把Https网站中的安全证书导入到java的cacerts证书库中

有两种方式

 

一.

Untitled如何把Https网站中的安全证书导入到java中的cacerts证书库中？在项目开发中,有时会遇到与SSL安全证书导入打交道的，如何把证书导入java中的cacerts证书库呢？
其实很简单，方法如下：
每一步：进入某个https://www.xxx.com开头的网站,把要导入的证书下载过来，
在该网页上右键
>> 属性 >> 点击"证书" >>
再点击上面的"详细信息"切换栏
>>
再点击右下角那个"复制到文件"的按钮
就会弹出一个证书导出的向导对话框，按提示一步一步完成就行了。
例如：保存为abc.cer,放在C盘下
 
第二步：如何把上面那步的(abc.cer)这个证书导入java中的cacerts证书库里?
方法如下
假设你的jdk安装在C:\jdk1.5这个目录，
开始
>> 运行 >> 输入cmd 进入dos命令行 >>
再用cd进入到C:\jdk1.5\jre\lib\security这个目录下
敲入如下命令回车执行
       keytool -import -alias cacerts -keystore %java_home%\jre\lib\security\cacerts -file C:\abc.cer -trustcacerts 
 　　　 此时命令行会提示你输入cacerts证书库的密码，
你敲入changeit就行了，这是java中cacerts证书库的默认密码，
你自已也可以修改的。

 

 

 

 

 

 

二.

/*
 * Copyright 2006 Sun Microsystems, Inc.  All Rights
Reserved.
 *
 * Redistribution and use in source and binary
forms, with or without
 * modification, are permitted provided that the
following conditions
 * are met:
 *
 *   -
Redistributions of source code must retain the above
copyright
 *     notice, this list of conditions and
the following disclaimer.
 *
 *   - Redistributions in
binary form must reproduce the above
copyright
 *     notice, this list of conditions and
the following disclaimer in the
 *     documentation
and/or other materials provided with the
distribution.
 *
 *   - Neither the name of Sun
Microsystems nor the names of its
 *    
contributors may be used to endorse or promote products
derived
 *     from this software without specific
prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE
COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE
DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 *
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 *
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 *
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
DAMAGE.
 */ 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;
 //传如参数 192.168.84.84:443 changeit
 if ((args.length
== 1) || (args.length == 2)) {
     String[] c =
args[0].split(":");
     host =
c[0];
     //默认取443端口
     port =
(c.length == 1) ? 443 : Integer.parseInt(c[1]);
    
//默认密码为changeit
     String p = (args.length == 1) ?
"changeit" : args[1];
     passphrase =
p.toCharArray();
 } else {
    
System.out.println("Usage: java InstallCert <host>[:port]
[passphrase]");
     return;
 }  //创建jssecacerts文件
 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);
 //默认使用JKS的KEYSTORE TYPE
 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);
 }
    } }