下载和安装XFire和Mule
参考http://www.blogjava.net/103335460/articles/227980.html和http://www.blogjava.net/103335460/articles/227979.html对XFire和Mule的介绍
本文例子也以上述两篇文章的例子为背景。
利用XFire发布一个Web服务BookService
在Eclipse里新建项目webservice,目录结构如下:
- webservice
- src-service
- cn.hidetoishandsome.xfire.model
- Book.java
- cn.hidetoishandsome.xfire.service
- IBookService.java
- cn.hidetoishandsome.xfire.service.impl
- BookService.java
- src-conf
- META-INF
- xfire
- services.xml
- web
- WEB-INF
- lib
- web.xml
webservice
src-service
cn.hidetoishandsome.xfire.model
Book.java
cn.hidetoishandsome.xfire.service
IBookService.java
cn.hidetoishandsome.xfire.service.impl
BookService.java
src-conf
META-INF
xfire
services.xml
web
WEB-INF
lib
web.xml
其中web.xml:
- <?xml version="1.0" encoding="UTF-8"?>
- <web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4"
- xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
-
- <servlet>
- <servlet-name>xfire</servlet-name>
- <servlet-class>org.codehaus.xfire.transport.http.XFireConfigurableServlet</servlet-class>
- </servlet>
-
- <servlet-mapping>
- <servlet-name>xfire</servlet-name>
- <url-pattern>/services/*</url-pattern>
- </servlet-mapping>
-
- </web-app>
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>xfire</servlet-name>
<servlet-class>org.codehaus.xfire.transport.http.XFireConfigurableServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>xfire</servlet-name>
<url-pattern>/services/*</url-pattern>
</servlet-mapping>
</web-app>
以及services.xml:
- <beans xmlns="http://xfire.codehaus.org/config/1.0">
- <service>
- <name>BookService</name>
- <namespace>http:
- <serviceClass>cn.hidetoishandsome.xfire.service.IBookService</serviceClass>
- <implementationClass>cn.hidetoishandsome.xfire.service.impl.BookService</implementationClass>
- </service>
- </beans>
<beans xmlns="http://xfire.codehaus.org/config/1.0">
<service>
<name>BookService</name>
<namespace>http://localhost:9090/webservice/services/BookService</namespace>
<serviceClass>cn.hidetoishandsome.xfire.service.IBookService</serviceClass>
<implementationClass>cn.hidetoishandsome.xfire.service.impl.BookService</implementationClass>
</service>
</beans>
我们发布BookService类的findBookByISBN方法,通过传入book的isbn返回查询到的book的title
注意services.xml中我们把BookService的namespace设置为http://localhost:9090/webservice/services/BookService,这是为了在同一机器上同时
启动两个Tomcat实例来测试我们的demo,我们将启动一个Tomcat来host我们发布的BookService,并且port设置为9090,而启动的第二个Tomcat用来
host我们的Mule ESB,以及前台页面调用测试。
好了,现在我们已经可以启动第一个Tomcat实例来发布BookService了,访问http://localhost:9090/webservice/services/BookService?wsdl可以看
到XFire自动生成的WSDL文档。
利用Mule构建我们的ESB中心
在Eclipse里创建新项目esb,目录结构如下:
- esb
- web
- WEB-INF
- lib
- mule-services-config.xml
- web.xml
- index.jsp
esb
web
WEB-INF
lib
mule-services-config.xml
web.xml
index.jsp
其中web.xml:
- <?xml version="1.0" encoding="UTF-8"?>
- <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
- <web-app>
- <display-name>Mule</display-name>
- <description>Mule Demo</description>
-
- <context-param>
- <param-name>org.mule.config</param-name>
- <param-value>/WEB-INF/mule-services-config.xml,</param-value>
- </context-param>
-
- <listener>
- <listener-class>org.mule.config.builders.MuleXmlBuilderContextListener</listener-class>
- </listener>
-
- <welcome-file-list>
- <welcome-file>index.jsp</welcome-file>
- </welcome-file-list>
- </web-app>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<display-name>Mule</display-name>
<description>Mule Demo</description>
<context-param>
<param-name>org.mule.config</param-name>
<param-value>/WEB-INF/mule-services-config.xml,</param-value>
</context-param>
<listener>
<listener-class>org.mule.config.builders.MuleXmlBuilderContextListener</listener-class>
</listener>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
以及mule-services-config.xml:
- <?xml version="1.0" encoding="UTF-8"?>
-
- <!DOCTYPE mule-configuration PUBLIC "-//MuleSource //DTD mule-configuration XML V1.0//EN"
- "http://mule.mulesource.org/dtds/mule-configuration.dtd">
-
- <mule-configuration id="Mule_Demo" version="1.0">
-
- <mule-descriptor name="BookService" inboundEndpoint="vm://bookservice" implementation="org.mule.components.simple.BridgeComponent">
-
- <outbound-router>
- <router className="org.mule.routing.outbound.OutboundPassThroughRouter">
- <endpoint address="wsdl-xfire:http://localhost:9090/webservice/services/BookService?wsdl&method=findBookByISBN"/>
- </router>
- </outbound-router>
-
- </mule-descriptor>
-
- </mule-configuration>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mule-configuration PUBLIC "-//MuleSource //DTD mule-configuration XML V1.0//EN"
"http://mule.mulesource.org/dtds/mule-configuration.dtd">
<mule-configuration id="Mule_Demo" version="1.0">
<mule-descriptor name="BookService" inboundEndpoint="vm://bookservice" implementation="org.mule.components.simple.BridgeComponent">
<outbound-router>
<router className="org.mule.routing.outbound.OutboundPassThroughRouter">
<endpoint address="wsdl-xfire:http://localhost:9090/webservice/services/BookService?wsdl&method=findBookByISBN"/>
</router>
</outbound-router>
</mule-descriptor>
</mule-configuration>
这里我们配置了我们要调用的BookService的outbound router endpoint的address为:
wsdl-xfire:http://localhost:9090/webservice/services/BookService?wsdl&method=findBookByISBN
好了,我们的Mule ESB已经构建好了,并且我们在自己的ESB中注入了一个Web服务BookService,我们不用担心底层的实现,我们只需按照接口简单调用即可。
下面我们写前端调用代码index.jsp:
- <%@ page import="org.mule.extras.client.MuleClient, org.mule.umo.UMOMessage"%>
- <%@ page language="java" contentType="text/html; charset=UTF-8" %>
-
- <html>
- <head>
- <title>Mule Echo Example</title>
- </head>
- <body>
- <%
- String s = request.getParameter("isbn");
- if(s!=null) {
- MuleClient client = new MuleClient();
- UMOMessage message = client.send("vm://bookservice", s, null);
- %>
- <h3>The book with isbn "<%=s%>" is : <<<%=message.getPayload()%>>></h3>
- <%}%>
- Please enter the isbn of book:
- <form method="POST" name="submitISBM" action="">
- <table>
- <tr><td>
- <input type="text" name="isbn"/></td><td><input type="submit" name="Go" value=" Go " />
- </td></tr>
- </table>
- </form>
- <p/>
- </body>
- </html>
<%@ page import="org.mule.extras.client.MuleClient, org.mule.umo.UMOMessage"%>
<%@ page language="java" contentType="text/html; charset=UTF-8" %>
<html>
<head>
<title>Mule Echo Example</title>
</head>
<body>
<%
String s = request.getParameter("isbn");
if(s!=null) {
MuleClient client = new MuleClient();
UMOMessage message = client.send("vm://bookservice", s, null);
%>
<h3>The book with isbn "<%=s%>" is : <<<%=message.getPayload()%>>></h3>
<%}%>
Please enter the isbn of book:
<form method="POST" name="submitISBM" action="">
<table>
<tr><td>
<input type="text" name="isbn"/></td><td><input type="submit" name="Go" value=" Go " />
</td></tr>
</table>
</form>
<p/>
</body>
</html>
现在让我们启动第二个Tomcat实例,然后访问http://localhost:8080/esb,输入isbn号码“123456”,提交来查看返回的Book的Title。
源代码
将源代码打包提供如下,WEB-INF/lib下面的jar包都删除了,请参考http://www.blogjava.net/103335460/articles/227980.html和http://www.blogjava.net/103335460/articles/227979.html来
添加jar包。