如何忽略PKIX路径构建失败：sun.security.provider.certpath.SunCertPathBuilderException？

74

尝试将请求发布到http服务器时，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

该服务器不属于我。有没有办法忽略此异常？

java  ssl  certificate  ssl-certificate 
— 深夜2
source
5
不要忽略此异常。将证书（经过一些手动验证）导入信任库中。忽略证书错误会使连接容易受到潜在的MITM攻击。
— 布鲁诺
12
有时候信任对客户端并不重要，但是服务器仍然使用https。
— 2014年
我只有在同一台服务器上有时才收到此错误。一秒钟后再试一次，请求通过。服务器为botcompany.de，并具有LetsEncrypt证书。如何解释呢？Comodo证书从未出现过此问题。不知道证书是否是原因。服务器正在运行NanoHTTPD。
— Stefan Reich

Answers:

54

如果您想一起忽略证书，请在此处查看答案：使用Jersey客户端忽略自签名的ssl证书

尽管这会使您的应用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Java存储中。该站点可能会有所帮助。 http://blog.icodejava.com/tag/get-public-key-of-ssl-certificate-in-java/

这是另一个线程，显示如何向您的商店添加证书。 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);
— 千米1
source
这个解决方案对我
— 有用
这是someCert什么 我应该如何创建它？
— 伊莱·哈里奇
45

我已使用以下代码覆盖了项目中的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);
        }
    }
}
— Kishore库马尔
source
不遵守合同。
— user207421 '16
在您致电时sc.init()，第三个参数可能是null。（将提供默认值。）
— kevinarpe
1
谢谢，此修复程序将忽略所有无效证书。当证书每3个月自动更新一次（例如让我们加密证书），并且您不能真正每3个月在Java信任库中手动安装证书时，这
— 很有用
这仅适用于HTTP，对吧？但不是SMTP。我使用SMTP测试了此操作，却没有做任何事情（仍然出现相同的证书错误……直到最终将证书添加到密钥库中）。
— KajMagnus
3

我在执行下面的spring-boot + RestAssured简单测试时遇到了相同的错误。 

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，最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);
    }
}
— 普拉文
source
2

如果问题是缺少中间证书，则可以按照此答案中的说明使Oracle JRE自动下载缺少的中间证书。

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，这也是浏览器的功能，并且应该同样安全-尽管我不是安全专家。

编辑：如果我没记错的话，这似乎至少与Java 8兼容，并在此处针对Java 9进行了说明。

— 本·隆伯格
source
您应该提及您的解决方案适用于哪个Java版本。试过了，它不能与JDK 1.7.0_13一起使用
— Rafael Palomino
1

如果您使用的是CloudFoundry，则必须显式地将jar和具有证书的密钥库一起推送。

— 智能编码器
source
0

我也面临这个问题。我有JDK 1.8.0_121。我将JDK升级到1.8.0_181，并且像魅力一样工作。

— 欧桑达·德山
source
0

我也遇到过同样的问题。我试图以一个clean install目标来构建项目。我只是将其更改clean package -o为运行配置。然后，我重新构建了该项目，它为我工作。

— 切坦·帕蒂尔（Chetan Patil）
source
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