Java使用Jdbc连接Oracle执行简单查询操作示例

本文实例讲述了Java使用Jdbc连接Oracle执行简单查询操作。分享给大家供大家参考，具体如下：

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();
}
}
}

也可以使用防止SQL注入PreparedStatement方法

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();

DB:

希望本文所述对大家java程序设计有所帮助。

来源：https://blog.csdn.net/morning99/article/details/22659925