Java MessageHeader.print方法代码示例

import sun.net.www.MessageHeader; //导入方法依赖的package包/类
/**
 * Given a manifest entry, computes the signature entry for this
 * manifest entry.
 */
private MessageHeader computeEntry(MessageHeader mh) throws IOException {
    MessageHeader smh = new MessageHeader();

    String name = mh.findValue("Name");
    if (name == null) {
        return null;
    }
    smh.set("Name", name);

    try {
        for (int i = 0; i < hashes.length; ++i) {
            MessageDigest dig = getDigest(hashes[i]);
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            PrintStream ps = new PrintStream(baos);
            mh.print(ps);
            byte[] headerBytes = baos.toByteArray();
            byte[] digest = dig.digest(headerBytes);
            smh.set(hashes[i] + "-Digest", Base64.getMimeEncoder().encodeToString(digest));
        }
        return smh;
    } catch (NoSuchAlgorithmException e) {
        throw new JarException(e.getMessage());
    }
}
 

import sun.net.www.MessageHeader; //导入方法依赖的package包/类
/**
 * Add a signature file at current position in a stream
 */
public void stream(OutputStream os) throws IOException {

    /* the first header in the file should be the global one.
     * It should say "SignatureFile-Version: x.x"; barf if not
     */
    MessageHeader globals = entries.elementAt(0);
    if (globals.findValue("Signature-Version") == null) {
        throw new JarException("Signature file requires " +
                        "Signature-Version: 1.0 in 1st header");
    }

    PrintStream ps = new PrintStream(os);
    globals.print(ps);

    for (int i = 1; i < entries.size(); ++i) {
        MessageHeader mh = entries.elementAt(i);
        mh.print(ps);
    }
}
 

import sun.net.www.MessageHeader; //导入方法依赖的package包/类
public void stream(OutputStream os) throws IOException {

        PrintStream ps;
        if (os instanceof PrintStream) {
            ps = (PrintStream) os;
        } else {
            ps = new PrintStream(os);
        }

        /* the first header in the file should be the global one.
         * It should say "Manifest-Version: x.x"; if not add it
         */
        MessageHeader globals = entries.elementAt(0);

        if (globals.findValue("Manifest-Version") == null) {
            /* Assume this is a user-defined manifest.  If it has a Name: <..>
             * field, then it is not global, in which case we just add our own
             * global Manifest-version: <version>
             * If the first MessageHeader has no Name: <..>, we assume it
             * is a global header and so prepend Manifest to it.
             */
            String jdkVersion = System.getProperty("java.version");

            if (globals.findValue("Name") == null) {
                globals.prepend("Manifest-Version", VERSION);
                globals.add("Created-By", "Manifest JDK "+jdkVersion);
            } else {
                ps.print("Manifest-Version: "+VERSION+"\r\n"+
                         "Created-By: "+jdkVersion+"\r\n\r\n");
            }
            ps.flush();
        }

        globals.print(ps);

        for (int i = 1; i < entries.size(); ++i) {
            MessageHeader mh = entries.elementAt(i);
            mh.print(ps);
        }
    }