fix: change the event type that SqlSessionFactory is listening to

mybatis-plus-extension/src/main/java/com/baomidou/mybatisplus/extension/spring/MybatisSqlSessionFactoryBean.java

@@ -45,7 +45,6 @@ import org.mybatis.spring.SqlSessionFactoryBean;
 import org.mybatis.spring.transaction.SpringManagedTransactionFactory;
 import org.springframework.beans.factory.FactoryBean;
 import org.springframework.beans.factory.InitializingBean;
-import org.springframework.context.ApplicationEvent;
 import org.springframework.context.ApplicationListener;
 import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.context.event.ContextRefreshedEvent;
@@ -83,7 +82,7 @@ import static org.springframework.util.StringUtils.tokenizeToStringArray;
  * @author hubin
  * @since 2017-01-04
  */
-public class MybatisSqlSessionFactoryBean implements FactoryBean<SqlSessionFactory>, InitializingBean, ApplicationListener<ApplicationEvent> {
+public class MybatisSqlSessionFactoryBean implements FactoryBean<SqlSessionFactory>, InitializingBean, ApplicationListener<ContextRefreshedEvent> {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(MybatisSqlSessionFactoryBean.class);
 
@@ -631,8 +630,8 @@ public class MybatisSqlSessionFactoryBean implements FactoryBean<SqlSessionFacto
      * {@inheritDoc}
      */
     @Override
-    public void onApplicationEvent(ApplicationEvent event) {
-        if (failFast && event instanceof ContextRefreshedEvent) {
+    public void onApplicationEvent(ContextRefreshedEvent event) {
+        if (failFast) {
             // fail-fast -> check all statements are completed
             this.sqlSessionFactory.getConfiguration().getMappedStatementNames();
         }