我试图使用twitter4j库为我的java项目获得推文,它在封面下使用java.net.HttpURLConnection(可以在堆栈跟踪中看到)。在我第一次运行时,我得到了一个关于证书sun.security.validator.ValidatorException和sun.security.provider.certpath.SunCertPathBuilderException的错误。然后我添加了twitter证书:

C:\Program Files\Java\jdk1.7.0_45\jre\lib\security>keytool -importcert -trustcacerts -file PathToCert -alias ca_alias -keystore "C:\Program Files\Java\jdk1.7.0_45\jre\lib\security\cacerts"

但是没有成功。以下是获取推文的流程:

public static void main(String[] args) throws TwitterException {
    ConfigurationBuilder cb = new ConfigurationBuilder();
    cb.setDebugEnabled(true)
        .setOAuthConsumerKey("myConsumerKey")
        .setOAuthConsumerSecret("myConsumerSecret")
        .setOAuthAccessToken("myAccessToken")
        .setOAuthAccessTokenSecret("myAccessTokenSecret");
    
    TwitterFactory tf = new TwitterFactory(cb.build());
    Twitter twitter = tf.getInstance();
    
    try {
        Query query = new Query("iphone");
        QueryResult result;
        result = twitter.search(query);
        System.out.println("Total amount of tweets: " + result.getTweets().size());
        List<Status> tweets = result.getTweets();
        
        for (Status tweet : tweets) {
            System.out.println("@" + tweet.getUser().getScreenName() + " : " + tweet.getText());
        }
    } catch (TwitterException te) {
        te.printStackTrace();
        System.out.println("Failed to search tweets: " + te.getMessage());
    }

这里是错误:

sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
Relevant discussions can be found on the Internet at:
    http://www.google.co.jp/search?q=d35baff5 or
    http://www.google.co.jp/search?q=1446302e
TwitterException{exceptionCode=[d35baff5-1446302e 43208640-747fd158 43208640-747fd158 43208640-747fd158], statusCode=-1, message=null, code=-1, retryAfter=-1, rateLimitStatus=null, version=3.0.5}
    at twitter4j.internal.http.HttpClientImpl.request(HttpClientImpl.java:177)
    at twitter4j.internal.http.HttpClientWrapper.request(HttpClientWrapper.java:61)
    at twitter4j.internal.http.HttpClientWrapper.get(HttpClientWrapper.java:81)
    at twitter4j.TwitterImpl.get(TwitterImpl.java:1929)
    at twitter4j.TwitterImpl.search(TwitterImpl.java:306)
    at jku.cc.servlets.TweetsAnalyzer.main(TweetsAnalyzer.java:38)
Caused by: 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(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
    at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
    at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
    at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
    at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
    at sun.security.ssl.Handshaker.processLoop(Unknown Source)
    at sun.security.ssl.Handshaker.process_record(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
    at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    at java.net.HttpURLConnection.getResponseCode(Unknown Source)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
    at twitter4j.internal.http.HttpResponseImpl.<init>(HttpResponseImpl.java:34)
    at twitter4j.internal.http.HttpClientImpl.request(HttpClientImpl.java:141)
    ... 5 more
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(Unknown Source)
    at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
    at sun.security.validator.Validator.validate(Unknown Source)
    at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
    at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
    at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
    ... 20 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
    at java.security.cert.CertPathBuilder.build(Unknown Source)
    ... 26 more
Failed to search tweets: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

当前回答

Mac

接受的答案不适用于Mac,因为Mac (Chrome或Firefox)中没有导出按钮。请检查此答案以下载证书,并按照以下步骤执行:

列出keystore中安装的所有证书:

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

注:

密钥库的默认密码为:changeit。 对于Java-8或以下版本,请使用cd $JAVA_HOME/jre/lib/security命令

在将证书导入密钥存储库之前,请备份密钥存储库:

sudo cp cacerts cacerts.bak

将下载的证书导入keystore:

sudo keytool -importcert -alias youralias -file /path/to/the/downloaded/certificate -keystore cacerts

检查证书是否存储在密钥存储库中:

sudo keytool -list -keystore cacerts -alias youralias

如果你想看到更详细的信息,添加-v标志:

sudo keytool -v -list -keystore cacerts -alias youralias

其他回答

我在ubuntu 15.10上也有同样的问题。请尝试在本地下载插件,例如https://github.com/lmenezes/elasticsearch-kopf/archive/master.zip,并使用以下命令安装:

sudo /usr/share/elasticsearch/bin/plugin install file:/home/dev/Downloads/elasticsearch-kopf-master.zip

路径可能不同,取决于你的环境。

的问候。

下载证书文件,并按照下面的命令使用证书文件更新密钥存储库。

sudo keytool -importcert -别名“aws2”-文件~/桌面/*aws。crt -keystore /Library/java/JavaVirtualMachines/jdk1.8.0_131.jdk/ Home/ jdk/ lib/security/cacerts

我的情况略有不同,当时我的系统上同时存在JDK和JRE 1.8.0_112。

我导入新的CA证书到[JDK_FOLDER]\jre\lib\security\cacerts使用已知的命令:

keytool -import -trustcacerts -keystore cacerts -alias <new_ca_alias> -file <path_to_ca_cert_file>

尽管如此,我仍然得到相同的PKIX路径构建失败错误。

我在java命令行中添加了调试信息,使用java -Djavax.net.debug=all…> debug.log。在debug.log文件中,以trustStore开头的行实际上指向[JRE_FOLDER]\lib\security\cacerts中找到的cacerts存储。

在我的案例中,解决方案是将JDK使用的cacerts文件(添加了新的ca)复制到JRE使用的cacerts文件上,这样就解决了问题。

我使用我自己的信任存储,而不是JRE,通过传递arg -Djavax.net.ssl.trustStore=

不管信任库中的certs如何,我都得到这个错误。对我来说,问题是在参数行上传递的属性的顺序。 当我把-Djavax.net.ssl.trustStore=& -Djavax.net.ssl.trustStorePassword=之前-Dspring.config。Location = & -jar args我能够通过https成功调用我的rest调用。

解决这个异常的简单步骤,(我在java 11上做的),

First you need to Download the public SSL certificate file of the target domain that you are trying to call,for that Open the target domain website in the chrome (Example: https://amazonservice.domain.com) Click on the small lock icon before the URL in the browser Click View certificates Now Click on Certificate is valid as shown below Now a new Popup will open as shown below, Open the details tab Select the RootCert at the top Click Export and save the .cer file to your system in a directory

现在您有了目标域的公共密钥存储库,您正在尝试在java应用程序中调用该密钥存储库,现在我们需要将该密钥存储库导入您的jre,为此转到$JAVA_HOME/bin目录并运行以下命令

./keytool -importcert -alias someAliasName -keystore {JAVA_HOME}/lib/security/cacerts -file {PathToDownloads}/certificateFileName.cer

它会要求您输入密码,如果您知道,请输入密码,证书的默认密码是changeit

参考文献

https://confluence.atlassian.com/kb/how-to-import-a-public-ssl-certificate-into-a-jvm-867025849.html https://confluence.atlassian.com/kb/unable-to-connect-to-ssl-services-due-to-pkix-path-building-failed-error-779355358.html