【文件属性】：
文件名称：C3P0连接池
文件大小：2.29MB
文件格式：ZIP
更新时间：2021-08-22 04:47:25
c3p0
package cn.tedu.pool;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import com.mchange.v2.c3p0.ComboPooledDataSource;
public class C3P0Test {
public static void main(String[] args) {
// TODO Auto-generated method stub
Connection conn=null;
Statement stat =null;
ResultSet rs=null;
ComboPooledDataSource cpds = new ComboPooledDataSource();
//ComboPooledDataSource cpds = new ComboPooledDataSource("config1");
try{
/*cpds.setDriverClass("com.mysql.jdbc.Driver");
cpds.setJdbcUrl("jdbc:mysql:///mydb1");
cpds.setUser("root");
cpds.setPassword("");*/
conn=cpds.getConnection();
stat=conn.createStatement();
rs=stat.executeQuery("select * from account" );
while(rs.next()){
int id = rs.getInt(1);
String name = rs.getString("name");
double money = rs.getDouble("money");
System.out.println(id+":"+name+":"+money);
}
}catch(Exception e){
e.printStackTrace();
}finally{
if(rs !=null){
try {
rs.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
rs=null;
}
}
if(stat !=null){
try {
stat.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
stat =null;
}
}
if(conn !=null){
try {
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
conn =null;
}
}
}
}
}