我正在尝试使用Java压缩文件。我的要求是压缩任何东西，这意味着，
您几乎可以在包括winzip在内的所有压缩程序中看到上述要求。
以下是我的尝试。
Compress.java
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
/**
*
* @author user
*/
public class Compress
{
private List<String> fileList;
private static final String SOURCE_FOLDER = ExpressWizard.filePath.getPath();
private static final String OUTPUT_ZIP_FILE = ExpressWizard.destination.getPath();
public Compress()
{
fileList = new ArrayList<String>();
System.out.println(SOURCE_FOLDER + "\n");
System.out.println(OUTPUT_ZIP_FILE);
}
public Compress(File[] list)
{
fileList = new ArrayList<String>();
System.out.println(SOURCE_FOLDER + "\n");
System.out.println(OUTPUT_ZIP_FILE);
}
public void zipIt(String zipFile, File[] list)
{
byte[] buffer = new byte[1024];
String source = "";
ZipOutputStream zos=null;
try
{
FileOutputStream fos = new FileOutputStream(zipFile);
zos = new ZipOutputStream(fos);
for (int i = 0; i < list.length; i++)
{
String SOURCE_FOLDER = list[i].getPath();
try
{
source = SOURCE_FOLDER.substring(SOURCE_FOLDER.lastIndexOf("\\") + 1, SOURCE_FOLDER.length());
} catch (Exception e)
{
source = SOURCE_FOLDER;
}
System.out.println("Output to Zip : " + zipFile);
FileInputStream in = null;
for (String file : this.fileList)
{
System.out.println("File Added : " + file);
ZipEntry ze = new ZipEntry(source + File.separator + file);
zos.putNextEntry(ze);
try
{
in = new FileInputStream(SOURCE_FOLDER + File.separator + file);
int len;
while ((len = in.read(buffer)) > 0)
{
zos.write(buffer, 0, len);
}
} finally
{
in.close();
}
}
}
zos.closeEntry();
System.out.println("Folder successfully compressed");
} catch (IOException ex)
{
ex.printStackTrace();
} finally
{
try
{
zos.close();
} catch (IOException e)
{
e.printStackTrace();
}
}
}
public void generateFileList(File node)
{
// add file only
if (node.isFile())
{
System.out.println("File executed");
fileList.add(generateZipEntry(node.toString()));
}
if (node.isDirectory())
{
System.out.println("Folder executed");
String[] subNote = node.list();
for (String filename : subNote)
{
generateFileList(new File(node, filename));
}
}
}
public void generateFileList(File[] node)
{
for (int i = 0; i < node.length; i++)
{
// add file only
if (node[i].isFile())
{
System.out.println("File executed");
fileList.add(generateZipEntry(node.toString()));
}
if (node[i].isDirectory())
{
System.out.println("Folder executed");
String[] subNote = node[i].list();
for (String filename : subNote)
{
generateFileList(new File(node[i], filename));
}
}
}
}
private String generateZipEntry(String file)
{
return file.substring(SOURCE_FOLDER.length() + 1, file.length());
}
}
这就是我们如何称呼上述课程。
ExpressWizard.java
private void backUpButtonActionPerformed(java.awt.event.ActionEvent evt)
{
try
{
Compress compress = new Compress();
if (CompressType.ZIP==zip)
{
compress.generateFileList(serlectFiles);
System.out.println(destination.getPath());
compress.zipIt(destination.getPath(),serlectFiles);
}
} catch (Exception ex)
{
JOptionPane.showMessageDialog(this, "Error in creating a zip compression ! ");
ex.printStackTrace();
}
}
此代码生成以下错误
java.io.FileNotFoundException: C:\Users\user\Desktop\contact\drivingLicense.png (The system cannot find the file specified)
at java.io.FileInputStream.open0(Native Method)
at java.io.FileInputStream.open(FileInputStream.java:195)
at java.io.FileInputStream.<init>(FileInputStream.java:138)
at java.io.FileInputStream.<init>(FileInputStream.java:93)
at com.theace.backupsystem.compression.Compress.zipIt(Compress.java:138)
at com.theace.backupsystem.view.ExpressWizard.backUpButtonActionPerformed(ExpressWizard.java:2781)
at com.theace.backupsystem.view.ExpressWizard.access$5900(ExpressWizard.java:31)
at com.theace.backupsystem.view.ExpressWizard$40.actionPerformed(ExpressWizard.java:2021)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2346)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6525)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6290)
at java.awt.Container.processEvent(Container.java:2234)
at java.awt.Component.dispatchEventImpl(Component.java:4881)
at java.awt.Container.dispatchEventImpl(Container.java:2292)
at java.awt.Component.dispatchEvent(Component.java:4703)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4898)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4533)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4462)
at java.awt.Container.dispatchEventImpl(Container.java:2278)
at java.awt.Window.dispatchEventImpl(Window.java:2750)
at java.awt.Component.dispatchEvent(Component.java:4703)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:751)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:702)
at java.awt.EventQueue$3.run(EventQueue.java:696)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:724)
at java.awt.EventQueue$4.run(EventQueue.java:722)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:721)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:109)
at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:184)
at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:229)
at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:227)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:227)
at java.awt.Dialog.show(Dialog.java:1084)
at java.awt.Component.show(Component.java:1654)
at java.awt.Component.setVisible(Component.java:1606)
at java.awt.Window.setVisible(Window.java:1014)
at java.awt.Dialog.setVisible(Dialog.java:1005)
at com.theace.backupsystem.view.HomePanel.clickPanel01MouseClicked(HomePanel.java:653)
at com.theace.backupsystem.view.HomePanel.access$000(HomePanel.java:16)
at com.theace.backupsystem.view.HomePanel$1.mouseClicked(HomePanel.java:120)
at java.awt.Component.processMouseEvent(Component.java:6528)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6290)
at java.awt.Container.processEvent(Container.java:2234)
at java.awt.Component.dispatchEventImpl(Component.java:4881)
at java.awt.Container.dispatchEventImpl(Container.java:2292)
at java.awt.Component.dispatchEvent(Component.java:4703)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4898)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4542)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4462)
at java.awt.Container.dispatchEventImpl(Container.java:2278)
at java.awt.Window.dispatchEventImpl(Window.java:2750)
at java.awt.Component.dispatchEvent(Component.java:4703)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:751)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:702)
at java.awt.EventQueue$3.run(EventQueue.java:696)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:724)
at java.awt.EventQueue$4.run(EventQueue.java:722)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:721)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
当我们选择多个文件夹时，基本上会发生错误。错误是正确的，它表示drivingLicense.png不在C:\Users\user\Desktop\contact\路径中。是的，它是C:\Users\user\Desktop\screens\，它是我选择的另一个文件夹。
上面的代码似乎搞乱了路径，我该如何解决？
除此之外，我们如何安排这些代码来压缩我描述为“要求”的文件，文件夹等？
答案 0 :(得分：1)
你的问题是你忘了＆＃34;子文件夹的目录名称：
private String generateZipEntry(String file)
{
return file.substring(SOURCE_FOLDER.length() + 1, file.length());
}
这将始终为目录SOURCE_FOLDER中的文件创建条目。但是你递归地叫generateFileList()：
if (node[i].isDirectory())
{
System.out.println("Folder executed");
String[] subNote = node[i].list();
for (String filename : subNote)
{
// here, you pass a subdirectory, but in
// generateZipEntry() you always append
// filename to SOURCE_FOLDER, and not the
// directoy the file is in
generateFileList(new File(node[i], filename));
}
}
您应该将directoy和filename（或更好的File对象）传递给generateZipEntry。