Sung in Blog

                     一些技術文章 & 一些生活雜碎

          1 - 概述

          腳本catalina.sh用于啟動和關閉tomcat服務器,是最關鍵的腳本
          另外的腳本startup.sh和shutdown.sh都是使用不同的參數調用了該腳本
          該腳本的使用方法如下(引自該腳本本身):

            echo "Usage: catalina.sh ( commands ... )"
            echo "commands:"
            echo "  debug             Start Catalina in a debugger"
            echo "  debug -security   Debug Catalina with a security manager"
            echo "  embedded          Start Catalina in embedded mode"
            echo "  jpda start        Start Catalina under JPDA debugger"
            echo "  run               Start Catalina in the current window"
            echo "  run -security     Start in the current window with security manager"
            echo "  start             Start Catalina in a separate window"
            echo "  start -security   Start in a separate window with security manager"
            echo "  stop              Stop Catalina"
          

          2 - 腳本分析

          #!/bin/sh
          
          
          # =============================================================
          # 該腳本設置正確的環境變量和系統信息,然后啟動或者停止tomcat server
          # 具體的操作是:
          # 使用命令行參數作為args的實參,調用org.apache.catalina.startup.Bootstrap.main(String[])
          # ==============================================================
          
          
          # -----------------------------------------------------------------------------
          # Start/Stop Script for the CATALINA Server
          #
          # Environment Variable Prequisites
          #
          #   CATALINA_HOME   May point at your Catalina "build" directory.
          #
          #   CATALINA_BASE   (Optional) Base directory for resolving dynamic portions
          #                   of a Catalina installation.  If not present, resolves to
          #                   the same directory that CATALINA_HOME points to.
          #
          #   CATALINA_OPTS   (Optional) Java runtime options used when the "start",
          #                   "stop", or "run" command is executed.
          #
          #   CATALINA_TMPDIR (Optional) Directory path location of temporary directory
          #                   the JVM should use (java.io.tmpdir).  Defaults to
          #                   $CATALINA_BASE/temp.
          #
          #   JAVA_HOME       Must point at your Java Development Kit installation.
          #
          #   JAVA_OPTS       (Optional) Java runtime options used when the "start",
          #                   "stop", or "run" command is executed.
          #
          #   JPDA_TRANSPORT  (Optional) JPDA transport used when the "jpda start"
          #                   command is executed. The default is "dt_socket".
          #
          #   JPDA_ADDRESS    (Optional) Java runtime options used when the "jpda start"
          #                   command is executed. The default is 8000.
          #
          #   JSSE_HOME       (Optional) May point at your Java Secure Sockets Extension
          #                   (JSSE) installation, whose JAR files will be added to the
          #                   system class path used to start Tomcat.
          #
          #   CATALINA_PID    (Optional) Path of the file which should contains the pid
          #                   of catalina startup java process, when start (fork) is used
          # -----------------------------------------------------------------------------
          
          
          
          # OS specific support.  $var _must_ be set to either true or false.
          
          cygwin=false
          case "`uname`" in
          CYGWIN*) cygwin=true;;
          esac
          
          
          # PRG是被執行的腳本的名稱,可以認為PRG=="catalina.sh",也可能是某個符號鏈,指向該腳本。
          
          PRG="$0"
          
          
          # 處理了一下PRG,等循環跳出之后PRG成為 ????
          
          while [ -h "$PRG" ]; do
            ls=`ls -ld "$PRG"`
            link=`expr "$ls" : '.*-> \(.*\)$'`
            if expr "$link" : '.*/.*' > /dev/null; then
              PRG="$link"
            else
              PRG=`dirname "$PRG"`/"$link"
            fi
          done
          
          
          
          # PRGDIR是PRG的目錄路徑名稱
          
          PRGDIR=`dirname "$PRG"`
          
          
          # 執行$CATALINA_HOME/BIN/setenv.sh來設置環境變量
          # [ -r filename ] 是判斷是否文件存在且可讀
          
          CATALINA_HOME=`cd "$PRGDIR/.." ; pwd`
          if [ -r "$CATALINA_HOME"/bin/setenv.sh ]; then
            . "$CATALINA_HOME"/bin/setenv.sh
          fi
          
          
          
          # For Cygwin, 確保所有的路徑名都符合UNIX格式
          
          if $cygwin; then
            [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
            [ -n "$CATALINA_HOME" ] && CATALINA_HOME=`cygpath --unix "$CATALINA_HOME"`
            [ -n "$CATALINA_BASE" ] && CATALINA_BASE=`cygpath --unix "$CATALINA_BASE"`
            [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
            [ -n "$JSSE_HOME" ] && JSSE_HOME=`cygpath --path --unix "$JSSE_HOME"`
          fi
          
          
          # 設置用來初始化SystemClassLoader的CLASSPATH變量:通過執行腳本setclasspath.sh完成
          # 注意:腳本setclasspath.sh改變了原來的$CLASSPATH變量,而把它設為:
          # CLASSPATH=$CATALINA_HOME/bin/bootstrap.jar:$JAVA_HOME/lib/tools.jar
          # 其中bootstrap.jar是package org.apache.catalina.startup的打包文件,
          # 含有啟動方法org.apache.catalina.startup.Bootstrap.main(String[] args)
          # tools.jar含有javac編譯器,用來把jsp文件編譯成為servlet class
          
          if [ -r "$CATALINA_HOME"/bin/setclasspath.sh ]; then
            BASEDIR="$CATALINA_HOME"
            . "$CATALINA_HOME"/bin/setclasspath.sh
          else
            echo "Cannot find $CATALINA_HOME/bin/setclasspath.sh"
            echo "This file is needed to run this program"
            exit 1
          fi
          
          
          # 在CLASSPATH環境變量后面補上一些JAR文件
          # [ -n string ] 判斷字符串是否長度非0;[ -z string ] 判斷字符串是否長度為0
          # 它們可以用來判斷是否某個環境變量已經被設置
          
          if [ -n "$JSSE_HOME" ]; then
            CLASSPATH="$CLASSPATH":"$JSSE_HOME"/lib/jcert.jar:"$JSSE_HOME"/lib/jnet.jar:"$JSSE_HOME"/lib/jsse.jar
          fi
          CLASSPATH="$CLASSPATH":"$CATALINA_HOME"/bin/bootstrap.jar
          
          
          
          # 指定CATALINA_BASE變量
          # 如果CATALINA_BASE沒有值,就讓CATALINA_BASE=$CATALINA_HOME
          
          
          if [ -z "$CATALINA_BASE" ] ; then
            CATALINA_BASE="$CATALINA_HOME"
          fi
          
          
          
          # 指定CATALINA_TMPDIR變量
          # 如果CATALINA_TMPDIR沒有值,就讓CATALINA_TMPDIR=$CATALINA_BASE/temp
          
          if [ -z "$CATALINA_TMPDIR" ] ; then
            # Define the java.io.tmpdir to use for Catalina
            CATALINA_TMPDIR="$CATALINA_BASE"/temp
          fi
          
          
          # For Cygwin, 在執行java程序前把路徑名轉換成WINDOWS格式
          
          if $cygwin; then
            JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
            CATALINA_HOME=`cygpath --path --windows "$CATALINA_HOME"`
            CATALINA_BASE=`cygpath --path --windows "$CATALINA_BASE"`
            CATALINA_TMPDIR=`cygpath --path --windows "$CATALINA_TMPDIR"`
            CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
            JSSE_HOME=`cygpath --path --windows "$JSSE_HOME"`
          fi
          
          
          
          # 顯示信息,然后執行命令
          echo "Using CATALINA_BASE:   $CATALINA_BASE"
          echo "Using CATALINA_HOME:   $CATALINA_HOME"
          echo "Using CATALINA_TMPDIR: $CATALINA_TMPDIR"
          echo "Using JAVA_HOME:       $JAVA_HOME"
          
          
          
          # ......當執行catalina.sh的參數是jpda的時候......
          
          if [ "$1" = "jpda" ] ; then
            if [ -z "$JPDA_TRANSPORT" ]; then
              JPDA_TRANSPORT="dt_socket"
            fi
            if [ -z "$JPDA_ADDRESS" ]; then
              JPDA_ADDRESS="8000"
            fi
            if [ -z "$JPDA_OPTS" ]; then
              JPDA_OPTS="-Xdebug -Xrunjdwp:transport=$JPDA_TRANSPORT,address=$JPDA_ADDRESS,server=y,suspend=n"
            fi
            CATALINA_OPTS="$CATALINA_OPTS $JPDA_OPTS"
            shift
          fi
          
          
          
          # ......當執行catalina.sh的參數是debug的時候......
          
          if [ "$1" = "debug" ] ; then
            shift
            if [ "$1" = "-security" ] ; then
              echo "Using Security Manager"
              shift
              exec "$_RUNJDB" $JAVA_OPTS $CATALINA_OPTS \
                -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
                -sourcepath "$CATALINA_HOME"/../../jakarta-tomcat-4.0/catalina/src/share \
                -Djava.security.manager \
                -Djava.security.policy=="$CATALINA_BASE"/conf/catalina.policy \
                -Dcatalina.base="$CATALINA_BASE" \
                -Dcatalina.home="$CATALINA_HOME" \
                -Djava.io.tmpdir="$CATALINA_TMPDIR" \
                org.apache.catalina.startup.Bootstrap "$@" start
            else
              exec "$_RUNJDB" $JAVA_OPTS $CATALINA_OPTS \
                -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
                -sourcepath "$CATALINA_HOME"/../../jakarta-tomcat-4.0/catalina/src/share \
                -Dcatalina.base="$CATALINA_BASE" \
                -Dcatalina.home="$CATALINA_HOME" \
                -Djava.io.tmpdir="$CATALINA_TMPDIR" \
                org.apache.catalina.startup.Bootstrap "$@" start
            fi
          
          
          
          # ......當執行catalina.sh的參數是embedded的時候......
          
          elif [ "$1" = "embedded" ] ; then
            shift
            echo "Embedded Classpath: $CLASSPATH"
            exec "$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
              -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
              -Dcatalina.base="$CATALINA_BASE" \
              -Dcatalina.home="$CATALINA_HOME" \
              -Djava.io.tmpdir="$CATALINA_TMPDIR" \
              org.apache.catalina.startup.Embedded "$@"
          
          
          
          # +----------------------------------------------------+
          # |  ......當執行catalina.sh的參數是run的時候......    |
          # |  在當前窗口中啟動tomcat服務器?。。?               |
          # +----------------------------------------------------+
          
          elif [ "$1" = "run" ]; then
          
            # 把參數run去掉
          
            shift
            
          
            # 如果參數是run -security,則啟動Security Manager
          
            if [ "$1" = "-security" ] ; then
              echo "Using Security Manager"
              shift
              exec "$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
                -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
                -Djava.security.manager \
                -Djava.security.policy=="$CATALINA_BASE"/conf/catalina.policy \
                -Dcatalina.base="$CATALINA_BASE" \
                -Dcatalina.home="$CATALINA_HOME" \
                -Djava.io.tmpdir="$CATALINA_TMPDIR" \
                org.apache.catalina.startup.Bootstrap "$@" start
                
          
            # 如果參數是孤單的run,則在本窗口中啟動tomcat服務器
            # 在本窗口中啟動的方法是使用exec,讓當前進程fork一個新進程來啟動tomcat,當前進程是tomcat的父進程
            # 啟動tomcat的類是org.apache.catalina.startup.Bootstrap.main("start");
          
            else
              exec "$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
                -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
                -Dcatalina.base="$CATALINA_BASE" \
                -Dcatalina.home="$CATALINA_HOME" \
                -Djava.io.tmpdir="$CATALINA_TMPDIR" \
                org.apache.catalina.startup.Bootstrap "$@" start
            fi
          
          
          # +----------------------------------------------------+
          # |  ......當執行catalina.sh的參數是start的時候......  |
          # |  在新窗口中啟動tomcat服務器!??!                  |
          # +----------------------------------------------------+
          
          elif [ "$1" = "start" ] ; then
          
            # 把參數start去掉
          
            shift
            
            # 創建一個文件(如果文件不存在的話)$CATALINA_BASE/logs/catalina.out  
          
            touch "$CATALINA_BASE"/logs/catalina.out
          
            # 如果參數是start -security,則啟動Security Manager
          
            if [ "$1" = "-security" ] ; then
              echo "Using Security Manager"
              shift
              "$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
                -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
                -Djava.security.manager \
                -Djava.security.policy=="$CATALINA_BASE"/conf/catalina.policy \
                -Dcatalina.base="$CATALINA_BASE" \
                -Dcatalina.home="$CATALINA_HOME" \
                -Djava.io.tmpdir="$CATALINA_TMPDIR" \
                org.apache.catalina.startup.Bootstrap "$@" start \
                >> "$CATALINA_BASE"/logs/catalina.out 2>&1 &
          
                if [ ! -z "$CATALINA_PID" ]; then
                  echo $! > $CATALINA_PID
                fi
                
          
            # 如果參數是孤單的start,那么在新窗口中啟動tomcat
          
            else
              "$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
                -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
                -Dcatalina.base="$CATALINA_BASE" \
                -Dcatalina.home="$CATALINA_HOME" \
                -Djava.io.tmpdir="$CATALINA_TMPDIR" \
                org.apache.catalina.startup.Bootstrap "$@" start \
                >> "$CATALINA_BASE"/logs/catalina.out 2>&1 &
          
                if [ ! -z "$CATALINA_PID" ]; then
                  echo $! > $CATALINA_PID
                fi      
            fi
          
          
          # +----------------------------------------------------+
          # |  ......當執行catalina.sh的參數是stop的時候......   |
          # |  關閉tomcat服務器!!!                            |
          # +----------------------------------------------------+
          
          elif [ "$1" = "stop" ] ; then
          
            # 把參數stop去掉
          
            shift
            
          
            # 關閉tomcat服務器的類是org.apache.catalina.startup.Bootstrap->main("stop");
            # 注意:java -D 是設置系統屬性
            
            exec "$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
              -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
              -Dcatalina.base="$CATALINA_BASE" \
              -Dcatalina.home="$CATALINA_HOME" \
              -Djava.io.tmpdir="$CATALINA_TMPDIR" \
              org.apache.catalina.startup.Bootstrap "$@" stop
          
          
          
          # +----------------------------------------------------+
          # |  ......當執行catalina.sh的參數不可辨認的時候...... |
          # |  打印幫助信息,由此查看各種參數代表的意義?。?!    |
          # +----------------------------------------------------+
          
          else
            echo "Usage: catalina.sh ( commands ... )"
            echo "commands:"
            echo "  debug             Start Catalina in a debugger"
            echo "  debug -security   Debug Catalina with a security manager"
            echo "  embedded          Start Catalina in embedded mode"
            echo "  jpda start        Start Catalina under JPDA debugger"
            echo "  run               Start Catalina in the current window"
            echo "  run -security     Start in the current window with security manager"
            echo "  start             Start Catalina in a separate window"
            echo "  start -security   Start in a separate window with security manager"
            echo "  stop              Stop Catalina"
            exit 1
          
          fi
          
          1 - 概述

          腳本catalina.sh用于啟動和關閉tomcat服務器,是最關鍵的腳本
          另外的腳本startup.sh和shutdown.sh都是使用不同的參數調用了該腳本
          該腳本的使用方法如下(引自該腳本本身):

            echo "Usage: catalina.sh ( commands ... )"
            echo "commands:"
            echo "  debug             Start Catalina in a debugger"
            echo "  debug -security   Debug Catalina with a security manager"
            echo "  embedded          Start Catalina in embedded mode"
            echo "  jpda start        Start Catalina under JPDA debugger"
            echo "  run               Start Catalina in the current window"
            echo "  run -security     Start in the current window with security manager"
            echo "  start             Start Catalina in a separate window"
            echo "  start -security   Start in a separate window with security manager"
            echo "  stop              Stop Catalina"
          

          2 - 腳本分析

          #!/bin/sh
          
          
          # =============================================================
          # 該腳本設置正確的環境變量和系統信息,然后啟動或者停止tomcat server
          # 具體的操作是:
          # 使用命令行參數作為args的實參,調用org.apache.catalina.startup.Bootstrap.main(String[])
          # ==============================================================
          
          
          # -----------------------------------------------------------------------------
          # Start/Stop Script for the CATALINA Server
          #
          # Environment Variable Prequisites
          #
          #   CATALINA_HOME   May point at your Catalina "build" directory.
          #
          #   CATALINA_BASE   (Optional) Base directory for resolving dynamic portions
          #                   of a Catalina installation.  If not present, resolves to
          #                   the same directory that CATALINA_HOME points to.
          #
          #   CATALINA_OPTS   (Optional) Java runtime options used when the "start",
          #                   "stop", or "run" command is executed.
          #
          #   CATALINA_TMPDIR (Optional) Directory path location of temporary directory
          #                   the JVM should use (java.io.tmpdir).  Defaults to
          #                   $CATALINA_BASE/temp.
          #
          #   JAVA_HOME       Must point at your Java Development Kit installation.
          #
          #   JAVA_OPTS       (Optional) Java runtime options used when the "start",
          #                   "stop", or "run" command is executed.
          #
          #   JPDA_TRANSPORT  (Optional) JPDA transport used when the "jpda start"
          #                   command is executed. The default is "dt_socket".
          #
          #   JPDA_ADDRESS    (Optional) Java runtime options used when the "jpda start"
          #                   command is executed. The default is 8000.
          #
          #   JSSE_HOME       (Optional) May point at your Java Secure Sockets Extension
          #                   (JSSE) installation, whose JAR files will be added to the
          #                   system class path used to start Tomcat.
          #
          #   CATALINA_PID    (Optional) Path of the file which should contains the pid
          #                   of catalina startup java process, when start (fork) is used
          # -----------------------------------------------------------------------------
          
          
          
          # OS specific support.  $var _must_ be set to either true or false.
          
          cygwin=false
          case "`uname`" in
          CYGWIN*) cygwin=true;;
          esac
          
          
          # PRG是被執行的腳本的名稱,可以認為PRG=="catalina.sh",也可能是某個符號鏈,指向該腳本。
          
          PRG="$0"
          
          
          # 處理了一下PRG,等循環跳出之后PRG成為 ????
          
          while [ -h "$PRG" ]; do
            ls=`ls -ld "$PRG"`
            link=`expr "$ls" : '.*-> \(.*\)$'`
            if expr "$link" : '.*/.*' > /dev/null; then
              PRG="$link"
            else
              PRG=`dirname "$PRG"`/"$link"
            fi
          done
          
          
          
          # PRGDIR是PRG的目錄路徑名稱
          
          PRGDIR=`dirname "$PRG"`
          
          
          # 執行$CATALINA_HOME/BIN/setenv.sh來設置環境變量
          # [ -r filename ] 是判斷是否文件存在且可讀
          
          CATALINA_HOME=`cd "$PRGDIR/.." ; pwd`
          if [ -r "$CATALINA_HOME"/bin/setenv.sh ]; then
            . "$CATALINA_HOME"/bin/setenv.sh
          fi
          
          
          
          # For Cygwin, 確保所有的路徑名都符合UNIX格式
          
          if $cygwin; then
            [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
            [ -n "$CATALINA_HOME" ] && CATALINA_HOME=`cygpath --unix "$CATALINA_HOME"`
            [ -n "$CATALINA_BASE" ] && CATALINA_BASE=`cygpath --unix "$CATALINA_BASE"`
            [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
            [ -n "$JSSE_HOME" ] && JSSE_HOME=`cygpath --path --unix "$JSSE_HOME"`
          fi
          
          
          # 設置用來初始化SystemClassLoader的CLASSPATH變量:通過執行腳本setclasspath.sh完成
          # 注意:腳本setclasspath.sh改變了原來的$CLASSPATH變量,而把它設為:
          # CLASSPATH=$CATALINA_HOME/bin/bootstrap.jar:$JAVA_HOME/lib/tools.jar
          # 其中bootstrap.jar是package org.apache.catalina.startup的打包文件,
          # 含有啟動方法org.apache.catalina.startup.Bootstrap.main(String[] args)
          # tools.jar含有javac編譯器,用來把jsp文件編譯成為servlet class
          
          if [ -r "$CATALINA_HOME"/bin/setclasspath.sh ]; then
            BASEDIR="$CATALINA_HOME"
            . "$CATALINA_HOME"/bin/setclasspath.sh
          else
            echo "Cannot find $CATALINA_HOME/bin/setclasspath.sh"
            echo "This file is needed to run this program"
            exit 1
          fi
          
          
          # 在CLASSPATH環境變量后面補上一些JAR文件
          # [ -n string ] 判斷字符串是否長度非0;[ -z string ] 判斷字符串是否長度為0
          # 它們可以用來判斷是否某個環境變量已經被設置
          
          if [ -n "$JSSE_HOME" ]; then
            CLASSPATH="$CLASSPATH":"$JSSE_HOME"/lib/jcert.jar:"$JSSE_HOME"/lib/jnet.jar:"$JSSE_HOME"/lib/jsse.jar
          fi
          CLASSPATH="$CLASSPATH":"$CATALINA_HOME"/bin/bootstrap.jar
          
          
          
          # 指定CATALINA_BASE變量
          # 如果CATALINA_BASE沒有值,就讓CATALINA_BASE=$CATALINA_HOME
          
          
          if [ -z "$CATALINA_BASE" ] ; then
            CATALINA_BASE="$CATALINA_HOME"
          fi
          
          
          
          # 指定CATALINA_TMPDIR變量
          # 如果CATALINA_TMPDIR沒有值,就讓CATALINA_TMPDIR=$CATALINA_BASE/temp
          
          if [ -z "$CATALINA_TMPDIR" ] ; then
            # Define the java.io.tmpdir to use for Catalina
            CATALINA_TMPDIR="$CATALINA_BASE"/temp
          fi
          
          
          # For Cygwin, 在執行java程序前把路徑名轉換成WINDOWS格式
          
          if $cygwin; then
            JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
            CATALINA_HOME=`cygpath --path --windows "$CATALINA_HOME"`
            CATALINA_BASE=`cygpath --path --windows "$CATALINA_BASE"`
            CATALINA_TMPDIR=`cygpath --path --windows "$CATALINA_TMPDIR"`
            CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
            JSSE_HOME=`cygpath --path --windows "$JSSE_HOME"`
          fi
          
          
          
          # 顯示信息,然后執行命令
          echo "Using CATALINA_BASE:   $CATALINA_BASE"
          echo "Using CATALINA_HOME:   $CATALINA_HOME"
          echo "Using CATALINA_TMPDIR: $CATALINA_TMPDIR"
          echo "Using JAVA_HOME:       $JAVA_HOME"
          
          
          
          # ......當執行catalina.sh的參數是jpda的時候......
          
          if [ "$1" = "jpda" ] ; then
            if [ -z "$JPDA_TRANSPORT" ]; then
              JPDA_TRANSPORT="dt_socket"
            fi
            if [ -z "$JPDA_ADDRESS" ]; then
              JPDA_ADDRESS="8000"
            fi
            if [ -z "$JPDA_OPTS" ]; then
              JPDA_OPTS="-Xdebug -Xrunjdwp:transport=$JPDA_TRANSPORT,address=$JPDA_ADDRESS,server=y,suspend=n"
            fi
            CATALINA_OPTS="$CATALINA_OPTS $JPDA_OPTS"
            shift
          fi
          
          
          
          # ......當執行catalina.sh的參數是debug的時候......
          
          if [ "$1" = "debug" ] ; then
            shift
            if [ "$1" = "-security" ] ; then
              echo "Using Security Manager"
              shift
              exec "$_RUNJDB" $JAVA_OPTS $CATALINA_OPTS \
                -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
                -sourcepath "$CATALINA_HOME"/../../jakarta-tomcat-4.0/catalina/src/share \
                -Djava.security.manager \
                -Djava.security.policy=="$CATALINA_BASE"/conf/catalina.policy \
                -Dcatalina.base="$CATALINA_BASE" \
                -Dcatalina.home="$CATALINA_HOME" \
                -Djava.io.tmpdir="$CATALINA_TMPDIR" \
                org.apache.catalina.startup.Bootstrap "$@" start
            else
              exec "$_RUNJDB" $JAVA_OPTS $CATALINA_OPTS \
                -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
                -sourcepath "$CATALINA_HOME"/../../jakarta-tomcat-4.0/catalina/src/share \
                -Dcatalina.base="$CATALINA_BASE" \
                -Dcatalina.home="$CATALINA_HOME" \
                -Djava.io.tmpdir="$CATALINA_TMPDIR" \
                org.apache.catalina.startup.Bootstrap "$@" start
            fi
          
          
          
          # ......當執行catalina.sh的參數是embedded的時候......
          
          elif [ "$1" = "embedded" ] ; then
            shift
            echo "Embedded Classpath: $CLASSPATH"
            exec "$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
              -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
              -Dcatalina.base="$CATALINA_BASE" \
              -Dcatalina.home="$CATALINA_HOME" \
              -Djava.io.tmpdir="$CATALINA_TMPDIR" \
              org.apache.catalina.startup.Embedded "$@"
          
          
          
          # +----------------------------------------------------+
          # |  ......當執行catalina.sh的參數是run的時候......    |
          # |  在當前窗口中啟動tomcat服務器?。。?               |
          # +----------------------------------------------------+
          
          elif [ "$1" = "run" ]; then
          
            # 把參數run去掉
          
            shift
            
          
            # 如果參數是run -security,則啟動Security Manager
          
            if [ "$1" = "-security" ] ; then
              echo "Using Security Manager"
              shift
              exec "$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
                -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
                -Djava.security.manager \
                -Djava.security.policy=="$CATALINA_BASE"/conf/catalina.policy \
                -Dcatalina.base="$CATALINA_BASE" \
                -Dcatalina.home="$CATALINA_HOME" \
                -Djava.io.tmpdir="$CATALINA_TMPDIR" \
                org.apache.catalina.startup.Bootstrap "$@" start
                
          
            # 如果參數是孤單的run,則在本窗口中啟動tomcat服務器
            # 在本窗口中啟動的方法是使用exec,讓當前進程fork一個新進程來啟動tomcat,當前進程是tomcat的父進程
            # 啟動tomcat的類是org.apache.catalina.startup.Bootstrap.main("start");
          
            else
              exec "$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
                -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
                -Dcatalina.base="$CATALINA_BASE" \
                -Dcatalina.home="$CATALINA_HOME" \
                -Djava.io.tmpdir="$CATALINA_TMPDIR" \
                org.apache.catalina.startup.Bootstrap "$@" start
            fi
          
          
          # +----------------------------------------------------+
          # |  ......當執行catalina.sh的參數是start的時候......  |
          # |  在新窗口中啟動tomcat服務器?。。?                 |
          # +----------------------------------------------------+
          
          elif [ "$1" = "start" ] ; then
          
            # 把參數start去掉
          
            shift
            
            # 創建一個文件(如果文件不存在的話)$CATALINA_BASE/logs/catalina.out  
          
            touch "$CATALINA_BASE"/logs/catalina.out
          
            # 如果參數是start -security,則啟動Security Manager
          
            if [ "$1" = "-security" ] ; then
              echo "Using Security Manager"
              shift
              "$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
                -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
                -Djava.security.manager \
                -Djava.security.policy=="$CATALINA_BASE"/conf/catalina.policy \
                -Dcatalina.base="$CATALINA_BASE" \
                -Dcatalina.home="$CATALINA_HOME" \
                -Djava.io.tmpdir="$CATALINA_TMPDIR" \
                org.apache.catalina.startup.Bootstrap "$@" start \
                >> "$CATALINA_BASE"/logs/catalina.out 2>&1 &
          
                if [ ! -z "$CATALINA_PID" ]; then
                  echo $! > $CATALINA_PID
                fi
                
          
            # 如果參數是孤單的start,那么在新窗口中啟動tomcat
          
            else
              "$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
                -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
                -Dcatalina.base="$CATALINA_BASE" \
                -Dcatalina.home="$CATALINA_HOME" \
                -Djava.io.tmpdir="$CATALINA_TMPDIR" \
                org.apache.catalina.startup.Bootstrap "$@" start \
                >> "$CATALINA_BASE"/logs/catalina.out 2>&1 &
          
                if [ ! -z "$CATALINA_PID" ]; then
                  echo $! > $CATALINA_PID
                fi      
            fi
          
          
          # +----------------------------------------------------+
          # |  ......當執行catalina.sh的參數是stop的時候......   |
          # |  關閉tomcat服務器!??!                            |
          # +----------------------------------------------------+
          
          elif [ "$1" = "stop" ] ; then
          
            # 把參數stop去掉
          
            shift
            
          
            # 關閉tomcat服務器的類是org.apache.catalina.startup.Bootstrap->main("stop");
            # 注意:java -D 是設置系統屬性
            
            exec "$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
              -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
              -Dcatalina.base="$CATALINA_BASE" \
              -Dcatalina.home="$CATALINA_HOME" \
              -Djava.io.tmpdir="$CATALINA_TMPDIR" \
              org.apache.catalina.startup.Bootstrap "$@" stop
          
          
          
          # +----------------------------------------------------+
          # |  ......當執行catalina.sh的參數不可辨認的時候...... |
          # |  打印幫助信息,由此查看各種參數代表的意義?。?!    |
          # +----------------------------------------------------+
          
          else
            echo "Usage: catalina.sh ( commands ... )"
            echo "commands:"
            echo "  debug             Start Catalina in a debugger"
            echo "  debug -security   Debug Catalina with a security manager"
            echo "  embedded          Start Catalina in embedded mode"
            echo "  jpda start        Start Catalina under JPDA debugger"
            echo "  run               Start Catalina in the current window"
            echo "  run -security     Start in the current window with security manager"
            echo "  start             Start Catalina in a separate window"
            echo "  start -security   Start in a separate window with security manager"
            echo "  stop              Stop Catalina"
            exit 1
          
          fi
          
          ]]>
          posted on 2005-09-20 15:09 Sung 閱讀(2568) 評論(0)  編輯  收藏 所屬分類: Tomcat
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