Druid连接池工具类

package utils;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.pool.DruidDataSourceFactory;

import javax.sql.DataSource;
import java.io.IOException;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;

public class JDBCutils {
//定义成员变量
private static DataSource ds;

static {
//加载配置文件
Properties pro =new Properties();
try {
pro.load(JDBCutils.class.getClassLoader().getResourceAsStream(“druid.properties”));
//获取DataSource
ds = DruidDataSourceFactory.createDataSource(pro);
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
//获取连接
public static Connection getConnection() throws SQLException {
return ds.getConnection();
}

//释放资源
public static void close(Statement stmt,Connection conn){
if (stmt!=null){
try {
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
}
}

if (conn!=null){try {conn.close();//归还连接} catch (SQLException e) {e.printStackTrace();}}}public static void close(ResultSet rs,Statement stmt, Connection conn){

// if (rs!=null){
// try {
// rs.close();
// } catch (SQLException e) {
// e.printStackTrace();
// }
// }
//
//
// if (stmt!=null){
// try {
// stmt.close();
// } catch (SQLException e) {
// e.printStackTrace();
// }
// }
//
// if (conn!=null){
// try {
// conn.close();//归还连接
// } catch (SQLException e) {
// e.printStackTrace();
// }
// }

close(null,stmt,conn);}

//获取连接池的方法
public static DataSource getDataSource(){
return ds;
}

}