I have a normal spring application (without spring boot) which I am building as a war file and deploying and running via an external tomcat. Now, for one of the API calls, I have to add circuit breaker in my application. So, can someone please suggest if I can use resilience4j here.
If not, which other library will be best suited and why. Please suggest.
I tried using resilience4j but it is not working. It is not executing the fallback method. I expect it to execute fallback method. I am not sure of the root cause though.
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My framework is spring framework. core version is 4.3.16.RELEASE.
Not using springboot. It's one of the legacy project.
And I wanna know what can I use the feign client without springboot.
Is this possible? and where can I found document about that.
thanks for your help :)
Yes, it's possible. You can find the documentation on their Github page.
Feign wasn't integrated with Spring initially. There is another wrapper library called Spring Cloud OpenFeign, and with it, you can use Feign in Spring Boot & Cloud applications more convenient (eg., you can use Spring's #RequestMapping annotation instead of default Feign's #RequestLine).
maybe somebody can help me with my problem. Currently trying to get Camunda running within my Spring Boot App. The Core Camunda Parts i could get running, but now i would like to add also the WebApps of Camunda (Cockpit / Tasklist etc.)
i added the dependency:
<dependency>
<groupId>org.camunda.bpm.springboot</groupId>
<artifactId>camunda-bpm-spring-boot-starter-webapp</artifactId>
<version>7.13.0</version>
<scope>provided</scope>
I tried to access it via the localhost:8080/camunda/app/welcome/ but besides of the Loading indicator i cant see anything. In my Spring Boot Application instead I see that a lot of Java Script couldn't be found from Frontend Request. e.g getting the error 404 /localhost/camunda/require.js not found.
Has anybody any idea what i am doing wrong. I tried it once with an empty Spring Boot Project and there it was working fine, but adding it to an existing project causes this issue.
More information on your project (depenedency:tree) would be required to tell why. Most likely you have included incompatible versions. Clearing the browser cache or trying in a private window may also help.
You can always create a clean Spring Boot setup with compatible library / Spring Boot versions including engine, REST API, Web Apps (and possibly security, Camunda BPM assert) using https://start.camunda.com/.
Is it possible to integrate activiti explorer maven plugin with activiti Spring boot app?, so that we can make use of activit-explorer to view deployed process in activit-spring boot engine.
I know we can use rest-api over spring boot to query process engine, but I want to know if it is possible to run the explorer over spring boot by adding it as a maven plugin during deployment?Or can we tweak the activit-explorer.war somehow to point to spring-boot activiti engine?
activiti-explorer.war is standalone webapp by itself. I've write some guideline on how to manually to embed activiti-explorer to you own app. http://blog.canang.com.my/2016/05/12/embedding-activiti-explorer-to-your-application/
Most probably step 5 in my blog is your solution.
btw, there's reason why the name is 'default'. I can't recall it atm
I thought of answering my own question so that it will be useful for other developers with similar requirement. If you want to make an eco-system where activiti-rest, explorer and your custom end points co-exist, please refer this thread from activit forum. I have tried this and is working fine. link to thread
I would like to give my observation here. In order to avoid getting into pulling source and trying to build myself, I achieved partial success, by installing the activit-explorer as part of the usual standalone installation.Started the standalone activiti-explorer using Apache-Tomcat but I configured the database for Activiti as same as (MYSQL in my case) I used in my spring-boot application to hit the common ground.
But apparently the activiti version in my spring boot app was 5.19.0.0 and that for activiti-explorer was 5.22.0.0, which created some misalignment for spring boot application startup to fail. I am hopeful that with matching versions it might succeed. When I get some more time on me I will try and update. Since then may be someone can use this route.
I have a project where I am using the GWT command pattern to implement the RPC. Here how i can integrate the Spring with GWT. Without Spring I am able to achieve the RPC. But here i need to use Spring Dependency Injection for GWT server side packages.
I am unable to find suitable sample or links to implement that.
Can anyone please provide the links and samples which has this requirement.
Without command pattern, I am able to integrate spring with GWT by referring following links
http://technophiliac.wordpress.com/2008/08/24/giving-gwt-a-spring-in-its-step/
https://docs.google.com/document/pub?id=1USHYx9cB3B1s1zM4dlkzEZ759D3lEfavn_dDewvBkaA
Thanks,
Saritha
If you are using gwt-dispatch then you can use the gwt-dispatch-spring-ext to make it work with spring instead of guice. I haven't looked at these for a while - not sure to what extent they are being maintained - please do check before deciding to use these.
Right now, I have been facing so much issue running some parts of the Spring Framework, like I have no problems running my Appengine web app with Spring MVC however have so many issues running Spring Data on top of Appengine.
I wan't to know which part of the framework have been tested to work with Appengine (AE)?
Does Spring Security work with AE?
Does Spring Data work with AE?
I'm guessing that there is no planned support for these frameworks at all for AE. However, hopefully I'm wrong.
I would suggest looking here: https://code.google.com/p/googleappengine/wiki/WillItPlayInJava
Spring Security is listed as SEMI-COMPATIBLE.
As for Spring Security, it works great. You'll just have to enable sessions. And if you want to apply the SPring filter on static files, make sure to exclude them from the static resources in appengine-web.xml.
As for Spring Data, I've never tried it but you might be able to use the JPA and REST sub-projects at least.