如何解决sun.security.provider.certpath.SunCertPathBuilderException？

import java.io.FileInputStream;
import java.io.IOException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;

public class ImportCertificate {
    public static void main(String[] args) {
        try {
            // 创建一个新的KeyStore实例
            KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());

            // 加载KeyStore
            keyStore.load(null, null);

            // 导入证书
            FileInputStream fileInputStream = new FileInputStream("path/to/certificate.crt");
            keyStore.setCertificateEntry("alias", keyStore.load(fileInputStream));
            fileInputStream.close();

            // 保存KeyStore
            FileOutputStream fileOutputStream = new FileOutputStream("path/to/truststore.jks");
            keyStore.store(fileOutputStream, "password".toCharArray());
            fileOutputStream.close();
        } catch (KeyStoreException | NoSuchAlgorithmException | CertificateException | IOException e) {
            e.printStackTrace();
        }
    }
}