求助,能帮我看看怎么解决这个问题不？

[batsom]

import javax.xml.namespace.QName;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.client.Options;
import org.apache.axis2.rpc.client.RPCServiceClient;
public class hello
{
public static void main(String[] args) throws Exception
{
// 使用RPC方式调用WebService
RPCServiceClient serviceClient = new RPCServiceClient();
Options options = serviceClient.getOptions();
// 指定调用WebService的URL
EndpointReference targetEPR = new EndpointReference(
"http://localhost:8080/axis2/services/ceshi");
options.setTo(targetEPR);
// 指定getGreeting方法的参数值
Object[] opAddEntryArgs = new Object[] {"11"};
// 指定getGreeting方法返回值的数据类型的Class对象
Class[] classes = new Class[] {String.class};
// 指定要调用的getGreeting方法及WSDL文件的命名空间
QName opAddEntry = new QName("http://ws.apache.org/axis2", "getGreeting");
// 调用getGreeting方法并输出该方法的返回值
System.out.println(serviceClient.invokeBlocking(opAddEntry, opAddEntryArgs, classes)[0]);
// 下面是调用getPrice方法的代码，这些代码与调用getGreeting方法的代码类似
classes = new Class[] {int.class};
opAddEntry = new QName("http://ws.apache.org/axis2", "getPrice");
System.out.println(serviceClient.invokeBlocking(opAddEntry, new Object[]{}, classes)[0]);

}


log4j:WARN No appenders could be found for logger (org.apache.axis2.context.AbstractContext).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" java.lang.ExceptionInInitializerError
at org.apache.axis2.description.AxisDescription.<init>(AxisDescription.java:72)
at org.apache.axis2.engine.AxisConfiguration.<init>(AxisConfiguration.java:172)
at org.apache.axis2.deployment.DeploymentEngine.populateAxisConfiguration(DeploymentEngine.java:855)
at org.apache.axis2.deployment.FileSystemConfigurator.getAxisConfiguration(FileSystemConfigurator.java:116)
at org.apache.axis2.context.ConfigurationContextFactory.createConfigurationContext(ConfigurationContextFactory.java:64)
at org.apache.axis2.context.ConfigurationContextFactory.createConfigurationContextFromFileSystem(ConfigurationContextFactory.java:210)
at org.apache.axis2.client.ServiceClient.configureServiceClient(ServiceClient.java:151)
at org.apache.axis2.client.ServiceClient.<init>(ServiceClient.java:144)
at org.apache.axis2.client.ServiceClient.<init>(ServiceClient.java:251)
at org.apache.axis2.rpc.client.RPCServiceClient.<init>(RPCServiceClient.java:48)
at hello.main(hello.java:12)
Caused by: java.lang.NullPointerException
at org.apache.axiom.locator.DefaultOMMetaFactoryLocator.<init>(DefaultOMMetaFactoryLocator.java:72)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at org.apache.axiom.om.OMAbstractFactory.<clinit>(OMAbstractFactory.java:97)
... 11 more

这是什么问题？愁 一天

[冰心的小屋]

你完全可以用 http请求的方式去调用 ws // HTTP GET request private void sendGet() throws Exception { String url = "http://www.google.com/search?q=mkyong"; URL obj = new URL(url); HttpURLConnection con = (HttpURLConnection) obj.openConnection(); // optional default is GET con.setRequestMethod("GET"); //add request header con.setRequestProperty("User-Agent", USER_AGENT); int responseCode = con.getResponseCode(); System.out.println("\nSending 'GET' request to URL : " + url); System.out.println("Response Code : " + responseCode); BufferedReader in = new BufferedReader( new InputStreamReader(con.getInputStream())); String inputLine; StringBuffer response = new StringBuffer(); while ((inputLine = in.readLine()) != null) { response.append(inputLine); } in.close(); //print result System.out.println(response.toString()); }

[batsom]

不是，我在学webservice 不知道怎么处理这个问题