如何写一个WebService

1、编写WebService服务端

        1.1、创建一个接口

                @WebService

                public interface WebServiceService {

                         String sayHello(String name);

                  }

        1.2、写一个实现类

        @WebService

        public class WebServiceServiceImpl implements WebServiceService {

         @Override

         public String sayHello(@WebParam(name = "name") String name) {

                 Date date = new Date();

                 SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

                 String hello = df.format(date) + "," + name + "call the inferface!";

                 return hello;

                 }

        }

        1.3、发布一个WebService

        String address = "http://127.0.0.1:8083/WebServiceWithServlet";

        Endpoint.publish(address, new WebServiceServiceImpl());

        System.out.println("使用WebServiceCalledByServlet发布webservice成功!");

2、通过cxf来与服务端进行通信

      2.1、在pom中导入

                 org.apache.cxf

                 cxf-rt-frontend-jaxws

                 3.1.12

                 org.apache.cxf

                 cxf-rt-transports-http

                 3.1.12

        2.2、编写代码与服务端进行通信

        //采用动态工厂方式 不需要指定服务接口

        JaxWsDynamicClientFactory dcf = JaxWsDynamicClientFactory.newInstance();

        Client client = dcf.createClient("http://127.0.0.1:8083/WebServiceWithServlet?wsdl");         Object[] result = client.invoke("sayHello", "admin");

        System.out.println(result[0]);