Скачать или смотреть Troubleshooting javax.xml.soap.MessageFactory.createMessage Performance Issues with Large Content

Learn how to tackle the issue of slow performance in `javax.xml.soap.MessageFactory.createMessage` when handling large SOAP responses. Discover effective alternatives for better efficiency.
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Troubleshooting javax.xml.soap.MessageFactory.createMessage Performance Issues with Large Content

When working with SOAP messages, especially those containing substantial data, performance can become a significant concern. One developer faced a daunting challenge when calling the javax.xml.soap.MessageFactory.createMessage method with a 100 MB response content. The process took an agonizing 3–4 minutes, causing transaction timeouts on the WildFly application server. In this guide, we'll explore the issue in detail and present a viable alternative approach to improve efficiency.

Problem Overview

The root of the problem involves creating a SOAPMessage from a large InputStream. The relevant code snippet is as follows:

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In this scenario:

The createMessage call took several minutes for a 100 MB content.

The getSOAPBody method also contributed significantly to the delay.

The process performed reasonably well for contents less than 30 MB.

The developer noted that while debugging, the class responsible for these operations was SOAPMessageFactory1_2Impl from saaj-impl-1.3.jar. However, the developer struggled to identify the cause of such sluggish behavior.

Exploring the Cause of the Slowness

While determining the performance bottleneck can be complex, there can be a few contributing factors:

Library Version Conflicts: Different versions of SOAP-related libraries may lead to performance issues. The presence of multiple JARs like axis-1.4.jar and saaj-impl-1.3.jar can complicate matters.

Input Stream Processing: The handling of large XML documents embedded in the response can take significant time during parsing and object creation.

Suggested Solution: Alternative Approach

To address the issue, the developer replaced the initial approach with a more efficient implementation using the Document Object Model (DOM) parser. The revised code is as follows:

[[See Video to Reveal this Text or Code Snippet]]

Breakdown of the Revised Approach

Use of DOM Parser: The DOM parser is capable of processing large XML files more efficiently than the SOAP message creation approach.

Namespace Awareness: By setting the parser to be namespace-aware, we ensure that the parsing respects the XML structure.

Direct Extraction of Base64 Content: The approach directly retrieves the base64 content from the XML, allowing for faster processing.

Decoding: Leveraging the Base64 utility to decode the string into raw binary data improves performance and reduces processing time.

Conclusion

The original approach using javax.xml.soap.MessageFactory.createMessage suffered from performance delays primarily due to the handling of large messages. By switching to a DOM parser, the developer experienced significant improvements, reducing processing time and avoiding transaction timeouts.

If you find yourself struggling with similar performance issues, consider evaluating your approach and explore using more efficient parsers tailored for your data size. Remember, the choice of libraries and methods can profoundly impact your application's performance.

By honing in on these elements, you'll commit to enhancing the efficiency of your SOAP message processing tasks, making your applications not only faster but also more reliable.