spring-guide | :octocat: Spring 실전 가이드 | Microservice library

I don't understand exactly what is the way of working with maven projects in Eclipse. The problems I have are often with projects I download from github. If I set the project myself it usually work, so I think I'm doing something different from the majority of people.

I'll try to detail a specific case:

1. I clone a repo, let's say: https://github.com/spring-guides/tut-spring-boot-oauth2
2. In Eclipse I import "existing maven project"
3. The project has a "Maven nature" as indicated by M on the folder icon
4. I try to run java class with main from Eclipse. First strange thins is that the "Run As" menu doesn't have "Run as a Java application"
5. I have to configure the configuration manually. Now it runs, but strange things happens, like I can't edit the file as the "content assist" throw errors instead of giving the normal assists.
6. I notice that the project has no "source folder". So my first instinct is to add a Java nature or select src as source folder
7. So I add Java nature to the project. This is a disaster. It can compile anymore as it can find packages. All classes have errors. I try to play around setting source folders on /src or /src/main/java. Sometimes I fix the errors but I can't run (and now I have run as Java application) but when I run it can't load the class

So in the end, I'm a bit confused and I don't know if I explained clearly what I'm doing. I think I would like to know in a simple way how people are doing it, rather than trying to correct my steps as I'm probably creating a mess myself.

Any help or suggestion welcome. I'm using the last version of eclipse. I don't know which other tool's versions are relevant.

P.S. I also refresh,restart,clean rebuild the project often after touching things...but it doesn't get better

I've started my project with this Spring tutorial. Now I want to develop it, the first step is to add OAuth 2.0 to this project, but when I was looking for some tutorial on how to add it is always started with "Create Your Java Application with Spring, add dependencies: Spring Web, Spring Security...".

Is there any way to add these dependencies to the existing project? Or any better way to develop existing projects?

Or should I build it again?

I am new to Spring cloud gateway implementation. Just by trying a simple tutorial the code doesnt seem to work. Please see the following steps and code which I have done.

1. Use spring initializer to create a gateway project

Pom.xml

1) Clone this repo https://github.com/spring-guides/gs-spring-boot

2) Navigate to complete directory and run

I am currently learning RabbitMQ and Spring AMPQ. I was trying some examples this week but I am facing an issue in some step of the configuration.

I have this docker-compose file:

I'm writing simple Stomp Websocket application with Spring, and clients are both web (JS), and Mobile (ios, android). From JS code client connecting over SockJS, while mobile clients are using plain websocket connection behind SockJS. The issue is that behaviour in my ChannelInterceptor where I'm checking authentication, is completely different for different type of connections. I can't make it work the same for every client. Let me briefly give some code behind it and explain by example: Websocket starter was taken from Spring example here: https://github.com/spring-guides/gs-messaging-stomp-websocket.git

Websocket Config:

I can't understand it's usage because tilde is not a metacharacter in Regular expression.

I saw it here:

https://github.com/spring-guides/tut-rest/blob/master/.gitignore

https://github.com/spring-guides/tut-rest/commit/a086df26fd7e6b54b369d4fa0b45522c9bc3a570#diff-a084b794bc0759e7a6b77810e01874f2

I am following this tutorial on Spring Security in the Spring.io guides. The logout and login functions are working fine, but when I add the following line in the WebSecurityConfigurerAdapter it doesn't work as expected. (Basically, I want to prevent a user from login from two devices if he is already logged in in one)

I am attempting to dockerize my SpringMVC application via Maven. My intent is to have an image that I can then proceed to expose and display via my web browser.

Unfortunately, in following this guide, I appear to still lack a critical piece of understanding concerning the pom.xml edits I must make to achieve this, and the Dockerfile.

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