下面我們來看Java如何通過WSDL文件來調用這些web service：
注意，以下的代碼並沒有經過真正的測試，只是說明這些情況，不同版本的Axis相差很大，大家最好以apache網站上的例子為准，這里僅僅用於說明其基本用法。
1,直接AXIS調用遠程的web service
我覺得這種方法比較適合那些高手，他們能直接看懂XML格式的WSDL文件，我自己是看不懂的，尤其我不是專門搞這行的，即使一段時間看懂，后來也就忘記了。直接調用模式如下：
Java代碼
- import java.util.Date;
- import java.text.DateFormat;
- import org.apache.axis.client.Call;
- import org.apache.axis.client.Service;
- import javax.xml.namespace.QName;
- import java.lang.Integer;
- import javax.xml.rpc.ParameterMode;
- public class caClient {
- public static void main(String[] args) {
- try {
- String endpoint = "http://localhost:8080/ca3/services/caSynrochnized?wsdl";
- //直接引用遠程的wsdl文件
- //以下都是套路
- Service service = new Service();
- Call call = (Call) service.createCall();
- call.setTargetEndpointAddress(endpoint);
- call.setOperationName("addUser");//WSDL里面描述的接口名稱
- call.addParameter("userName", org.apache.axis.encoding.XMLType.XSD_DATE,
- javax.xml.rpc.ParameterMode.IN);//接口的參數
- call.setReturnType(org.apache.axis.encoding.XMLType.XSD_STRING);//設置返回類型
- String temp = "測試人員";
- String result = (String)call.invoke(new Object[]{temp});
- //給方法傳遞參數，並且調用方法
- System.out.println("result is "+result);
- }
- catch (Exception e) {
- System.err.println(e.toString());
- }
- }
- }
import java.util.Date;
import java.text.DateFormat;
import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
import javax.xml.namespace.QName;
import java.lang.Integer;
import javax.xml.rpc.ParameterMode;
public class caClient {
public static void main(String[] args) {
try {
String endpoint = "http://localhost:8080/ca3/services/caSynrochnized?wsdl";
//直接引用遠程的wsdl文件
//以下都是套路
Service service = new Service();
Call call = (Call) service.createCall();
call.setTargetEndpointAddress(endpoint);
call.setOperationName("addUser");//WSDL里面描述的接口名稱
call.addParameter("userName", org.apache.axis.encoding.XMLType.XSD_DATE,
javax.xml.rpc.ParameterMode.IN);//接口的參數
call.setReturnType(org.apache.axis.encoding.XMLType.XSD_STRING);//設置返回類型
String temp = "測試人員";
String result = (String)call.invoke(new Object[]{temp});
//給方法傳遞參數，並且調用方法
System.out.println("result is "+result);
}
catch (Exception e) {
System.err.println(e.toString());
}
}
}
2,直接SOAP調用遠程的webservice
這種模式我從來沒有見過，也沒有試過，但是網絡上有人貼出來，我也轉過來
Java代碼
- import org.apache.soap.util.xml.*;
- import org.apache.soap.*;
- import org.apache.soap.rpc.*;
- import java.io.*;
- import java.net.*;
- import java.util.Vector;
- public class caService{
- public static String getService(String user) {
- URL url = null;
- try {
- url=new URL("http://192.168.0.100:8080/ca3/services/caSynrochnized");
- } catch (MalformedURLException mue) {
- return mue.getMessage();
- }
- // This is the main SOAP object
- Call soapCall = new Call();
- // Use SOAP encoding
- soapCall.setEncodingStyleURI(Constants.NS_URI_SOAP_ENC);
- // This is the remote object we're asking for the price
- soapCall.setTargetObjectURI("urn:xmethods-caSynrochnized");
- // This is the name of the method on the above object
- soapCall.setMethodName("getUser");
- // We need to send the ISBN number as an input parameter to the method
- Vector soapParams = new Vector();
- // name, type, value, encoding style
- Parameter isbnParam = new Parameter("userName", String.class, user, null);
- soapParams.addElement(isbnParam);
- soapCall.setParams(soapParams);
- try {
- // Invoke the remote method on the object
- Response soapResponse = soapCall.invoke(url,"");
- // Check to see if there is an error, return "N/A"
- if (soapResponse.generatedFault()) {
- Fault fault = soapResponse.getFault();
- String f = fault.getFaultString();
- return f;
- } else {
- // read result
- Parameter soapResult = soapResponse.getReturnValue ();
- // get a string from the result
- return soapResult.getValue().toString();
- }
- } catch (SOAPException se) {
- return se.getMessage();
- }
- }
- }
import org.apache.soap.util.xml.*;
import org.apache.soap.*;
import org.apache.soap.rpc.*;
import java.io.*;
import java.net.*;
import java.util.Vector;
public class caService{
public static String getService(String user) {
URL url = null;
try {
url=new URL("http://192.168.0.100:8080/ca3/services/caSynrochnized");
} catch (MalformedURLException mue) {
return mue.getMessage();
}
// This is the main SOAP object
Call soapCall = new Call();
// Use SOAP encoding
soapCall.setEncodingStyleURI(Constants.NS_URI_SOAP_ENC);
// This is the remote object we're asking for the price
soapCall.setTargetObjectURI("urn:xmethods-caSynrochnized");
// This is the name of the method on the above object
soapCall.setMethodName("getUser");
// We need to send the ISBN number as an input parameter to the method
Vector soapParams = new Vector();
// name, type, value, encoding style
Parameter isbnParam = new Parameter("userName", String.class, user, null);
soapParams.addElement(isbnParam);
soapCall.setParams(soapParams);
try {
// Invoke the remote method on the object
Response soapResponse = soapCall.invoke(url,"");
// Check to see if there is an error, return "N/A"
if (soapResponse.generatedFault()) {
Fault fault = soapResponse.getFault();
String f = fault.getFaultString();
return f;
} else {
// read result
Parameter soapResult = soapResponse.getReturnValue ();
// get a string from the result
return soapResult.getValue().toString();
}
} catch (SOAPException se) {
return se.getMessage();
}
}
}
3,使用wsdl2java把WSDL文件轉成本地類，然后像本地類一樣使用，即可。
這是像我這種懶人最喜歡的方式，仍然以前面的global weather report為例。
首先 java org.apache.axis.wsdl.WSDL2Java http://www.webservicex.net/globalweather.asmx.WSDL
原本的網址是http://www.webservicex.net/globalweather.asmx?WSDL，中間個各問號，但是Linux下面它不能解析，所以去掉問號，改為點號。
那么就會出現4個文件：
GlobalWeather.java GlobalWeatherLocator.java GlobalWeatherSoap.java GlobalWeatherSoapStub.java
其中GlobalWeatherSoap.java是我們最為關心的接口文件，如果你對RMI等SOAP實現的具體細節不感興趣，那么你只需要看接口文件即可，在使用的時候，引入這個接口即可，就好像使用本地類一樣。