Java frequently invoked method of WebService interface __java

WebService is a web-based service that implements remote invocation by using the SOAP protocol to implement a WebService and Cross-platform platform that receives and responds to some kind of request from an external system. WebService uses HTTP protocol to transmit data, uses XML format to encapsulate data, SOAP protocol =http protocol +xml data format. The main solution is not to different systems or to invoke the interface returned by the processing data items of a distributed deployment.

Recently, in the project, call the WebService interface commonly used to two methods, I think it is easier to use, recorded here.

The first, with the httpclient request, which is the same as the HTTP request we often use, the result can be a string that returns XML format, and it's easier for us to parse it and get the data we want.

Address: Columns such as HTTP://WWW.XXX.COM/WEATHERWS/WEATHER.ASMX?WSDL

The method called is: Getcityforecastbyzip method parameter is: ZIP

The required jars are as follows:

Commons-codec-1.4.jar

Commons-httpclient-3.1.jar

Jsoup-1.6.2.jar

Commons-logging-1.0.4.jar

Code:

InputStream is = null;

HttpClient client = new HttpClient ();

Postmethod method = new Postmethod ("Www.xxx.com/WeatherWSS/Weather.asmx/GetCityForecastByZIP");

Method.setrequestheader ("Host", "www.xxx.com");

Method.setrequestheader ("Content-type", "application/x-www-form-urlencoded");

Method.setparameter ("ZIP", "90001");

try {

Client.executemethod (method);

is = Method.getresponsebodyasstream ();

Document document = Jsoup.parse (IS, "GBK", "");

System.err.println (document);

catch (Exception e) {

E.printstacktrace ();

}finally{

Method.releaseconnection ();

try {

if (is!=null) {

Is.close ();

}

catch (IOException e) {

E.printstacktrace ();

}

}

My side. The document returns the form of an XML format that can be processed to get the data we want.

As shown in figure:

Second: Using Axis2 to invoke. This axis2 is not universal, and some Web services use Axis2.

Address: Columns such as HTTP://WWW.XXX.COM/WEATHERWS/WEATHER.ASMX?WSDL

The method called is: Getcityforecastbyzip method parameter is: ZIP

The required jars are as follows:

Axis-ant.jar

Axis.jar

Commons-discovery-0.2.jar

Commons-logging-1.0.4.jar

Jaxrpc.jar

Wsdl4j-1.5.1.jar

Code:

try{

Indicates the URL where the service is located

String endpoint = "Http://www.xxx.com/WeatherWS/Weather.asmx";

String targetnamespace = "http://www.xxx.com/WeatherWS/";

String method= "Getcityforecastbyzip";

Create a service invocation (call)

Service service = new service ();

Call call = (call) Service.createcall ()//Create a Call object via service

Set the URL where the service is located

Call.settargetendpointaddress (new Java.net.URL (endpoint));

Call.setoperationname (New QName (targetnamespace, method));

Call.setusesoapaction (TRUE);

Call.addparameter (New QName (targetnamespace, "ZIP"), Org.apache.axis.encoding.XMLType.XSD_STRING, Javax.xml.rpc.ParameterMode.IN);//Interface parameters

Call.setreturnclass (Org.w3c.dom.Element.class);

Call.setreturntype (Org.apache.axis.encoding.XMLType.XSD_STRING);//Set return type

String Path = targetnamespace + method;

Call.setsoapactionuri (path);

Object ret = Call.invoke (new object[] {"90001"});

System.out.println ("xx===" +ret.tostring ());

}catch (Exception e) {

E.printstacktrace ();

}

I use httpclient requests more often. You can also use Wsdl2java to convert a WSDL file to a local service class, which can then be invoked directly.