Java 将文件添加到ZIP文件
我试图将一些文件添加到ZIP文件中,它创建了该文件,但没有向其中添加任何内容。 代码1: 我的职能:Java 将文件添加到ZIP文件,java,zip,directory,fileinputstream,zipoutputstream,Java,Zip,Directory,Fileinputstream,Zipoutputstream,我试图将一些文件添加到ZIP文件中,它创建了该文件,但没有向其中添加任何内容。 代码1: 我的职能: public static void zipFolder(File folder, String name) throws Exception { byte[] buffer = new byte[18024]; ZipOutputStream out = new ZipOutputStream(new FileOutputStream(name)); FileInpu
public static void zipFolder(File folder, String name) throws Exception {
byte[] buffer = new byte[18024];
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(name));
FileInputStream in = new FileInputStream(folder);
out.putNextEntry(new ZipEntry(name));
int len;
while((len = in.read(buffer)) > 0) {
out.write(buffer, 0, len);
}
out.closeEntry();
in.close();
out.close();
}
编辑:我发现了问题,它只是在将文件从C:\drive写入F:\drive的ZIP文件时遇到了问题您无法压缩文件夹,只能压缩文件。要压缩文件夹,必须手动添加所有子文件。我写了这个课程来做这个工作。您可以免费使用:) 用法如下:
List<File> sources = new ArrayList<File>();
sources.add(tobackup);
Packager.packZip(new File(zipName), sources);
List sources=new ArrayList();
来源。添加(tobackup);
packZip(新文件(zipName),源代码);
下面是课堂:
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;
import java.util.zip.Deflater;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
public class Packager
{
public static void packZip(File output, List<File> sources) throws IOException
{
System.out.println("Packaging to " + output.getName());
ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(output));
zipOut.setLevel(Deflater.DEFAULT_COMPRESSION);
for (File source : sources)
{
if (source.isDirectory())
{
zipDir(zipOut, "", source);
} else
{
zipFile(zipOut, "", source);
}
}
zipOut.flush();
zipOut.close();
System.out.println("Done");
}
private static String buildPath(String path, String file)
{
if (path == null || path.isEmpty())
{
return file;
} else
{
return path + "/" + file;
}
}
private static void zipDir(ZipOutputStream zos, String path, File dir) throws IOException
{
if (!dir.canRead())
{
System.out.println("Cannot read " + dir.getCanonicalPath() + " (maybe because of permissions)");
return;
}
File[] files = dir.listFiles();
path = buildPath(path, dir.getName());
System.out.println("Adding Directory " + path);
for (File source : files)
{
if (source.isDirectory())
{
zipDir(zos, path, source);
} else
{
zipFile(zos, path, source);
}
}
System.out.println("Leaving Directory " + path);
}
private static void zipFile(ZipOutputStream zos, String path, File file) throws IOException
{
if (!file.canRead())
{
System.out.println("Cannot read " + file.getCanonicalPath() + " (maybe because of permissions)");
return;
}
System.out.println("Compressing " + file.getName());
zos.putNextEntry(new ZipEntry(buildPath(path, file.getName())));
FileInputStream fis = new FileInputStream(file);
byte[] buffer = new byte[4092];
int byteCount = 0;
while ((byteCount = fis.read(buffer)) != -1)
{
zos.write(buffer, 0, byteCount);
System.out.print('.');
System.out.flush();
}
System.out.println();
fis.close();
zos.closeEntry();
}
}
导入java.io.File;
导入java.io.FileInputStream;
导入java.io.FileOutputStream;
导入java.io.IOException;
导入java.util.List;
导入java.util.zip.Deflater;
导入java.util.zip.ZipEntry;
导入java.util.zip.ZipoutStream;
公营包装商
{
公共静态void packZip(文件输出,列表源)引发IOException
{
System.out.println(“打包到”+output.getName());
ZipOutputStream zipOut=newzipoutpstream(newfileoutputstream(output));
zipOut.setLevel(Deflater.DEFAULT_压缩);
用于(文件源:源)
{
if(source.isDirectory())
{
zipDir(zipOut,“,来源);
}否则
{
zipFile(zipOut,“”,来源);
}
}
齐平();
zipOut.close();
系统输出打印项次(“完成”);
}
私有静态字符串构建路径(字符串路径、字符串文件)
{
if(path==null | | path.isEmpty())
{
返回文件;
}否则
{
返回路径+“/”+文件;
}
}
私有静态void zipDir(ZipOutputStream zos、字符串路径、文件目录)引发IOException
{
如果(!dir.canRead())
{
System.out.println(“无法读取”+dir.getCanonicalPath()+“(可能是因为权限)”);
返回;
}
File[]files=dir.listFiles();
path=buildPath(path,dir.getName());
System.out.println(“添加目录”+路径);
用于(文件源:文件)
{
if(source.isDirectory())
{
zipDir(zos、路径、源);
}否则
{
zipFile(zos、路径、源);
}
}
System.out.println(“离开目录”+路径);
}
私有静态void zipFile(ZipOutputStream zos、字符串路径、文件文件)引发IOException
{
如果(!file.canRead())
{
System.out.println(“无法读取”+file.getCanonicalPath()+“(可能是因为权限问题)”);
返回;
}
System.out.println(“压缩”+file.getName());
putNextEntry(新的ZipEntry(buildPath(path,file.getName()));
FileInputStream fis=新的FileInputStream(文件);
字节[]缓冲区=新字节[4092];
int字节数=0;
while((字节计数=fis.read(缓冲区))!=-1)
{
写入(缓冲区,0,字节数);
系统输出打印('.');
System.out.flush();
}
System.out.println();
fis.close();
zos.closeEntry();
}
}
享受吧
编辑:要检查程序是否仍然忙,可以添加我用(*)标记的三行
编辑2:尝试新代码。在我的平台上,它运行正常(OSX)。我不确定,但在AppData中,Windows中的文件可能有一些有限的读取权限。您不能压缩文件夹,只能压缩文件。要压缩文件夹,必须手动添加所有子文件。我写了这个课程来做这个工作。您可以免费使用:) 用法如下:
List<File> sources = new ArrayList<File>();
sources.add(tobackup);
Packager.packZip(new File(zipName), sources);
List sources=new ArrayList();
来源。添加(tobackup);
packZip(新文件(zipName),源代码);
下面是课堂:
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;
import java.util.zip.Deflater;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
public class Packager
{
public static void packZip(File output, List<File> sources) throws IOException
{
System.out.println("Packaging to " + output.getName());
ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(output));
zipOut.setLevel(Deflater.DEFAULT_COMPRESSION);
for (File source : sources)
{
if (source.isDirectory())
{
zipDir(zipOut, "", source);
} else
{
zipFile(zipOut, "", source);
}
}
zipOut.flush();
zipOut.close();
System.out.println("Done");
}
private static String buildPath(String path, String file)
{
if (path == null || path.isEmpty())
{
return file;
} else
{
return path + "/" + file;
}
}
private static void zipDir(ZipOutputStream zos, String path, File dir) throws IOException
{
if (!dir.canRead())
{
System.out.println("Cannot read " + dir.getCanonicalPath() + " (maybe because of permissions)");
return;
}
File[] files = dir.listFiles();
path = buildPath(path, dir.getName());
System.out.println("Adding Directory " + path);
for (File source : files)
{
if (source.isDirectory())
{
zipDir(zos, path, source);
} else
{
zipFile(zos, path, source);
}
}
System.out.println("Leaving Directory " + path);
}
private static void zipFile(ZipOutputStream zos, String path, File file) throws IOException
{
if (!file.canRead())
{
System.out.println("Cannot read " + file.getCanonicalPath() + " (maybe because of permissions)");
return;
}
System.out.println("Compressing " + file.getName());
zos.putNextEntry(new ZipEntry(buildPath(path, file.getName())));
FileInputStream fis = new FileInputStream(file);
byte[] buffer = new byte[4092];
int byteCount = 0;
while ((byteCount = fis.read(buffer)) != -1)
{
zos.write(buffer, 0, byteCount);
System.out.print('.');
System.out.flush();
}
System.out.println();
fis.close();
zos.closeEntry();
}
}
导入java.io.File;
导入java.io.FileInputStream;
导入java.io.FileOutputStream;
导入java.io.IOException;
导入java.util.List;
导入java.util.zip.Deflater;
导入java.util.zip.ZipEntry;
导入java.util.zip.ZipoutStream;
公营包装商
{
公共静态void packZip(文件输出,列表源)引发IOException
{
System.out.println(“打包到”+output.getName());
ZipOutputStream zipOut=newzipoutpstream(newfileoutputstream(output));
zipOut.setLevel(Deflater.DEFAULT_压缩);
用于(文件源:源)
{
if(source.isDirectory())
{
zipDir(zipOut,“,来源);
}否则
{
zipFile(zipOut,“”,来源);
}
}
齐平();
zipOut.close();
系统输出打印项次(“完成”);
}
私有静态字符串构建路径(字符串路径、字符串文件)
{
if(path==null | | path.isEmpty())
{
返回文件;
}否则
{
返回路径+“/”+文件;
}
}
私有静态void zipDir(ZipOutputStream zos、字符串路径、文件目录)引发IOException
{
如果(!dir.canRead())
{
System.out.println(“无法读取”+dir.getCanonicalPath()+“(可能是因为权限)”);
返回;
}
File[]files=dir.listFiles();
path=buildPath(path,dir.getName());
System.out.println(“添加目录”+路径);
用于(文件源:文件)
{
if(source.isDirectory())
{
zipDir(zos、路径、源);
}否则
{
zipFile(zos、路径、源);
}
}
System.out.println(“离开目录”+路径);
}
私有静态void zipFile(ZipOutputStream zos、字符串路径、文件文件)引发IOException
{
如果(!file.canRead())
{
System.out.println(“无法读取”+文件.getCanonicalPath()+”