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虽然我可以在 localhost:8080 上看到 Tomcat 的启动页面，但我无法让 JSSE 连接器正常工作。我在 Ubuntu 16.04 上的 JDK 9.0.1 上使用 Tomcat 9.0.2。

我的连接器是：

<Connector port="8443"
           protocol="org.apache.coyote.http11.Http11NioProtocol"
           sslImplementationName="org.apache.tomcat.util.net.jsse.JSSEImplementation"
           maxThreads="150"
           SSLEnabled="true"
           scheme="https"
           secure="true" >
    <SSLHostConfig>
        <Certificate certificateKeystoreFile="../.keystore"
                     certificateKeystorePassword="changeit"
                     certificateKeyAlias="tomcat"
                     type="RSA" />
    </SSLHostConfig>
</Connector>

但是，当我在浏览器上访问 localhost:8443 时，我看到以下内容：

在 Firefox 上：“连接已重置。与服务器的连接在页面加载时已重置。”

在 Chromium 上：“此页面无法正常工作。本地主机没有发送任何数据。ERR_EMPTY_RESPONSE”

我看到密钥库文件正在被正确读取。当我做：

openssl s_client -debug -connect localhost:8443

输出如下：

CONNECTED(00000003)
write to 0xb9f0b0 [0xb9fdb0] (305 bytes => 305 (0x131))
...
depth=0 C = EC, ST = mystate, L = mycity, O = myorg, OU = myou, CN = my name
verify error:num=18:self signed certificate
verify return:1
depth=0 C = EC, ST = mystate, L = mycity, O = myorg, OU = myou, CN = my name
verify return:1
...
Certificate chain
 0 s:/C=EC/ST=mystate/L=mycity/O=myorg/OU=myou/CN=my name
   i:/C=EC/ST=mystate/L=mycity/O=myorg/OU=myou/CN=my name
---
Server certificate
-----BEGIN CERTIFICATE-----
...
-----END CERTIFICATE-----
subject=/C=EC/ST=mystate/L=mycity/O=myorg/OU=myou/CN=my name
issuer=/C=EC/ST=mystate/L=mycity/O=myorg/OU=myou/CN=my name
---
No client certificate CA names sent
Peer signing digest: SHA512
Server Temp Key: ECDH, P-256, 256 bits
---
SSL handshake has read 1353 bytes and written 431 bytes
---
New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-GCM-SHA384
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
    Protocol  : TLSv1.2
    Cipher    : ECDHE-RSA-AES256-GCM-SHA384
    Session-ID: 65D77EF99F8E4E7D145ABC005CCBFAA283533280995D7203A0220A6C1D11B9D4
    Session-ID-ctx: 
    Master-Key: 5B2734E8A9EC21DE0090F2AC288A3D6E872FB292455B6F9FF84963D77F745D2E2E627D2A4358AE4A65F89B8EA123571A
    Key-Arg   : None
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    Start Time: 1515167322
    Timeout   : 300 (sec)
    Verify return code: 18 (self signed certificate)

在catalina.out日志文件中，我发现每当我尝试通过浏览器 localhost:8443 访问时，都会发生 NPE：

05-Jan-2018 08:48:06.848 SEVERE [https-jsse-nio-8443-exec-1] org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun
 java.lang.NullPointerException
        at org.apache.tomcat.util.net.AbstractJsseEndpoint.createSSLEngine(AbstractJsseEndpoint.java:180)
        at org.apache.tomcat.util.net.SecureNioChannel.processSNI(SecureNioChannel.java:325)
        at org.apache.tomcat.util.net.SecureNioChannel.handshake(SecureNioChannel.java:175)
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1353)
        at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        at java.base/java.lang.Thread.run(Thread.java:844)

此异常重复 10 次，其中重复之间的唯一区别是第一行中的子字符串“exec-<NUMBER>”，其中 NUMBER 的范围从 1 到 10（在上面的示例中，它是 1）。

为什么 doRun 方法会抛出 NPE 对我来说是个谜。我尝试了许多配置组合，但无济于事。怎么了？

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1 回答 1

2

此问题已由https://bz.apache.org/bugzilla/show_bug.cgi?id=61914解决，并将在Tomcat 9.0.3+中得到解决。

在第 180 行添加了一个空检查o.a.t.util.net.AbstractJsseEndpoint.createSSLEngine()，以纠正使用 Java 9 时潜在的 NPE。

于 2018-01-05T20:51:22.233 回答