ValidatorException: PKIX path building failed: 缺少客户端证书

在配置测试环境的时候报告unable to find valid certification path to requested target错误。

Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.Java:323)
    at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:217)
    at sun.security.validator.Validator.validate(Validator.java:218)
    at com.sun.NET.ssl.internal.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:126)
    at com.sun.Net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:209)
    at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:249)
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1185)
    ... 47 more

缺少客户端证书：

1 .创建一个Java 类

[java]  view plain  copy

 print ?

 /*
  * 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;
     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 [: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);
     }
     }

 }

2. 命令行编译 ：

切换到类所在路径，"javac  InstallCert.java"   (javac 命令不可用的话，添加 jdk 环境变量，java8的安装不用环境变量就能用 Java --version)

3. 生成证书：

使用方法： java InstallCert [:port] [passphrase]    这个有问题 ( 有时候提示错误 ),其实 直接写host 就行

4.输入1 ： 看清楚提示 ，q 直接退出了 ，  输入“1”。

5.文件夹下会生成一个文件 “”，然后这个文件拷贝到 JAVA_HOME/jre/lib/security目录中，重命名为"cacerts"。 以防万一 把原来的 文件 从命名哈。