WebService小结

  平台无关：XML是WebService中表示数据的基本格式，而XML是无关平台的。
  WebService创建一根单独的线程，不占用主题程序线程，使WebService服务更加快捷。
 
 

  在src目录下创建一个META-INF目录
                                 在META-INF目录下创建xfire目录
                                 在xfire目录下创建services.xml文件
  services.xml配置如下：
                  <service>
          <name>......</name>//指定当前服务的名称（自定义）
          <namespace>....../(<name></name>标签里的服务名称)</namespace>//指定当前服务的名称空间
          <serviceClass>
                                    //接口
                         </serviceClass>
                         <implementationClass>
                                    //接口实现类
                         </implementationClass>
                  </service>
   web.xml配置如下：
   /*
     *....原有的servlet配置
     */

   //XFireServlet配置
                  <servlet>
            <servlet-name>XFireServlet</servlet-name>
                           <servlet-class>
                                   org.codehaus.xfire.transport.http.XFireConfigurableServlet
                           </servlet-class>
                  </servlet>
                  <servlet-mapping>
                           <servlet-name>XFireServlet</servlet-name>
            <url-pattern>/servlet/XFireServlet/*</url-pattern>   //处理客户端访问有XFire处理路径
   </servlet-mapping>
   <servlet-mapping>
            <servlet-name>XFireServlet</servlet-name>
            <url-pattern>/services/*</url-pattern>   //处理客户端访问有XFire处理路径
   </servlet-mapping>

//ClassServlet代码
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.codehaus.xfire.XFire;
import org.codehaus.xfire.XFireFactory;
import org.codehaus.xfire.client.XFireProxyFactory;
import org.codehaus.xfire.service.Service;
import org.codehaus.xfire.service.binding.ObjectServiceFactory;

import entity.Student;

import serv.IClass;

public class ClassServlet extends HttpServlet {
 private static final long serialVersionUID = 7843686826225848696L;
 
 public void doPost(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
  // 获取会话
  HttpSession session = request.getSession();

  // 班级ID
  int classId = Integer.parseInt(request.getParameter("classId"));
  //测试获取的数据
  System.out.println(classId);
  
  // 创建服务的元数据
  Service serviceModel = new ObjectServiceFactory()
    .create(IClass.class);
  System.out.println("返回了服务的模型.");

  // 创建服务的代理
  XFire xfire = XFireFactory.newInstance().getXFire();
  XFireProxyFactory factory = new XFireProxyFactory(xfire);
  // 服务的地址Servlet名称与services.xml中的name对应
  String serviceUrl = "http://localhost:8080/WebServiceTest/services/classSer";
  IClass newClass = null;
  try {
    //返回接口实现类的对象
   newClass = (IClass) factory.create(serviceModel, serviceUrl);
  } catch (MalformedURLException e) {
   e.printStackTrace();
  }
  
  // 调用服务
  List<Student> list = null;
  try {
   list = newClass.getClassByClassId(classId);
  } catch (Exception e) {
   e.printStackTrace();
  }
  session.setAttribute("list", list);
  request.getRequestDispatcher("show.jsp").forward(request,response);
 }
}