java 调用wsdl的方式
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:
- 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());
- }
- }
- }
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
- 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
原本的网址是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。