Conclusions The challenge of server security A standard attack on a web site is usually that of identifying and abusing badly written CGI scripts. Anything that gives read access to the file system is a security hole, letting people get at the code behind the site, often including database passwords and other sensitive data, plus of course there are the core parts of the underlying platform, which may contain important information: passwords, credit card lists, user-private information, and the like. Unauthorized access to this data can be embarrasing and expensive. Is SOAP fundamentally insecure? Some people, such as Bruce Schneier , have claimed that SOAP is a security disaster in the making, because of its ability to punch through firewalls. The clients are safe unless the server or its DNS address have been subverted; the server is vulnerable, and does need to be secured.
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Consider getting it now as it will help you to follow along. It includes Ant buildfiles build. Getting Ready Before we build anything using Axis2, we have to take care of a little housekeeping. Download Axis2 and extract it to a target directory. Copy the axis2. Linux users can alternatively run the setenv.
For example, you might add custom faults or change the name of the generated elements. For example, this StockQuoteService.
The server side of Axis2 can be deployed on any Servlet engine, and has the following structure. Shown in Code Listing 2. Code Listing 2: The Directory Structure of axis2. The WEB-INF directory contains the actual java classes and other support files to run any services deployed to the services directory. The main file in all this is axis2.
Compiled Java classes are placed underneath this in their proper place based on the package name. The services. Note the Axis2 WAR file must be installed first in the servlet engine.
This is known as the "exploded" format. First, download and unzip the appropriate version of Axis2 Standard Binary Distribution. It can be the version generated directly from the Java class, or a customized version of that file, and that services. Now build the project by typing ant generate. Define it, as shown in Code Listing 4. Now, the above referenced StockQuoteService. XMLStreamException; import org. OMAbstractFactory; import org. OMElement; import org. OMFactory; import org. OMNamespace; import java.
Method getPrice OMElement , for example, extracts the contents of the first child of the payload element, which corresponds to the stock symbol, and uses this to look up the current price of the stock. Unless this is an "in only" service, these methods must return an OMElement, because that becomes the payload of the return SOAP message.
Place the StockQuoteService. The -s switch specifies synchronous or blocking calls only. The -ss switch creates the server side code skeleton and related files.
The -sd switch creates a service descriptor services. The -ssi switch creates an interface for the service skeleton. If you generated the code by using WSDL2Java directly, next you have to modify the generated skeleton to implement the service if you used "ant generate.
GetPriceResponse; import samples. Update; import samples. GetPrice; import java.
WebService in Java
Java Web Services mit Apache Axis2