搭建SSM项目时报错（org.springframework.jdbc.CannotGetJdbcConnectionException）

严重: Servlet.service() for servlet [SpringMVC] in context with path [/ssm] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:
Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.mysql.jdbc.Driver  '

在搭建SSM项目时报错，一直提示Could not get JDBC Connection;

琢磨了好久才发现是jdbc.properties的文件写错了，如下：

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/lin_test
username=root
password=123456  

在配置jdbc的时候，末尾不能有空格存在，要删掉所有的多余空格