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Mac 安装Java反编译工具JD-GUI

一、下载JD-GUI软件

1.首先到Github下载JD-GUI软件:
github java-decompiler/jd-gui Public

选择jd-gui-osx-1.6.6.tar.

2.解压打开软件,但是提示错误:

在这里插入图片描述

3.确保本机已安装JDK.

4.如果确定已经安装了JDK海报这个这个错误,选中JD-GUI,右键显示包内容,找到这个文件:
在这里插入图片描述
5.文本编辑器编辑这个

universalJavaApplicationStub.sh

6.使用以下内容替换:

#!/bin/bash###################################################################################                                                                                ## universalJavaApplicationStub                                                   ##                                                                                ## A BASH based JavaApplicationStub for Java Apps on Mac OS X                     ## that works with both Apple's and Oracle's plist format.                        ##                                                                                ## Inspired by Ian Roberts stackoverflow answer                                   ## at http://stackoverflow.com/a/17546508/1128689                                 ##                                                                                ## @author    Tobias Fischer                                                      ## @url       https://github.com/tofi86/universalJavaApplicationStub              ## @date      2020-03-19                                                          ## @version   3.0.6                                                               ##                                                                                ####################################################################################                                                                                ## The MIT License (MIT)                                                          ##                                                                                ## Copyright (c) 2014-2020 Tobias Fischer                                         ##                                                                                ## Permission is hereby granted, free of charge, to any person obtaining a copy   ## of this software and associated documentation files (the "Software"), to deal  ## in the Software without restriction, including without limitation the rights   ## to use, copy, modify, merge, publish, distribute, sublicense, and/or sell      ## copies of the Software, and to permit persons to whom the Software is          ## furnished to do so, subject to the following conditions:                       ##                                                                                ## The above copyright notice and this permission notice shall be included in all ## copies or substantial portions of the Software.                                ##                                                                                ## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR     ## IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,       ## FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE    ## AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER         ## LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,  ## OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE  ## SOFTWARE.                                                                      ##                                                                                #################################################################################### function 'stub_logger()'## A logger which logs to the macOS Console.app using the 'syslog' command## @param1  the log message# @return  void################################################################################functionstub_logger(){
    syslog -s -k \
        Facility com.apple.console \
        Level Notice \
        Sender "$(basename"$0")"\
        Message "[$$][${CFBundleName:-$(basename "$0")}] $1"}# set the directory abspath of the current# shell script with symlinks being resolved############################################PRG=$0while[ -h "$PRG"];dols=$(ls -ld "$PRG")link=$(expr"$ls":'^.*-> \(.*\)$'2>/dev/null)ifexpr"$link":'^/'2> /dev/null >/dev/null;thenPRG="$link"elsePRG="$(dirname"$PRG")/$link"fidonePROGDIR=$(dirname"$PRG")
stub_logger "[StubDir] $PROGDIR"# set files and folders############################################# the absolute path of the app packagecd"$PROGDIR"/../../ ||exit11AppPackageFolder=$(pwd)# the base path of the app packagecd..||exit12AppPackageRoot=$(pwd)# set Apple's Java folderAppleJavaFolder="${AppPackageFolder}"/Contents/Resources/Java
 
# set Apple's Resources folderAppleResourcesFolder="${AppPackageFolder}"/Contents/Resources
 
# set Oracle's Java folderOracleJavaFolder="${AppPackageFolder}"/Contents/Java
 
# set Oracle's Resources folderOracleResourcesFolder="${AppPackageFolder}"/Contents/Resources
 
# set path to Info.plist in bundleInfoPlistFile="${AppPackageFolder}"/Contents/Info.plist
 
# set the default JVM Version to a null stringJVMVersion=""JVMMaxVersion=""# function 'plist_get()'## read a specific Plist key with 'PlistBuddy' utility## @param1  the Plist key with leading colon ':'# @return  the value as String or Array################################################################################plist_get(){
    /usr/libexec/PlistBuddy -c "print $1""${InfoPlistFile}"2> /dev/null
}# function 'plist_get_java()'## read a specific Plist key with 'PlistBuddy' utility# in the 'Java' or 'JavaX' dictionary (<dict>)## @param1  the Plist :Java(X):Key with leading colon ':'# @return  the value as String or Array################################################################################plist_get_java(){
    plist_get ${JavaKey:-":Java"}$1}# read Info.plist and extract JVM options############################################# read the program name from CFBundleNameCFBundleName=$(plist_get ':CFBundleName')# read the icon file nameCFBundleIconFile=$(plist_get ':CFBundleIconFile')# check Info.plist for Apple style Java keys -> if key :Java is present, parse in apple mode
/usr/libexec/PlistBuddy -c "print :Java""${InfoPlistFile}"> /dev/null 2>&1exitcode=$?JavaKey=":Java"# if no :Java key is present, check Info.plist for universalJavaApplication style JavaX keys -> if key :JavaX is present, parse in apple modeif[$exitcode -ne 0];then
    /usr/libexec/PlistBuddy -c "print :JavaX""${InfoPlistFile}"> /dev/null 2>&1exitcode=$?JavaKey=":JavaX"fi# read 'Info.plist' file in Apple style if exit code returns 0 (true, ':Java' key is present)if[$exitcode -eq 0];then
    stub_logger "[PlistStyle] Apple"# set Java and Resources folderJavaFolder="${AppleJavaFolder}"ResourcesFolder="${AppleResourcesFolder}"APP_PACKAGE="${AppPackageFolder}"JAVAROOT="${AppleJavaFolder}"USER_HOME="$HOME"# read the Java WorkingDirectoryJVMWorkDir=$(plist_get_java ':WorkingDirectory'|xargs)# set Working Directory based upon PList valueif[[! -z ${JVMWorkDir}]];thenWorkingDirectory="${JVMWorkDir}"else# AppPackageRoot is the standard WorkingDirectory when the script is startedWorkingDirectory="${AppPackageRoot}"fi# expand variables $APP_PACKAGE, $JAVAROOT, $USER_HOMEWorkingDirectory=$(evalecho"${WorkingDirectory}")# read the MainClass nameJVMMainClass="$(plist_get_java ':MainClass')"# read the SplashFile nameJVMSplashFile=$(plist_get_java ':SplashFile')# read the JVM Properties as an array and retain spacesIFS=$'\t\n'JVMOptions=($(xargs -n1 <<<$(plist_get_java ':Properties'|grep" ="|sed's/^ */-D/g'|sed -E 's/ = (.*)$/="\1"/g')))unsetIFS# post processing of the array follows further below...# read the ClassPath in either Array or String styleJVMClassPath_RAW=$(plist_get_java ':ClassPath'|xargs)if[[$JVMClassPath_RAW== *Array* ]];thenJVMClassPath=.$(plist_get_java ':ClassPath'|grep"    "|sed's/^ */:/g'|tr -d '\n'|xargs)elseJVMClassPath=${JVMClassPath_RAW}fi# expand variables $APP_PACKAGE, $JAVAROOT, $USER_HOMEJVMClassPath=$(evalecho"${JVMClassPath}")# read the JVM Options in either Array or String styleJVMDefaultOptions_RAW=$(plist_get_java ':VMOptions'|xargs)if[[$JVMDefaultOptions_RAW== *Array* ]];thenJVMDefaultOptions=$(plist_get_java ':VMOptions'|grep"    "|sed's/^ */ /g'|tr -d '\n'|xargs)elseJVMDefaultOptions=${JVMDefaultOptions_RAW}fi# read StartOnMainThread and add as -XstartOnFirstThreadJVMStartOnMainThread=$(plist_get_java ':StartOnMainThread')if["${JVMStartOnMainThread}"=="true"];thenJVMDefaultOptions+=" -XstartOnFirstThread"fi# read the JVM Arguments in either Array or String style (#76) and retain spacesIFS=$'\t\n'MainArgs_RAW=$(plist_get_java ':Arguments'|xargs)if[[$MainArgs_RAW== *Array* ]];thenMainArgs=($(xargs -n1 <<<$(plist_get_java ':Arguments'|tr -d '\n'|sed -E 's/Array \{ *(.*) *\}/\1/g'|sed's/  */ /g')))elseMainArgs=($(xargs -n1 <<<$(plist_get_java ':Arguments')))fiunsetIFS# post processing of the array follows further below...# read the Java version we want to findJVMVersion=$(plist_get_java ':JVMVersion'|xargs)# post processing of the version string follows below...# read 'Info.plist' file in Oracle style
else
    stub_logger "[PlistStyle] Oracle"
 
    # set Working Directory and Java and Resources folder
    JavaFolder="${OracleJavaFolder}"
    ResourcesFolder="${OracleResourcesFolder}"
    WorkingDirectory="${OracleJavaFolder}"
 
    APP_ROOT="${AppPackageFolder}"
 
    # read the MainClass name
    JVMMainClass="$(plist_get ':JVMMainClassName')"
 
    # read the SplashFile name
    JVMSplashFile=$(plist_get ':JVMSplashFile')
 
    # read the JVM Options as an array and retain spaces
    IFS=$'\t\n'
    JVMOptions=($(plist_get ':JVMOptions' | grep "    " | sed 's/^ *//g'))
    unset IFS
    # post processing of the array follows further below...
 
    # read the ClassPath in either Array or String style
    JVMClassPath_RAW=$(plist_get ':JVMClassPath')
    if [[ $JVMClassPath_RAW == *Array* ]] ; then
        JVMClassPath=.$(plist_get ':JVMClassPath' | grep "    " | sed 's/^ */:/g' | tr -d '\n' | xargs)
        # expand variables $APP_PACKAGE, $JAVAROOT, $USER_HOME
        JVMClassPath=$(eval echo "${JVMClassPath}")
 
    elif [[ ! -z ${JVMClassPath_RAW} ]] ; then
        JVMClassPath=${JVMClassPath_RAW}
        # expand variables $APP_PACKAGE, $JAVAROOT, $USER_HOME
        JVMClassPath=$(eval echo "${JVMClassPath}")
 
    else
        #default: fallback to OracleJavaFolder
        JVMClassPath="${JavaFolder}/*"
        # Do NOT expand the default 'AppName.app/Contents/Java/*' classpath (#42)
    fi
 
    # read the JVM Default Options
    JVMDefaultOptions=$(plist_get ':JVMDefaultOptions' | grep -o " \-.*" | tr -d '\n' | xargs)
 
    # read the Main Arguments from JVMArguments key as an array and retain spaces (see #46 for naming details)
    IFS=$'\t\n'
    MainArgs=($(xargs -n1 <<<$(plist_get ':JVMArguments' | tr -d '\n' | sed -E 's/Array \{ *(.*) *\}/\1/g' | sed 's/  */ /g')))
    unset IFS
    # post processing of the array follows further below...
 
    # read the Java version we want to find
    JVMVersion=$(plist_get ':JVMVersion' | xargs)
    # post processing of the version string follows below...
fi
 
 
# (#75) check for undefined icons or icon names without .icns extension and prepare
# an osascript statement for those cases when the icon can be shown in the dialog
DialogWithIcon=""
if [ ! -z ${CFBundleIconFile} ]; then
    if [[ ${CFBundleIconFile} == *.icns ]] && [[ -f "${ResourcesFolder}/${CFBundleIconFile}" ]] ; then
        DialogWithIcon=" with icon path to resource \"${CFBundleIconFile}\" in bundle (path to me)"
    elif [[ ${CFBundleIconFile} != *.icns ]] && [[ -f "${ResourcesFolder}/${CFBundleIconFile}.icns" ]] ; then
        CFBundleIconFile+=".icns"
        DialogWithIcon=" with icon path to resource \"${CFBundleIconFile}\" in bundle (path to me)"
    fi
fi
 
 
# JVMVersion: post processing and optional splitting
if [[ ${JVMVersion} == *";"* ]]; then
    minMaxArray=(${JVMVersion//;/ })
    JVMVersion=${minMaxArray[0]//+}
    JVMMaxVersion=${minMaxArray[1]//+}
fi
stub_logger "[JavaRequirement] JVM minimum version: ${JVMVersion}"
stub_logger "[JavaRequirement] JVM maximum version: ${JVMMaxVersion}"
 
# MainArgs: replace occurences of $APP_ROOT with its content
MainArgsArr=()
for i in "${MainArgs[@]}"
do
    MainArgsArr+=("$(eval echo "$i")")
done
 
# JVMOptions: replace occurences of $APP_ROOT with its content
JVMOptionsArr=()
for i in "${JVMOptions[@]}"
do
    JVMOptionsArr+=("$(eval echo "$i")")
done
 
 
# internationalized messages
############################################
 
LANG=$(defaults read -g AppleLocale)
stub_logger "[Language] $LANG"
 
# French localization
if [[ $LANG == fr* ]] ; then
    MSG_ERROR_LAUNCHING="ERREUR au lancement de '${CFBundleName}'."
    MSG_MISSING_MAINCLASS="'MainClass' n'est pas spécifié.\nL'application Java ne peut pas être lancée."
    MSG_JVMVERSION_REQ_INVALID="La syntaxe de la version de Java demandée est invalide: %s\nVeuillez contacter le développeur de l'application."
    MSG_NO_SUITABLE_JAVA="La version de Java installée sur votre système ne convient pas.\nCe programme nécessite Java %s"
    MSG_JAVA_VERSION_OR_LATER="ou ultérieur"
    MSG_JAVA_VERSION_LATEST="(dernière mise à jour)"
    MSG_JAVA_VERSION_MAX="à %s"
    MSG_NO_SUITABLE_JAVA_CHECK="Merci de bien vouloir installer la version de Java requise."
    MSG_INSTALL_JAVA="Java doit être installé sur votre système.\nRendez-vous sur java.com et suivez les instructions d'installation..."
    MSG_LATER="Plus tard"
    MSG_VISIT_JAVA_DOT_COM="Java by Oracle"
    MSG_VISIT_ADOPTOPENJDK="Java by AdoptOpenJDK"
 
# German localization
elif [[ $LANG == de* ]] ; then
    MSG_ERROR_LAUNCHING="FEHLER beim Starten von '${CFBundleName}'."
    MSG_MISSING_MAINCLASS="Die 'MainClass' ist nicht spezifiziert!\nDie Java-Anwendung kann nicht gestartet werden!"
    MSG_JVMVERSION_REQ_INVALID="Die Syntax der angeforderten Java-Version ist ungültig: %s\nBitte kontaktieren Sie den Entwickler der App."
    MSG_NO_SUITABLE_JAVA="Es wurde keine passende Java-Version auf Ihrem System gefunden!\nDieses Programm benötigt Java %s"
    MSG_JAVA_VERSION_OR_LATER="oder neuer"
    MSG_JAVA_VERSION_LATEST="(neuste Unterversion)"
    MSG_JAVA_VERSION_MAX="bis %s"
    MSG_NO_SUITABLE_JAVA_CHECK="Stellen Sie sicher, dass die angeforderte Java-Version installiert ist."
    MSG_INSTALL_JAVA="Auf Ihrem System muss die 'Java'-Software installiert sein.\nBesuchen Sie java.com für weitere Installationshinweise."
    MSG_LATER="Später"
    MSG_VISIT_JAVA_DOT_COM="Java von Oracle"
    MSG_VISIT_ADOPTOPENJDK="Java von AdoptOpenJDK"
 
# Simplifyed Chinese localization
elif [[ $LANG == zh* ]] ; then
    MSG_ERROR_LAUNCHING="无法启动 '${CFBundleName}'."
    MSG_MISSING_MAINCLASS="没有指定 'MainClass'!\nJava程序无法启动!"
    MSG_JVMVERSION_REQ_INVALID="Java版本参数语法错误: %s\n请联系该应用的开发者。"
    MSG_NO_SUITABLE_JAVA="没有在系统中找到合适的Java版本!\n必须安装Java %s才能够使用该程序!"
    MSG_JAVA_VERSION_OR_LATER="及以上版本"
    MSG_JAVA_VERSION_LATEST="(最新版本)"
    MSG_JAVA_VERSION_MAX="最高为 %s"
    MSG_NO_SUITABLE_JAVA_CHECK="请确保系统中安装了所需的Java版本"
    MSG_INSTALL_JAVA="你需要在Mac中安装Java运行环境!\n访问 java.com 了解如何安装。"
    MSG_LATER="稍后"
    MSG_VISIT_JAVA_DOT_COM="Java by Oracle"
    MSG_VISIT_ADOPTOPENJDK="Java by AdoptOpenJDK"
 
# English default localization
else
    MSG_ERROR_LAUNCHING="ERROR launching '${CFBundleName}'."
    MSG_MISSING_MAINCLASS="'MainClass' isn't specified!\nJava application cannot be started!"
    MSG_JVMVERSION_REQ_INVALID="The syntax of the required Java version is invalid: %s\nPlease contact the App developer."
    MSG_NO_SUITABLE_JAVA="No suitable Java version found on your system!\nThis program requires Java %s"
    MSG_JAVA_VERSION_OR_LATER="or later"
    MSG_JAVA_VERSION_LATEST="(latest update)"
    MSG_JAVA_VERSION_MAX="up to %s"
    MSG_NO_SUITABLE_JAVA_CHECK="Make sure you install the required Java version."
    MSG_INSTALL_JAVA="You need to have JAVA installed on your Mac!\nVisit java.com for installation instructions..."
    MSG_LATER="Later"
    MSG_VISIT_JAVA_DOT_COM="Java by Oracle"
    MSG_VISIT_ADOPTOPENJDK="Java by AdoptOpenJDK"
fi
 
 
 
# function 'get_java_version_from_cmd()'
#
# returns Java version string from 'java -version' command
# works for both old (1.8) and new (9) version schema
#
# @param1  path to a java JVM executable
# @return  the Java version number as displayed in 'java -version' command
################################################################################
function get_java_version_from_cmd() {
    # second sed command strips " and -ea from the version string
    echo$("$1" -version 2>&1 | awk '/version/{print $3}' | sed -E 's/"//g;s/-ea//g')}# function 'extract_java_major_version()'## extract Java major version from a version string## @param1  a Java version number ('1.8.0_45') or requirement string ('1.8+')# @return  the major version (e.g. '7', '8' or '9', etc.)################################################################################functionextract_java_major_version(){echo$(echo"$1"|sed -E 's/^1\.//;s/^([0-9]+)(-ea|(\.[0-9_.]{1,7})?)(-b[0-9]+-[0-9]+)?[+*]?$/\1/')
}
 
 
# function 'get_comparable_java_version()'
#
# return comparable version for a Java version number or requirement string
#
# @param1  a Java version number ('1.8.0_45') or requirement string ('1.8+')
# @return  an 8 digit numeral ('1.8.0_45'->'08000045'; '9.1.13'->'09001013')
################################################################################
function get_comparable_java_version() {
    # cleaning: 1) remove leading '1.'; 2) remove build string (e.g. '-b14-468'); 3) remove 'a-Z' and '-*+' (e.g. '-ea'); 4) replace '_' with '.'
    local cleaned=$(echo "$1" | sed -E 's/^1\.//g;s/-b[0-9]+-[0-9]+$//g;s/[a-zA-Z+*\-]//g;s/_/./g')
    # splitting at '.' into an array
    local arr=( ${cleaned//./ } )
    # echo a string with left padded version numbers
    echo "$(printf '%02s' ${arr[0]})$(printf '%03s' ${arr[1]})$(printf '%03s' ${arr[2]})"
}
 
 
# function 'is_valid_requirement_pattern()'
#
# check whether the Java requirement is a valid requirement pattern
#
# supported requirements are for example:
# - 1.6       requires Java 6 (any update)      [1.6, 1.6.0_45, 1.6.0_88]
# - 1.6*      requires Java 6 (any update)      [1.6, 1.6.0_45, 1.6.0_88]
# - 1.6+      requires Java 6 or higher         [1.6, 1.6.0_45, 1.8, 9, etc.]
# - 1.6.0     requires Java 6 (any update)      [1.6, 1.6.0_45, 1.6.0_88]
# - 1.6.0_45  requires Java 6u45                [1.6.0_45]
# - 1.6.0_45+ requires Java 6u45 or higher      [1.6.0_45, 1.6.0_88, 1.8, etc.]
# - 9         requires Java 9 (any update)      [9.0.*, 9.1, 9.3, etc.]
# - 9*        requires Java 9 (any update)      [9.0.*, 9.1, 9.3, etc.]
# - 9+        requires Java 9 or higher         [9.0, 9.1, 10, etc.]
# - 9.1       requires Java 9.1 (any update)    [9.1.*, 9.1.2, 9.1.13, etc.]
# - 9.1*      requires Java 9.1 (any update)    [9.1.*, 9.1.2, 9.1.13, etc.]
# - 9.1+      requires Java 9.1 or higher       [9.1, 9.2, 10, etc.]
# - 9.1.3     requires Java 9.1.3               [9.1.3]
# - 9.1.3*    requires Java 9.1.3 (any update)  [9.1.3]
# - 9.1.3+    requires Java 9.1.3 or higher     [9.1.3, 9.1.4, 9.2.*, 10, etc.]
# - 10-ea     requires Java 10 (early access release)
#
# unsupported requirement patterns are for example:
# - 1.2, 1.3, 1.9       Java 2, 3 are not supported
# - 1.9                 Java 9 introduced a new versioning scheme
# - 6u45                known versioning syntax, but unsupported
# - 9-ea*, 9-ea+        early access releases paired with */+
# - 9., 9.*, 9.+        version ending with a .
# - 9.1., 9.1.*, 9.1.+  version ending with a .
# - 9.3.5.6             4 part version number is unsupported
#
# @param1  a Java requirement string ('1.8+')
# @return  boolean exit code: 0 (is valid), 1 (is not valid)
################################################################################
function is_valid_requirement_pattern() {
    local java_req=$1
    java8pattern='1\.[4-8](\.[0-9]+)?(\.0_[0-9]+)?[*+]?'
    java9pattern='(9|1[0-9])(-ea|[*+]|(\.[0-9]+){1,2}[*+]?)?'
    # test matches either old Java versioning scheme (up to 1.8) or new scheme (starting with 9)
    if [[ ${java_req} =~ ^(${java8pattern}|${java9pattern})$ ]]; then
        return 0
    else
        return 1
    fi
}
 
 
 
# determine which JVM to use
############################################
 
# default Apple JRE plugin path (< 1.6)
apple_jre_plugin="/Library/Java/Home/bin/java"
apple_jre_version=$(get_java_version_from_cmd "${apple_jre_plugin}")
# default Oracle JRE plugin path (>= 1.7)
oracle_jre_plugin="/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java"
oracle_jre_version=$(get_java_version_from_cmd "${oracle_jre_plugin}")
 
 
# first check system variable "$JAVA_HOME" -> has precedence over any other System JVM
stub_logger '[JavaSearch] Checking for$JAVA_HOME...'
if [ -n "$JAVA_HOME" ] ; then
    stub_logger "[JavaSearch] ... found JAVA_HOME with value $JAVA_HOME"
 
    # PR 26: Allow specifying "$JAVA_HOME" relative to "$AppPackageFolder"
    # which allows for bundling a custom version of Java inside your app!
    if [[ $JAVA_HOME == /* ]] ; then
        # if "$JAVA_HOME" starts with a Slash it's an absolute path
        JAVACMD="$JAVA_HOME/bin/java"else# otherwise it's a relative path to "$AppPackageFolder"
        JAVACMD="$AppPackageFolder/$JAVA_HOME/bin/java"
    fi
    JAVACMD_version=$(get_comparable_java_version $(get_java_version_from_cmd "${JAVACMD}"))
else
    stub_logger "[JavaSearch]... didn't found JAVA_HOME"
fi
 
 
# check for any other or a specific Java version
# also if $JAVA_HOME exists but isn't executable
if[ -z "${JAVACMD}"]||[! -x "${JAVACMD}"];then
    stub_logger "[JavaSearch] Checking for JavaVirtualMachines on the system ..."# reset variablesJAVACMD=""JAVACMD_version=""# first check whether JVMVersion string is a valid requirement stringif[! -z "${JVMVersion}"]&&! is_valid_requirement_pattern ${JVMVersion};thenMSG_JVMVERSION_REQ_INVALID_EXPANDED=$(printf"${MSG_JVMVERSION_REQ_INVALID}""${JVMVersion}")# log exit cause
        stub_logger "[EXIT 4] ${MSG_JVMVERSION_REQ_INVALID_EXPANDED}"# display error message with AppleScript
        osascript -e "tell application \"System Events\" to display dialog \"${MSG_ERROR_LAUNCHING}\n\n${MSG_JVMVERSION_REQ_INVALID_EXPANDED}\" with title \"${CFBundleName}\" buttons {\" OK \"} default button 1${DialogWithIcon}"# exit with errorexit4fi# then check whether JVMMaxVersion string is a valid requirement stringif[! -z "${JVMMaxVersion}"]&&! is_valid_requirement_pattern ${JVMMaxVersion};thenMSG_JVMVERSION_REQ_INVALID_EXPANDED=$(printf"${MSG_JVMVERSION_REQ_INVALID}""${JVMMaxVersion}")# log exit cause
        stub_logger "[EXIT 5] ${MSG_JVMVERSION_REQ_INVALID_EXPANDED}"# display error message with AppleScript
        osascript -e "tell application \"System Events\" to display dialog \"${MSG_ERROR_LAUNCHING}\n\n${MSG_JVMVERSION_REQ_INVALID_EXPANDED}\" with title \"${CFBundleName}\" buttons {\" OK \"} default button 1${DialogWithIcon}"# exit with errorexit5fi# find installed JavaVirtualMachines (JDK + JRE)allJVMs=()# read JDK's from '/usr/libexec/java_home -V' commandwhileread -r line;doversion=$(echo $line |awk -F $',''{print $1;}')path=$(echo $line |awk -F $'" ''{print $2;}')path+="/bin/java"allJVMs+=("$version:$path")done<<(/usr/libexec/java_home -V 2>&1|grep'^[[:space:]]')# unset while loop variablesunset version path
 
    # add Apple JRE if availableif[ -x "${apple_jre_plugin}"];thenallJVMs+=("$apple_jre_version:$apple_jre_plugin")fi# add Oracle JRE if availableif[ -x "${oracle_jre_plugin}"];thenallJVMs+=("$oracle_jre_version:$oracle_jre_plugin")fi# debug outputforiin"${allJVMs[@]}"do
        stub_logger "[JavaSearch] ... found JVM: $i"done# determine JVMs matching the min/max version requirementminC=$(get_comparable_java_version ${JVMVersion})maxC=$(get_comparable_java_version ${JVMMaxVersion})matchingJVMs=()foriin"${allJVMs[@]}"do# split JVM string at ':' delimiter to retain spaces in $path substringIFS=: arr=($i);unsetIFS# [0] JVM version numberver=${arr[0]}# comparable JVM version numbercomp=$(get_comparable_java_version $ver)# [1] JVM pathpath="${arr[1]}"# construct string item for adding to the "matchingJVMs" array
        item="$comp:$ver:$path"
 
        # pre-requisite: current version number needs to be greater than min version number
        if [ "$comp" -ge "$minC" ] ; then
 
            # perform max version checks if max version requirement is present
            if [ ! -z ${JVMMaxVersion} ] ; then
 
                # max version requirement ends with '*' modifier
                if [[ ${JVMMaxVersion} == *\* ]] ; then
 
                    # use the '*' modifier from the max version string as wildcard for a 'starts with' comparison
                    # and check whether the current version number starts with the max version wildcard string
                    if [[ ${ver} == ${JVMMaxVersion} ]]; then
                        matchingJVMs+=("$item")
 
                    # or whether the current comparable version is lower than the comparable max version
                    elif [ "$comp" -le "$maxC" ] ; then
                        matchingJVMs+=("$item")
                    fi
 
                # max version requirement ends with '+' modifier -> always add this version if it's greater than $min
                # because a max requirement with + modifier doesn't make sense
                elif [[ ${JVMMaxVersion} == *+ ]] ; then
                    matchingJVMs+=("$item")
 
                # matches 6 zeros at the end of the max version string (e.g. for 1.8, 9)
                # -> then the max version string should be treated like with a '*' modifier at the end
                #elif [[ ${maxC} =~ ^[0-9]{2}0{6}$ ]] && [ "$comp" -le $(( ${maxC#0} +999)) ] ; then
                #    matchingJVMs+=("$item")
 
                # matches 3 zeros at the end of the max version string (e.g. for 9.1, 10.3)
                # -> then the max version string should be treated like with a '*' modifier at the end
                #elif [[ ${maxC} =~ ^[0-9]{5}0{3}$ ]] && [ "$comp" -le "${maxC}" ] ; then
                #    matchingJVMs+=("$item")
 
                # matches standard requirements without modifier
                elif [ "$comp" -le "$maxC" ]; then
                    matchingJVMs+=("$item")
                fi
 
            # no max version requirement:
 
            # min version requirement ends with '+' modifier
            # -> always add the current version because it's greater than $min
            elif [[ ${JVMVersion} == *+ ]] ; then
                matchingJVMs+=("$item")
 
            # min version requirement ends with '*' modifier
            # -> use the '*' modifier from the min version string as wildcard for a 'starts with' comparison
            #    and check whether the current version number starts with the min version wildcard string
            elif [[ ${JVMVersion} == *\* ]] ; then
                if [[ ${ver} == ${JVMVersion} ]] ; then
                    matchingJVMs+=("$item")
                fi
 
            # compare the min version against the current version with an additional * wildcard for a 'starts with' comparison
            # -> e.g. add 1.8.0_44 when the requirement is 1.8
            elif [[ ${ver} == ${JVMVersion}* ]] ; then
                    matchingJVMs+=("$item")
            fi
        fi
    done
    # unset for loop variables
    unset arr ver comp path item
 
    # debug output
    for i in "${matchingJVMs[@]}"
    do
        stub_logger "[JavaSearch]... ... matches all requirements: $i"
    done
 
 
    # sort the matching JavaVirtualMachines by version number
    # https://stackoverflow.com/a/11789688/1128689
    IFS=$'\n' matchingJVMs=($(sort -nr <<<"${matchingJVMs[*]}"))
    unset IFS
 
 
    # get the highest matching JVM
    for ((i =0; i < ${#matchingJVMs[@]}; i++));
    do
        # split JVM string at ':' delimiter to retain spaces in $path substring
        IFS=: arr=(${matchingJVMs[$i]}) ; unset IFS
        # [0] comparable JVM version number
        comp=${arr[0]}
        # [1] JVM version number
        ver=${arr[1]}
        # [2] JVM path
        path="${arr[2]}"
 
        # use current value as JAVACMD if it's executable
        if [ -x "$path" ] ; then
            JAVACMD="$path"
            JAVACMD_version=$comp
            break
        fi
    done
    # unset for loop variables
    unset arr comp ver path
fi
 
# log the Java Command and the extracted version number
stub_logger "[JavaCommand]'$JAVACMD'"
stub_logger "[JavaVersion]$(get_java_version_from_cmd "${JAVACMD}")${JAVACMD_version:+/ $JAVACMD_version}"
 
 
 
if [ -z "${JAVACMD}" ] || [ ! -x "${JAVACMD}" ] ; then
 
    # different error messages when a specific JVM was required
    if [ ! -z "${JVMVersion}" ] ; then
        # display human readable java version (#28)
        java_version_hr=$(echo ${JVMVersion} | sed -E 's/^1\.([0-9+*]+)$/ \1/g' | sed "s/+/ ${MSG_JAVA_VERSION_OR_LATER}/;s/*/ ${MSG_JAVA_VERSION_LATEST}/")
        MSG_NO_SUITABLE_JAVA_EXPANDED=$(printf"${MSG_NO_SUITABLE_JAVA}""${java_version_hr}").
 
        if [ ! -z "${JVMMaxVersion}" ] ; then
            java_version_hr=$(extract_java_major_version ${JVMVersion})
            java_version_max_hr=$(echo ${JVMMaxVersion} | sed -E 's/^1\.([0-9+*]+)$/ \1/g' | sed "s/+//;s/*/ ${MSG_JAVA_VERSION_LATEST}/")
            MSG_NO_SUITABLE_JAVA_EXPANDED="$(printf"${MSG_NO_SUITABLE_JAVA}""${java_version_hr}")$(printf"${MSG_JAVA_VERSION_MAX}""${java_version_max_hr}")"
        fi
 
        # log exit cause
        stub_logger "[EXIT 3]${MSG_NO_SUITABLE_JAVA_EXPANDED}"
 
        # display error message with AppleScript
        osascript -e "tell application \"System Events\" to display dialog \"${MSG_ERROR_LAUNCHING}\n\n${MSG_NO_SUITABLE_JAVA_EXPANDED}\n${MSG_NO_SUITABLE_JAVA_CHECK}\" with title \"${CFBundleName}\"  buttons {\" OK \", \"${MSG_VISIT_JAVA_DOT_COM}\", \"${MSG_VISIT_ADOPTOPENJDK}\"} default button 1${DialogWithIcon}" \
                -e "set response to button returned of the result" \
                -e "if response is \"${MSG_VISIT_JAVA_DOT_COM}\" thenopen location \"https://www.java.com/download/\"" \
                -e "if response is \"${MSG_VISIT_ADOPTOPENJDK}\" thenopen location \"https://adoptopenjdk.net/releases.html\""
        # exit with error
        exit 3
 
    else
        # log exit cause
        stub_logger "[EXIT 1]${MSG_ERROR_LAUNCHING}"
        # display error message with AppleScript
        osascript -e "tell application \"System Events\" to display dialog \"${MSG_ERROR_LAUNCHING}\n\n${MSG_INSTALL_JAVA}\" with title \"${CFBundleName}\" buttons {\"${MSG_LATER}\", \"${MSG_VISIT_JAVA_DOT_COM}\", \"${MSG_VISIT_ADOPTOPENJDK}\"} default button 1${DialogWithIcon}" \
                    -e "set response to button returned of the result" \
                    -e "if response is \"${MSG_VISIT_JAVA_DOT_COM}\" thenopen location \"https://www.java.com/download/\"" \
                    -e "if response is \"${MSG_VISIT_ADOPTOPENJDK}\" thenopen location \"https://adoptopenjdk.net/releases.html\""
        # exit with error
        exit 1
    fi
fi
 
 
 
# MainClass check
############################################
 
if [ -z "${JVMMainClass}" ]; then
    # log exit cause
    stub_logger "[EXIT 2]${MSG_MISSING_MAINCLASS}"
    # display error message with AppleScript
    osascript -e "tell application \"System Events\" to display dialog \"${MSG_ERROR_LAUNCHING}\n\n${MSG_MISSING_MAINCLASS}\" with title \"${CFBundleName}\" buttons {\" OK \"} default button 1${DialogWithIcon}"
    # exit with error
    exit 2
fi
 
 
 
# execute $JAVACMD and do some preparation
############################################
 
# enable drag&drop to the dock icon
export CFProcessPath="$0"
 
# remove Apples ProcessSerialNumber from passthru arguments (#39)
if [[ "$*" == -psn* ]] ; then
    ArgsPassthru=()
else
    ArgsPassthru=("$@")
fi
 
# change to Working Directory based upon Apple/Oracle Plist info
cd "${WorkingDirectory}" || exit 13
stub_logger "[WorkingDirectory]${WorkingDirectory}"
 
# execute Java and set
# - classpath
# - splash image
# - dock icon
# - app name
# - JVM options / properties (-D)
# - JVM default options (-X)
# - main class
# - main class arguments
# - passthrough arguments from Terminal or Drag'n'Drop to Finder icon
stub_logger "[Exec]\"$JAVACMD\" -cp \"${JVMClassPath}\" -splash:\"${ResourcesFolder}/${JVMSplashFile}\" -Xdock:icon=\"${ResourcesFolder}/${CFBundleIconFile}\" -Xdock:name=\"${CFBundleName}\" ${JVMOptionsArr:+$(printf "'%s' " "${JVMOptionsArr[@]}")}${JVMDefaultOptions:+$JVMDefaultOptions }${JVMMainClass}${MainArgsArr:+ $(printf "'%s' " "${MainArgsArr[@]}")}${ArgsPassthru:+ $(printf "'%s' " "${ArgsPassthru[@]}")}"
exec "${JAVACMD}" \
        -cp "${JVMClassPath}" \
        -splash:"${ResourcesFolder}/${JVMSplashFile}" \
        -Xdock:icon="${ResourcesFolder}/${CFBundleIconFile}" \
        -Xdock:name="${CFBundleName}" \
        ${JVMOptionsArr:+"${JVMOptionsArr[@]}" }\
        ${JVMDefaultOptions:+$JVMDefaultOptions }\
        "${JVMMainClass}"\
        ${MainArgsArr:+ "${MainArgsArr[@]}"}\
        ${ArgsPassthru:+ "${ArgsPassthru[@]}"}

二、开使用JD-GUI工具

1.点击左上角的文件夹图标

,

2.将包含

.class

文件的

文件夹

拖到该区域,注意这里将

文件夹

拖入才可以哦!!!例如本例中将文件夹

mashibing

拖到框内:

在这里插入图片描述

3.选择一个

.class

文件打开,例如本例中选中

TestJava.class

文件,你也可以随意选中一个文件打开都行,不一定是

.class

格式,然后点击右下角

打开

按钮:

在这里插入图片描述

4.可以看到左边是文件夹目录栏,右边就是

.class

反编译后的内容,如果本来就是

.java

文件,就不会备反编译:

在这里插入图片描述
在这里插入图片描述
可以看出来,

.java

文件被编译成

.class

文件后,我们的注释和空格都被去掉了,所以反编译出来的内容也不包含注释和空格。

标签: macos java bash

本文转载自: https://blog.csdn.net/SSY_1992/article/details/130282143
版权归原作者 爱勤海之旅 所有, 如有侵权,请联系我们删除。

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