mysql PreparedStatement executeBatch SQL语句的问题

今天在使用executeBatch时，使用一个很简单的表

CREATE TABLE IF NOT EXISTS `fnbl_dummy` (
`id` varchar(32) NOT NULL,
`userid` bigint(20) NOT NULL,
`last_update` bigint(20) NOT NULL,
`status` char(1) NOT NULL,
`p_content` varchar(200) NULL DEFAULT '',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

做批量插入

String SQL_INSERT_INTO_FNBL_DUMMY = "INSERT INTO fnbl_dummy(id,userid,last_update,status,p_content) VALUES (?,?,?,?,?);";
Connection con = null;
PreparedStatement ps = null;
try {
con = getUserDataSource().getRoutedConnection(userId);
con.setAutoCommit(false);
ps = con.prepareStatement(SQL_INSERT_INTO_FNBL_DUMMY);

for (DummyWrapper item : items) {
Timestamp lastUpdate = item.getLastUpdate();
if (lastUpdate == null) {
lastUpdate = new Timestamp(System.currentTimeMillis());
}

ps.setString(1, item.getId());
ps.setLong(2, Long.parseLong(this.userId));
ps.setLong(3, lastUpdate.getTime());
ps.setString(4, String.valueOf(Def.PIM_STATE_NEW));
ps.setString(5, StringUtils.left(item.getContent(), SQL_LASTNAME_DIM));
ps.addBatch();
}

int []len = ps.executeBatch();
con.commit();
return len.length;
} catch (Exception e) {
log.error(e.toString());
throw new DAOException("Error adding dummy items.", e);
} finally {
DBTools.close(con, ps, null);
}

结果运行是单条测试一直OK，多条测试一直提示“java.sql.BatchUpdateException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ”，查找原因竟然是因为SQL语句最后的";"分号问题，无语