Java mon amour

Time 2020-11-19 04:03:15

Web Name: Java mon amour

WebSite: http://www.javamonamour.org

ID:120627

Keywords:

Java,mon,amour,

Description:

I have bought "Core Spring 5 Certification in Detail" By: Ivan Krizsan on Kobo, only 5 USD and it's quite good.Previously I have tried the book by Iuliana Cosmina, but it's too verbose for my taste, I get lost in words, I like only very succinct statement with code samples where needed. Especially I hate "sample applications" developed for the sake of demonstrating the framework... normally they turn into overcomplicated examples where the same patterns are applied "ad nauseam".enable these flags:logging.level.org.springframework.orm.jpa=TRACElogging.level.org.springframework.transaction=TRACEand you will see this in the logs:2020-09-20 18:40:00.788 DEBUG 4904 --- [ restartedMain] o.s.orm.jpa.JpaTransactionManager : Opened new EntityManager [SessionImpl(239595802 open )] for JPA transaction2020-09-20 18:40:00.794 DEBUG 4904 --- [ restartedMain] o.s.orm.jpa.JpaTransactionManager : Exposing JPA transaction as JDBC [org.springframework.orm.jpa.vendor.HibernateJpaDialect$HibernateConnectionHandle@12096038]2020-09-20 18:40:00.805 DEBUG 4904 --- [ restartedMain] o.s.orm.jpa.JpaTransactionManager : Found thread-bound EntityManager [SessionImpl(239595802 open )] for JPA transaction2020-09-20 18:40:00.805 DEBUG 4904 --- [ restartedMain] o.s.orm.jpa.JpaTransactionManager : Participating in existing transaction2020-09-20 18:40:00.834 DEBUG 4904 --- [ restartedMain] o.s.orm.jpa.JpaTransactionManager : Initiating transaction commit2020-09-20 18:40:00.839 DEBUG 4904 --- [ restartedMain] o.s.orm.jpa.JpaTransactionManager : Committing JPA transaction on EntityManager [SessionImpl(239595802 open )]2020-09-20 18:40:00.856 DEBUG 4904 --- [ restartedMain] o.s.orm.jpa.JpaTransactionManager : Closing JPA EntityManager [SessionImpl(239595802 open )] after transactionplus a lot of TRACE information equally useful (omitted here)Demo code is available here https://github.com/vernetto/txdemo @GetMapping("/greeting") public String greeting(HttpSession session, HttpServletRequest request, HttpServletResponse response, @RequestParam(name="name", required=false, defaultValue="World") String name, Model model) { model.addAttribute("name", name); System.out.println(session); System.out.println(request); for (Cookie cookie : request.getCookies()) { System.out.println(cookie.getName() + " " + cookie.getValue()); Cookie uiColorCookie = new Cookie("color2", "red2"); uiColorCookie.setDomain("localhost"); uiColorCookie.setPath("/"); response.addCookie(uiColorCookie); return "greeting";the code of the 2 applications is:https://github.com/vernetto/demosession01https://github.com/vernetto/demosession02http://localhost:8181/books01/greeting?name=pirlahttp://localhost:8282/books02/greeting?name=pirlaIn Firefox, use F12 and "storage" to examine cookies.Using embedded Tomcat, the session turns out to be: org.apache.catalina.session.StandardSessionFacade https://tomcat.apache.org/tomcat-7.0-doc/api/org/apache/catalina/session/StandardSessionFacade.html

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