与支持java中的ssl的服务器通信

时间:2014-06-02 11:07:40

标签: java ssl

我对sslConnectionin java有一个问题,我在下面编写了客户端代码(这个应用程序必须连接到服务器,我有支持ssl的服务器)但我得到这个错误“javax.net.ssl.SSLException:Connection has已关闭:javax.net.ssl.SSLHandshakeException:sun.security.validator.ValidatorException:PKIX路径构建失败:sun.security.provider.certpath.SunCertPathBuilderException:无法找到所请求目标的有效证书路径“

如何解决我的问题?

  public static void main(String[] args)  {
              BufferedReader in = new BufferedReader(
                 new InputStreamReader(System.in));
              PrintStream out = System.out;
              SSLSocketFactory f = 
                 (SSLSocketFactory) SSLSocketFactory.getDefault();
              try {
                 SSLSocket c =
                   (SSLSocket) f.createSocket("192.168.10.38", 7701);
                   printSocketInfo(c);
                   System.out.println("End printSocketInfo");
                   c.startHandshake();
                   System.out.println("HandShake oK");

                   BufferedWriter w = new BufferedWriter(
                    new OutputStreamWriter(c.getOutputStream()));
                   BufferedReader r = new BufferedReader(
                    new InputStreamReader(c.getInputStream()));
                   String m = null;
                // String m=
                 while ((m=r.readLine())!= null) {
                     System.out.println("11111");
                    out.println(m);
                    m = in.readLine();
                    System.out.println("M is:  "+ m);
                    w.write(m,0,m.length());
                    w.newLine();
                    w.flush();
                 }
                 w.close();
                 r.close();
                 c.close();
              } catch (IOException e) {
                 System.err.println(e.toString());
              }



 }

     private static void printSocketInfo(SSLSocket s) {
          System.out.println("Socket class: "+s.getClass());
          System.out.println("   Remote address = "
             +s.getInetAddress().toString());
          System.out.println("   Remote port = "+s.getPort());
          System.out.println("   Local socket address = "
             +s.getLocalSocketAddress().toString());
          System.out.println("   Local address = "
             +s.getLocalAddress().toString());
          System.out.println("   Local port = "+s.getLocalPort());
          System.out.println("   Need client authentication = "
             +s.getNeedClientAuth());
          SSLSession ss = s.getSession();
          System.out.println("   Cipher suite = "+ss.getCipherSuite());
          System.out.println("   Protocol = "+ss.getProtocol());
       }

我有证书文件,如何使用此证书?

最好的问候

2 个答案:

答案 0 :(得分:1)

您必须将HTTPS证书放入JVM。要从HTTPS获取证书,请浏览浏览器,然后单击地址栏上的“锁定”徽标。您应该能够导出证书。

Linux解决方案:在$ JAVA_HOME / jre / lib / security中,使用以下命令:

sudo keytool -import -alias keyName -file /[pathForYourKey]/keyName.cert -keystore cacerts

“cacerts”的默认密码是changeit。

答案 1 :(得分:1)

是自签名证书

如果是,那么您有两种选择 第一选择:

在Global Java Certificate Trust store中导入证书颁发机构证书。这家商店位于

%Java Installation%/jre/lib/security/cacerts

要导入它,您可以使用Java安装附带的Keytool命令

keytool -import -alias keyName -file yourcertificate.crt -keystore cacerts

优势:

  • 无需修改代码。
  • 易于部署

缺点:

  • cacert文件将在下一次java更新中被覆盖。你必须 再次进口证书。
  • 需要管理权限(在Linux和Windows上)

第二个选项:

如果您想绕过证书验证,请按照Java: Overriding function to disable SSL certificate check

进行操作

否则 为您的程序创建新的Trust商店

keytool -import -alias keyName -file yourcertificate.crt -keystore yourtruststore

此命令将要求输入密码两次。输入您想要的任何密码并输入"是"对于任何问题 将在当前目录中按名称" yourtruststore"

创建一个文件

现在您需要在程序中使用此信任库

SSLSocketFactory sslFactory = null;
InputStream trustStore = null;
KeyStore keyStore = null;
trustStore = new FileInputStream("<your trust store absolute path>");
keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
keyStore.load(trustStore, "<your trust store password>".toCharArray());
TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(keyStore);
SSLContext ctx = SSLContext.getInstance("TLS");
ctx.init(null, tmf.getTrustManagers(), null);
sslFactory = ctx.getSocketFactory();

您可以使用此套接字工厂打开新套接字