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We have some code written using commons-httpclient-3.1 that needs to be converted to 4.1. I'm only somewhat familiar with this and am reading the 4.1 httpclient tutorial now.
I see a couple of posts here (e.g. Converting from HttpClient 3 to 4 but that's about a specific construct). Seems like there should be some docs/examples somewhere showing how to upgrade usage of 3.x to 4.x ?
One specific example: replacing use of org.apache.commons.httpclient.HttpState
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Concurrent execution of HTTP methodsHttpClient is fully thread-safe when used with a thread-safe connection manager such as MultiThreadedHttpConnectionManager.
You do not need to explicitly close the HttpClient, however, (you may be doing this already but worth noting) you should ensure that connections are released after method execution. Edit: The ClientConnectionManager within the HttpClient is going to be responsible for maintaining the state of connections.
The Apache HttpComponents project is responsible for creating and maintaining a toolset of low level Java components focused on HTTP and associated protocols. This project functions under the Apache Software Foundation (http://www.apache.org), and is part of a larger community of developers and users.
I would replace the library jar(s) in your IDE and look for compiler errors to start with. You may wish to go back and check all usages to ensure they are used the same way, and parameters remain as expected (hopefully they didn't switch things around).
Is there a specific piece of code you are unsure how to get working with 4.1?
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