下面我们来看Java如何通过WSDL文件来调用这些web service:

注意,以下的代码并没有经过真正的测试,只是说明这些情况,不同版本的Axis相差很大,大家最好以apache网站上的例子为准,这里仅仅用于说明其基本用法。

1,直接AXIS调用远程的web service

我觉得这种方法比较适合那些高手,他们能直接看懂XML格式的WSDL文件,我自己是看不懂的,尤其我不是专门搞这行的,即使一段时间看懂,后来也就忘记了。直接调用模式如下:

1. import java.util.Date;   
2. import java.text.DateFormat;   
3. import org.apache.axis.client.Call;   
4. import org.apache.axis.client.Service;   
5. import javax.xml.namespace.QName;   
6. import java.lang.Integer;   
7. import javax.xml.rpc.ParameterMode;   
8.     
9. public class caClient {   
10.                
11. public static void main(String[] args) {   
12.     
13. try {   
14. "http://localhost:8080/ca3/services/caSynrochnized?wsdl";   
15. //直接引用远程的wsdl文件   
16. //以下都是套路    
17. new Service();   
18.                      Call call = (Call) service.createCall();   
19.                      call.setTargetEndpointAddress(endpoint);   
20. "addUser");//WSDL里面描述的接口名称   
21. "userName", org.apache.axis.encoding.XMLType.XSD_DATE,   
22. //接口的参数   
23. //设置返回类型     
24. "测试人员";   
25. new Object[]{temp});   
26. //给方法传递参数,并且调用方法   
27. "result is "+result);   
28.               }   
29. catch (Exception e) {   
30.                      System.err.println(e.toString());   
31.               }   
32.        }   
33. }
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";
                     //直接引用远程的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里面描述的接口名称
                     call.addParameter("userName", org.apache.axis.encoding.XMLType.XSD_DATE,
                                   javax.xml.rpc.ParameterMode.IN);//接口的参数
                     call.setReturnType(org.apache.axis.encoding.XMLType.XSD_STRING);//设置返回类型  
                     String temp = "测试人员";
                     String result = (String)call.invoke(new Object[]{temp});
                     //给方法传递参数,并且调用方法
                     System.out.println("result is "+result);
              }
              catch (Exception e) {
                     System.err.println(e.toString());
              }
       }
}

2,直接SOAP调用远程的webservice
这种模式我从来没有见过,也没有试过,但是网络上有人贴出来,我也转过来

Java代码

 

1. import org.apache.soap.util.xml.*;   
2. import org.apache.soap.*;   
3. import org.apache.soap.rpc.*;   
4.     
5. import java.io.*;   
6. import java.net.*;   
7. import java.util.Vector;   
8.     
9. public class caService{   
10. public static String getService(String user) {   
11. null;   
12. try {   
13. new URL("http://192.168.0.100:8080/ca3/services/caSynrochnized");   
14. catch (MalformedURLException mue) {   
15. return mue.getMessage();   
16.          }   
17. // This is the main SOAP object   
18. new Call();   
19. // Use SOAP encoding   
20.        soapCall.setEncodingStyleURI(Constants.NS_URI_SOAP_ENC);   
21. // This is the remote object we're asking for the price   
22. "urn:xmethods-caSynrochnized");   
23. // This is the name of the method on the above object   
24. "getUser");   
25. // We need to send the ISBN number as an input parameter to the method   
26. new Vector();   
27.     
28. // name, type, value, encoding style   
29. new Parameter("userName", String.class, user, null);   
30.        soapParams.addElement(isbnParam);   
31.        soapCall.setParams(soapParams);   
32. try {   
33. // Invoke the remote method on the object   
34. "");   
35. // Check to see if there is an error, return "N/A"   
36. if (soapResponse.generatedFault()) {   
37.               Fault fault = soapResponse.getFault();   
38.              String f = fault.getFaultString();   
39. return f;   
40. else {   
41. // read result   
42.              Parameter soapResult = soapResponse.getReturnValue ();   
43. // get a string from the result   
44. return soapResult.getValue().toString();   
45.           }   
46. catch (SOAPException se) {   
47. return se.getMessage();   
48.        }   
49.     }   
50. }  
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文件转成本地类,然后像本地类一样使用,即可。
这是像我这种懒人最喜欢的方式,仍然以前面的global weather report为例。
首先   java org.apache.axis.wsdl.WSDL2Java http://www.webservicex.net/globalweather.asmx.WSDL 中间个各问号,但是Linux下面它不能解析,所以去掉问号,改为点号。
那么就会出现4个文件:
GlobalWeather.java  GlobalWeatherLocator.java  GlobalWeatherSoap.java  GlobalWeatherSoapStub.java
其中GlobalWeatherSoap.java是我们最为关心的接口文件,如果你对RMI等SOAP实现的具体细节不感兴趣,那么你只需要看接口文件即可,在使用的时候,引入这个接口即可,就好像使用本地类一样。