activiti designer源码的研究(一) 采用Axis2调用Webservice

最近由于项目的需要，需要对eclipse中的Eclipse Activiti designer插件进行扩充，使其能够调用的webservice，但是遇到了classNotFoundException，我的方法如下：

<1> 在org.activiti.designer.gui中添加了调用webserviced的类

<2> 在org.activiti.designer.lib中添加了axis2的jar

<3> 在org.activiti.designer.lib的manifest.mf中export了axis2

<4>在org.activiti.designer.gui中manifest.mf中的dependency中添加了lib

在eclipse中测试run eclipse application时，可以运行,但是导出之后放到rcp rich client中时，会发现访问不到类，说明，不能访问到第三方的jar包

解决方法：把axis2放到某个目录下，然后直接加载，然后使用反射调用webservice

public class ServiceUtil {
//object(Array)转化为String
 public String makeArrayObject(Object array) {
List tem = new ArrayList();
for (int i = 0; i < Array.getLength(array); i++) {
tem.add(Array.get(array, i));
}

for(int i=0;i<tem.size();i++)
System.out.println(tem.get(i));

return String.valueOf(tem.get(0));
}

public String getService(String socketAddress) {
String result = null;

URL[] urls = new URL[] {};
MyClassLoader classLoader = new MyClassLoader(urls, null);

try {
classLoader.addJar(new File("c:/jar/AXIS2.jar").toURI().toURL());

Class rpcserviceclient = classLoader.loadClass("org.apache.axis2.rpc.client.RPCServiceClient");
Object rpcserviceclientInstance = rpcserviceclient.newInstance();

Method getoptions = rpcserviceclient.getMethod("getOptions", null);
Object c = getoptions.invoke(rpcserviceclientInstance, null);

Class options = c.getClass();

Class endpointreference = classLoader.loadClass("org.apache.axis2.addressing.EndpointReference");
Constructor endpointreferenceCons = endpointreference.getConstructor(String.class);
Object endpointreferenceInstance = endpointreferenceCons.newInstance(socketAddress+"ServiceUtil");
Method setTo = options.getMethod("setTo", endpointreferenceInstance.getClass());
setTo.invoke(c, endpointreferenceInstance);

Object[] objects = new Object[] {};
Class<?>[] classes = new Class[] { String.class };
QName qname = new QName("http://servicemanagement/", "getServiceInfo");

Method invokebloking = rpcserviceclient.getMethod("invokeBlocking",qname.getClass(),objects.getClass(),classes.getClass());
Object obj = invokebloking.invoke(rpcserviceclientInstance,qname,objects,classes);

result =  makeArrayObject(obj);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
}

 class MyClassLoader extends URLClassLoader {

public MyClassLoader(URL[] urls) {
super(urls);
}

public MyClassLoader(URL[] urls, ClassLoader parent) {
super(urls, parent);
}

public void addJar(URL url) {
this.addURL(url);
}

}

public static void main(String[]args){
String str = new ServiceUtil().getService("http://localhost:8010/ServiceUtil");
System.out.println(str);
}
}