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

问题是,您的eclipse无法连接实际上它正在尝试连接的站点。 我也遇到过类似的问题,下面给出的解决方案对我来说很有效。

关闭任何第三方互联网安全应用程序,如Zscaler 有时也需要断开VPN如果你是连接的。

谢谢

其他回答

我也遇到了同样的问题,我使用的是8.1.0-3,但后来我使用了9.2.1-0,这个问题在没有任何手动步骤的情况下得到了修复。自签名证书工作正常。

如果您仍然得到这个错误

Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid 
certification path to requested target

执行以下命令并重新启动Java进程后

keytool -import -alias certificatealias -keystore C:\Program Files\Java\jre1.8.0_151\lib\security\cacerts -file certificate.cer

然后JDK有一些问题。尝试从可信的提供者安装JDK。 一旦您从可信的提供商重新安装它,就不会遇到这个问题。

在这里,这种异常通常发生在受信任证书的PATH不匹配时。检查用于安全通信的服务器证书所需的配置或路径。

错误

A problem occurred configuring root project 'uy-android-pagos'.
> Could not resolve all artifacts for configuration ':classpath'.
   > Could not resolve com.goo  gle.firebase:firebase-crashlytics-gradle:2.1.0.
     Required by:
         project :
      > Could not resolve com.goo  gle.firebase:firebase-crashlytics-gradle:2.1.0.
         > Could not get resource 'https://depdes.artifactory.prod.cloud.ihf/artifactory/itau-oq6-frameworks-maven/com/goo%20%20gle/firebase/firebase-crashlytics-gradle/2.1.0/firebase-crashlytics-gradle-2.1.0.pom'.
            > Could not GET 'https://depdes.artifactory.prod.cloud.ihf/artifactory/itau-oq6-frameworks-maven/com/goo%20%20gle/firebase/firebase-crashlytics-gradle/2.1.0/firebase-crashlytics-gradle-2.1.0.pom'.
               > PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

解决方案

请记住,有许多可能的原因产生这个错误,在我的情况下,我用以下方式修复了它:

用Gradle文件同步项目 检查错误无法解决com。咕gle.firebase: firebase-crashlytics-gradle:魅惑。 结构变化。Gradle (:project) from comGoo gle.firebase:firebase-crashlytic -gradle:2.1.0 to com.google.firebase:firebase-crashlytic -gradle:2.1.0(注意空格)

依赖类路径中的任何错误都会生成这种类型的异常。检查生成问题的提交的gradle。

GL

它是对答案https://stackoverflow.com/a/36427118/1491414的补充。由于@MagGGG

请确保您有管理员权限 请使用双引号作为密钥存储库路径(-keystore C:\Program Files (x86)\Java\ jre1.6.0_22\lib\security\cacerts"),因为在Windows操作系统中,默认的安装位置将是程序文件,由于程序文件之间的空格,您将得到一个错误。