问题是tomcat的版本问题,tomcat新检测机制导致的这个问题,换版本可以解决问题,但不建议这么做,租用服务器不是你说换就换的。
其实问题根源是BasicDataSource,BasicDataSource类close()的一个Bug。
其实问题根源是BasicDataSource,BasicDataSource类close()的一个Bug。
BasicDataSource's
method close() doesn't deregister JDBC driver. This causes permgen
memory leaks in web server environments, during context reloads. For
example, using Tomcat 6.0.26 with Spring, and BasicDataSource declared
in Spring context, there is a message printed at web application
reload:
SEVERE: A web application registered the JBDC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
解决方法:
继承org.apache.commons.dbcp.BasicDataSource 重写close()
package cn.com.do1.component.common.jdbc;
import org.apache.commons.dbcp.BasicDataSource;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.SQLFeatureNotSupportedException;
import java.util.logging.Logger;
/**
* Created by ao.ouyang on 15-11-18.
*/
public class BasicDataSourceExt extends BasicDataSource {
public <T> T unwrap(Class<T> iface) throws SQLException {
// TODO Auto-generated method stub
return null;
}
public boolean isWrapperFor(Class<?> iface) throws SQLException {
// TODO Auto-generated method stub
return false;
}
public synchronized void close() throws SQLException {
DriverManager.deregisterDriver(DriverManager.getDriver(url));
super.close();
}
public Logger getParentLogger() throws SQLFeatureNotSupportedException {
return null;
}
}
然后用 BasicDataSourceExt 替换spring配置文件中的数据源bean的class