不幸的是——这可能是很多事情——很多应用服务器和其他java“包装器”都倾向于玩弄属性和他们自己的钥匙链等。所以它可能会看一些完全不同的东西。

少了桁架-我会试试:

java -Djavax.net.debug=all -Djavax.net.ssl.trustStore=trustStore ...

看看这是否有用。除了“all”，还可以将其设置为“ssl”，密钥管理器和信任管理器-这可能对您的情况有帮助。在大多数平台上，将它设置为“帮助”会列出如下内容。

无论如何，一定要确保您完全理解密钥存储库(其中有您用来证明自己身份的私钥和证书)和信任存储库(它决定您信任谁)之间的区别，以及您自己的身份也有一个到根的信任“链”，这与您需要确定您信任“谁”的根的任何链是分开的。

all            turn on all debugging
ssl            turn on ssl debugging

The   following can be used with ssl:
    record       enable per-record tracing
    handshake    print each handshake message
    keygen       print key generation data
    session      print session activity
    defaultctx   print default SSL initialization
    sslctx       print SSLContext tracing
    sessioncache print session cache tracing
    keymanager   print key manager tracing
    trustmanager print trust manager tracing
    pluggability print pluggability tracing

    handshake debugging can be widened with:
    data         hex dump of each handshake message
    verbose      verbose handshake message printing

    record debugging can be widened with:
    plaintext    hex dump of record plaintext
    packet       print raw SSL/TLS packets

来源:#见http://download.oracle.com/javase/1.5.0/docs/guide/security/jsse/JSSERefGuide.html#Debug

您需要配置JSSE系统属性，特别是指向客户端证书存储。

通过命令行:

java -Djavax.net.ssl.trustStore=truststores/client.ts com.progress.Client

或者通过Java代码:

import java.util.Properties;
    ...
    Properties systemProps = System.getProperties();
    systemProps.put("javax.net.ssl.keyStorePassword","passwordForKeystore");
    systemProps.put("javax.net.ssl.keyStore","pathToKeystore.ks");
    systemProps.put("javax.net.ssl.trustStore", "pathToTruststore.ts");
    systemProps.put("javax.net.ssl.trustStorePassword","passwordForTrustStore");
    System.setProperties(systemProps);
    ...

更多详情请参阅RedHat网站。

这里是解决方案，按照下面的链接一步一步:

http://www.mkyong.com/webservices/jax-ws/suncertpathbuilderexception-unable-to-find-valid-certification-path-to-requested-target/

JAVA文件:博客中缺少的文件

/*
 * 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 <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);
    }
    }

}

I had the same problem with sbt. It tried to fetch dependencies from repo1.maven.org over ssl but said it was "unable to find valid certification path to requested target url". so I followed this post and still failed to verify a connection. So I read about it and found that the root cert is not enough, as was suggested by the post,so - the thing that worked for me was importing the intermediate CA certificates into the keystore. I actually added all the certificates in the chain and it worked like a charm.

我的问题是通过软件更新在我的工作笔记本电脑上安装了一个云访问安全代理NetSkope。这正在改变证书链，在将整个链导入到cacerts密钥存储库后，我仍然无法通过java客户端连接到服务器。我禁用了NetSkope，并且能够成功连接。

I am working on a tutorial for REST web services at www.udemy.com (REST Java Web Services). The example in the tutorial said that in order to have SSL, we must have a folder called "trust_store" in my eclipse "client" project that should contain a "key store" file (we had a "client" project to call the service, and "service" project that contained the REST web service - 2 projects in the same eclipse workspace, one the client, the other the service). To keep things simple, they said to copy "keystore.jks" from the glassfish app server (glassfish\domains\domain1\config\keystore.jks) we are using and put it into this "trust_store" folder that they had me make in the client project. That seems to make sense: the self-signed certs in the server's key_store would correspond to the certs in the client trust_store. Now, doing this, I was getting the error that the original post mentions. I have googled this and read that the error is due to the "keystore.jks" file on the client not containing a trusted/signed certificate, that the certificate it finds is self-signed.

为了让事情更清楚，让我说一下我理解的“密钥库”。“Jks”包含自签名的certs，以及“cacerts. Jks”。“jks”文件中包含CA证书(由CA签名)。“密钥存储库。Jks是“密钥存储库”，cacerts是“cacerts”。Jks”是“信任商店”。正如一位名叫“布鲁诺”的评论者所说，“密钥库。Jks是本地的，cacerts是本地的。Jks”用于远程客户端。

So, I said to myself, hey, glassfish also has the "cacerts.jks" file, which is glassfish's trust_store file. cacerts.jsk is supposed to contain CA certificates. And apparently I need my trust_store folder to contain a key store file that has at least one CA certificate. So, I tried putting the "cacerts.jks" file in the "trust_store" folder I had made, on my client project, and changing the VM properties to point to "cacerts.jks" instead of "keystore.jks". That got rid of the error. I guess all it needed was a CA cert to work.

这对于生产来说可能并不理想，甚至对于开发来说也不理想。例如，您可以使用“keytool”命令将CA证书添加到“密钥存储库”中。Jks”文件在客户端。但无论如何，希望这至少能缩小可能导致错误的情况。

另外:我的方法似乎对客户端有用(服务器证书添加到客户端trust_store)，看起来上面解决原始帖子的注释对服务器有用(客户端证书添加到服务器trust_store)。欢呼。

Eclipse项目设置:

MyClientProject src 测验 JRE系统库 .．. trust_store ——cacerts.jks ——keystore.jks

MyClientProject.java文件片段:

static {
  // Setup the trustStore location and password
  System.setProperty("javax.net.ssl.trustStore","trust_store/cacerts.jks");
  // comment out below line
  System.setProperty("javax.net.ssl.trustStore","trust_store/keystore.jks");
  System.setProperty("javax.net.ssl.trustStorePassword", "changeit");
  //System.setProperty("javax.net.debug", "all");

  // for localhost testing only
  javax.net.ssl.HttpsURLConnection.setDefaultHostnameVerifier(new javax.net.ssl.HostnameVerifier() {
        public boolean verify(String hostname, javax.net.ssl.SSLSession sslSession) {
          return hostname.equals("localhost");
        }

  });
}

(转载自我的其他回复) 使用java软件发行版中的cli实用工具keytool导入(并信任!)所需的证书

示例:

从命令行更改目录到jre\bin 检查密钥库(在jre\bin目录中找到的文件) Keytool -list -keystore ..\lib\security\cacerts . txt 密码为changeit 从需要的服务器下载并保存链中的所有证书。 添加证书(在需要删除文件..\lib\security\cacerts上的“只读”属性之前)，运行: keytool -alias REPLACE_TO_ANY_UNIQ_NAME -import -keystore.使用实例\lib\security\cacerts -file "r:\root.crt"

我偶然发现了这么一个简单的小窍门。 其他解决方案需要使用InstallCert.Java和JDK

来源:http://www.java-samples.com/showtutorial.php?tutorialid=210

检查$JAVA_HOME/lib/security/cacerts文件是否存在! 在我的情况下，它不是一个文件，而是一个到/etc/ssl/certs/java/cacerts的链接，而且这是一个到自身的链接(什么??)，因此JVM无法找到该文件。

解决方案: 复制真正的cacerts文件(你可以从另一个JDK)到/etc/ssl/certs/java/目录，它将解决你的问题:)

JDK 8迁移到JDK 10时的解决方案

证书是非常不同的 JDK 10有80个，而JDK 8有151个 JDK 10最近添加了certs https://dzone.com/articles/openjdk-10-now-includes-root-ca-certificates http://openjdk.java.net/jeps/319

JDK 10

root@c339504909345:/opt/jdk-minimal/jre/lib/security #  keytool -cacerts -list
Enter keystore password:
Keystore type: JKS
Keystore provider: SUN

Your keystore contains 80 entries

JDK 8

root@c39596768075:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/security/cacerts #  keytool -cacerts -list
Enter keystore password:
Keystore type: JKS
Keystore provider: SUN

Your keystore contains 151 entries

修复步骤

我删除了JDK 10证书，并将其替换为JDK 8 由于我正在构建Docker图像，我可以使用多阶段构建快速完成 我正在使用jlink作为/opt/jdk/bin/jlink \构建一个最小的JRE ——模块路径/ opt / jdk / jmods……

这里是不同的路径和命令的顺序…

# Java 8
COPY --from=marcellodesales-springboot-builder-jdk8 /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/security/cacerts /etc/ssl/certs/java/cacerts

# Java 10
RUN rm -f /opt/jdk-minimal/jre/lib/security/cacerts
RUN ln -s /etc/ssl/certs/java/cacerts /opt/jdk-minimal/jre/lib/security/cacerts

在我的例子中，我遇到了这个问题，因为在我的tomcat进程中，特定的密钥存储库是使用的

-Djavax.net.ssl.trustStore=/pathtosomeselfsignedstore/truststore.jks

当我将证书导入JRE/lib/security的cacert时，没有反映更改。 然后执行以下命令，其中/tmp/cert1。Test包含目标服务器的证书

keytool -import -trustcacerts -keystore /pathtosomeselfsignedstore/truststore.jks -storepass password123 -noprompt -alias rapidssl-myserver -file /tmp/cert1.test

可以再次检查证书导入是否成功

keytool -list -v -keystore /pathtosomeselfsignedstore/truststore.jks

并查看是否在别名rapidssl-myserver中找到您的taget服务器

在我的情况下，我得到错误连接到AWS Gov Postgres RDS。GOV RDS CA证书有一个单独的链接- https://s3.us-gov-west-1.amazonaws.com/rds-downloads/rds-combined-ca-us-gov-bundle.pem

将此pem certs添加到java的cacerts中。您可以使用下面的脚本。

——WINDOWDS步骤

使用VSCODE编辑器，安装openssl, keytool插件 在C:/rds-ca目录下创建目录 将“cacerts”文件和下面的脚本文件-“addCerts.sh”在目录“rd-ca” 运行vscode: 4.1 CD /c/rds-ca/ . 4.2。/ addCerts.sh 拷贝cacerts到${JAVA_HOME}/jre/lib/security目录下

脚本代码:

#!/usr/bin/env sh

OLDDIR="$PWD"

CACERTS_FILE=cacerts

cd /c/rds-ca

echo "Downloading RDS certificates..."

curl  https://s3.us-gov-west-1.amazonaws.com/rds-downloads/rds-combined-ca-us-gov-bundle.pem > rds-combined-ca-bundle.pem

csplit -sk rds-combined-ca-bundle.pem "/-BEGIN CERTIFICATE-/" "{$(grep -c 'BEGIN CERTIFICATE' rds-combined-ca-bundle.pem | awk '{print $1 - 2}')}"

for CERT in xx*; do
    # extract a human-readable alias from the cert
    ALIAS=$(openssl x509 -noout -text -in $CERT |
                   perl -ne 'next unless /Subject:/; s/.*CN=//; print')
    echo "importing $ALIAS"
    
    keytool -import \
            -keystore  $CACERTS_FILE \
            -storepass changeit -noprompt \
            -alias "$ALIAS" -file $CERT
done

cd "$OLDDIR"
echo "$NEWDIR"

我在试图从我的应用程序访问https url时遇到了这个错误，该应用程序正在使用自签名证书。 他们提供的是一个.cert文件，我不知道该把它放在哪里。我是这样解决的:

keytool的位置在JDK/bin文件夹下

方法1:将证书添加到默认的Java信任库- cacerts:

keytool -import -alias myCert -file C://certificate.cert -keystore C://Program Files//Java//jdk1.8.0_271//jre//lib//security//cacerts

密码:changeit

方法2:

创建信任存储:

keytool -import -alias myCert -file C://certificate.cert -keystore myTrustStore

它会给你以下提示，可以填充为:

Enter keystore password:changeit
Re-enter new password:changeit
Trust this certificate?yes

这将在运行此命令的文件夹中创建一个myTrustStore文件。 将这个“mytrustStore”复制到一个方便的位置。

使用信任存储:

当你运行你的应用程序/服务器时，传递这些JVM参数:

-Djavax.net.ssl.trustStore=C://myTrustStore -Djavax.net.ssl.trustStorePassword=changeit

在这个问题上浪费了很多时间。如果您导入了证书，您可以看到这里列出了它。

keytool -list -v -keystore $JAVA_HOME/lib/security/cacerts

然后创建新的文件，使用以下命令替换SITE_NAME、SITE_PORT、CERTIFICATE_NAME和保存文件的路径。

echo -n | openssl s_client -connect SITE_NAME:SITE_PORT  \
| openssl x509 > /path/to/save/CERTIFICATE_NAME.cert

就我而言，我在Spring中使用Keycloak时遇到了问题。在我用这个命令创建证书并导入到密钥存储库之后，问题就解决了，它可以正常工作

eclipse / Sts用户注意:

因为eclipse使用它自己的JRE，您应该将cert添加到它自己的JRE密钥存储库中。 我有这个问题，直到我添加certs到圣的JRE。

SSL日志:

`javax.net.ssl|DEBUG|1A|restartedMain|2021-12-06 23:04:00.874` IRST|TrustStoreManager.java:113|trustStore is: D:\sts-4.12.0.RELEASE\plugins\org.eclipse.justj.openjdk.hotspot.jre.full.win32.x86_64_16.0.2.v20210721-1149\jre\lib\security\cacerts
This is the full path: "sts-4.12.0.RELEASE\plugins\org.eclipse.justj.openjdk.hotspot.jre.full.win32.x86_64_16.0.2.v20210721-1149\jre\lib\security\cacerts"

我在我的windows 10笔记本电脑上创建了一个ubuntu，当我试图从https://github.com/yahoo/CMAK网站加载CMAK网站下载时遇到了问题。首先，它给出了致命的ssl错误。

openssl s_client -showcerts -servername github.com -connect github.com:443 </dev/null 2>/dev/null | sed -n -e '/BEGIN\ CERTIFICATE/,/END\ CERTIFICATE/ p'  > github-com.pem

并使用以下命令(确保您为ca-cert设置了正确的路径)

cat github-com.pem | sudo tee -a /etc/ssl/certs/ca-certificates.crt

然后使用以下语句(确保cert的路径正确):

git config --global http.sslCAinfo /etc/ssl/certs/ca-certificates.crt

然后我能够下载CMAK，但当我尝试。/sbt清洁语句时遇到了问题。它给出了一个pkix路径错误。原因是我的cacert文件中没有存储我的公司颁发证书。

我已经下载了公司证书(谷歌)，并根据本文将下载的证书添加到cacert文件中。使用sudo update-ca-certificates之前一次。/ sbt。这对我很管用。

注意:在执行以上步骤时，您可能需要在root和exit之间切换。

这就是我所做的。

我想在Java 10上开发应用程序，我有Eclipse IDE 2020-06。 证书导入解决方案对我不起作用。 因此，我安装了Java 11 JDK，切换到最新的Eclipse IDE(在Java 11上运行)，并通过在Maven POM下添加以下语句来确保源代码仍然可以根据Java 10编译:

    <maven.compiler.target>1.10</maven.compiler.target>
    <maven.compiler.source>1.10</maven.compiler.source>
    <maven.compiler.release>10</maven.compiler.release>

它就像一个魔法;没有错误。