记一次因证书问题导致请求失败问题SSLHandshakeException

转载请注明出处：https://www.cnblogs.com/funnyzpc/p/10989813.html

最近接一外部接口，接口在本地开发调试及测试都无任何问题(windows下)，而上测试环境后测第一次就直接报错误，

错误是这样子的：

javax.net.ssl.SSLHandshakeException: 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.ssl.Alerts.getSSLException(Alerts.java:192)

        at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1917)

        at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:301)

        at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:295)

        at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1369)

        at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:156)

        at sun.security.ssl.Handshaker.processLoop(Handshaker.java:925)

        at sun.security.ssl.Handshaker.process_record(Handshaker.java:860)

        at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1043)

        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1343)

        at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1371)

        at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1355)

enn~,首先那个接口地址是https的，服务器是linux的；以上错误其大意是无法找到及验证有效证书，再想想：不对啊，本地jdk和服务器的jdk都是oracle官方jdk 1.8呀，照理说

本地调试没问题在服务端应该也不会有什么问题呢～

诶～，不管怎么分析都还是要解决问题呀，首先我分析到这又两个问题点：

本地和服务器OS不一致
接口地址的SSL证书存在不兼容或其他问题

怎么办？要求对方检查证书配置，可能性不大，剩下的就只剩下一种方式：做兼容，就是在请求的时候信任对方的证书。

于是有了第一版。

因为我使用的是CloseableHttpClient，做的请求管理，不如在让CloseableHttpClient兼容https与http不就好了，寻思一项，搜索一番代码即成

(这里只给出核心代码)

    // 之前

    // private static CloseableHttpClient httpClient = HttpClients.custom().build();

    // 之后

    private static CloseableHttpClient httpClient;

    static {

        try {

            System.out.println("===>01");

            // 忽略证书

            SSLContextBuilder SslBuilder = new SSLContextBuilder().loadTrustMaterial(null, new TrustSelfSignedStrategy());

            //不进行主机名验证

            SSLConnectionSocketFactory sslConnectionSocketFactory = new SSLConnectionSocketFactory(SslBuilder.build(), NoopHostnameVerifier.INSTANCE);

            Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()

                    .register("http", new PlainConnectionSocketFactory())

                    .register("https", sslConnectionSocketFactory)

                    .build();

            PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager(registry);

            cm.setMaxTotal(100);

            httpClient = HttpClients.custom()

                    .setSSLSocketFactory(sslConnectionSocketFactory)

                    .setDefaultCookieStore(new BasicCookieStore())

                    .setConnectionManager(cm).build();

        } catch (Exception e) {

            e.printStackTrace();

            System.out.println("===>02");

            httpClient = HttpClients.custom().build();

        }

    }

bingo ～，上线测。。。

oh～，no，依然是这个错：

javax.net.ssl.SSLHandshakeException: 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.ssl.Alerts.getSSLException(Alerts.java:192)

        ......

待我分析一番，发现上面的代码仅仅只是为了不验证对方主机，完全没有理会证书的错误。。。欸～，这是个问题。

后我又想起之前上上家公司也有出现过这个问题，哈～，有办法了，找到源码把主要的几句copy过来走走不就好了。

于是，第二版

核心代码：



HostnameVerifier hv = new HostnameVerifier() {

        public boolean verify(String urlHostName, SSLSession session) {

            return true;

        }

    };

 private static void trustAllHttpsCertificates() throws Exception {

     javax.net.ssl.TrustManager[] trustAllCerts = new javax.net.ssl.TrustManager[1];

     javax.net.ssl.TrustManager tm = new miTM();

     trustAllCerts[0] = tm;

     javax.net.ssl.SSLContext sc = javax.net.ssl.SSLContext

     .getInstance("SSL");

     sc.init(null, trustAllCerts, null);

     javax.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(sc

     .getSocketFactory());

 }

 static class miTM implements javax.net.ssl.TrustManager,

 javax.net.ssl.X509TrustManager {

     public java.security.cert.X509Certificate[] getAcceptedIssuers() {

     return null;

 }

 public boolean isServerTrusted(

     java.security.cert.X509Certificate[] certs) {

     return true;

 }

 public boolean isClientTrusted(

     java.security.cert.X509Certificate[] certs) {

     return true;

 }

 public void checkServerTrusted(

     java.security.cert.X509Certificate[] certs, String authType)

     throws java.security.cert.CertificateException {

     return;

 }

 public void checkClientTrusted(

     java.security.cert.X509Certificate[] certs, String authType)

     throws java.security.cert.CertificateException {

        return;

     }

 }

 // 在访问前调用

 trustAllHttpsCertificates();

 HttpsURLConnection.setDefaultHostnameVerifier(hv);

一整折腾后上线部署测试，啊～，还是同样的错误。。。

分析代码，看到，这种处理逻辑只针对自定义SSL证书有效，对于我现有的情况丁点问题都解决不了

终版

其实业务代码的什么都没改，只是给jdk添加了点儿东西。

主要解决思路是让jdk忽略指定域名的SSL证书。

//InstallCert.java

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);

    }

    }

}

具体解决步骤：

编译文件
- javac InstallCert.java
添加信任
- java InstallCert 域名地址
上传证书(需手动将网站证书导出)
- rz => 证书.cer
导入证书(密码：changeit)
- echo $JAVA_HOME
- keytool -import -alias LL1 -keystore $JAVA_HOME/jre/lib/security/cacerts -file /home/证书.cer

巴特西

记一次因证书问题导致请求失败问题SSLHandshakeException