小编Gen*_*uro的帖子

我正在尝试为我的社交平台实现一个实时通知系统,我想知道我是否应该升级到express.io或保持express4并包含socket.IO.根据你的经验,我不知道有任何陷阱吗？

在我的 Java 本地开发环境中，我错误地注释了一些变更集并运行了应用程序。现在，当我取消注释更改集时，Liquibase 崩溃并抱怨数据库中的重复列。

有没有什么方法可以清除 Liquibase 而不必删除整个数据库？似乎有校验和冲突之类的。

    error creating bean with name 'liquibase' defined in class path resource [org/springframework/boot/autoconfigure/liquibase/LiquibaseAutoConfiguration$LiquibaseConfiguration.class]: Invocation of init method failed; nested exception is liquibase.exception.MigrationFailedException: Migration failed for change set classpath:/db/changelog/init/33_20191217_sprint31.xml::more attributes for user:::
     Reason: liquibase.exception.DatabaseException: Duplicate column name 'option_cgu' [Failed SQL: ALTER TABLE ga_db.api_user ADD option_cgu BIT(1) NULL]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1699) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:573) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:304) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
    at …

我正在尝试在cakephp视图中检索用户ID,实现这一目标的最佳做法是什么？既然Auth->user('id') 只能在控制器中使用,那么在视图中使用什么？

编辑:

我在控制器中使用它来修复它:

$id = $this->Auth->user('id');
$this->set("user_id",$id);

然后在控制器的视图中我只检索$ user_id.

混淆后,我得到以下异常:

org.hibernate.AnnotationException: No identifier specified for entity: com.ad.ac.c.a
    at org.hibernate.cfg.InheritanceState.determineDefaultAccessType(InheritanceState.java:268)
    at org.hibernate.cfg.InheritanceState.getElementsToProcess(InheritanceState.java:223)
    at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:686)
    at org.hibernate.cfg.Configuration$MetadataSourceQueue.processAnnotatedClassesQueue(Configuration.java:3977)
    at org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.java:3931)
    at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1368)
    at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1345)
    at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:1477)
    at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:193)
    at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:1096)
    at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:278)
    at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:362)

我认为Proguard会混淆实体的getter和setter并更改属性名称.