Java Jdbc 连接 Oracle 执行简单查询示例

package com.test.dbtest;

import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

/**Jdbc 连接 Oracle 数据库 简单示例
*@author wanggq
*@version 创建时间：2014年3月31日 上午11:00:06
*类说明
*/
public class TestO_procedure01 {

public static void main(String[] args) {
String driver = "oracle.jdbc.driver.OracleDriver";
String url = "jdbc:Oracle:thin:@localhost:1521:orcl";
Statement stmt = null;
ResultSet res = null;
Connection conn = null;
CallableStatement proc = null;
String sql = " select T.REC_NO, T.AIRLINE,T.DEPARTURE,T.ARRIVAL from CDP_MAIN_ORDER t where t.departure=upper('pek')";

try {
Class.forName(driver);
conn = DriverManager.getConnection(url, "abc123", "abc123");
stmt = conn.createStatement();
res = stmt.executeQuery(sql);
while(res.next())
{
String rec = res.getString("REC_NO");
String airline = res.getString("AIRLINE");
String dept = res.getString("DEPARTURE");
String arr = res.getString("ARRIVAL");
System.out.println(rec+" "+airline+" "+dept+" "+arr);
}

} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

}

PreparedStatement stmt = null;
ResultSet res = null;
Connection conn = null;
CallableStatement proc = null;
String sql = " select T.REC_NO, T.AIRLINE,T.DEPARTURE,T.ARRIVAL from CDP_MAIN_ORDER t where t.departure=upper(?)";

try {
Class.forName(driver);
conn = DriverManager.getConnection(url, "abc123", "abc123");
stmt = conn.prepareStatement(sql);
stmt.setString(1, "pek");
res = stmt.executeQuery();