Axis2是全新设计的，在2004年的“Axis峰会”上，大家决定采用新的架构来让Axis更加的富有弹性，更有效率，并且更加的可配置。Axis2现在具有的一些feature: Speed Low memory foot PRint AXIOM - AXis Object Model Hot Deployment Asynchronous Web Services MEP Support - Message Exchange Patterns Flexibility Stability Component-oriented deployment Transport framework WSDL support
有些feature现在看不懂，还是先动手做一下，感性熟悉一下吧
第一步：下载AXIS2。http://ws.apache.org/axis2/download.cgi。很有趣，在apache的Web Service 的Project目录下面还看不到AXIS2。要下那个binary的版本，因为里面有例程。
public class MyService { public OMElement echo(OMElement element) throws xmlStreamException { //Praparing the OMElement so that it can be attached to another OM Tree. //First the OMElement should be completely build in case it is not fully built and still //some of the xml is in the stream. element.build(); //Secondly the OMElement should be detached from the current OMTree so that it can be attached //some other OM Tree. Once detached the OmTree will remove its connections to this OMElement. element.detach(); return element; }
public void ping(OMElement element) throws XMLStreamException { //Do some processing } public void pingF(OMElement element) throws AxisFault{ throw new AxisFault("Fault being thrown"); } }
看得出来，函数统一使用OMElement作为参数。在META-INF目录下面有个services.xml文件： <service name="MyService"> <description> This is a sample Web Service with two Operations,echo and ping. </description> <parameter name="ServiceClass" locked="false">userguide.example1.MyService</parameter> <operation name="echo"> <messageReceiver class="org.apache.axis2.receivers.RawXMLINOutMessageReceiver"/> </operation> <operation name="ping"> <messageReceiver class="org.apache.axis2.receivers.RawXMLINOnlyMessageReceiver"/> </operation> </service> 呵呵，也很简单嘛。有返回值的就用RawXMLINOutMessageReceiver，没返回值的就用RawXMLINOnlyMessageReceiver。把它们编译(要把axis2的jar写到classpath里去)打包压到 MyService.aar，包里文件目录如下： .//META-INF/services.xml ./userguide/example1/MyService.class 把MyService.aar拷贝到$TOMCAT_HOME/webapps/axis2/WEB-INF/services，然后去点一下http://localhost:8080/axis2页面上的Services，也就是http://localhost:8080/axis2/listServices.jsp，就可以看到MyService已经被列出来了。
