Use InstallCert

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我是靠谱客的博主老实毛巾，最近开发中收集的这篇文章主要介绍Use InstallCert，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

编译InstallCert.java，然后执行：java InstallCert hostname，比如：
java InstallCert www.twitter.com
会看到如下信息：
java InstallCert www.twitter.com
Loading KeyStore /usr/java/jdk1.6.0_16/jre/lib/security/cacerts...
Opening connection to www.twitter.com:443...
Starting SSL handshake...

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:150)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1476)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:174)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:168)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:846)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:106)
at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Handshaker.java:495)
at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Handshaker.java:433)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:815)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1025)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1038)
at InstallCert.main(InstallCert.java:63)
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:221)
at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:145)
at sun.security.validator.Validator.validate(Validator.java:203)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:172)
at InstallCert$SavingTrustManager.checkServerTrusted(InstallCert.java:158)
at com.sun.net.ssl.internal.ssl.JsseX509TrustManager.checkServerTrusted(SSLContextImpl.java:320)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:839)
... 7 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:236)
at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:194)
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:216)
... 13 more

Server sent 2 certificate(s):

1 Subject CN=www.twitter.com, O=example.com, C=US
Issuer CN=Certificate Shack, O=example.com, C=US
sha1 2e 7f 76 9b 52 91 09 2e 5d 8f 6b 61 39 2d 5e 06 e4 d8 e9 c7
md5 dd d1 a8 03 d7 6c 4b 11 a7 3d 74 28 89 d0 67 54

2 Subject CN=Certificate Shack, O=example.com, C=US
Issuer CN=Certificate Shack, O=example.com, C=US
sha1 fb 58 a7 03 c4 4e 3b 0e e3 2c 40 2f 87 64 13 4d df e1 a1 a6
md5 72 a0 95 43 7e 41 88 18 ae 2f 6d 98 01 2c 89 68

Enter certificate to add to trusted keystore or 'q' to quit: [1]

输入1，回车，然后会在当前的目录下产生一个名为“ssecacerts”的证书。
将证书拷贝到$JAVA_HOME/jre/lib/security目录下，或者通过以下方式：
System.setProperty("javax.net.ssl.trustStore", "你的jssecacerts证书路径");

注意：因为是静态加载，所以要重新启动你的Web Server，证书才能生效。