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                        /Java高并發(fā)秒殺API之業(yè)務(wù)分析與DAO層

jdbc.properties文件中的配置需要加上" jdbc."的前綴

在配置數(shù)據(jù)庫連接信息（jdbc.properties文件）時跟著老師的編碼走的，如下：

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/seckill?useUnicode=true&characterEncoding=utf8
username=root
password=464648

但是居然報錯了：

### Error querying database. ?Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user 'root '@'localhost' (using password: YES))
### The error may exist in mapper/CustomerMapper.xml
### The error may involve com.zhexiang.mybatis_springmvc.model.selectCustomerByID
### The error occurred while executing a query

后來百度了一下，在以上的配置中需要寫成如下形式，有哪位同學(xué)知道具體原因么？

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/seckill?useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=