About C3P0 Error: Com.mchange.v2.c3p0 ...

1. When the C3p0.jar package is missing: 650) this.width=650; "Src=" http://s2.51cto.com/wyfs02/M01/7A/B1/wKioL1awdHPRulK7AAA5nnP8vlU889.png "Title=" Qq20160202171323.png "alt=" Wkiol1awdhprulk7aaa5nnp8vlu889.png "/>

2. 650) this.width=650 When a missing mchange-commons-java-0.2.3.4.jar is present; "Src=" http://s4.51cto.com/wyfs02/M02/7A/B1/ Wkiol1awdgbhefoqaaa79phneac341.png "title=" Qq20160202171336.png "alt=" Wkiol1awdgbhefoqaaa79phneac341.png "/>

One thing to note here: The C3P0 version problem, not that the higher the version, the better.

The high version doesn't necessarily mean it's stable.

Version high does not necessarily mean that other jar packages it relies on can also support

So when it comes up: caused by:java.lang.ClassNotFoundException:com.mchange.v2.ser.Indirector this error, it's not necessarily missing the jar package. Also version is too high, do not rely on MySQL ... such as jar packages. , so you can try a lower version of the jar package.

About C3P0 Error: Com.mchange.v2.c3p0 ...