axis2创建,部署,发布和访问web service
使用axis2创建web service是一种常用的发布web服务的方式，下面从搭建axis2开发环境开始，写一个简单的web服务，然后再写一个客户端程序，访问我们刚才创建的WEB 服务。
一、搭建axis2环境
? 1.到apache官网下载：http://axis.apache.org/axis2/java/core/download.cgi
? 2.解压下载到的ZIP包
? 3.集成到TOMCAT上：
?? 运行CMD，切换目录到解压包的webapp目录下，该目录下有一个build.xml，运行ant命令，完成之后会在webapp同级目录中生成一个dist目录，将该目录下的axis2.war拷贝到TOMCAT下的webapp目录下，当启动TOMCAT时，会自动解压axis2.war,生成axis2文件夹，axis2/WEB-INF/services目录很重要，以后的web服务都是部署在这个目录下面的。
【如果没有ANT，可以到apache官网下载：http://ant.apache.org/bindownload.cgi，完成后可将解压后的bin目录添加到系统变量path中，这样方便在任意的地方运行ant命令。】
效果如下：
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4.启动TOMCAT服务器，在浏览器中输入http://localhost:8080/axis2/，如果出现下图，则表明环境OK。
二、创建一个简单的web服务
? 1.服务代码如下：
package samples.quickstart.service.pojo;import java.util.HashMap;public class StockQuoteService { private HashMap map = new HashMap(); public double getPrice(String symbol) { Double price = (Double) map.get(symbol); if(price != null){ return price.doubleValue(); } return 42.00; } public void update(String symbol, double price) { map.put(symbol, new Double(price)); }}?2.写完服务代码还需要用XML配置该服务，如下：
<service name="StockQuoteService" scope="application" targetNamespace="http://quickstart.samples/"> <description> Stock Quote Service </description> <messageReceivers> <messageReceiver mep="http://www.w3.org/2004/08/wsdl/in-only" alt="axis2创造,部署,发布和访问web service" width="461" src="/img/2012/06/28/1335124401.png">点击StockQuoteService可以看到该服务的WSDL：
<?xml version="1.0" encoding="UTF-8" ?> - <wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:ns1="http://org.apache.axis2/xsd" xmlns:ns="http://quickstart.samples/xsd" xmlns:wsaw="http://www.w3.org/2006/05/addressing/wsdl" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:tns="http://quickstart.samples/" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" targetNamespace="http://quickstart.samples/"> <wsdl:documentation>StockQuoteService</wsdl:documentation> - <wsdl:types>- <xs:schema attributeFormDefault="qualified" elementFormDefault="qualified" targetNamespace="http://quickstart.samples/xsd">- <xs:element name="update">- <xs:complexType>- <xs:sequence> <xs:element minOccurs="0" name="symbol" nillable="true" type="xs:string" /> <xs:element minOccurs="0" name="price" type="xs:double" /> </xs:sequence> </xs:complexType> </xs:element>- <xs:element name="getPrice">- <xs:complexType>- <xs:sequence> <xs:element minOccurs="0" name="symbol" nillable="true" type="xs:string" /> </xs:sequence> </xs:complexType> </xs:element>- <xs:element name="getPriceResponse">- <xs:complexType>- <xs:sequence> <xs:element minOccurs="0" name="return" type="xs:double" /> </xs:sequence> </xs:complexType> </xs:element> </xs:schema> </wsdl:types>- <wsdl:message name="getPriceRequest"> <wsdl:part name="parameters" element="ns:getPrice" /> </wsdl:message>- <wsdl:message name="getPriceResponse"> <wsdl:part name="parameters" element="ns:getPriceResponse" /> </wsdl:message>- <wsdl:message name="updateRequest"> <wsdl:part name="parameters" element="ns:update" /> </wsdl:message>- <wsdl:portType name="StockQuoteServicePortType">- <wsdl:operation name="getPrice"> <wsdl:input message="tns:getPriceRequest" wsaw:Action="urn:getPrice" /> <wsdl:output message="tns:getPriceResponse" wsaw:Action="urn:getPriceResponse" /> </wsdl:operation>- <wsdl:operation name="update"> <wsdl:input message="tns:updateRequest" wsaw:Action="urn:update" /> </wsdl:operation> </wsdl:portType>- <wsdl:binding name="StockQuoteServiceSoap11Binding" type="tns:StockQuoteServicePortType"> <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" /> - <wsdl:operation name="getPrice"> <soap:operation soapAction="urn:getPrice" style="document" /> - <wsdl:input> <soap:body use="literal" /> </wsdl:input>- <wsdl:output> <soap:body use="literal" /> </wsdl:output> </wsdl:operation>- <wsdl:operation name="update"> <soap:operation soapAction="urn:update" style="document" /> - <wsdl:input> <soap:body use="literal" /> </wsdl:input> </wsdl:operation> </wsdl:binding>- <wsdl:binding name="StockQuoteServiceSoap12Binding" type="tns:StockQuoteServicePortType"> <soap12:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" /> - <wsdl:operation name="getPrice"> <soap12:operation soapAction="urn:getPrice" style="document" /> - <wsdl:input> <soap12:body use="literal" /> </wsdl:input>- <wsdl:output> <soap12:body use="literal" /> </wsdl:output> </wsdl:operation>- <wsdl:operation name="update"> <soap12:operation soapAction="urn:update" style="document" /> - <wsdl:input> <soap12:body use="literal" /> </wsdl:input> </wsdl:operation> </wsdl:binding>- <wsdl:binding name="StockQuoteServiceHttpBinding" type="tns:StockQuoteServicePortType"> <http:binding verb="POST" /> - <wsdl:operation name="getPrice"> <http:operation location="getPrice" /> - <wsdl:input> <mime:content type="text/xml" part="parameters" /> </wsdl:input>- <wsdl:output> <mime:content type="text/xml" part="parameters" /> </wsdl:output> </wsdl:operation>- <wsdl:operation name="update"> <http:operation location="update" /> - <wsdl:input> <mime:content type="text/xml" part="parameters" /> </wsdl:input> </wsdl:operation> </wsdl:binding>- <wsdl:service name="StockQuoteService">- <wsdl:port name="StockQuoteServiceHttpSoap11Endpoint" binding="tns:StockQuoteServiceSoap11Binding"> <soap:address location="http://localhost:8080/axis2/services/StockQuoteService.StockQuoteServiceHttpSoap11Endpoint/" /> </wsdl:port>- <wsdl:port name="StockQuoteServiceHttpSoap12Endpoint" binding="tns:StockQuoteServiceSoap12Binding"> <soap12:address location="http://localhost:8080/axis2/services/StockQuoteService.StockQuoteServiceHttpSoap12Endpoint/" /> </wsdl:port>- <wsdl:port name="StockQuoteServiceHttpEndpoint" binding="tns:StockQuoteServiceHttpBinding"> <http:address location="http://localhost:8080/axis2/services/StockQuoteService.StockQuoteServiceHttpEndpoint/" /> </wsdl:port> </wsdl:service> </wsdl:definitions>??这个WSDL文件对我们写客户端程序访问WEB服务非常有用，后面会用到。
三、部署WEB服务
? 阅读上面的WSDL文件，需要得到关键的几个量，如访问地址，请求结构等。
? 客户端代码如下：
package samples.quickstart.service.pojo;import javax.xml.stream.FactoryConfigurationError;import javax.xml.stream.XMLOutputFactory;import javax.xml.stream.XMLStreamException;import javax.xml.stream.XMLStreamWriter;import org.apache.axiom.om.OMAbstractFactory;import org.apache.axiom.om.OMElement;import org.apache.axiom.om.OMFactory;import org.apache.axiom.om.OMNamespace;import org.apache.axis2.AxisFault;import org.apache.axis2.Constants;import org.apache.axis2.addressing.EndpointReference;import org.apache.axis2.client.Options;import org.apache.axis2.client.ServiceClient;public class StockQuoteServiceClient {private static String toEpr = "http://localhost:8080/axis2/services/StockQuoteService.StockQuoteServiceHttpSoap12Endpoint/";public static void main(String[] args) throws Exception {Options options = new Options();options.setTo(new EndpointReference(toEpr));options.setAction("urn:update");//options.setTransportInProtocol(Constants.TRANSPORT_HTTP);//options.setProperty(Constants.Configuration.ENABLE_REST,Constants.VALUE_TRUE);ServiceClient clientSender = new ServiceClient();//sender.engageModule(Constants.MODULE_ADDRESSING);clientSender.setOptions(options);//先设置一个值clientSender.sendRobust(getUpdateLoad());//再获取该值options.setAction("urn:getPrice");OMElement result = clientSender.sendReceive(getPriceload());//打印完整的responseSystem.out.println(result);OMElement returnElement=result.getFirstElement();System.out.println("The price is "+returnElement.getText());//try {//XMLStreamWriter writer = XMLOutputFactory.newInstance()//.createXMLStreamWriter(System.out);//result.serialize(writer);//writer.flush();//} catch (XMLStreamException e) {//e.printStackTrace();//} catch (FactoryConfigurationError e) {//e.printStackTrace();//}}private static OMElement getUpdateLoad() {OMFactory fac = OMAbstractFactory.getOMFactory();OMNamespace omNs = fac.createOMNamespace("http://quickstart.samples/xsd", "example1");OMElement update=fac.createOMElement("update",omNs);OMElement symbol = fac.createOMElement("symbol", omNs);symbol.setText("yuan");OMElement price = fac.createOMElement("price", omNs);price.setText("12358.421");update.addChild(symbol);update.addChild(price);return update;}private static OMElement getPriceload() {OMFactory fac = OMAbstractFactory.getOMFactory();OMNamespace omNs = fac.createOMNamespace("http://quickstart.samples/xsd", "example1");OMElement getPrice=fac.createOMElement("getPrice",omNs);OMElement symbol = fac.createOMElement("symbol", omNs);symbol.setText("yuan");getPrice.addChild(symbol);return getPrice;}}??程序运行结果如下：
log4j:WARN No appenders could be found for logger (org.apache.axis2.client.Options).
log4j:WARN Please initialize the log4j system properly.
<ns:getPriceResponse xmlns:ns="http://quickstart.samples/xsd"><ns:return>12358.421</ns:return></ns:getPriceResponse>
The price is 12358.421