我有一个目录(带子目录)模板,它作为资源保存在jar文件中。运行期间当我需要将它(模板)提取到tmp-dir时,更改一些内容,并最终将其作为压缩工件发布。
我的问题是:如何轻松地提取这些内容?我正在尝试getResource()和getResourceAsStream()。。
以下代码在这里运行良好:(Java7)
String s = this.getClass().getResource("").getPath();
if (s.contains("jar!")) {
// we have a jar file
// format: file:/location...jar!...path-in-the-jar
// we only want to have location :)
int excl = s.lastIndexOf("!");
s = s.substring(0, excl);
s = s.substring("file:/".length());
Path workingDirPath = workingDir = Files.createTempDirectory("demo")
try (JarFile jf = new JarFile(s);){
Enumeration<JarEntry> entries = jf.entries();
while (entries.hasMoreElements()) {
JarEntry je = entries.nextElement();
String name = je.getName();
if (je.isDirectory()) {
// directory found
Path dir = workingDirPath.resolve(name);
Files.createDirectory(dir);
} else {
Path file = workingDirPath.resolve(name);
try (InputStream is = jf.getInputStream(je);) {
Files.copy(is, file, StandardCopyOption.REPLACE_EXISTING);
}
}
}
}
} else {
// debug mode: no jar
}