Tomcat8 正在运行但没有加载页面

Question

我在 Digital Ocean 上创建了一个新主机来托管我的应用程序。我已经安装了 Tomcat8 和 Apache，但是当我尝试为 8080 端口卷曲时，Tomcat8 没有响应。它只是加载和加载，但没有任何反应。

主机在 Ubuntu 16.04LTS 操作系统上运行。

这是 Catalina 日志文件

        Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: Java Home:             /usr/lib/jvm/java-8-openjdk-amd64/jre
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: JVM Version:           1.8.0_151-8u151-b12-0ubuntu0.16.04.2-b12
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: JVM Vendor:            Oracle Corporation
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: CATALINA_BASE:         /var/lib/tomcat8
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: CATALINA_HOME:         /usr/share/tomcat8
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: Command line argument: -Djava.util.logging.config.file=/var/lib/tomcat8/conf/logging.properties
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: Command line argument: -Djava.awt.headless=true
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: Command line argument: -Xmx128m
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: Command line argument: -XX:+UseConcMarkSweepGC
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: Command line argument: -Djava.net.preferIPv4Stack=true
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: Command line argument: -Djava.net.preferIPv4Addresses=true
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: Command line argument: -Djava.endorsed.dirs=/usr/share/tomcat8/endorsed
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: Command line argument: -Dcatalina.base=/var/lib/tomcat8
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: Command line argument: -Dcatalina.home=/usr/share/tomcat8
    Apr 01, 2018 4:22:14 PM org.apache.catalina.startup.VersionLoggerListener log
    INFO: Command line argument: -Djava.io.tmpdir=/tmp/tomcat8-tomcat8-tmp
    Apr 01, 2018 4:22:15 PM org.apache.coyote.AbstractProtocol init
    INFO: Initializing ProtocolHandler ["http-nio-8080"]
    Apr 01, 2018 4:22:15 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector
    INFO: Using a shared selector for servlet write/read
    Apr 01, 2018 4:22:15 PM org.apache.catalina.startup.Catalina load
    INFO: Initialization processed in 1265 ms
    Apr 01, 2018 4:22:15 PM org.apache.catalina.core.StandardService startInternal
    INFO: Starting service Catalina
    Apr 01, 2018 4:22:15 PM org.apache.catalina.core.StandardEngine startInternal
    INFO: Starting Servlet Engine: Apache Tomcat/8.0.32 (Ubuntu)
    Apr 01, 2018 4:22:15 PM org.apache.catalina.startup.HostConfig deployDescriptor
    INFO: Deploying configuration descriptor /etc/tomcat8/Catalina/localhost/docs.xml
    Apr 01, 2018 4:22:16 PM org.apache.jasper.servlet.TldScanner scanJars
    INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.

Netstat 输出

java    3049  tomcat8   52u  IPv4  22541      0t0  TCP *:8080 (LISTEN)

Answer 1

经过几个小时的调试，我重新启动了容器，重新安装了 Java JDK 8，这似乎解决了问题。