java prepare_Java Connection.prepareStatement方法代码示例

import com.mysql.jdbc.Connection; //导入方法依赖的package包/类

@Override

public int execute(MapleClient c, String[] splitted) {

if (splitted.length < 1) {

c.getPlayer().dropMessage(6, “!pnpc “);

return 0;

}

int npcId = Integer.parseInt(splitted[1]);

MapleNPC npc = MapleLifeFactory.getNPC(npcId);

if (npc != null && !npc.getName().equals(“MISSINGNO”)) {

final int xpos = c.getPlayer().getPosition().x;

final int ypos = c.getPlayer().getPosition().y;

final int fh = c.getPlayer().getMap().getFootholds().findBelow(c.getPlayer().getPosition()).getId();

npc.setPosition(c.getPlayer().getPosition());

npc.setCy(ypos);

npc.setRx0(xpos);

npc.setRx1(xpos);

npc.setFh(fh);

npc.setCustom(true);

try {

Connection con = (Connection) DatabaseConnection.getConnection();

try (PreparedStatement ps = (PreparedStatement) con.prepareStatement(“INSERT INTO wz_customlife (dataid, f, hide, fh, cy, rx0, rx1, type, x, y, mid) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)”)) {

ps.setInt(1, npcId);

ps.setInt(2, 0); // 1 = right , 0 = left

ps.setInt(3, 0); // 1 = hide, 0 = show

ps.setInt(4, fh);

ps.setInt(5, ypos);

ps.setInt(6, xpos);

ps.setInt(7, xpos);

ps.setString(8, “n”);

ps.setInt(9, xpos);

ps.setInt(10, ypos);

ps.setInt(11, c.getPlayer().getMapId());

ps.executeUpdate();

}

} catch (SQLException e) {

c.getPlayer().dropMessage(6, “Failed to save NPC to the net.db.”);

}

c.getPlayer().getMap().addMapObject(npc);

c.getPlayer().getMap().broadcastMessage(NPCPacket.spawnNPC(npc, true));

c.getPlayer().dropMessage(6, “Please do not reload this map or else the NPC will disappear untill the next restart.”);

} else {

c.getPlayer().dropMessage(6, “You have entered an invalid npc id.”);

return 0;

}

return 1;

}