EJB3 学习笔记八

开发ejb模型的web服务

Web属于行业规范,服务可以跨平台和语言

Ejb属于java平台规范

Javaee为web service 提供了两种不同编程模型:

Ejb容器模型

Web容器模型

示例代码如下:

/**

 * Copyright (C) 2016

 *

 * FileName:OrderServiceBean.java

 *

 * Author:<ahref="mailto:zhenhuayue@sina.com">Retacn</a>

 *

 * CreateTime: 2016-7-24

 */

// Package Information

package cn.yue.ejb.wsservice.impl;

import java.util.ArrayList;

import java.util.List;

import javax.ejb.Remote;

import javax.ejb.Stateless;

import javax.jws.WebService;

import cn.yue.ejb.entity.Order;

importcn.yue.ejb.wsservice.OrderService;

/**

 * 订单的业务操作

 *

 * @version

 * @Description:

 * @author <ahref="mailto:zhenhuayue@sina.com">Retacn</a>

 * @since 2016-7-24

 */

// 指定所有方法

@WebService(

// 命名空间

        targetNamespace = "http://ws.retacn.cn",

// 端口类型

        name = "OrderService",

// 服务名称

        serviceName = "OrderServiceBean")

@Stateless

@Remote(OrderService.class)

public class OrderServiceBeanimplements OrderService {

   // 可以使用 @WebMethod来单独指定方法

   // @WebMethod

   @Override

   public String getUserName(String name) {

       return "retacn";

   }

   @Override

   public Order getOrder(String orderId) {

       return new Order(orderId, "测试订单");

   }

   @Override

   public List<Order> getOrders() {

       List<Order> orders = new ArrayList<Order>();

       orders.add(new Order("001", "测试订单一"));

       orders.add(new Order("002", "测试订单二"));

       return orders;

   }

}

可以通过以下地址查看wadl

http://localhost:9990/console/App.html#webservice-runtime

Web服务的客户端

导入

利用webservice客户端生成工具生成辅助类

Cmd

Cd e:/insallPackage/javaweb/webService/apache-cxf-3.1.1/bin

wsdl2java -d 生成文件目录

http://localhost:8080/HelloWorldEJB/OrderServiceBean/OrderService?wsdl

使用辅肋类调用webservice,示例代码如下:

/**

 * Copyright (C) 2016

 *

 * FileName:WsClient.java

 *

 * Author:<a href="mailto:zhenhuayue@sina.com">Retacn</a>

 *

 * CreateTime: 2016-7-24

 */

// Package Information

package cn.retacn.ws.test;

import java.util.List;

import cn.retacn.ws.Order;

import cn.retacn.ws.OrderService;

import cn.retacn.ws.OrderServiceBean;

public class WsClient {

   /**

    * @param args

    */

   public static void main(String[] args) {

       OrderServiceBean orderServiceBean = new OrderServiceBean();

       OrderService orderService = orderServiceBean.getOrderServicePort();

       Order order = orderService.getOrder("123");

       System.out.println("order: " + order.getOrderId() +"---" + order.getOrderName());

       String userName = orderService.getUserName("123");

       System.out.println("用户名为:" + userName);

       List<Order> orders =orderService.getOrders();

       for (Order order2 : orders) {

            System.out.println("---"+ order2.getOrderId() + ":" + order2.getOrderName());

       }

   }

}

Ejb实现拦截器的功能

1 导入jboss-interceptors-api_1.1_spec-1.0.0.Final.jar

2 编写自定义拦截器

3 在bean中添加@Interceptors(***.class)