批量操作数据库

package com.huaxia.idc.utils;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.util.Date;
import java.util.List;
import org.apache.log4j.Logger;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;


public class BatchOperateDB {

    private String create_room_sql_by_resroom = "insert into res_idc_room(roomid,roomname,roomalias，createtime) values (seq_netdevice_room.nextval,?,?,?)";
    private String batchModifyResIdcPortNoSQL = "update res_idc_port t set t.port_no=? where t.port_id=?";
    private static final Logger logger = Logger.getLogger(BatchOperateDB.class);

    /**
     * jdbc批量创建设备机房列表.
     *
     * @param roomLst
     */
    public void batchCreateRoomByResRoom(List<Object> roomLst) {
        Connection conn = null;
        PreparedStatement psmt = null;
        try {
            conn = getCon();
            conn.setAutoCommit(false);
            psmt = conn.prepareStatement(create_room_sql_by_resroom);
            int i = 0;

            for (Object room : roomLst) {
                psmt.setString(1, "");
                psmt.setString(2, "");
                psmt.setTimestamp(3, new Timestamp(new Date().getTime()));
                psmt.addBatch();            
                if (++i % 30 == 0) {// 一次提交30个
                    psmt.executeBatch();
                    conn.commit();
                }
            }

            if (roomLst.size() % 30 != 0) {
                psmt.executeBatch();
                conn.commit();
            }

        } catch (SQLException e) {
            e.printStackTrace();
            try {
                conn.rollback();
            } catch (SQLException e1) {
                e1.printStackTrace();
            }
            throw new RuntimeException(e);
        } finally {
            closeCon(null, psmt, conn);
        }
    }

    /**
     * jdbc批量更新资源端口表 -- PORT_NO名称.
     *
     * @param resPortList
     */
    public void batchModifyResIdcPortNo(List<Object> resPortList) {
        Connection conn = null;
        PreparedStatement psmt = null;
        try {
            conn = getCon();
            conn.setAutoCommit(false);

            psmt = conn.prepareStatement(batchModifyResIdcPortNoSQL);
            int i = 0;

            for (Object port : resPortList) {
                psmt.setString(1, "");
                psmt.setLong(2, 3l);

                psmt.addBatch();
                
                if (++i % 30 == 0) {
                    psmt.executeBatch();
                    conn.commit();
                }
            }

            if (resPortList.size() % 30 != 0) {
                psmt.executeBatch();
                conn.commit();
            }

        } catch (SQLException e) {
            e.printStackTrace();
            try {
                conn.rollback();
            } catch (SQLException e1) {
                e1.printStackTrace();
            }
            throw new RuntimeException(e);
        } finally {
            closeCon(null, psmt, conn);
        }

    }

    /**
     * hibernate批量更新
     *
     * @param datas
     * @param sessionFactory
     */
    public void updateVmwareBasic(List<Object> datas,
            SessionFactory sessionFactory) {
        String sql = "update RES_IDC_DATA_CENTER c set c.BASIC_UPDATE_TIME=:basicUpdateTime where c.DC_NAME=:dcName";
        Session session = null;
        Transaction transaction = null;
        try {
            int i = 0;
            session = sessionFactory.openSession();
            transaction = session.beginTransaction();
            for (Object data : datas) {
                Query query = session.createSQLQuery(sql);
                query.setParameter("basicUpdateTime",
                        new Timestamp(System.currentTimeMillis()));
                query.setParameter("dcName", "");
                int count = query.executeUpdate();
                i++;
                if (i % 30 == 0 || i == datas.size()) {
                    session.flush();
                }
            }
            transaction.commit();
        } catch (Exception e) {
            transaction.rollback();
            logger.error(e.getMessage());
        } finally {
            session.close();
        }
    }

    /**
     * hibernate 批量插入
     *
     * @param datas
     * @param sessionFactory
     */
    public void insertVmwareBasic(List<Object> datas,
            SessionFactory sessionFactory) {
        Session session = null;
        Transaction transaction = null;
        try {
            int i = 0;
            session = sessionFactory.openSession();
            transaction = session.beginTransaction();
            for (Object data : datas) {
                session.save(data);
                i++;
                if (i % 30 == 0 || i == datas.size()) {
                    session.flush();
                    session.clear();
                }
            }
            transaction.commit();
        } catch (Exception e) {
            transaction.rollback(); // 回滚事物
            logger.error(e.getMessage());
        } finally {
            session.close(); // 关闭session
        }
    }

    /**
     * hibernate批量删除
     *
     * @param datas
     * @param sessionFactory
     */
    public void deletetVmwareBasic(SessionFactory sessionFactory) {
        Session session = null;
        Transaction transaction = null;
        try {
            session = sessionFactory.openSession();
            transaction = session.beginTransaction();
            String hqlDelete = "delete Customer c where c.name = :oldName";
            int deletedResult = session.createQuery(hqlDelete)
                    .setString("oldName", "Tom").executeUpdate();
            transaction.commit();
            logger.info("delete result is:" + deletedResult);
        } catch (Exception e) {
            transaction.rollback(); // 回滚事物
            logger.error(e.getMessage());
        } finally {
            session.close(); // 关闭session
        }
    }

    /**
     * hibernate单条插入
     *
     * @param session
     * @param info
     * @return
     */
    @SuppressWarnings("finally")
    public Integer addMsg(Session session, String info) {
        Transaction transaction = session.beginTransaction();
        Integer id = 0;
        try {
            Query query = session
                    .createSQLQuery("insert into res_idc_room (id,info,add_time) values(:id,:info,sysdate)");
            query.setParameter("info", info);
            query.setParameter("id", id);
            query.executeUpdate();
            transaction.commit();
        } catch (Exception e) {
            transaction.rollback();
            logger.error(e.toString());
        } finally {
            session.close();
            return id;
        }
    }

    /**
     * 获取连接
     *
     * @return
     * @throws SQLException
     */
    private Connection getCon() throws SQLException {
        Connection connection = null;
        String driverClass = "oracle.jdbc.driver.OracleDriver";
        String url = "jdbc:oracle:thin:@127.0.0.1:1521:idc";
        String username = "idc";
        String password = "idc";
        try {
            Class.forName(driverClass);
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        connection = DriverManager.getConnection(url, username, password);

        return connection;
    }

    /**
     * 关闭连接
     *
     * @param rs
     * @param pStmt1
     * @param con
     */
    public static void closeCon(ResultSet rs, PreparedStatement pStmt,
            Connection con) {
        try {
            if (rs != null)
                rs.close();
        } catch (Exception e) {
            logger.error("close rs,error:", e);
            e.printStackTrace();
        }
        try {
            if (pStmt != null)
                pStmt.close();
        } catch (Exception e) {
            logger.error("close pStmt,error:", e);
            e.printStackTrace();
        }
        try {
            if (con != null)
                con.close();
        } catch (Exception e) {
            logger.error("close con,error:", e);
            e.printStackTrace();
        }
    }

}