標籤:private oracle package import public
package org.sin.common.dao;import java.sql.CallableStatement;import java.sql.Connection;import java.sql.DriverManager;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;import oracle.jdbc.OracleTypes;import org.sin.domain.User;public class JDBCDao {private static boolean mysql = false;private Connection conn;static {try {if (mysql) {Class.forName("com.mysql.jdbc.Driver");} else {Class.forName("oracle.jdbc.driver.OracleDriver");}} catch (ClassNotFoundException e) {e.printStackTrace();}}private JDBCDao() {String url, user, password;if (mysql) {url = "jdbc:mysql://127.0.0.1:3306/cl";user = "root";password = "";} else {url = "jdbc:oracle:thin:@localhost:1521:orcl";user = "andy";password = "root";}try {conn = DriverManager.getConnection(url, user, password);System.out.println(conn.getAutoCommit());} catch (SQLException e) {e.printStackTrace();}}private User SaveUser(User user) {String sql = "insert into t_User(id,username,password) values(user_id.nextval,?,?)";Long id = -1L;try {conn.setAutoCommit(false);PreparedStatement ps = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);int i = 0;for (i = 0; i < 10000; i++) {ps.setString(1, user.getUsername() + "-" + i);ps.setString(2, user.getPassword() + "-" + i);ps.executeUpdate();ResultSet rs = ps.getGeneratedKeys();while (rs.next()) {id = rs.getLong(1);System.out.println(">>>>>>>" + id);}}conn.commit();} catch (SQLException e) {e.printStackTrace();}user.setId(id);return user;}private User SaveUser2(User user) {String sql = "BEGIN insert into t_user(id,username,password) values(user_id.nextval,?,?) returning id into ?; END;";Long id = -1L;try {conn.setAutoCommit(false);CallableStatement cs = conn.prepareCall(sql);for(int i=0;i<10000;i++){cs.setString(1, user.getUsername() + "-" + i);cs.setString(2, user.getPassword() + "-" + i);cs.registerOutParameter(3, OracleTypes.NUMBER);cs.execute();id = cs.getLong(3);}conn.commit();} catch (SQLException e) {e.printStackTrace();}user.setId(id);return user;}public static void main(String[] args) {JDBCDao dao = new JDBCDao();Long start = System.currentTimeMillis();User u = new User("andy", "andypwd");dao.SaveUser2(u);Long end = System.currentTimeMillis();System.out.println(u.getId() + "--" + u.getUsername());Long k = end - start;System.out.println("消耗:" + k);}}
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