今天調試了rt的問題，由于比較粗心導致了下班才調好，哎，可不能這樣了！

具體做法是：

eucalyptu訪問walrus時默認是http協議，端口號為8773。

而jets3t的配置腳本中http占用了8773，https占用了8443，所以利用java程序導入8443端口號對應的證書時是錯誤的，因為端口號與桉樹訪問walrus時不一致，所以當然訪問不了了。

所以把jets3t的http的8773注釋掉，將https的端口號改為8773，注意，ip要對應，就是這里浪費了很多時間！

重啟，OK！

java程序方法如下：

當java客戶端請求實現https協議的服務時，出現異常：'unable to find valid certification path to requested target'

是因為服務期端的證書沒有被認證，需要做的是把服務端證書導入到java keystore。可以用附件中的java類實現。

使用方法：

＃java InstallCert web_site_hostname：port

這個java類會打開一個連接到你指定的host，開始握手過程。如果出現異常會打印到控制臺并且會顯示服務端所使用的證書，此時它會問你是否要把證書加入到你的keystore。如果你不想加，輸入"q",否則輸入"1".

當你輸入"1"后，InstallCert.java會顯示證書的有關信息，然后把證書導入到一個名為"jssecacerts"的keystore中(當前目錄），只需要把這個文件拷貝到$JAVA_HOME/jre/lib/security目錄中，重命名為"cacerts".

程序如下：

import java.io.*;
import java.net.URL;

?

import java.security.*;
import java.security.cert.*;

import javax.net.ssl.*;

public class InstallCert {

public static void main(String[] args) throws Exception {
String host;
int port;
char[] passphrase;
if ((args.length == 1) || (args.length == 2)) {
String[] c = args[0].split(":");
host = c[0];
port = (c.length == 1) ? 443 : Integer.parseInt(c[1]);
String p = (args.length == 1) ? "changeit" : args[1];
passphrase = p.toCharArray();
} else {
System.out.println("Usage: java InstallCert <host>[:port] [passphrase]");
return;
}

File file = new File("jssecacerts");
if (file.isFile() == false) {
char SEP = File.separatorChar;
File dir = new File(System.getProperty("java.home") + SEP
+ "lib" + SEP + "security");
file = new File(dir, "jssecacerts");
if (file.isFile() == false) {
file = new File(dir, "cacerts");
}
}
System.out.println("Loading KeyStore " + file + "...");
InputStream in = new FileInputStream(file);
KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
ks.load(in, passphrase);
in.close();

SSLContext context = SSLContext.getInstance("TLS");
TrustManagerFactory tmf =
TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(ks);
X509TrustManager defaultTrustManager = (X509TrustManager)tmf.getTrustManagers()[0];
SavingTrustManager tm = new SavingTrustManager(defaultTrustManager);
context.init(null, new TrustManager[] {tm}, null);
SSLSocketFactory factory = context.getSocketFactory();

System.out.println("Opening connection to " + host + ":" + port + "...");
SSLSocket socket = (SSLSocket)factory.createSocket(host, port);
socket.setSoTimeout(10000);
try {
System.out.println("Starting SSL handshake...");
socket.startHandshake();
socket.close();
System.out.println();
System.out.println("No errors, certificate is already trusted");
} catch (SSLException e) {
System.out.println();
e.printStackTrace(System.out);
}

X509Certificate[] chain = tm.chain;
if (chain == null) {
System.out.println("Could not obtain server certificate chain");
return;
}

BufferedReader reader =
new BufferedReader(new InputStreamReader(System.in));

System.out.println();
System.out.println("Server sent " + chain.length + " certificate(s):");
System.out.println();
MessageDigest sha1 = MessageDigest.getInstance("SHA1");
MessageDigest md5 = MessageDigest.getInstance("MD5");
for (int i = 0; i < chain.length; i++) {
X509Certificate cert = chain[i];
System.out.println
(" " + (i + 1) + " Subject " + cert.getSubjectDN());
System.out.println(" Issuer " + cert.getIssuerDN());
sha1.update(cert.getEncoded());
System.out.println(" sha1 " + toHexString(sha1.digest()));
md5.update(cert.getEncoded());
System.out.println(" md5 " + toHexString(md5.digest()));
System.out.println();
}

System.out.println("Enter certificate to add to trusted keystore or 'q' to quit: [1]");
String line = reader.readLine().trim();
int k;
try {
k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1;
} catch (NumberFormatException e) {
System.out.println("KeyStore not changed");
return;
}

X509Certificate cert = chain[k];
String alias = host + "-" + (k + 1);
ks.setCertificateEntry(alias, cert);

OutputStream out = new FileOutputStream("jssecacerts");
ks.store(out, passphrase);
out.close();

System.out.println();
System.out.println(cert);
System.out.println();
System.out.println
("Added certificate to keystore 'jssecacerts' using alias '"
+ alias + "'");
}

private static final char[] HEXDIGITS = "0123456789abcdef".toCharArray();

private static String toHexString(byte[] bytes) {
StringBuilder sb = new StringBuilder(bytes.length * 3);
for (int b : bytes) {
b &= 0xff;
sb.append(HEXDIGITS[b >> 4]);
sb.append(HEXDIGITS[b & 15]);
sb.append(' ');
}
return sb.toString();
}

private static class SavingTrustManager implements X509TrustManager {

private final X509TrustManager tm;
private X509Certificate[] chain;

SavingTrustManager(X509TrustManager tm) {
this.tm = tm;
}

public X509Certificate[] getAcceptedIssuers() {
throw new UnsupportedOperationException();
}

public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
throw new UnsupportedOperationException();
}

public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
this.chain = chain;
tm.checkServerTrusted(chain, authType);
}
}

}

?

另一種方法如下：

＃keytool -import -keystore $JAVA_HOME/jre/lib/security/cacerts? -file server.crt -alias myservercrt

剛才試驗了這種方法，結果是可行的，就是導入clc對應的證書文件即可。keytool的默認密碼為changeit。

KO！

轉載于:https://www.cnblogs.com/chinacloud/archive/2010/09/27/1837005.html

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