我最近一直试图自动化我制作的程序,我遇到了一个问题,robot.mouseMove(100,100)不会将鼠标发送到100,100.
我做了这个简单的程序来展示这个:
new Robot().mouseMove(100, 100);
System.out.println(MouseInfo.getPointerInfo().getLocation().getX() + " , "
+ MouseInfo.getPointerInfo().getLocation().getY());
每次运行时,此代码都会产生不同的结果:
54.0 , 54.0
0.0 , 0.0
58.0 , 58.0
当你把它放在一个循环中时,鼠标接近正确的位置.代码:
Robot b = new Robot();
for (int i = 1; i < 10; i++) {
b.mouseMove(100, 100);
System.out.println("Attempt "+i+" : "+MouseInfo.getPointerInfo().getLocation().getX() + " , "
+ MouseInfo.getPointerInfo().getLocation().getY());
}
结果:
Attempt 1 : 12.0 , 21.0
Attempt 2 : 143.0 , 139.0
Attempt 3 : 79.0 , 81.0
Attempt 4 : 110.0 , 109.0
Attempt 5 : 96.0 …我正在安装一个Hadoop集群,当我启动服务并使用JPS时,我在namenode中得到了这个结果.
[hadoop@hadoop-master Desktop]$ jps
5450 ResourceManager
5292 SecondaryNameNode
5708 Jps
5103 NameNode
这在Datanode
2662 DataNode
2877Jps
2772 NodeManager
但仍然我的DataNode没有运行或已配置.AdminReport显示了这一点
15/12/21 01:12:58 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Configured Capacity: 0 (0 B)
Present Capacity: 0 (0 B)
DFS Remaining: 0 (0 B)
DFS Used: 0 (0 B)
DFS Used%: NaN%
Under replicated blocks: 0
Blocks with corrupt replicas: 0
Missing blocks: 0
我的配置有什么问题？