I followed the following tutorial: Using WebSocket to build an interactive web application Everything works as described and aplication looks fine. I just have a nice controller: And a bit configuration. Now I want to add security for this simple application. I spent time to find an example but I could not fi…
Tag: spring-boot
java.sql.SQLException: Unknown system variable ‘query_cache_size’
I have a app running with JDBC and get data from MySQL, but I can’t build it because of this error : I have file application.properties here Mysql workbench is 8.0 version Answer query_cache_size was removed in MySQL 8. Check the docs. It works with JDBC driver 5.1.44.
Invalid column name exception – JdbcPagingItemReader query with alias
Spring batch step fails when JdbcPagingItemReader query has a join and alias. It works fine when I remove the join and just do a simple query from employee table. Below is the code snippet that fails. Did anyone encounter such an issue ? Any help would be appreciated. spring-batch-core-4.0.1.RELEASE spring-bo…
Spring Security 5 : There is no PasswordEncoder mapped for the id “null”
I am migrating from Spring Boot 1.4.9 to Spring Boot 2.0 and also to Spring Security 5 and I am trying to do authenticate via OAuth 2. But I am getting this error: java.lang.IllegalArgumentException: There is no PasswordEncoder mapped for the id “null From the documentation of Spring Security 5, I get t…
Spring MessageSource fallback to explicit locale
In some spring boot application, i18n is used. Here is the config: There is a requirement to obtain a locale from header Accept-language, falling back to “en” if: the header is missing, the header has wrong value, the config is missing for the locale. Two first points are resolved by provided Loca…
Cannot forward to error page for request … as the response has already been committed. As a result, the response may have the wrong status code
I am using Spring Boot 2.0.0.RELEASE, Thymeleaf, Spring Security, JDK 10, Apache Tomcat 9.0.6 . I have controller at application.properties I have I have configuration class When I access http://localhost:8081/cash/ccy or http://localhost:8081/cash/vy I see the same error … The full console log is https…
Spring Rabbit MQ listener issues
My Configuration Class is below:- The DTO is :- The Snippet for publishing the message is:- And the snippet to listen the message is:- The issue is the logs here are not coming up but if I try with The snippet below then it works:- it does goes to the logs but how to get the TestDto in that case?
Spring boot cannot resolve view page
I am trying to run a simple web application with using Spring Boot but there is a problem with resolving view. When I go to http://localhost:8080/ it shows; Is there any missing property or library? Why it cannot resolve my html page? My application.properties; Answer If you use spring boot with some template…
401 instead of 403 with Spring Boot 2
With Spring Boot 1.5.6.RELEASE I was able to send HTTP Status code 401 instead of 403 as described in How let spring security response unauthorized(http 401 code) if requesting uri without authentication, by doing this: using the org.springframework.boot.autoconfigure.security.Http401AuthenticationEntryPoint …
Spring Boot take over web.xml configuration
I have a Spring Boot web application that works fine. Now I got a 3rd party lib which I must use in the project. The manual of integrating the lib is written with respect to an existing web.xml file. My project completely relies on a Java based config. According to the Spring documentation I can reach my goal…