使用 CXF 做 webservice 簡(jiǎn)單例子

2019-11-11 03:16:21

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一、對(duì)比Axis2和CXF

jws的發(fā)布對(duì)java webservice框架產(chǎn)生了巨大的影響，經(jīng)過大浪淘沙，目前java開發(fā)webservice的框架主要包括axis2和cxf。

axis2和cxf都是apache旗下的產(chǎn)品，但是其目的不同，導(dǎo)致webservice開發(fā)方法也不一樣。兩個(gè)框架都得到了開發(fā)者的支持。有必要對(duì)二者進(jìn)行以下對(duì)比。


	Axis2	CXF
目標(biāo)	WebService引擎	簡(jiǎn)易的SOA框架，可以作為ESB
ws* 標(biāo)準(zhǔn)支持	不支持WS-Policy	WS-Addressing，WS-Policy， WS-RM， WS-Security，WS-I Basic PRofile
數(shù)據(jù)綁定支持	xmlBeans、JiBX、JaxMe 、JaxBRI、ADB	JAXB, Aegis, XMLBeans, SDO, JiBX
spring集成	不支持	支持
應(yīng)用集成	困難	簡(jiǎn)單
多語言	支持C/C++	不支持
部署	web應(yīng)用	嵌入式
服務(wù)監(jiān)控和管理	支持	不支持

結(jié)論：

如果希望以一種一致的方式實(shí)現(xiàn)webservice，特別是有跨語言的需求時(shí)，應(yīng)該使用Axis2如果需要在現(xiàn)有的java程序（包括web應(yīng)用）中增加webservice支持，應(yīng)該使用CXF

二、編寫服務(wù)類

從Java6開始，WebService API從Java EE復(fù)制到了Java SE。并遵循了一系列的標(biāo)準(zhǔn)，比如JSR181(Web Service 元數(shù)據(jù)），JSR224（JAX-WS,基于XML的WebService API），JSR67（SAAJ，SOAP附件標(biāo)準(zhǔn)）等。并分別定義到j(luò)avax.jws, javax.xml.ws 和 javax.xml.soap包中。

JSR181支持使用標(biāo)注（annotation）來定義WebService。在javax.jws中主要的標(biāo)注類包括：


標(biāo)注	說明
WebService	將 Java 類標(biāo)記為實(shí)現(xiàn) Web Service，或者將 Java 接口標(biāo)記為定義 Web Service 接口
WebMethod	定制Web Service方法
WebParam	定制Web Service方法的參數(shù)
WebResult	定制Web Service方法的返回值
SOAPBinding	指定WebService的SOAP映射樣式

使用標(biāo)注可以在不改變代碼邏輯的前提下讓外部代碼能夠獲得更多的元數(shù)據(jù)。下面就用javax.jws定義的標(biāo)注來聲明一個(gè)WebServicepom增加CXF依賴 <dependencies> <dependency> <groupId>org.apache.cxf</groupId> <artifactId>apache-cxf</artifactId> <version>${cxf.version}</version> <type>pom</type> </dependency> </dependencies> <properties> <cxf.version>2.2.4</cxf.version> </properties>增加接口服務(wù)packagecom.dogiant.demo;importjavax.jws.WebService;@WebServicepublicinterfaceCXFDemo { publicString sayHello(Stringfoo);}實(shí)現(xiàn)服務(wù)類packagecom.dogiant.demo;importjavax.jws.WebService;@WebService(endpointInterface ="com.dogiant.demo.CXFDemo", serviceName ="cxfDemo")publicclassCXFDemoImplimplementsCXFDemo { @Override publicString sayHello(Stringfoo) { return"hello "+foo; }}三、以endpoint發(fā)布

到目前為止，使用的都是標(biāo)準(zhǔn)Java SE中的東西。下面要開始依賴CXF實(shí)現(xiàn)一些功能。

首先是服務(wù)的發(fā)布。CXF不僅支持通過Web容器發(fā)布WebService，也可以在嵌入式代碼中通過jetty發(fā)布WebService。

下面的測(cè)試類包含了發(fā)布服務(wù)和客戶端調(diào)用的代碼： <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency>packagecom.dogiant.demo;importjavax.xml.ws.Endpoint;importorg.apache.cxf.jaxws.JaxWsProxyFactoryBean;importorg.junit.Assert;importjunit.framework.TestCase;publicclassTestEndpointextendsTestCase { privatestaticfinalStringADDRESS= "http://localhost:9000/cxfdemo" ; protectedvoidsetUp()throwsException { super.setUp(); System.out.println("Starting Server"); CXFDemoImpldemo= new CXFDemoImpl(); Endpoint.publish(ADDRESS,demo); System.out.println("Start success"); } publicvoidtestSayHello() { JaxWsProxyFactoryBeanfactory= new JaxWsProxyFactoryBean(); factory.setServiceClass(CXFDemo.class); factory.setAddress(ADDRESS); CXFDemoclient= (CXFDemo)factory.create(); Assert.assertEquals(client.sayHello("foo"),"hello foo"); }}信息: Creating Service {http://demo.dogiant.com/}CXFDemoImplService from class com.dogiant.demo.CXFDemo2016-3-28 10:49:48 org.apache.cxf.endpoint.ServerImpl initDestination信息: Setting the server's publish address to be http://localhost:9000/cxfdemo2016-3-28 10:49:48 org.mortbay.log.Slf4jLog info信息: Logging to org.slf4j.impl.JDK14LoggerAdapter(org.mortbay.log) via org.mortbay.log.Slf4jLog2016-3-28 10:49:48 org.mortbay.log.Slf4jLog info信息: jetty-6.1.212016-3-28 10:49:48 org.mortbay.log.Slf4jLog info信息: Started SelectChannelConnector@0.0.0.0:9000Start success2016-3-28 10:49:48 org.apache.cxf.service.factory.ReflectionServiceFactoryBean buildServiceFromClass信息: Creating Service {http://demo.dogiant.com/}CXFDemoService from class com.dogiant.demo.CXFDemo四、在webapp中發(fā)布web.xml<?xmlversion="1.0"encoding="UTF-8"?><web-appxmlns="http://java.sun.com/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd " version="2.5"> <display-name>spring-cxf-demo</display-name> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:spring/spring-config*.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> </servlet> <servlet-mapping> <servlet-name>CXFServlet</servlet-name> <url-pattern>/services/*</url-pattern> </servlet-mapping></web-app>spring-config-cxf.xml<?xmlversion="1.0"encoding="UTF-8"?><beansxmlns="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://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <importresource="classpath:META-INF/cxf/cxf.xml"/> <importresource="classpath:META-INF/cxf/cxf-extension-soap.xml"/> <importresource="classpath:META-INF/cxf/cxf-servlet.xml"/> <jaxws:endpointid="cxfDemo"implementor="com.dogiant.demo.CXFDemoImpl" address="/cxfdemo"/></beans>http://localhost:8080/services/cxfdemo <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> //此處不注意會(huì)報(bào)錯(cuò) </dependency>http://localhost:8080/services/cxfdemo?wsdl五、客戶端packagecom.dogiant.demo;importorg.apache.cxf.jaxws.JaxWsProxyFactoryBean;publicclassCXFClient { publicstaticvoidmain(String[]args) { JaxWsProxyFactoryBeanproxy= new JaxWsProxyFactoryBean(); proxy.setServiceClass(CXFDemo.class); proxy.setAddress("http://localhost:8080/services/cxfdemo"); CXFDemocxf= (CXFDemo)proxy.create(); System.out.println(cxf.sayHello("haha")); }}與spring集成<?xmlversion="1.0"encoding="UTF-8"?><beansxmlns="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://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <beanid="clientFactory"class="org.apache.cxf.jaxws.JaxWsProxyFactoryBean"> <propertyname="serviceClass"value="com.dogiant.demo.CXFDemo"/> <propertyname="address"value="http://localhost:8080/services/cxfdemo"/> </bean> <beanid="client"class="com.dogiant.demo.CXFDemo"factory-bean="clientFactory" factory-method="create"/></beans>測(cè)試用例packagecom.dogiant.demo;importorg.junit.Test;importorg.junit.runner.RunWith;importorg.springframework.beans.factory.annotation.Autowired;importorg.springframework.test.context.ContextConfiguration;importorg.springframework.test.context.junit4.SpringJUnit4ClassRunner;@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations = {"classpath:spring/spring-config-cxf-client.xml"})publicclassTestCXFClient { @Autowired privateCXFDemoclient; @Test publicvoidtest() { System.out.println(client.sayHello("hello")); }}

附：

cxf官網(wǎng) February 8, 2016 - Apache CXF 3.1.5/3.0.8 released!http://cxf.apache.org/index.html

cxf-demo例子

https://github.com/dogiant/cxf-demo

cxf官網(wǎng) February 8, 2016 - Apache CXF 3.1.5/3.0.8 released!http://cxf.apache.org/index.html

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