapSerializationEnvelope( SoapEnvelope.VER11) envelope.bodyOut = rpc envelope.dotNet =true envelope.setOutputSoapObject(rpc) ht.call(SOAP_ACTION, envelope) SoapObject result = (SoapObject) envelope.bodyIn detail = (SoapObject) result .getProperty("getWeatherbyCityNameResult") System.out.println("result"+ result) System.out.println("detail"+ detail) Toast.makeText(WebService.this, detail.toString(), Toast.LENGTH_LONG).show() parseWeather(detail) return } catch (Exception e) { e.printStackTrace() } } privatevoid parseWeather(SoapObject detail) throws UnsupportedEncodingException { String date = detail.getProperty(6).toString() weatherToday ="今天:"+ date.split("")[0] weatherToday = weatherToday +"\n天气:"+ date.split("")[1] weatherToday = weatherToday +"\n气温:" + detail.getProperty(5).toString() weatherToday = weatherToday +"\n风力:" + detail.getProperty(7).toString() +"\n" System.out.println("weatherToday is "+ weatherToday) Toast.makeText(WebService.this, weatherToday, Toast.LENGTH_LONG).show() } } 具体调用调用webservice的方法为:(1) 指定webservice的命名空间和调用的方法名,如: SoapObject request =new SoapObject(http://service,”getName”) 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。第二个参数表示要调用的WebService方法名。 (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: Request.addProperty(“param1”,”value”) Request.addProperty(“param2”,”value”) 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虚岩即可。 (3) 生成调用Webservice方法的SOAP请求信息。该信息由SoapSerializationEnvelope对象描述,代码为: SoapSerializationEnvelope envelope=new SoapSerializationEnvelope(SoapEnvelope.VER11) Envelope.bodyOut = request 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。该版本号需要根据服务端WebService的版本号设置。在创建SoapSerializationEnvelope对象后,不要忘了设置SOAPSoapSerializationEnvelope类的bodyOut属性,该属性的值就是在第一步创建的SoapObject对象。 (4) 创建HttpTransportsSE对象。通过HttpTransportsSE类的构造方法可以指定WebService的WSDL文档的URL: HttpTransportSE ht=new HttpTransportSE(“SearchNewsService?wsdl”) (5)使用call方法调用WebService方法,代码: ht.call(null,envelope); Call方法的第一个参数一般为null,第2个参数就是氏锋在第3步创建的SoapSerializationEnvelope对象。 (6)使用getResponse方法获得差核御WebService方法的返回结果,代码: SoapObject soapObject =( SoapObject) envelope.getResponse() 以下为简单的实现一个天气查看功能的例子: 复制代码 publicclass WebService extends Activity { privatestaticfinal String NAMESPACE ="" // WebService地址 privatestatic String URL ="weatherwebservice.asmx" privatestaticfinal String METHOD_NAME ="getWeatherbyCityName" privatestatic String SOAP_ACTION ="getWeatherbyCityName" private String weatherToday private Button okButton private SoapObject detail @Override publicvoid onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState) setContentView(R.layout.main) okButton = (Button) findViewById(R.id.ok) okButton.setOnClickListener(new Button.OnClickListener() { publicvoid onClick(View v) { showWeather() } }) } privatevoid showWeather() { String city ="武汉" getWeather(city) } @SuppressWarnings("deprecation") publicvoid getWeather(String cityName) { try { System.out.println("rpc------") SoapObject rpc =new SoapObject(NAMESPACE, METHOD_NAME) System.out.println("rpc"+ rpc) System.out.println("cityName is "+ cityName) rpc.addProperty("theCityName", cityName) AndroidHttpTransport ht =new AndroidHttpTransport(URL) ht.debug =true SoapSerializationEnvelope envelope =new SoapSerializationEnvelope( SoapEnvelope.VER11) envelope.bodyOut = rpc envelope.dotNet =true envelope.setOutputSoapObject(rpc) ht.call(SOAP_ACTION, envelope) SoapObject result = (SoapObject) envelope.bodyIn detail = (SoapObject) result .getProperty("getWeatherbyCityNameResult") System.out.println("result"+ result) System.out.println("detail"+ detail) Toast.makeText(WebService.this, detail.toString(), Toast.LENGTH_LONG).show() parseWeather(detail) return } catch (Exception e) { e.printStackTrace() } } privatevoid parseWeather(SoapObject detail) throws UnsupportedEncodingException { String date = detail.getProperty(6).toString() weatherToday ="今天:"+ date.split("")[0] weatherToday = weatherToday +"\n天气:"+ date.split("")[1] weatherToday = weatherToday +"\n气温:" + detail.getProperty(5).toString() weatherToday = weatherToday +"\n风力:" + detail.getProperty(7).toString() +"\n" System.out.println("weatherToday is "+ weatherToday) Toast.makeText(WebService.this, weatherToday, Toast.LENGTH_LONG).show() } } 欢迎分享,转载请注明来源:内存溢出 原文地址:https://outofmemory.cn/yw/8238250.html |
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