java.lang.IllegalArgumentException:URI不是分层可执行jar文件[重复]

Question

我搜索了我的问题的解决方案，但找不到答案。
在客户端服务器聊天应用程序中，客户端希望获取存储在Server.cer文件中的服务器公钥。

URL resource = this.getClass().getClassLoader().getResource("Server.cer");
File file = new File(resource.toURI());
FileInputStream fileInputStream = new FileInputStream(file);
BufferedInputStream bufferedInputStream = new BufferedInputStream(fileInputStream);
CertificateFactory cf = CertificateFactory.getInstance("X.509");
while(bufferedInputStream.available() > 0){
    certificate = cf.generateCertificate(bufferedInputStream);
}
publicKey = certificate.getPublicKey();

当我在Eclipse中运行我的类时，这可以正常工作，但是当我将其导出为可执行的jar文件时，我得到：

java.lang.IllegalArgumentException: URI is not hierarchical

你能帮我解决这个问题吗，因为我需要可执行jar文件才能工作。

Answer 1

我设法解决了这个问题。我是这样做的。

    Certificate certificate = null;

    //Get server's public key which is stored in a file called Server.cer (RSA-1024 bit).
    InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream("Server.cer");
    BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);
    CertificateFactory cf = CertificateFactory.getInstance("X.509");
    while(bufferedInputStream.available() > 0){
        certificate = cf.generateCertificate(bufferedInputStream);
    }
    publicKey = certificate.getPublicKey();

    bufferedInputStream.close();
    inputStream.close();