Detailed explanation of the method of using Google kaptcha verification code in spring MVC

preface

As we all know, verification code is one of the most effective ways to resist batch operation and malicious login. We may encounter it every day. Since the generation of verification code, many branches and methods have been derived. Google kaptcha is a very practical verification code generation class library.

Generate various styles of verification codes through flexible configuration, and put the generated verification code string into httpsession for easy acquisition and comparison.

This article describes how to quickly integrate Google kaptcha into the project under spring MVC (if used alone, configure kaptchaservlet in web.xml). There is not much to say below. Let's take a look at the detailed introduction together.

1. Maven dependency

The POM officially provided cannot be used normally. Use the kaptcha corresponding to Alibaba cloud warehouse.

2. Front end

3. MVC context configuration

More parameters:

4. Server

5. Obtain the verification code in the session

summary

The above is the whole content of this article. There are still many deficiencies in this article. I hope the content of this article has a certain reference value for your study or work. If you have any questions, you can leave a message. Thank you for your support for programming tips.