Java链接Oracle数据库

在Oracle目录D:\oracle\product\10.2.0\db_1\jdbc\lib下就有链接Oracle所需要的驱动；

package com.mhgis.dao;

import java.sql.*;

public class ConnDB {

	String sDBDriver = "oracle.jdbc.driver.OracleDriver";

	String url = "jdbc:oracle:thin:@123.200.211.101:1521:hndb";

	String sHint = "";

	ResultSet rs = null;

	Connection conn = null;

	Statement stmt = null;

	String user = "dy";

	String pwd = "123";

	public String getSHint() {
		return sHint;
	}

	public void setSDBDriver(String dbDriver) {
		sDBDriver = dbDriver;
	}

	public String getSDBDriver() {
		return sDBDriver;
	}

	public String getUrl() {
		return url;
	}

	public void setUrl(String s) {
		url = s;
	}

	public ResultSet getResultSet() {
		return rs;
	}

	// 初始化
	public boolean initialize(String dbDrive, String dbConn, String users,
			String pwds) {
		sDBDriver = dbDrive;
		url = dbConn;
		user = users;
		pwd = pwds;

		return initialize();
	}

	// 初始化
	public boolean initialize() {
		try {
			Class.forName(sDBDriver);
			sHint = "Initialization sucessfully";
			return true;
		} catch (ClassNotFoundException e) {
			sHint = "Initialization Exception:" + e.getMessage();
			return false;
		}
	}

	// 执行查询语句
	public ResultSet executeQuery(String sql) {
		rs = null;
		try {
			conn = DriverManager.getConnection(url, user, pwd);
			stmt = conn.createStatement();
			rs = stmt.executeQuery(sql);
		} catch (SQLException ex) {
			sHint = "Query Exception:" + ex.getMessage();
		}

		return rs;
	}

	// 执行更新语句
	public boolean executeUpdate(String sql) {
		try {
			conn = DriverManager.getConnection(url, user, pwd);
			stmt = conn.createStatement();
			stmt.executeUpdate(sql);
			return true;
		} catch (SQLException ex) {
			sHint = "Update Exception :" + ex.getMessage();
			return false;
		}
	}

	// 关闭连接、结果集、statemernt,释放资源
	public boolean close() {
		try {
			if (rs != null)
				rs.close();
			if (stmt != null)
				stmt.close();
			if (conn != null)
				conn.close();

			return true;

		} catch (SQLException ex) {
			sHint = "Close Exception:" + ex.getMessage();
			return false;
		}
	}
}