小编Abb*_*bas的帖子

以下代码仅删除它在Web目录中获取的第一个文件.我想删除web目录中的所有文件和文件夹并保留web目录.我怎样才能做到这一点？

  - name: remove web dir contents
     file: path='/home/mydata/web/{{ item }}' state=absent
     with_fileglob:
       - /home/mydata/web/*

注意:我尝试过rm -rf使用命令和shell,但它们不起作用.也许我错误地使用它们.

任何正确方向的帮助将不胜感激.

我使用的是ansible 2.1.0.0

我在http://eclipse.geekyramblings.net/2010/12/14/preventing-multiple-instances/上阅读了有关如何防止启动RCP的多个实例的信息.但是当我制作我的RCP(它是一个基于"Hello RCP"模板的简单RCP)可执行文件并尝试启动它时,它会抛出我的错误

java.io.IOException: The location has not been set.
    at org.eclipse.core.runtime.internal.adaptor.BasicLocation.lock(BasicLocation.java:174)
    at testrcp.Application.start(Application.java:43)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1407)

我正在为Web开发人员使用Eclipse Java EE IDE.

版本:Helios Service Release 1 Build id:20100917-0705

这是我的Application.java文件中的代码

package testrcp;

import org.eclipse.core.runtime.Platform;
import org.eclipse.equinox.app.IApplication;
import org.eclipse.equinox.app.IApplicationContext;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.osgi.service.datalocation.Location;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.PlatformUI;

/**
 * This class controls all …

我有一个线程，可以通过调用Canvas控件的redraw方法来对gif图像进行动画处理。但是会观察到图像闪烁。我尝试使用SWT.NO_REDRAW_RESIZE样式位，但没有帮助。

下面是线程的运行代码

while (!UIManager.stop){
                long currentTime = System.currentTimeMillis();
                int delayTime = UIManager.loader.data[UIManager.imageNumber].delayTime;
                while(currentTime + delayTime * 10 > System.currentTimeMillis()){
                  // Wait till the delay time has passed

                }

                UIManager.imageNumber = UIManager.imageNumber == UIManager.loader.data.length-1 ? 0 : UIManager.imageNumber+1;



                display.asyncExec(new Runnable() {                                      
                    @Override
                    public void run() {
                        // TODO Auto-generated method stub

                        if(!UIManager.stop){
                        UIManager.image = new Image(display, UIManager.loader.data[UIManager.imageNumber] );

                        if(!UIManager.gifCanvas.isDisposed())
                            UIManager.gifCanvas.redraw();

                        }
                    }
                });

画布绘制侦听器如下

gifCanvas = new Canvas(gifComposite,SWT.NO_REDRAW_RESIZE);
        gifCanvas.setBackground(display.getSystemColor(SWT.COLOR_BLACK));
        gifCanvas.setLayoutData(introGifData);
        gifCanvas.addPaintListener(new PaintListener() {
            public void paintControl(PaintEvent e) {                
                e.gc.drawImage(image,0,0);
                }
        }); …