79

尝试向 http 服务器发布请求时出现以下异常：

这是我使用的代码

URL url = new URL(
        "https://www.abc.com");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();

conn.setRequestMethod("GET");

conn.setDoOutput(true);

DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
// wr.writeBytes(params);
wr.flush();
wr.close();

BufferedReader br = new BufferedReader(new InputStreamReader(
        conn.getInputStream()));
String line = null;
while ((line = br.readLine()) != null) {
    System.out.println(line);
}

这是一个例外：

Exception in thread "main" 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 com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:174)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1731)
    at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:241)
    at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:235)
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1206)
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:136)
    at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Handshaker.java:593)
    at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Handshaker.java:529)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:925)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1170)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1197)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1181)
    at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:434)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:166)
    at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1014)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:230)
    at com.amazon.mzang.tools.httpchecker.CategoryYank.getPV(CategoryYank.java:32)
    at com.amazon.mzang.tools.httpchecker.CategoryYank.main(CategoryYank.java:18)
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)
    ... 13 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:174)
    at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:238)
    at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:318)
    ... 19 more

服务器不归我所有。有没有办法忽略这个异常？

4

10 回答 10

55

我已经使用下面的代码来覆盖我的项目中的 SSL 检查，它对我有用。

package com.beingjavaguys.testftp;

import java.io.InputStreamReader;
import java.io.Reader;
import java.net.URL;
import java.net.URLConnection;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.security.cert.X509Certificate;

/**
 * Fix for Exception in thread "main" 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
 */
public class ConnectToHttpsUrl {
    public static void main(String[] args) throws Exception {
        /* Start of Fix */
        TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {
            public java.security.cert.X509Certificate[] getAcceptedIssuers() { return null; }
            public void checkClientTrusted(X509Certificate[] certs, String authType) { }
            public void checkServerTrusted(X509Certificate[] certs, String authType) { }

        } };

        SSLContext sc = SSLContext.getInstance("SSL");
        sc.init(null, trustAllCerts, new java.security.SecureRandom());
        HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());

        // Create all-trusting host name verifier
        HostnameVerifier allHostsValid = new HostnameVerifier() {
            public boolean verify(String hostname, SSLSession session) { return true; }
        };
        // Install the all-trusting host verifier
        HttpsURLConnection.setDefaultHostnameVerifier(allHostsValid);
        /* End of the fix*/

        URL url = new URL("https://nameofthesecuredurl.com");
        URLConnection con = url.openConnection();
        Reader reader = new InputStreamReader(con.getInputStream());
        while (true) {
            int ch = reader.read();
            if (ch == -1) 
                break;
            System.out.print((char) ch);
        }
    }
}
于 2014-07-01T01:14:02.557 回答
55

如果您想一起忽略证书，请在此处查看答案：Ignore self-signed ssl cert using Jersey Client

尽管这会使您的应用程序容易受到中间人攻击。

或者，尝试将证书作为受信任的证书添加到您的 java 商店。这个网站可能会有所帮助。 http://blog.icodejava.com/tag/get-public-key-of-ssl-certificate-in-java/

这是另一个线程，展示了如何将证书添加到您的商店。 Java SSL连接，以编程方式将服务器证书添加到密钥库

关键是：

KeyStore.Entry newEntry = new KeyStore.TrustedCertificateEntry(someCert);
ks.setEntry("someAlias", newEntry, null);
于 2012-11-29T14:09:50.093 回答
20

为您的JSoup命令设置validateTLSCertificates属性。false

Jsoup.connect("https://google.com/").validateTLSCertificates(false).get();
于 2016-04-05T06:46:13.873 回答
6

FWIW，在 Ubuntu 10.04.2 LTS 上安装 ca-certificates-java 和 ca-certificates 包为我解决了这个问题。

于 2016-05-17T21:24:53.833 回答
5

我在执行下面的 spring-boot + RestAssured 简单测试时遇到了同样的错误。

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import static com.jayway.restassured.RestAssured.when;
import static org.apache.http.HttpStatus.SC_OK;

@RunWith(SpringJUnit4ClassRunner.class)
public class GeneratorTest {

@Test
public void generatorEndPoint() {
    when().get("https://bal-bla-bla-bla.com/generators")
            .then().statusCode(SC_OK);
    }
}

在我的情况下，简单的解决方法是添加“useRelaxedHTTPSValidations()”

RestAssured.useRelaxedHTTPSValidation();

然后测试看起来像

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import static com.jayway.restassured.RestAssured.when;
import static org.apache.http.HttpStatus.SC_OK;

@RunWith(SpringJUnit4ClassRunner.class)
public class GeneratorTest {

@Before
public void setUp() {
   RestAssured.useRelaxedHTTPSValidation();
}


@Test
public void generatorEndPoint() {
    when().get("https://bal-bla-bla-bla.com/generators")
            .then().statusCode(SC_OK);
    }
}
于 2017-09-12T11:53:52.450 回答
5

如果问题是缺少中间证书，您可以启用 Oracle JRE 自动下载缺少的中间证书，如本答案中所述。

只需设置 Java 系统属性-Dcom.sun.security.enableAIAcaIssuers=true

为此，服务器的证书必须提供中间证书（证书的颁发者）的 URI。据我所知，这也是浏览器所做的并且应该同样安全——不过我不是安全专家。

编辑：如果我没记错的话，这似乎至少适用于 Java 8 并且在此处记录了 Java 9。

于 2019-09-16T13:35:17.493 回答
2

如果您使用的是 CloudFoundry，那么您必须将 jar 与具有证书的密钥库一起显式推送。

于 2019-03-05T22:37:30.373 回答
1

我也遇到了同样的问题。我试图建立一个有clean install目标的项目。clean package -o我只是在运行配置中将其更改为。然后我重新构建了这个项目，它对我有用。

于 2020-12-18T06:32:32.873 回答
0

我也遇到过这个问题。我在吃JDK 1.8.0_121。我将 JDK 升级到1.8.0_181它，它就像一个魅力。

于 2020-07-06T05:04:12.490 回答
0

我在 Apache Tomcat/7.0.67 和 Java JVM Version: 1.8.0_66-b18 上也有同样的问题。刚升级到 JRE 1.8.0_241 似乎问题就解决了。

于 2021-03-20T18:41:20.633 回答