试验成功了 JDBC
连了好几天数据库,终于试验成功了,其实挺简单的,就是用oracle自带的工具类oracle.jdbc.driver.OracleDriver连上的
有一个java例子:
package data.sqlService;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.*;
public class jdbcthin {
//dbUrl数据库连接串信息,其中“1521”为端口,“oracle”为sid
String dbUrl = "jdbc:oracle:thin:@服务器IP地址:1521:oracle";
//theUser为数据库用户名
String theUser = "name";
//thePw为数据库密码
String thePw = "password";
//几个数据库变量
Connection c = null;
Statement conn;
ResultSet rs = null;
//初始化连接
public jdbcthin() {
try {
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
//与url指定的数据源建立连接
c = DriverManager.getConnection(dbUrl, theUser, thePw);
//采用Statement进行查询
conn = c.createStatement();
} catch (Exception e) {
e.printStackTrace();
}
}
//执行查询
public ResultSet executeQuery(String sql) {
rs = null;
try {
rs = conn.executeQuery(sql);
} catch (SQLException e) {
e.printStackTrace();
}
return rs;
}
public void close() {
try {
conn.close();
c.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
ResultSet newrs;
jdbcthin newjdbc = new jdbcthin();
newrs = newjdbc.executeQuery("select * from table ");
try {
while (newrs.next()) {
System.out.print(newrs.getString("name"));
System.out.println(":"+newrs.getString("context"));
}
} catch (Exception e) {
e.printStackTrace();
}
newjdbc.close();
}
}