在 String path= properties.getProperty("PRIVATE") 获取空值；

Question

这是我的代码。我正在尝试使用数字签名电子令牌对 pdf 进行签名。

public static String PATH = "C:/Documents and Settings/Administrator/Desktop/New.properties";
    /** Some properties used when signing. */
    public static Properties properties = new Properties();

New.properties 文件是：

PUBLIC     C:/Documents and Settings/Administrator/Desktop/public.cer
ROOTCERT    c:/examples/signatures/CACertSigningAuthority.crt
PRIVATE     c:/examples/signatures/private.p12
PASSWORD    123456

但是在代码中我从 properties 中得到了 null。代码在这里：

    String path = properties.getProperty("PRIVATE");
    String keystore_password = properties.getProperty("PASSWORD");
    String key_password = properties.getProperty("PASSWORD");`

我得到路径，keystore_password，key_password 为空。那里有什么错误？

Answer 1

您必须使用以下方法加载属性文件：

properties.load(new FileInputStream(PATH));

Answer 2

您需要按如下方式加载属性文件：-

Properties properties = new Properties();
properties.load(new FileInputStream(YOUR_PATH));

Answer 3

只需添加 = 登录属性文件，例如：-

PUBLIC = C:/Documents and Settings/Administrator/Desktop/public.cer
ROOTCERT = C:/examples/signatures/CACertSigningAuthority.crt
PRIVATE = C:/examples/signatures/private.p12
PASSWORD = 123456

在 String path= properties.getProperty("PRIVATE") 获取空值；

Get null at String path= properties.getProperty("PRIVATE");

java

digital-signature