oraclejava連接資料庫

Ⅰ java與oracle要怎樣連接

JDBC啊，六大步，
String url = "jdbc:oracle:thin:@localhost:1521:XE";//固定的，照著寫就行
String username = "system";//oracle用戶名
String pwd = "123";//oracle密碼
String sql = "select sum(cost) from orders where userid = ? and orderstatusid = 3";
String sql2 = "select * from vidmember where id = ?";

/*
* 根據id查找出該人消費的總金額。
* */
public int MoneyfindById(int id) {

int a = 0;
Connection conn = null;
PreparedStatement pst = null;
ResultSet rs = null;

try {
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection(url, username, pwd);
pst = conn.prepareStatement(sql);
pst.setInt(1,id);
rs = pst.executeQuery();
if(rs.next()){
a = rs.getInt("sum(cost)");
}
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

return a;
}

Ⅱ 怎麼用java連接oracle資料庫，需要詳細解釋

1)首先你要有java連接oracle資料庫的驅動類,下載好後導入到工程里

2)代碼:
import java.sql.*;

public class JDBCTest {

/**
* @param args
* @throws ClassNotFoundException
*/
public static void main(String[] args)
throws ClassNotFoundException, SQLException{
//1.准備參數
String ip = "192.168.0.26";
String sid = "tarena";
String port = "1521";
String dbUser = "openlab";
String dbPassword = "open123";
String driver
= "oracle.jdbc.driver.OracleDriver";

//2.構造驅動實例
Class.forName(driver);

//3.創建連接
//連接字元串是固定的形式,oracle的形式:
String url
= "jdbc:oracle:thin:@"
+ ip + ":" + port + ":" + sid;
Connection conn
= DriverManager.getConnection
(url, dbUser, dbPassword);
//4.執行SQL語句
String sql = "select id, password, name from user_sd1104 " +
"where id = 1001 and password = '1234'";
Statement stmt = conn.createStatement();
ResultSet rs
= stmt.executeQuery(sql);//執行sql語句
while(rs.next()){
int id = rs.getInt(1);
String pwd = rs.getString(2);
String name = rs.getString(3);
System.out.println("welcome," + name);
}
rs.close();
stmt.close();
conn.close();
}

}

Ⅲ 連接java的oracle的資料庫怎麼創建

1,你需要先下載並引入Java連接oracle的驅動包。
public class DBConnection {
public static Connection dbConn(String name, String pass) {
Connection c = null;
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
// 要是導入驅動沒有成功的話都是會出現classnotfoundException.自己看看是不是哪裡錯了,例如classpath這些設置
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
try {
c = DriverManager.getConnection(
"jdbc:oracle:thin:@nx6330:1523:orcl", name, pass);
// 連接數據的方法有四種, 這個屬於最簡單的,一般用網頁程序
// "jdbc:oracle:thin:@計算機名稱:監聽埠:系統實例名", username, password,
// 計算機名稱,要是自己不知道可以在計算機屬性查知.
// 監聽埠一般默認是1521, 要是改變了就看自己的監聽文件listener.ora
// 系統實例名一般是默認orcl, 要是不是的話就用 select name from v$database; 看看當前的實例名.
// username,password,就是登陸資料庫的用戶名和密碼.

} catch (SQLException e) {
e.printStackTrace();
}
return c;
}
}

Ⅳ 怎麼實現用java訪問oracle資料庫

用JDBC啊,
首先去oracle網站下個java連接oracle的驅動,www.oracle.com/technology/software/tech/java/sqlj_jdbc/htdocs/jdbc9201.html

代碼列子:
import java.sql.*;

public class TestDBOracle {

public static void main(String[] args)
throws ClassNotFoundException, SQLException
{
Class.forName("oracle.jdbc.driver.OracleDriver");
//
// or
// DriverManager.registerDriver
// (new oracle.jdbc.driver.OracleDriver());

String url = "jdbc:oracle:thin:@//server.local:1521/prod";
// jdbc:oracle:thin:@//host:port/service
// or
// String url = "jdbc:oracle:thin:@server.local:1521:prodsid";
// jdbc:oracle:thin:@host:port:SID

Connection conn =
DriverManager.getConnection(url,"scott", "tiger");

conn.setAutoCommit(false);
Statement stmt = conn.createStatement();
ResultSet rset =
stmt.executeQuery("select BANNER from SYS.V_$VERSION");
while (rset.next()) {
System.out.println (rset.getString(1));
}
stmt.close();
System.out.println ("Ok.");
}
}

Ⅳ 怎麼實現用java訪問oracle資料庫

這個是完全沒有問題的。

先期准備：
1、兩台電腦必須要聯網，能夠訪問到
2、將oracle的驅動程序拷貝到你的java的電腦上，並設置到環境變數中。

java代碼
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class DbTest {
public static void main(String[] args) {
Connection conn = null;
PreparedStatement prstm = null;
ResultSet rs = null;
try {
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
String url="jdbc:oracle:thin:@ip:port:orcl"; //資料庫連接字元串，需要替換ip,port,orcl
String user="user"; //用戶名，需要替換你的資料庫的用戶名
String password="pswd"; //密碼，需要替換為對應的密碼
conn = DriverManager.getConnection(url,user,password); //獲取連接

prstm = conn.prepareStatement("SELECT 1 TEST_ID FROM DUAL");
rs = prstm.executeQuery();
while (rs.next()) {
System.out.println("查詢結果為：" + rs.getInt("TEST_ID"));
}
} catch (InstantiationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
//使用完畢進行相關內容的關閉，注意相關順序
if (rs != null) {
try {
rs.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (prstm != null) {
try {
prstm.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}

}

Ⅵ java怎麼連接oracle資料庫

第一種方法JDBC鏈接：
public static Connection getConnection() {
Connection connection = null;
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
String user = "xxxxx";
String password = "xxxxxx";
connection = DriverManager.getConnection(url, user, password);
} catch (Exception e) {
e.printStackTrace();

}
return connection;
}

第二種Spring中Bean配置：
<!-- 配置oracle數據源 -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource" >
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url"
value ="jdbc:oracle:thin:@localhost:1521:orcl" />
<property name="username" value="xxxxxx" />
<property name="password" value="xxxxxxxxx" />
</bean>

Ⅶ java怎麼連接oracle資料庫連接

public static ResultSet oracleConn(String sql) {

String driver = "oracle.jdbc.driver.OracleDriver";
//寫明你數據的連接串
String url = "jdbc:Oracle:thin:@192.168.1.1:3004/xe";
Statement stmt = null;
ResultSet res = null;
Connection conn = null;
CallableStatement proc = null;
List<SqlResult> list = new ArrayList();
try {
Class.forName(driver);
//連接資料庫
conn = DriverManager.getConnection(url, "username",
"password");
stmt = conn.createStatement();
//執行sql語句，並返回結果
res = stmt.executeQuery(sql);

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

}