Spring Roo 2.0.0.RELEASE中'database'命令找不到，DBRE插件是否被移除？

你猜的没错——DBRE（Database Reverse Engineering）插件确实被排除在Spring Roo 2.0.0.RELEASE的默认插件集合之外了，这就是你找不到database命令的核心原因。

在Roo 2.0.0.M1这个里程碑版本里，DBRE插件是负责数据库反向生成实体Bean的核心组件，对应的正是你尝试使用的database命令。但到了正式发布的2.0.0.RELEASE版本，官方不仅移除了这个插件，连文档里相关的说明也一并删除了，所以你在插件列表里找不到它，执行命令也会提示“未找到”。

从你贴出的已安装插件列表来看，确实没有任何DBRE相关的条目，这也进一步验证了这个结论。

至于解决方案，我给你几个可行的方向：

• 手动用JPA工具替代：如果必须坚守2.0.0.RELEASE版本，可以用Hibernate Tools这类JPA生态里的工具先完成数据库实体类的反向生成，之后把生成的代码导入到你的Roo项目中，后续的开发流程还是可以正常用Roo来推进。
• 升级到后续版本：可以尝试升级到Spring Roo 2.0.1及以后的版本，先确认这些版本是否恢复了DBRE功能或者提供了替代的数据库反向生成命令，毕竟正式版的后续迭代通常会补充这类实用功能。
• 别退回到M1版本：你说得对，退回里程碑版本绝对不是好选择，M1版本存在大量未修复的bug，稳定性和正式版没法比，后续开发只会遇到更多问题。

你提供的报错信息 #

roo> database Command 'database' not found (for assistance press CTRL+SPACE or type "hint" then hit ENTER) Searching 'database' on installed repositories 0 matches found with 'database' on installed repositories

当前使用环境 #

• Spring Roo 2.0.0.RELEASE
• STS 3.9.4
• Spring IDE Roo Support 3.9.4.201804120850-RELEASE

已安装插件列表 #

roo> addon list START LEVEL 99 ID|State |Level|Name 0|Active | 0|System Bundle (5.4.0)|5.4.0 1|Active | 1|antlr-java-parser (1.0.15)|1.0.15 2|Active | 1|Commons Codec (1.8.0)|1.8.0 3|Active | 1|Commons IO (2.4.0)|2.4.0 4|Active | 1|Commons Lang (3.1.0)|3.1.0 5|Active | 1|jansi (1.6.0)|1.6.0 6|Active | 1|jsoup (1.9.1)|1.9.1 7|Active | 1|Apache Aries Subsystem API (2.0.8)|2.0.8 8|Active | 1|Apache Aries Subsystem Core (2.0.8)|2.0.8 9|Active | 1|Apache Aries Util (1.1.1)|1.1.1 10|Active | 1|Apache Felix Bundle Repository (2.0.8)|2.0.8 11|Active | 1|Apache Felix Configuration Admin Service (1.8.8)|1.8.8 12|Active | 1|Apache Felix Coordinator Service (1.0.0)|1.0.0 13|Active | 1|Apache Felix EventAdmin (1.4.6)|1.4.6 14|Active | 1|Apache Felix Gogo Command (0.16.0)|0.16.0 15|Active | 1|Apache Felix Gogo Runtime (0.16.2)|0.16.2 16|Active | 1|Apache Felix Log Service (1.0.1)|1.0.1 17|Active | 1|Apache Felix Metatype Service (1.1.2)|1.1.2 18|Active | 1|Apache Felix Declarative Services (2.0.4)|2.0.4 19|Active | 1|Apache ServiceMix :: Bundles :: freemarker (2.3.23.1)|2.3.23.1 20|Active | 1|Region Digraph (1.1.0.v20120522-1841)|1.1.0.v20120522-1841 21|Active | 1|Spring Roo - Addon - Backup (2.0.0.RELEASE)|2.0.0.RELEASE 22|Active | 1|Spring Roo - Addon - Cache Support (2.0.0.RELEASE)|2.0.0.RELEASE 23|Active | 1|Spring Roo - Addon - Configurable (2.0.0.RELEASE)|2.0.0.RELEASE 24|Active | 1|Spring Roo - Annotations - Configurable (2.0.0.RELEASE)|2.0.0.RELEASE 25|Active | 1|Spring Roo - Addon - Creator (2.0.0.RELEASE)|2.0.0.RELEASE 26|Active | 1|Spring Roo - Addon - DTO (2.0.0.RELEASE)|2.0.0.RELEASE 27|Active | 1|Spring Roo - Annotations - DTO (2.0.0.RELEASE)|2.0.0.RELEASE 28|Active | 1|Spring Roo - Addon - Email (2.0.0.RELEASE)|2.0.0.RELEASE 29|Active | 1|Spring Roo - Addon - Field (2.0.0.RELEASE)|2.0.0.RELEASE 30|Active | 1|Spring Roo - Addon - JavaBean Method Manager (2.0.0.RELEASE)|2.0.0.RELEASE 31|Active | 1|Spring Roo - Annotations - JavaBean Method Manager (2.0.0.RELEASE)|2.0.0.RELEASE 32|Active | 1|Spring Roo - Addon - JMS (2.0.0.RELEASE)|2.0.0.RELEASE 33|Active | 1|Spring Roo - Addon - JPA (2.0.0.RELEASE)|2.0.0.RELEASE 34|Active | 1|Spring Roo - Annotations - JPA (2.0.0.RELEASE)|2.0.0.RELEASE 35|Active | 1|Spring Roo - Addon - JPA Repository Layer (2.0.0.RELEASE)|2.0.0.RELEASE 36|Active | 1|Spring Roo - Annotations - JPA Repository Layer (2.0.0.RELEASE)|2.0.0.RELEASE 37|Active | 1|Spring Roo - Addon - Service Layer (2.0.0.RELEASE)|2.0.0.RELEASE 38|Active | 1|Spring Roo - Annotations - Service Layer (2.0.0.RELEASE)|2.0.0.RELEASE 39|Active | 1|Spring Roo - Addon - OS Commands (2.0.0.RELEASE)|2.0.0.RELEASE 40|Active | 1|Spring Roo - Addon - Plural Details (2.0.0.RELEASE)|2.0.0.RELEASE 41|Active | 1|Spring Roo - Annotations - Plural Details (2.0.0.RELEASE)|2.0.0.RELEASE 42|Active | 1|Spring Roo - Addon - Property Files (2.0.0.RELEASE)|2.0.0.RELEASE 43|Active | 1|Spring Roo - Addon - Push-In Support (2.0.0.RELEASE)|2.0.0.RELEASE 44|Active | 1|Spring Roo - Addon - Spring Security (2.0.0.RELEASE)|2.0.0.RELEASE 45|Active | 1|Spring Roo - Annotations - Spring Security (2.0.0.RELEASE)|2.0.0.RELEASE 46|Active | 1|Spring Roo - Automated Testing (2.0.0.RELEASE)|2.0.0.RELEASE 47|Active | 1|Spring Roo - Addon - Web MVC Controller (2.0.0.RELEASE)|2.0.0.RELEASE 48|Active | 1|Spring Roo - Annotations - Web MVC Controller (2.0.0.RELEASE)|2.0.0.RELEASE 49|Active | 1|Spring Roo - Addon - Exceptions (2.0.0.RELEASE)|2.0.0.RELEASE 50|Active | 1|Spring Roo - Annotations - Exceptions (2.0.0.RELEASE)|2.0.0.RELEASE 51|Active | 1|Spring Roo - Addon - I18n (2.0.0.RELEASE)|2.0.0.RELEASE 52|Active | 1|Spring Roo - Addon - Thymeleaf (2.0.0.RELEASE)|2.0.0.RELEASE 53|Active | 1|Spring Roo - Annotations - Thymeleaf (2.0.0.RELEASE)|2.0.0.RELEASE 54|Active | 1|Spring Roo - Addon - Web MVC Views (2.0

内容的提问来源于stack exchange，提问作者Wilko