Spring Boot GS:ConnectionFactory的ComponentScan和ClassNotFoundException [英] Spring Boot GS: ComponentScan and ClassNotFoundException for ConnectionFactory

问题描述

我在玩Spring Boot入门指南，但是自动配置失败，我得到了:

I'm playing sur the Spring Boot getting started guide but the auto configuration fails and I get:

 java.lang.ClassNotFoundException: javax.jms.ConnectionFactory

似乎是由于Application类的位置.应该在哪里?在顶级软件包(src/main/java)还是特定软件包中?

It seems it's due to the location of the Application class. Where should it be located? At the top-level package (src/main/java) or in a specific package?

推荐答案

您的Application类应放在特定的程序包中，而不应放在默认(顶级)程序包中.例如，将其放在com.example中，并将所有应用程序代码放入此程序包或诸如com.example.foo和com.example.bar的子程序包中.

Your Application class should be placed in a specific package and not in the default (top-level) package. For example, put it in com.example and place all your application code in this package or in sub-packages like com.example.foo and com.example.bar.

将Application类放在默认包中，即直接放在src/main/java中不是一个好主意，并且几乎可以肯定会导致您的应用程序无法启动.如果这样做，您应该看到以下警告:

Placing your Application class in the default package, i.e. directly in src/main/java isn't a good idea and it will almost certainly cause your application to fail to start. If you do so, you should see this warning:

** WARNING ** : Your ApplicationContext is unlikely to start due to a @ComponentScan of the default package.

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