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BUG情景：项目使用spring的jdbc连连接数据库，同时引用了tomcat连接池。项目使用maven管理jar包，明明已经加入了mysql的依赖，但是就是报找不到mysql driver class 的异常！╮(╯▽╰)╭

spring-datasource.xml

Bug原因

There is actually a very simple workaround with Spring. Instead of having the Tomcat connection pool create the database connection and fail because of class loader shenanigans, let Spring create it and pass a reference to the connection pool.

   
       
        
        
        
    
   
   
       
        
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Then the connection pool will actually use the database connection as a template for creating as many additional connections as it needs.The best part is that you don’t have to mess with tomcat/lib, which you may not even have access to.

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