JaxWsDynamicClientFactory createClient空指针

public static Object callService(String wsUrl, String method, Object... arg) {
JaxWsDynamicClientFactory dcf = JaxWsDynamicClientFactory.newInstance();
Object[] res = null;
try {
Client client = dcf.createClient(wsUrl);
res = client.invoke(method, arg);
} catch (Exception e) {
e.printStackTrace();
}
return res[0];
}
其中Client client = dcf.createClient(wsUrl);报空指针错误

http://bbs.csdn.net/topics/390534081/

http://blog.csdn.net/rodjohnsondoctor/article/details/9667851