java C3P0 groupId 有两个什么关系?
在maven的仓库(http://mvnrepository.com/search?q=c3p0+)里面看到两个c3p0
1.
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.1</version>
</dependency>
2.
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
他们什么关系,如何选择?