隨筆檔案

1、Aegis Binding這是XFire默認的綁定方式。
????? 他的特點是支持簡單的綁定，不支持復雜的shema綁定。如果要實現復雜的schema綁定，需要自定義實現Type。
?????? 1）public PurchaseOrderType receiveOrder(PurchaseOrderType po){......}
?????? 2）public class PurchaseOrderType extends Type
??????????? {
????
?????????????????public ReferenceToDataType() {
??????????????????????setTypeClass(PurchaseOrderType.class);
??????????????????????setSchemaType(new QName(.. the QName of the type you're returning ..));
?????????????????}

?????????????????public void writeObject(Object value, XMLStreamWriter writer,?
????????????????????????????????????MessageContext context)
?????????????????{
??????????????????????PurchaseOrderType data = (PurchaseOrderType) value;
??????????????????????... do you're writing to the writer
?????????????????}

?????????????????publicObject readObject( MessageReader reader, MessageContext context )
?????????????????{
??????????????????????// If you're reading you can read in a reference to the data
??????????????????????XMLStreamReader reader = context.getInMessage().getXMLStreamReader();

??????????????????????PurchaseOrderType data = read(reader);
??????????????????????return data;
?????????????????}

?????????????????public void writeSchema(Element schemaRoot)
?????????????????{
??????????????????????// override this to write out your schema
??????????????????????// if you have it in DOM form you can convert it to YOM via DOMConverter
?????????????????}
???????????????}
2、Jibx綁定
???? 這種類型的綁定相對來說不需要自己寫額外的代碼，代是需要自己在開發之前進行Jibx的預編譯，他會為我們生成相應的輔助類。但是這些東需要額外的配置，所以在開發過程中也不是很方便。
3、XMLBeans綁定
??? 這種綁定支持任意復雜的schema，可以自動生成javabean代碼。
??
?? 唉，沒時間了，有空再繼續吧。現在先做個開始。

1、使用org.codehaus.xfire.spring.XFireSpringServlet與ServiceBean

1.1 web.xml的配置

?<web-app>
?<display-name>Spring Image Database</display-name>
?<description>Spring Image Database sample application</description>
?<!--
??These values are used by ContextLoaderListener, defined immediately below.
??????? The files listed below are used to initialize the business logic portion of the application.
??????? Each dispatcher servlet (defined further down) has their own configuration file,
??????? which may or may not depend on items in these files.
??? -->
??? <context-param>
?????? <param-name>contextConfigLocation</param-name>
?????? <param-value>
???? classpath:applicationContext-webservice.xml
??? </param-value>
??? </context-param>
?<!-- Log4j configuration listener-->
?<listener>
??<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
?</listener>
?<!-- Spring framework -->
?<listener>
??????? <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
?</listener>

?<servlet>
??????? <servlet-name>XFireServlet</servlet-name>
??????? <display-name>XFire Servlet</display-name>
??????? <servlet-class>org.codehaus.xfire.spring.XFireSpringServlet</servlet-class>
??? </servlet>
??????????????
??? <servlet-mapping>
??????? <servlet-name>XFireServlet</servlet-name>
??????? <url-pattern>/services/*</url-pattern>
??? </servlet-mapping>

?<welcome-file-list>
??<welcome-file>index.jsp</welcome-file>
?</welcome-file-list>
?
</web-app>

1.2 applicationContext-webservice.xml的配置：

<beans>

??? <import resource="classpath:org/codehaus/xfire/spring/xfire.xml"/>
???
??? <bean name="echoService" class="org.codehaus.xfire.spring.ServiceBean">
??????? <property name="serviceBean" ref="echo"/>
??????? <property name="serviceClass" value="org.codehaus.xfire.test.Echo"/>
??????? <property name="inHandlers">
??????????? <list>
??????????????? <ref bean="addressingHandler"/>
??????????? </list>
??????? </property>
??? </bean>

??? <bean id="echo" class="org.codehaus.xfire.test.EchoImpl"/>

??? <bean id="addressingHandler" class="org.codehaus.xfire.addressing.AddressingInHandler"/>
?
? ?<bean name="bookService" class="org.codehaus.xfire.spring.ServiceBean">
??????? <property name="serviceBean" ref="bookServiceBean"/>
??????? <property name="serviceClass" value="org.codehaus.xfire.demo.BookService"/>
??? </bean>

??? <bean id="bookServiceBean" class="org.codehaus.xfire.demo.BookServiceImpl"/>

</beans>

1.3 這樣將會發布兩個service，BookService和EchoService。隨后就可以使用client端進行測試了。

???? //測試BookService
??? public static void main(String args[])
??? {?
??????? String serviceURL = "http://127.0.0.1:9001/xfire/services/BookService";
??????? Service serviceModel = new ObjectServiceFactory().create(BookService.class,null,"http://xfire.codehaus.org/BookService",null);
??????? XFireProxyFactory serviceFactory = new XFireProxyFactory();
??????? try
??????? {
??????????? BookService service = (BookService) serviceFactory.create(serviceModel, serviceURL);
??????????? Client client = Client.getInstance(service);
??????????? client.addOutHandler(new OutHeaderHandler());
??????????? Book[] books = service.getBooks();
??????????? System.out.println("BOOKS:");
??????????? for (int i = 0; i < books.length; i++)
??????????? {
??????????????? System.out.println(books[i].getTitle());
??????????? }
??????? }
??????? catch (MalformedURLException e)
??????? {
??????????? e.printStackTrace();
??????? }
??? }

1.4 忘了BookService及其實現了。

???? public interface BookService
??? {
???????????? ?public Book[] getBooks();
???
????????????? public Book findBook(String isbn);
???
???????????? public Map getBooksMap();
?? }

?

??? public class BookServiceImpl implements BookService
??? {
??? private Book onlyBook;
???
??? public BookServiceImpl()
??? {
??????? onlyBook = new Book();
??????? onlyBook.setAuthor("Dan Diephouse");
??????? onlyBook.setTitle("Using XFire");
??????? onlyBook.setIsbn("0123456789");
???? }

???? public Book[] getBooks()
???? {
??????? return new Book[] { onlyBook };
???? }
???
???? public Book findBook(String isbn)
???? {
??????? if (isbn.equals(onlyBook.getIsbn()))
??????????? return onlyBook;
???????
??????? return null;
???? }

???? public Map getBooksMap() {
??Map result = new HashMap();
??result.put(onlyBook.getIsbn(), onlyBook);
??return result;
???? }
??? }

1.5 簡單的測試就是通過IE，輸入http://ip:port/context/services/BookService?wsdl或者http://ip:port/context/services/EchoService?wsdl，將會出現相應的wsdl文檔。

???? 如果只是輸入http://ip:port/context/services/BookService，會出現Invalid SOAP request.這也說明配置正確。

2、直接集成Spring（通過Spring的org.springframework.web.servlet.DispatcherServlet）

2.1 web.xml配置
<web-app>
<!-- START SNIPPET: xfire -->
??? <context-param>
??????? <param-name>contextConfigLocation</param-name>
??????? <param-value>
??????? classpath:org/codehaus/xfire/spring/xfire.xml</param-value>
??? </context-param>

??? <context-param>
??????? <param-name>log4jConfigLocation</param-name>
??????? <param-value>/WEB-INF/log4j.properties</param-value>
??? </context-param>

??? <listener>
??????? <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
??? </listener>

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

??? <servlet>
??????? <servlet-name>xfire</servlet-name>
??????? <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
??? </servlet>

??? <servlet-mapping>
??????? <servlet-name>xfire</servlet-name>
??????? <url-pattern>/*</url-pattern>
??? </servlet-mapping>
<!-- END SNIPPET: xfire -->
</web-app>
2.2 xfire-servlet.xml配置
<beans>
??? <!-- START SNIPPET: xfire -->
??? <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
??????? <property name="urlMap">
??????????? <map>
??????????????? <entry key="/EchoService">
??????????????????? <ref bean="echo"/>
??????????????? </entry>
??????????? </map>
??????? </property>
??? </bean>

??? <bean id="echoBean" class="org.codehaus.xfire.spring.example.EchoImpl"/>

??? <!-- Declare a parent bean with all properties common to both services -->
??? <bean id="echo" class="org.codehaus.xfire.spring.remoting.XFireExporter">
??????? <property name="serviceFactory">
??????????? <ref bean="xfire.serviceFactory"/>
??????? </property>
??????? <property name="xfire">
??????????? <ref bean="xfire"/>
??????? </property>
??????? <property name="serviceBean">
??????????? <ref bean="echoBean"/>
??????? </property>
??????? <property name="serviceClass">
??????????? <value>org.codehaus.xfire.spring.example.Echo</value>
??????? </property>
??? </bean>
??? <!-- END SNIPPET: xfire -->
</beans>
2.3 余下的配置跟第一種方法一樣。

3、另外xfire的官方文檔上還有一種方法，是通過XBean與Spring結合來實現webservice的expose。還是覺得上面的兩種方法比較好。既然已經與spring集成在一起了，何必再引入其他的呢？以后的維護是不是也要有問題呢？

?在隨后的文章里將會介紹xfire與Jibx結合的例子。