Java -- use xfire to develop WebService on Eclipse

Finally, I completed a WebService example using Java. One of the very few problems left me alone for nearly a day. The following describes how to develop WebService on the Java platform.

Tool used: eclipse3.1.2 + tomcat5.5 + xfire1.1. It should be said that it is very easy to develop WebService using xfire. You only need to follow the steps below:

(1) create a dynamic web project in eclipse. Assume the project name is xfirezhuweitest.

(2) import the xfire user library. This library should contain xfire-1.1 files under the xfire-all-1.1.jar directory, andXfire-1.1 \ LibAll files in the directory.

(3) Copy all the files in the above xfire user Library toWebcontent \ WEB-INF \ LibDirectory.

(4) modifyWebcontent \ WEB-INF \ WEB. xmlThe content of the configuration file. The following is the modified web. xml: <? XML version = "1.0" encoding = "UTF-8"?>
<Web-app id = "webapp_id" version = "2.4" xmlns = "http://java.sun.com/xml/ns/j2ee" xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance" xsi: schemalocation = "http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<Display-Name>
Xfirezhuweitest </display-Name>
<Welcome-file-List>
<Welcome-File> index.html </welcome-File>
<Welcome-File> index.htm </welcome-File>
<Welcome-File> index. jsp </welcome-File>
<Welcome-File> default.html </welcome-File>
<Welcome-File> default.htm </welcome-File>
<Welcome-File> default. jsp </welcome-File>
</Welcome-file-List>

<Servlet>
<Servlet-Name> xfireservlet </servlet-Name>
<Servlet-class>
Org. codehaus. xfire. Transport. http. xfireconfigurableservlet
</Servlet-class>
</Servlet>

<Servlet-mapping>
<Servlet-Name> xfireservlet </servlet-Name>
<URL-pattern>/servlet/xfireservlet/* </url-pattern>
</Servlet-mapping>
 
<Servlet-mapping>
<Servlet-Name> xfireservlet </servlet-Name>
<URL-pattern>/services/* </url-pattern>
</Servlet-mapping>

</Web-app>

The servlet ing added in Web. xml indicates that all URL requests matching "/services/*" are sent to org. codehaus. xfire. Transport. http. xfireconfigurableservlet for processing.

(5) Compile a Java class that needs to be published as WebService. In this example, it is a very simple mathservice. java.

Package com. zhuweisky. xfiredemo;
Public class mathservice
{
Public int add (int A, int B)
{
Return A + B;
}
}

(6) InWebcontent \ META-INFCreate a directoryXfire folderAdd the xfire configuration file services. xml under the xfire directory. The content of this configuration file reflects the Java classes to be published as Web Services. The content of services. XML in this example is as follows:

<? XML version = "1.0" encoding = "UTF-8"?>
<Beans xmlns = "http://xfire.codehaus.org/config/1.0">
<Service>
<Name> mathservice </Name>
<Namespace> http://com.zhuweisky.xfireDemo/MathService </namespace>
<Serviceclass> com. zhuweisky. xfiredemo. mathservice </serviceclass>
</Service>
</Beans>

Xfire uses spring to parse services. xml and extract the configuration information that needs to be published as WebService.

Many articles have been introduced here, but when I start WebService according to what they call, and then use http: // localhost: 8080/xfirezhuweitest/services/mathservice? When WSDL is used to access the service description, an exception is thrown, indicating that the services. xml file does not exist --
"Org. springframework. beans. factory. beandefinitionstoreexception: ioexception parsing XML document from class path resource [META-INF/xfire/services. XML]; Nested exception is Java. io. filenotfoundexception: Class path resource [META-INF/xfire/services. XML] cannot be opened because it does not exist ".

(7) The key point is that it took me nearly one day to solve this problem.
InWebcontent \ WEB-INFCreate a directoryClassesFolderWebcontentThe entireMETA-INFFolder to the new classes folder.
The complete directory structure of the project is as follows:

(8) In package explorer, right-click the xfirezhuweitest project and choose run as> run on server to associate it with Tomcat on your machine. Then, Tomcat is started to start Web Services. (Note: Stop Tomcat before proceeding to this step)

(9) In IE, enter http: // localhost: 8080/xfirezhuweitest/services/mathservice? WSDL will get the correct Web Service Description document.

(10) Test the released WebService. I use C # To dynamically call Web Services:

// C #
String url = "http: // localhost: 8080/xfirezhuweitest/services/mathservice ";
Object [] ARGs = {1, 2 };
Object result = esframework. WebService. webservicehelper. invokewebservice (URL, "add", argS );
MessageBox. Show (result. tostring ());

(For details about C # Dynamic Web service calling, refer to here)

After execution, a dialog box is displayed, and the result is 3.