连接池工具类 | 易学教程

package cn.itcast.datasource.utils;

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;
//Druid连接池的工具类
public class JDBCutiles {
private static DataSource ds;
private static Object Statement;
static{
try {
//加载配置文件
Properties pro = new Properties();
pro.load(JDBCutiles.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 {
//归还连接
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
public static void close(Statement stmt,Connection conn,ResultSet rs) {
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 {
//归还连接
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
//获取连接池
public static DataSource getDataSource(){
return ds;
}
}

来源：https://blog.csdn.net/qq_43417276/article/details/89107815

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连接池

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