Question

我正在尝试将Java代码加载到Oracle SQL开发人员。在加载java时，我从我的hdd（来自NetBeans目标文件夹）中选择Java源代码，我得到以下错误。有什么帮助吗？

这是代码。它在NetBeans中运行良好，我试图在.java文件中的SQL Developer中加载它

package c2_01_signhelloworld;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.security.Security;
import java.security.cert.Certificate;

import org.bouncycastle.jce.provider.BouncyCastleProvider;

import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfSignatureAppearance;
import com.itextpdf.text.pdf.PdfStamper;
import com.itextpdf.text.pdf.security.BouncyCastleDigest;
import com.itextpdf.text.pdf.security.DigestAlgorithms;
import com.itextpdf.text.pdf.security.ExternalDigest;
import com.itextpdf.text.pdf.security.ExternalSignature;
import com.itextpdf.text.pdf.security.MakeSignature;
import com.itextpdf.text.pdf.security.MakeSignature.CryptoStandard;
import com.itextpdf.text.pdf.security.PrivateKeySignature;

public class C2_01_SignHelloWorld {

    public static final String KEYSTORE = "C:/Users/kranjcevicb/Documents/itext/2/ks";
    public static final char[] PASSWORD = "password".toCharArray();
    public static final String SRC = "C:/Users/kranjcevicb/Documents/itext/2/unsigned1.pdf";
    public static final String DEST = "C:/Users/kranjcevicb/Documents/itext/2/unsigned1_signed.pdf";

    public void sign(String src, String dest,
            Certificate[] chain,
            PrivateKey pk, String digestAlgorithm, String provider,
            CryptoStandard subfilter,
            String reason, String location)
                    throws GeneralSecurityException, IOException, DocumentException {
        // Creating the reader and the stamper
        PdfReader reader = new PdfReader(src);
        FileOutputStream os = new FileOutputStream(dest);
        PdfStamper stamper = PdfStamper.createSignature(reader, os, '\0');
        // Creating the appearance
        PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
        appearance.setReason(reason);
        appearance.setLocation(location);
        appearance.setVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");
        // Creating the signature
        ExternalDigest digest = new BouncyCastleDigest();
        ExternalSignature signature = new PrivateKeySignature(pk, digestAlgorithm, provider);
        MakeSignature.signDetached(appearance, digest, signature, chain, null, null, null, 0, subfilter);
    }

    public static void main(String[] args) throws GeneralSecurityException, IOException, DocumentException {
        BouncyCastleProvider provider = new BouncyCastleProvider();
        Security.addProvider(provider);
        KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
        ks.load(new FileInputStream(KEYSTORE), PASSWORD);
        String alias = (String)ks.aliases().nextElement();
        PrivateKey pk = (PrivateKey) ks.getKey(alias, PASSWORD);
        Certificate[] chain = ks.getCertificateChain(alias);
        C2_01_SignHelloWorld app = new C2_01_SignHelloWorld();
        app.sign(SRC, String.format(DEST, 1), chain, pk, DigestAlgorithms.SHA256, provider.getName(), CryptoStandard.CMS, "Test 1", "Ghent");
        app.sign(SRC, String.format(DEST, 2), chain, pk, DigestAlgorithms.SHA512, provider.getName(), CryptoStandard.CMS, "Test 2", "Ghent");
        app.sign(SRC, String.format(DEST, 3), chain, pk, DigestAlgorithms.SHA256, provider.getName(), CryptoStandard.CADES, "Test 3", "Ghent");
        app.sign(SRC, String.format(DEST, 4), chain, pk, DigestAlgorithms.RIPEMD160, provider.getName(), CryptoStandard.CADES, "Test 4", "Ghent");
    }
}

Answer 1

我在使用sqldeveloper中的左窗格java选项加载java类时遇到了同样的问题。但是，当我尝试使用下面的代码加载java时，它就解决了

@ConfigurationProperties("foo")
public class FooProperties {

private boolean enabled;

private InetAddress remoteAddress;

private final Security security = new Security();

public boolean isEnabled() { ... }

public void setEnabled(boolean enabled) { ... }

public InetAddress getRemoteAddress() { ... }

public void setRemoteAddress(InetAddress remoteAddress) { ... }

public Security getSecurity() { ... }

public static class Security {

    private String username;

    private String password;

    private List<String> roles = new ArrayList<>(Collections.singleton("USER"));

    public String getUsername() { ... }

    public void setUsername(String username) { ... }

    public String getPassword() { ... }

    public void setPassword(String password) { ... }

    public List<String> getRoles() { ... }

    public void setRoles(List<String> roles) { ... }

}

Oracle SQL Developer加载Java错误

1 个答案: