个人笔记--Web service

便民网站上的天气预报手机归属地查询等是如何实现的呢?

实质上这些信息我们的数据库是不存在的只能通过远程调用来获取，要开发这样的功能,需要解决以下方案:

(1)Socket(服务端:开启服务客户端:连接服务)

(2)通过http调用实现(客户端通过HttpClient调用)

(3)Webservice

(4)RMI(远程方法调用)java 调用java C# remoting

cxf框架：

例子：

服务端：

接口：

@WebService  //注解代表它是一个webservice服务
public interface IWeatherService {
    public String getWeatherByCityName(String cityName);
}

实现类：

public class WeatherServiceImpl implements IWeatherService {
public String getWeatherByCityName(String cityName) {
if("北京".equals(cityName)){
return "雾霾";
}else if("深圳".equals(cityName)){
return "晴";
}else if("东莞".equals(cityName)){
return "阴";
}else {
return "其它";
}
}
}

测试类：

注意:服务端的测试不要使用junit。

public class PublisherWebServiceTest {
//引入cxf的api实现webservice服务的发布
public static void main(String[] args) {
//1.创建一个服务的工厂类对象
JaxWsServerFactoryBean factory = new JaxWsServerFactoryBean();
//2.设置服务的访问地址
factory.setAddress("http://localhost:12345/weather");
//3.设置服务的真正的实现类的对象
factory.setServiceBean(new WeatherServiceImpl());
//4.服务webservice服务
factory.create();
}
}

说明书(从下往上读下面图片已经调整正常阅读即可)-- ?wsdl

客户端：

命令行进入要拷贝的目标文件夹有时候有问题可以直接在目标文件夹下shift+右键进入

直接运行显示缺失URI

指令：

测试类：

public class ClientTest {
@Test
public void testWebservice(){
//1.得到proxy代理对象
JaxWsProxyFactoryBean proxy = new  JaxWsProxyFactoryBean();
//2.指定代理的访问服务端的地址        proxy.setAddress("http://localhost:12345/weather?wsdl");
//3.设置代理对那个接口进行代理            proxy.setServiceClass(com.zixue.webservice.IWeatherService.class);
//4.生成上面IWeatherService接口的代理子类对象
IWeatherService iws=(IWeatherService)proxy.create();
//5.调用方法(远程方法调用)
String result = iws.getWeatherByCityName("深圳");
System.out.println(result);
}
}

CXF与Spring整合：

开发步骤：

服务端

(1)创建web工程添加jar包

(2)修改web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>sz06ws01</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<!--加载spring配置文件  -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--CXF框架的核心控制器的加载  -->
<servlet>
<servlet-name>cxf</servlet-name>
<servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>cxf</servlet-name>
<url-pattern>/ws/*</url-pattern>
</servlet-mapping>
</web-app>

(3)添加spring配置文件

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:cxf="http://cxf.apache.org/core"
xmlns:jaxws="http://cxf.apache.org/jaxws"
xmlns:jaxrs="http://cxf.apache.org/jaxrs"
xsi:schemaLocation="            http://www.springframework.org/schema/beans             http://www.springframework.org/schema/beans/spring-beans.xsd
 http://cxf.apache.org/core
http://cxf.apache.org/schemas/core.xsd
 http://cxf.apache.org/jaxws
http://cxf.apache.org/schemas/jaxws.xsd
http://cxf.apache.org/jaxrs
 http://cxf.apache.org/schemas/jaxrs.xsd
">
<!--配置服务端  -->
<!--生成服务的实现类的对象  -->
<bean id="WeatherServiceImpl" class="com.zixue.webservice.WeatherServiceImpl"></bean>
<!--实现天气服务的发布  地址以及注入实现类对象 -->
<jaxws:server address="/weather">
<jaxws:serviceBean>
<ref bean="WeatherServiceImpl"></ref>    
</jaxws:serviceBean>
</jaxws:server>
</beans>

(4)编写服务类

接口和实现类

(5)测试服务端

客户端

(1)创建web工程添加jar包

(2)wsimport 生成本地代码

(3)编写spring配置文件

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:cxf="http://cxf.apache.org/core"
xmlns:jaxws="http://cxf.apache.org/jaxws"
xmlns:jaxrs="http://cxf.apache.org/jaxrs"
xsi:schemaLocation="            http://www.springframework.org/schema/beans             http://www.springframework.org/schema/beans/spring-beans.xsd
http://cxf.apache.org/core
http://cxf.apache.org/schemas/core.xsd
http://cxf.apache.org/jaxws
http://cxf.apache.org/schemas/jaxws.xsd
http://cxf.apache.org/jaxrs
http://cxf.apache.org/schemas/jaxrs.xsd
 ">
<!--  客户端-->
<jaxws:client id="weatherClient" address="http://localhost:8080/sz06ws01/ws/weather?wsdl"        serviceClass="com.zixue.webservice.IWeatherService "
></jaxws:client>
</beans>

(4)测试类

public class ClientTest {
@Test
public void testWs(){
ApplicationContext  ac =new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
IWeatherService  iws = (IWeatherService) ac.getBean("weatherClient");
String result = iws.getWeatherByCityName("深圳");
System.out.println(result);
}
}

个人笔记--Web service

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