我创建了一个带有主键并启用的表AUTO_INCREMENT,如何使用MYSQL AUTO_INCREMENT？
CREATE TABLE IF NOT EXISTS test.authors (
hostcheck_id INT PRIMARY KEY AUTO_INCREMENT,
instance_id INT,
host_object_id INT,
check_type INT,
is_raw_check INT,
current_check_attempt INT,
max_check_attempts INT,
state INT,
state_type INT,
start_time datetime,
start_time_usec INT,
end_time datetime,
end_time_usec INT,
command_object_id INT,
command_args VARCHAR(25),
command_line VARCHAR(100),
timeout int,
early_timeout INT,
execution_time DEC(18,5),
latency DEC(18,3),
return_code INT,
output VARCHAR(50),
long_output VARCHAR(50),
perfdata VARCHAR(50)
);
这是我使用的查询,我已尝试""和"1"作为第一个值,但它不起作用.
INSERT INTO test.authors VALUES ('1','1','67','0','0','1','10','0','1',
'2012-01-03 12:50:49','108929','2012-01-03 12:50:59','198963','21','',
'/usr/local/nagios/libexec/check_ping 5','30','0','4.04159','0.102','1',
'PING WARNING -DUPLICATES FOUND! Packet …我想从结束到开始我的文件的相反方向读取文件,
[1322110800] LOG ROTATION: DAILY
[1322110800] LOG VERSION: 2.0
[1322110800] CURRENT HOST STATE:arsalan.hussain;DOWN;HARD;1;CRITICAL - Host Unreachable (192.168.1.107)
[1322110800] CURRENT HOST STATE: localhost;UP;HARD;1;PING OK - Packet loss = 0%, RTA = 0.06 ms
[1322110800] CURRENT HOST STATE: musewerx-72c7b0;UP;HARD;1;PING OK - Packet loss = 0%, RTA = 0.27 ms
我用代码以这种方式阅读它,
String strpath="/var/nagios.log";
FileReader fr = new FileReader(strpath);
BufferedReader br = new BufferedReader(fr);
String ch;
int time=0;
String Conversion="";
do {
ch = br.readLine();
out.print(ch+"<br/>");
} while (ch != null);
fr.close();
我更喜欢使用缓冲读取器以相反的顺序读取
嗨我需要PING使用Java代码执行命令并获取ping主机的摘要.怎么用Java做？
我的代码在这里,我得到的结果是真的还是假的,它可以直接映射到我提到的主机,
try
{
InetAddress address = InetAddress.getByName("192.168.1.125");
boolean reachable=address.isReachable(10000));
out.print(PingHost.DrawTable());
out.print("Is host reachable? " + reachable);
}
catch(Exception e)
{
out.print(e.printStackTrace());
}
我想计算它尝试ping主机的次数,如果第一次没有完全ping成功并且ping的最大数量为10将是10
希望你的建议
提前致谢