Question

java中dbcp数据库连接池报错

只是普通的java项目，不是web项目
报错如下：
org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'jdbc:mysql://localhost:3306/day16'
at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1150)
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
at cn.itcast.utils.JdbcUtils_DBCP.getConnection(JdbcUtils_DBCP.java:37)
at cn.itcast.demo.Demo1.main(Demo1.java:23)
Caused by: java.sql.SQLException: No suitable driver
at java.sql.DriverManager.getDriver(DriverManager.java:264)
at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1143)
... 3 more

Answer 1

1、检查语法：
jdbc:mysql//[hostname][:port]/[dbname][?param1=value1][¶m2=value2]….

示例：jdbc:mysql://localhost:3306/sample_db?user=root&password=your_password
2、检查数据库驱动，看是不是没驱动或驱动不对

追问

这是配置文件中的

这是需要的jar包

 

有什么问题呢？