加载jar中包含的资源

URL resourceUrl = getClass().getResource("/path/to/resource.txt");

InputStream inputStream = getClass().getResourceAsStream("/path/to/resource.txt");

ZipInputStream zipInputStream = new ZipInputStream(new FileInputStream("path/to/jarfile.jar"));
ZipEntry zipEntry;
while ((zipEntry = zipInputStream.getNextEntry()) != null) {
    if (zipEntry.getName().equals("path/to/resource.txt")) {
        // 读取资源
    }
}

InputStream inputStream = getClass().getResourceAsStream("/path/to/resource.txt");
Scanner scanner = new Scanner(inputStream);
StringBuilder stringBuilder = new StringBuilder();
while (scanner.hasNextLine()) {
    stringBuilder.append(scanner.nextLine());
}
String resourceString = stringBuilder.toString();