基于CXF的WebService实例

2014-08-06 星期三 Nesoft

终于有时间可以发一博文了，这段时间不是很忙，可以学点东西，为什么要写呢，因为在前段时间的项目开发中，用到很多网友写的代码和一些新技术点，所以感觉自己也要有分享精神，研究出来的东西就和大家一块分享，不是每个人都要走弯路才能成长的。

WebService的基础知道在这里不说了，WebService的出现使异构平台的互操作成为可能，使用功能模块化，分布化

WebService其实可以理解为一组通信协议集，只要按照这种协议来访问，就可以访问其对应服务，WebService的协议其实就是SOAP协议，发布WebService和编写WebService客户端，只要遵循这种协议就可以，其实现方式也很多：

可以自己构建WSDL描述文件，然后接收Http的请求，然后解析SOAP的消息 做相应调用。XML是SOAP的载体，其实WebService就是对XML的schema和xml元素的操作，目前已经有很多的开源的库可以供我们使用，所以不用再自己去实现最低层的东西。如Axis、CXF、JAX-WS

闲话不多说，直接看实例，说理论对程序员们来说没太大作用，给个Demo，一切都明了了：

以下是个基于CXF库的WebService：

1. 导入需求的库文件。

2. WebService的相关类，直接上代码

服务接口：

<span style="font-family:SimSun;font-size:14px;">package com.test;

import javax.jws.WebResult;
import javax.jws.WebService;


@WebService
public interface HelloWord {

	public @WebResult String sayHello(String name);
	
//	public @WebResult(partName = "userName") String sayUserName(@WebParam(name="user") User user) ;
//	
//	public @WebResult(partName = "o") ListObject findUsers();   
	
}
</span>

实现类：

<span style="font-family:SimSun;font-size:14px;">package com.test;

import java.util.ArrayList;

import javax.jws.WebService;

@WebService
public class HelloWordImpl implements HelloWord {

	public String sayHello(String name) {
		System.out.println("say hello");
		return "hello12 "+" "+name+" ok!";
	}

	public String sayUserName(User user) {
		String name = user.getName() ;
		return "hello " + name ;
	}

	public ListObject findUsers() {
		ArrayList<Object> list = new ArrayList<Object>();
		list.add(new User(1,"AA")) ;
		list.add(new User(2,"BB")) ;
		list.add(new User(3,"CC")) ;
		ListObject o = new ListObject();   
        o.setList(list);  
		return o;
	}
}
</span>

<span style="font-family:SimSun;font-size:14px;"><beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:jaxws="http://cxf.apache.org/jaxws"
	xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd">

	<import resource="classpath:META-INF/cxf/cxf.xml" />
	<import resource="classpath:META-INF/cxf/cxf-extension-soap.xml" />
	<import resource="classpath:META-INF/cxf/cxf-servlet.xml" />

	<jaxws:endpoint 
	  id="helloWorld" 
	  implementor="com.test.HelloWordImpl" 
	  address="/HelloWorld" />
	  
</beans></span>

<span style="font-family:SimSun;font-size:14px;"><?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" 
	xmlns="http://java.sun.com/xml/ns/j2ee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
	http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
	
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>WEB-INF/beans.xml</param-value>
	</context-param>

	<listener>
		<listener-class>
			org.springframework.web.context.ContextLoaderListener
		</listener-class>
	</listener>

	<servlet>
		<servlet-name>CXFServlet</servlet-name>
		<servlet-class>
			org.apache.cxf.transport.servlet.CXFServlet
		</servlet-class>
		<load-on-startup>1</load-on-startup>
	</servlet>

	<servlet-mapping>
		<servlet-name>CXFServlet</servlet-name>
		<url-pattern>/service/*</url-pattern>
	</servlet-mapping>
</web-app>
</span>

5.下面请看wsdl的内容：（http://localhost:8082/WebServiceA/service/HelloWorld?wsdl）

<span style="font-family:SimSun;font-size:14px;">  <?xml version="1.0" encoding="UTF-8" ?> 
- <wsdl:definitions name="HelloWordImplService" targetNamespace="http://test.com/" xmlns:ns1="http://schemas.xmlsoap.org/wsdl/soap/http" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tns="http://test.com/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
- <wsdl:types>
- <xs:schema attributeFormDefault="unqualified" elementFormDefault="unqualified" targetNamespace="http://test.com/" xmlns:tns="http://test.com/" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="sayHello" type="tns:sayHello" /> 
  <xs:element name="sayHelloResponse" type="tns:sayHelloResponse" /> 
- <xs:complexType name="sayHello">
- <xs:sequence>
  <xs:element minOccurs="0" name="arg0" type="xs:string" /> 
  </xs:sequence>
  </xs:complexType>
- <xs:complexType name="sayHelloResponse">
- <xs:sequence>
  <xs:element minOccurs="0" name="return" type="xs:string" /> 
  </xs:sequence>
  </xs:complexType>
  </xs:schema>
  </wsdl:types>
- <wsdl:message name="sayHelloResponse">
  <wsdl:part element="tns:sayHelloResponse" name="parameters" /> 
  </wsdl:message>
- <wsdl:message name="sayHello">
  <wsdl:part element="tns:sayHello" name="parameters" /> 
  </wsdl:message>
- <wsdl:portType name="HelloWord">
- <wsdl:operation name="sayHello">
  <wsdl:input message="tns:sayHello" name="sayHello" /> 
  <wsdl:output message="tns:sayHelloResponse" name="sayHelloResponse" /> 
  </wsdl:operation>
  </wsdl:portType>
- <wsdl:binding name="HelloWordImplServiceSoapBinding" type="tns:HelloWord">
  <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http" /> 
- <wsdl:operation name="sayHello">
  <soap:operation soapAction="" style="document" /> 
- <wsdl:input name="sayHello">
  <soap:body use="literal" /> 
  </wsdl:input>
- <wsdl:output name="sayHelloResponse">
  <soap:body use="literal" /> 
  </wsdl:output>
  </wsdl:operation>
  </wsdl:binding>
- <wsdl:service name="HelloWordImplService">
- <wsdl:port binding="tns:HelloWordImplServiceSoapBinding" name="HelloWordImplPort">
  <soap:address location="http://localhost:8082/WebServiceA/service/HelloWorld" /> 
  </wsdl:port>
  </wsdl:service>
  </wsdl:definitions></span>

<span style="font-family:SimSun;font-size:14px;">package com.test;

import org.apache.cxf.jaxws.JaxWsProxyFactoryBean;

public class HelloWordClient {

	public static void main(String[] args) {
		JaxWsProxyFactoryBean factory = new JaxWsProxyFactoryBean();
		factory.setAddress("http://localhost:8082/WebServiceA/service/HelloWorld?wsdl");
		factory.setServiceClass(HelloWord.class);
		HelloWord helloWord = (HelloWord)factory.create();
		System.out.println(helloWord.sayHello("aa"));		
		System.out.println("~~~~~~~~~~~~~~~~");
	}
}</span>

好，现在大功成了，可以访问了

Demo下载地址为：http://download.csdn.net/detail/tqtihihc/7722125