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阅读指南
开篇说明
现在的反编译软件繁多，Apktool，JD-GUI，dedexer，IDA Pro等等，每种反编译工具都有各自使用的场景，例如Apktool我们在反编译apk类型文件时会用到，JD-GUI则是常用来反编译Java中的class文件，或者Jar等源文件；
概念理解
【1】什么是反编译？
简单的说，就是将机器语言转换成我们能看懂的语言，这个过程就叫反编译，例如Java中的class文件反编译后，就能变成我们日常开发写的代码xxx.java文件；
【2】反编译是否一定能成功?
不一定，随着现在很多代码编译中都会加入代码混淆，加密，或是加壳等等技术，加大反编译的难度和降低反编译代码的可读性，不过如果想完全避免反编译也是不可能的。只是反编译的还原度的大小问题了；
一、基础环境说明
考虑环境因素，大家适当的对比自己的软硬件环境情况分析～请仔细阅读硬件、软件环境
1.1 硬件环境
MacOS Monterey 版本 12.6.8 Apple M1
1.2 软件环境
JD-GUI版本：
jd-gui-osx-1.6.6
二、下载与安装
Github下载JD-GUI软件github java-decompiler/jd-gui Public
2.1 选择对应版本
macOS系统我们选择
jd-gui-osx-1.6.6.tar
压缩包即可；
2.2 解压运行排除异常：
解压后，进入文件打开JD-GUI;
【注】运行时，
需要注意自己环境已经安装了JDK
，否则你可能会遇到这样的错误：
若是确认JDK安装后，仍然提示该错误，需要修改文件->
显示包内容->Contents->MacOs->universalJavaApplicationStub.sh;
将内容替换成下面的内容：
#!/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-ne0];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[$exitcode-eq0];then
stub_logger "[PlistStyle] Apple"# set Java and Resources folderJavaFolder="${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:$path")done<<(/usr/libexec/java_home -V2>&1|grep'^[[:space:]]')# unset while loop variablesunset version path
# add Apple JRE if availableif[-x"${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[@]}"}
2.3 关于使用
打开软件，选择自己要反编译的文件即可；
确认文件打开之后，我们就能看到反编译的源代码了；
三、最后
Windows的宝子们，方法上大同小异的，除了下载包区分一下，其他基本一致的问题；
本文转载自: https://blog.csdn.net/qq_39611212/article/details/140000642
版权归原作者 秋刀prince 所有， 如有侵权，请联系我们删除。
版权归原作者 秋刀prince 所有， 如有侵权，请联系我们删除。