集成FF4j的Spring Boot REST应用程序。 如何修复依赖库的MVC映射？

Question

Integrating FF4j in my application I've got a queue of issues. Its integrated finally following recommendation . Short description of recommendation is:

• Remove auto-configuration of thymeleaf;
• Add the old thymeleaf version 2.1.4.RELEASE which is used by ff4j-web

• Write a configuration class like FF4JWebConfiguration:

   @Configuration @ConditionalOnClass({ConsoleServlet.class, FF4jDispatcherServlet.class}) @AutoConfigureAfter(FF4JConfiguration.class) public class FF4JWebConfiguration extends SpringBootServletInitializer { @Bean public ServletRegistrationBean servletRegistrationBean(ConsoleServlet ff4jConsoleServlet) { return new ServletRegistrationBean(ff4jConsoleServlet, "/ff4j-console"); } @Bean @ConditionalOnMissingBean public ConsoleServlet getFF4jServlet(FF4j ff4j) { ConsoleServlet ff4jConsoleServlet = new ConsoleServlet(); ff4jConsoleServlet.setFf4j(ff4j); return ff4jConsoleServlet; } @Bean public ServletRegistrationBean ff4jDispatcherServletRegistrationBean(FF4jDispatcherServlet ff4jDispatcherServlet) { return new ServletRegistrationBean(ff4jDispatcherServlet, "/ff4j-web-console/*"); } @Bean @ConditionalOnMissingBean public FF4jDispatcherServlet getFF4jDispatcherServlet(FF4j ff4j) { FF4jDispatcherServlet ff4jConsoleServlet = new FF4jDispatcherServlet(); ff4jConsoleServlet.setFf4j(ff4j); return ff4jConsoleServlet; } 

  }

Missed detail in recommendation is maven exclusion:

<dependency>
  <groupId>org.thymeleaf</groupId>
  <artifactId>thymeleaf</artifactId>
  <version>2.1.4.RELEASE</version>
  <exclusions>
    <exclusion>
      <artifactId>javassist</artifactId>
      <groupId>org.javassist</groupId>
    </exclusion>
  </exclusions>
</dependency>

But it isn't work

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 
14:11:33.605 ERROR o.s.b.SpringApplication - Application run failed 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.boot.archive.spi.ArchiveException: Could not build ClassFile
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1745)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:576)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498)
  at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
  at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)

until I've added some maven exclusion tricks

<dependency>
  <groupId>org.thymeleaf</groupId>
  <artifactId>thymeleaf</artifactId>
  <version>2.1.4.RELEASE</version>
  <exclusions>
    <exclusion>
      <artifactId>javassist</artifactId>
      <groupId>org.javassist</groupId>
    </exclusion>
  </exclusions>
</dependency>

my application successfully launched with corrupted view because of some data doesn't load on ui:

13:38:14.785 INFO  o.f.w.FF4jServlet -   __  __ _  _   _
13:38:14.785 INFO  o.f.w.FF4jServlet -  / _|/ _| || | (_)
13:38:14.785 INFO  o.f.w.FF4jServlet - | |_| |_| || |_| |
13:38:14.785 INFO  o.f.w.FF4jServlet - |  _|  _|__   _| |
13:38:14.785 INFO  o.f.w.FF4jServlet - |_| |_|    |_|_/ |
13:38:14.786 INFO  o.f.w.FF4jServlet -              |__/  v1.8
13:38:14.786 INFO  o.f.w.FF4jServlet -
13:38:14.832 INFO  o.f.w.FF4jServlet - Thymeleaf has been initialized
13:38:14.887 INFO  o.t.TemplateEngine - [THYMELEAF] INITIALIZING TEMPLATE ENGINE
                  13:38:14.971 INFO  o.t.t.AbstractTemplateResolver - [THYMELEAF] INITIALIZING TEMPLATE RESOLVER: org.thymeleaf.templateresolver.ClassLoaderTemplateResolver
13:38:14.972 INFO  o.t.t.AbstractTemplateResolver - [THYMELEAF] TEMPLATE RESOLVER INITIALIZED OK
                  13:38:14.980 INFO  o.t.T.CONFIG - [THYMELEAF] TEMPLATE ENGINE CONFIGURATION:
[THYMELEAF] * Cache Factory implementation: org.thymeleaf.cache.StandardCacheManager
[THYMELEAF] * Template modes:
[THYMELEAF]     * VALIDXML
[THYMELEAF]     * XHTML
[THYMELEAF]     * LEGACYHTML5
[THYMELEAF]     * XML
[THYMELEAF]     * VALIDXHTML
[THYMELEAF]     * HTML5
[THYMELEAF] * Template resolvers (in order):
[THYMELEAF]     * org.thymeleaf.templateresolver.ClassLoaderTemplateResolver
[THYMELEAF] * Message resolvers (in order):
[THYMELEAF]     * [0] customMessageResolver
[THYMELEAF] * Dialect: org.thymeleaf.standard.StandardDialect
[THYMELEAF]     * Prefix: "th"
[THYMELEAF] TEMPLATE ENGINE CONFIGURED OK
13:38:14.981 INFO  o.t.TemplateEngine - [THYMELEAF] TEMPLATE ENGINE INITIALIZED
13:38:15.648 INFO  o.a.c.c.C.[.[.[/] - Initializing Spring DispatcherServlet 'dispatcherServlet'
13:38:15.649 INFO  o.s.w.s.DispatcherServlet - Initializing Servlet 'dispatcherServlet'
13:38:15.713 INFO  o.s.w.s.DispatcherServlet - Completed initialization in 64 ms
13:38:15.746 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/css/font-awesome-3.2.1.css
13:38:15.747 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/css/bootstrap.min.css
13:38:15.747 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/js/jquery/jquery-1.9.1.js
13:38:15.749 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/css/dashboard.css
13:38:15.749 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/css/style.css
13:38:15.750 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/css/bootstrap-responsive.min.css
13:38:15.972 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/js/base.js
13:38:15.973 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/js/bootstrap.js
13:38:15.981 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/img/ff4j.png
13:38:15.989 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/img/flags/flagEnglish.png
13:38:15.989 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/js/ff4j.js
13:38:16.016 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/img/flags/flagMexico.png
13:38:16.030 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/img/flags/flagFrance.png
13:38:16.031 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/img/flags/flagGermany.png
13:38:16.032 WARN  o.s.w.s.PageNotFound - No mapping for GET /static/img/flags/flagJapanese.png 
...

it can be fixed with

registry.addResourceHandler("/static/**")
    .addResourceLocations("classpath:/static/");

But ff4j servlets don't work in my application any way:

WARN  o.s.w.s.PageNotFound - No mapping for GET /features

Question

I've detected that FF4jServlet initialized and registered all required controllers but I'm not clear why it doesn't work... Is any ideas how to fix it?

Some project details:

<parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-parent</artifactId>
  <version>2.1.2.RELEASE</version>
  <relativePath/> <!-- lookup parent from repository -->
</parent>

<ff4j.version>1.8.0</ff4j.version>

Answer 1

Have you tried to look at

https://github.com/ff4j/ff4j-spring-boot-starter-parent/tree/master/ff4j-spring-boot-sample ?

There are two consoles. Which one are you trying to access ?