springboot pom.xml實戰（com.mchange與c3p0配置）

如下寫法會導致報錯（import com.mchange.v2.c3p0.ComboPooledDataSource; 找不到這個類！）：

<dependency>
    <groupId>com.mchange</groupId>
    <artifactId>mchange-commons-java</artifactId>
    <version>0.2.11</version>
</dependency>
<dependency>
    <groupId>c3p0</groupId>
    <artifactId>c3p0</artifactId>
    <version>0.9.1.2</version>
</dependency>

必須修改為如下，方可正常：

<dependency>
    <groupId>com.mchange</groupId>
    <artifactId>c3p0</artifactId>
    <version>0.9.2.1</version>
</dependency>