在java中使用ProcessBuilder提取7zip cmd
使用Java 10 ProcessBuilder和带有命令行的7z.exe(18.05)将归档文件提取到所需类别时遇到问题。当我使用Windows CMD时,该命令与预期的完全相同,但当我的JavaFX应用程序使用ProcessBuilder发出时,该命令不再起作用:在java中使用ProcessBuilder提取7zip cmd,java,cmd,extract,processbuilder,7zip,Java,Cmd,Extract,Processbuilder,7zip,使用Java 10 ProcessBuilder和带有命令行的7z.exe(18.05)将归档文件提取到所需类别时遇到问题。当我使用Windows CMD时,该命令与预期的完全相同,但当我的JavaFX应用程序使用ProcessBuilder发出时,该命令不再起作用: public static void decompress7ZipEmbedded(File source, File destination) throws IOException, InterruptedExcepti
public static void decompress7ZipEmbedded(File source, File destination) throws IOException, InterruptedException {
ProcessBuilder pb = new ProcessBuilder(
getSevenZipExecutablePath(),
EXTRACT_WITH_FULL_PATHS_COMMAND,
quotifyPath(source.getAbsolutePath()),
OUTPUT_DIRECTORY_SWITCH + quotifyPath(destination.getAbsolutePath())
);
processWithSevenZipEmbedded(pb);
}
private static void processWithSevenZipEmbedded(ProcessBuilder pb) throws IOException, InterruptedException {
LOG.info("7-zip command issued: " + String.join(" ", pb.command()));
Process p = pb.start();
new Thread(new InputConsumer(p.getInputStream())).start();
System.out.println("Exited with: " + p.waitFor());
}
public static class InputConsumer implements Runnable {
private InputStream is;
InputConsumer(InputStream is) {
this.is = is;
}
@Override
public void run() {
try {
int value = -1;
while ((value = is.read()) != -1) {
System.out.print((char) value);
}
} catch (IOException exp) {
exp.printStackTrace();
}
LOG.debug("Output stream completed");
}
}
public static String getSevenZipExecutablePath() {
return FileUtil.quotifyPath(getDirectory() + "7z" + "/" + "7z");
}
public static String quotifyPath(String path) {
return '"' + path + '"';
}
public class Commands {
public static final String EXTRACT_COMMAND = "e";
public static final String EXTRACT_WITH_FULL_PATHS_COMMAND = "x";
public static final String PACK_COMMAND = "a";
public static final String DELETE_COMMAND = "d";
public static final String BENCHMARK_COMMAND = "b";
public static final String LIST_COMMAND = "l";
}
public class Switches {
public static final String OUTPUT_DIRECTORY_SWITCH = "-o";
public static final String RECURSIVE_SWITCH = "-r";
public static final String ASSUME_YES = "y";
}
7-Zip 18.05 (x64) : Copyright (c) 1999-2018 Igor Pavlov : 2018-04-30
Scanning the drive for archives:
1 file, 59177077 bytes (57 MiB)
Extracting archive: D:\Pulpit\AppRack Sandbox\test\Something\Something 2\Something2.7z
--
Path = D:\Pulpit\AppRack Sandbox\test\Something\Something 2\Something2.7z
Type = 7z
Physical Size = 5917Exited with: 0
7077
Headers Size = 373
Method = LZMA2:26 LZMA:20 BCJ2
Solid = +
Blocks = 2
No files to process
Everything is Ok
Files: 0
Size: 0
Compressed: 59177077
该命令如下所示:
"C:/Users/blood/java_projects/AppRack/target/classes/7z/7z" x "D:\Pulpit\AppRack Sandbox\test\something\Something 2\Something2.7z" -o"D:\Pulpit\AppRack Sandbox\Something2"
C:/Users/blood/java_projects/AppRack/target/classes/7z/7z" x D:\Pulpit\AppRack Sandbox\test\Test\Test 2\Test.7z -oD:\Desktop\AppRack Sandbox\Test 2 -aoa
以及ProcessBuilder的输出:
public static void decompress7ZipEmbedded(File source, File destination) throws IOException, InterruptedException {
ProcessBuilder pb = new ProcessBuilder(
getSevenZipExecutablePath(),
EXTRACT_WITH_FULL_PATHS_COMMAND,
quotifyPath(source.getAbsolutePath()),
OUTPUT_DIRECTORY_SWITCH + quotifyPath(destination.getAbsolutePath())
);
processWithSevenZipEmbedded(pb);
}
private static void processWithSevenZipEmbedded(ProcessBuilder pb) throws IOException, InterruptedException {
LOG.info("7-zip command issued: " + String.join(" ", pb.command()));
Process p = pb.start();
new Thread(new InputConsumer(p.getInputStream())).start();
System.out.println("Exited with: " + p.waitFor());
}
public static class InputConsumer implements Runnable {
private InputStream is;
InputConsumer(InputStream is) {
this.is = is;
}
@Override
public void run() {
try {
int value = -1;
while ((value = is.read()) != -1) {
System.out.print((char) value);
}
} catch (IOException exp) {
exp.printStackTrace();
}
LOG.debug("Output stream completed");
}
}
public static String getSevenZipExecutablePath() {
return FileUtil.quotifyPath(getDirectory() + "7z" + "/" + "7z");
}
public static String quotifyPath(String path) {
return '"' + path + '"';
}
public class Commands {
public static final String EXTRACT_COMMAND = "e";
public static final String EXTRACT_WITH_FULL_PATHS_COMMAND = "x";
public static final String PACK_COMMAND = "a";
public static final String DELETE_COMMAND = "d";
public static final String BENCHMARK_COMMAND = "b";
public static final String LIST_COMMAND = "l";
}
public class Switches {
public static final String OUTPUT_DIRECTORY_SWITCH = "-o";
public static final String RECURSIVE_SWITCH = "-r";
public static final String ASSUME_YES = "y";
}
7-Zip 18.05 (x64) : Copyright (c) 1999-2018 Igor Pavlov : 2018-04-30
Scanning the drive for archives:
1 file, 59177077 bytes (57 MiB)
Extracting archive: D:\Pulpit\AppRack Sandbox\test\Something\Something 2\Something2.7z
--
Path = D:\Pulpit\AppRack Sandbox\test\Something\Something 2\Something2.7z
Type = 7z
Physical Size = 5917Exited with: 0
7077
Headers Size = 373
Method = LZMA2:26 LZMA:20 BCJ2
Solid = +
Blocks = 2
No files to process
Everything is Ok
Files: 0
Size: 0
Compressed: 59177077
它没有任何作用。没有创建所需的文件夹,没有。使用CMD,它就像一个符咒一样工作(这里使用相同的命令从Windows 10 CMD登录):
你知道是什么导致了这里的差异吗?为什么它说“没有文件要处理,一切正常”,而不做任何事情?我已经尝试过首先使用File类创建一个文件夹,但似乎没有问题,因为在提取之前,无论目标文件夹是否存在,结果都是相同的
我已经尝试了所有我想到的方法,现在我的想法都没有了。请与我分享关于这个问题的任何建议。非常感谢。非常感谢您的帮助
不要引用你的论点。引号用于命令shell。ProcessBuilder不是命令shell;它直接执行命令,因此任何引号都被视为参数本身(即文件名)的一部分。另外,pb.inheritIO();是查看子进程输出的更好方法,而不是手动使用进程流 谢谢@VGR,这似乎是问题所在-在我删除了上述命令中引用路径的方法之后,它就像一个符咒一样工作,并且提取归档文件没有任何问题!所以结论是,在使用Java ProcessBuilder时,我不应该在路径中使用引号 我还使用了pb.inheritIO(),您是对的,用这种方式管理它会更好、更容易
public static void decompress7ZipEmbedded(File source, File destination) throws IOException {
ProcessBuilder pb = new ProcessBuilder().inheritIO().command(
getSevenZipExecutablePath(),
EXTRACT_WITH_FULL_PATHS_COMMAND,
source.getAbsolutePath(),
OUTPUT_DIRECTORY_SWITCH + destination.getAbsolutePath(),
OVERWRITE_WITHOUT_PROMPT
);
processWithSevenZipEmbedded(pb);
}
private static void processWithSevenZipEmbedded(ProcessBuilder pb) throws IOException {
LOG.info("7-zip command issued: " + String.join(" ", pb.command()));
pb.start();
}
public class Commands {
public static final String EXTRACT_WITH_FULL_PATHS_COMMAND = "x";
}
public class Switches {
public static final String OUTPUT_DIRECTORY_SWITCH = "-o";
public static final String OVERWRITE_WITHOUT_PROMPT = "-aoa";
}
双击文件7zip.chm或启动7-Zip并打开帮助并阅读帮助页面命令行版本-第一行7z[…]的语法[…]。我们已经清楚地解释过,首先必须指定命令x,其次应该是像-o这样的开关,最好的最后一个开关是--,然后是存档文件名和最后一个参数,比如要提取的文件/文件夹的名称。也可以在存档文件名之后指定开关,但不建议这样做,尽管帮助页上的-o示例末尾也带有-o
谢谢@Mofi提供的提示。我使用了-aoa开关而不是-y开关,它最终开始按我所希望的那样工作——在没有任何提示的情况下覆盖文件。我让命令的其余部分按照预期的方式工作,因此它最终看起来是这样的:
"C:/Users/blood/java_projects/AppRack/target/classes/7z/7z" x "D:\Pulpit\AppRack Sandbox\test\something\Something 2\Something2.7z" -o"D:\Pulpit\AppRack Sandbox\Something2"
C:/Users/blood/java_projects/AppRack/target/classes/7z/7z" x D:\Pulpit\AppRack Sandbox\test\Test\Test 2\Test.7z -oD:\Desktop\AppRack Sandbox\Test 2 -aoa
再次感谢您的帮助 不要引用你的论点。引号用于命令shell。ProcessBuilder不是命令shell;它直接执行命令,因此任何引号都被视为参数本身(即文件名)的一部分。另外,
pb.inheritIO()
是查看子进程输出的更好方法,而不是手动使用进程流。双击文件7zip.chm
或启动7-Zip,打开帮助并阅读帮助页面命令行版本-第一行语法7z[…][…]
。我们清楚地解释了,首先必须指定命令x
,然后是开关,如-o
,最好的最后一个开关是--
,然后是存档文件名和最后一个参数,如要提取的文件/文件夹的名称。也可以在存档文件名之后指定开关,但不建议这样做,尽管-o
的帮助页上的示例末尾也带有-o
。