连接MySql数据库，向数据库插入一条数据
DEBUG [main] - Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@67b92f0a: defining beans
[org.springframework.context.support.PropertySourcesPlaceholderConfigurer#0,studentService,studentDao,dataSource]; root of factory hierarchy
org.springframework.beans.factory.BeanCreationException:
Error creating bean with name ‘studentService‘ defined in class path resource [applicationContext.xml]:
Cannot resolve reference to bean ‘studentDao‘ while setting bean property ‘studentDao‘;
nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name ‘studentDao‘ defined in class path resource [applicationContext.xml]:
Cannot resolve reference to bean ‘dataSource‘ while setting bean property ‘dataSource‘;
nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name ‘dataSource‘ defined in class path resource [applicationContext.xml]:
Error setting property values; nested exception is org.springframework.beans.PropertyBatchUpdateException;
nested PropertyAccessExceptions (1) are: PropertyAccessException 1: org.springframework.beans.MethodInvocationException:
Property ‘driverClassName‘ threw exception; nested exception is java.lang.IllegalStateException: Could not load JDBC driver class [${jdbc.driverClass]
1.配置文件出错。
（1）检测jdbc.properties————————————没有错误
（2）检测applicationContext.xml————————没有错误
2.JAR包错误
（1）重新导包————————————————解决错误，成功连接数据库，插入数据。
缺少mysql-connector-java-5.1.13-bin.jar包！！
所以报的是无法找到驱动。
【?】Java—Spring-—数据库操作—使用内置连接池，报读取不到驱动错误。Could not load JDBC driver class。
原文：https://www.cnblogs.com/PinkManBlog/p/11027787.html