###前提・実現したいこと
アプリケーションの開発初心者です。
これから勉強しようとしています。
こちらでの質問も初めてですが、
皆様のお力をどうかお貸しください。
###発生している問題・エラーメッセージ
久しぶりにEclipsを起動し、Tomcatを起動すると下記のような
エラーメッセージが出ました。
半年前にEclipsを設定した時は正常に動きました。
自分でエラーメッセージを元にネットで似たような事象で解決を図りましたが解決できませんでした。
原因と解決方法を教えてください。
エラーメッセージ 重大: A child container failed during start [土 5 13 16:12:18 GMT+09:00 2017] 重大: A child container failed during start [土 5 13 16:12:18 GMT+09:00 2017] 重大: The required Server component failed to start so Tomcat is unable to start. [土 5 13 16:12:18 GMT+09:00 2017]
###該当のソースコード
情報: Server version: Apache Tomcat/7.0.68 [土 5 13 16:12:13 GMT+09:00 2017] 情報: Server built: Feb 8 2016 20:25:54 UTC [土 5 13 16:12:13 GMT+09:00 2017] 情報: Server number: 7.0.68.0 [土 5 13 16:12:13 GMT+09:00 2017] 情報: OS Name: Windows 8.1 [土 5 13 16:12:13 GMT+09:00 2017] 情報: OS Version: 6.3 [土 5 13 16:12:13 GMT+09:00 2017] 情報: Architecture: amd64 [土 5 13 16:12:13 GMT+09:00 2017] 情報: Java Home: C:\Eclipse\pleiades\java\7\jre [土 5 13 16:12:13 GMT+09:00 2017] 情報: JVM Version: 1.7.0_80-b15 [土 5 13 16:12:13 GMT+09:00 2017] 情報: JVM Vendor: Oracle Corporation [土 5 13 16:12:13 GMT+09:00 2017] 情報: CATALINA_BASE: C:\Eclipse\pleiades\tomcat\7 [土 5 13 16:12:13 GMT+09:00 2017] 情報: CATALINA_HOME: C:\Eclipse\pleiades\tomcat\7 [土 5 13 16:12:13 GMT+09:00 2017] 情報: Command line argument: -agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:50824 [土 5 13 16:12:13 GMT+09:00 2017] 情報: Command line argument: -Dcatalina.home=C:\Eclipse\pleiades\tomcat\7 [土 5 13 16:12:13 GMT+09:00 2017] 情報: Command line argument: -Djava.endorsed.dirs=C:\Eclipse\pleiades\tomcat\7\endorsed [土 5 13 16:12:13 GMT+09:00 2017] 情報: Command line argument: -Dcatalina.base=C:\Eclipse\pleiades\tomcat\7 [土 5 13 16:12:13 GMT+09:00 2017] 情報: Command line argument: -Djava.io.tmpdir=C:\Eclipse\pleiades\tomcat\7\temp [土 5 13 16:12:13 GMT+09:00 2017] 情報: Command line argument: -Dfile.encoding=UTF-8 [土 5 13 16:12:13 GMT+09:00 2017] 情報: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Eclipse\pleiades\java\7\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Eclipse\pleiades\java\7\jre\bin;C:/Eclipse/pleiades/eclipse/jre/bin/../jre/bin/server;C:/Eclipse/pleiades/eclipse/jre/bin/../jre/bin;C:/Eclipse/pleiades/eclipse/jre/bin/../jre/lib/amd64;C:\Pleiades\java\7\bin;C:\Program Files\Java\jdk1.7.0_79\bin;C:\oraclexe\app\oracle\product\11.2.0\server\bin;C:\Program Files\Java\jdk1.7.0_79\bin;C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Hewlett-Packard\SimplePass\;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files\Microsoft SQL Server\110\Tools\Binn\;C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.0\;C:\Program Files\Microsoft SQL Server\120\Tools\Binn\;C:\Program Files (x86)\Skype\Phone\;C:\Eclipse\pleiades\eclipse;;. [土 5 13 16:12:13 GMT+09:00 2017] 情報: Initializing ProtocolHandler ["http-bio-8000"] [土 5 13 16:12:13 GMT+09:00 2017] 情報: Initializing ProtocolHandler ["ajp-bio-8009"] [土 5 13 16:12:13 GMT+09:00 2017] 情報: Initialization processed in 2093 ms [土 5 13 16:12:13 GMT+09:00 2017] 情報: サービス Catalina を起動します [土 5 13 16:12:14 GMT+09:00 2017] 情報: Starting Servlet Engine: Apache Tomcat/7.0.68 [土 5 13 16:12:14 GMT+09:00 2017] 情報: 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. [土 5 13 16:12:16 GMT+09:00 2017] 情報: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [252] milliseconds. [土 5 13 16:12:16 GMT+09:00 2017] 情報: 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. [土 5 13 16:12:17 GMT+09:00 2017] 情報: 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. [土 5 13 16:12:18 GMT+09:00 2017] 重大: A child container failed during start [土 5 13 16:12:18 GMT+09:00 2017] 重大: A child container failed during start [土 5 13 16:12:18 GMT+09:00 2017] 重大: The required Server component failed to start so Tomcat is unable to start. [土 5 13 16:12:18 GMT+09:00 2017] 情報: Pausing ProtocolHandler ["http-bio-8000"] [土 5 13 16:12:18 GMT+09:00 2017] 情報: Pausing ProtocolHandler ["ajp-bio-8009"] [土 5 13 16:12:18 GMT+09:00 2017] 情報: サービス Catalina を停止します [土 5 13 16:12:18 GMT+09:00 2017] 情報: Destroying ProtocolHandler ["http-bio-8000"] [土 5 13 16:12:18 GMT+09:00 2017] 情報: Destroying ProtocolHandler ["ajp-bio-8009"] [土 5 13 16:12:18 GMT+09:00 2017]
###試したこと
ポート番号の競合が発生していないか
→発生していない
###補足情報(言語/FW/ツール等のバージョンなど)
OS:Windows8
Java:1.7.0_79
tomcat:tomcat7

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