Spring +MyBatis 整合访问数据库出现错误

log4j:WARN No appenders could be found for logger (org.springframework.core.env.StandardEnvironment).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

Exception in thread "main"org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dbcppool' defined in class path resource [spring_mybatis.xml]: Error setting property values; nested exception isorg.springframework.beans.NotWritablePropertyException: Invalid property 'uname' of bean class [org.apache.commons.dbcp.BasicDataSource]: Bean property 'uname' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?

 这里是文件叫 spring_mybatis.xml文件，是整合过程中的访问数据以及注册sqlSessionFactory,注册事务等

 

driver=com.mysql.jdbc.Driver

url=jdbc\:mysql\://localhost\:3306/jsd1790

username=root

upass=qwe

#dbcp pool parameters

initialSize=2

maxActive=20

maxIdle=10

minIdle=2

maxWait=15000

 

通过多次试验

Dbcp 的方法中 dataSource的属性是固定的

通过测试  在我们使用dbcp产品的时候应该设置和人家已经设置好的参数一致

import java.sql.Connection;

import java.sql.SQLException;

 

import org.apache.commons.dbcp.BasicDataSource;

 

public class DBCP_demo {

 

public static void main(String[] args) throws SQLException {

/*

 * 实现DBCP数据库连接池

 */

//1.创建数据库连接池对象(缓冲区对象)

BasicDataSource dataSource = new BasicDataSource();

//2.设置JDBC的四大参数

dataSource.setDriverClassName("com.mysql.jdbc.Driver");

dataSource.setUrl("jdbc:mysql://localhost:3306/class90");

dataSource.setUsername("root");

dataSource.setPassword("111");

//3.设置池参数(可选,数据库连接池对象都有默认参数值)

dataSource.setInitialSize(10);//连接池的初始化连接对象10个

dataSource.setMaxActive(10);//最大并打访问数10个

dataSource.setMaxIdle(5);//最大空闲数5个

dataSource.setMinIdle(2);//最小空闲数2个

dataSource.setMaxWait(300);//最大等待时间300毫秒

//4.从连接池中获取连接对象

Connection con = dataSource.getConnection();

/*

 * 5.使用连接对象完成jdbc操作:

 * jdbc:mysql://localhost:3306/class90, UserName=root@localhost, MySQL-AB JDBC Driver

 */

System.out.println(con);

//6.归还连接对象到池中

con.close();

}

}

 

 

driverClassName

Url

Username

password

 <bean id="dbcppool" class="org.apache.commons.dbcp.BasicDataSource"

 destroy-method="close">

 <property name="driverClassName" value="${driver}"/>

 <property name="url" value="${url}"/>

 <property name="username" value="${username}"/>

 <property name="password" value="${passw}"/>