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【JD-GUI】MacOS 中使用Java反编译工具JD-GUI

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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；

在这里插入图片描述

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

  1. MacOS Monterey 版本 12.6.8 Apple M1

1.2 软件环境

JD-GUI版本：

  1. 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

  1. jd-gui-osx-1.6.6.tar

压缩包即可；

在这里插入图片描述

2.2 解压运行排除异常：

解压后，进入文件打开JD-GUI;
在这里插入图片描述
【注】运行时，

  1. 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：

在这里插入图片描述
若是确认JDK安装后，仍然提示该错误，需要修改文件->

  1. 显示包内容->Contents->MacOs->universalJavaApplicationStub.sh;

在这里插入图片描述
将内容替换成下面的内容：

  1. #!/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(){
  2.     syslog -s-k\
  3.         Facility com.apple.console \
  4.         Level Notice \
  5.         Sender "$(basename"$0")"\
  6.         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")
  7. 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="${AppPackageFolder}"/Contents/Resources/Java
  8.  
  9. # set Apple's Resources folderAppleResourcesFolder="${AppPackageFolder}"/Contents/Resources
  10.  
  11. # set Oracle's Java folderOracleJavaFolder="${AppPackageFolder}"/Contents/Java
  12.  
  13. # set Oracle's Resources folderOracleResourcesFolder="${AppPackageFolder}"/Contents/Resources
  14.  
  15. # set path to Info.plist in bundleInfoPlistFile="${AppPackageFolder}"/Contents/Info.plist
  16.  
  17. # 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(){
  18.     /usr/libexec/PlistBuddy -c"print $1""${InfoPlistFile}"2> /dev/null
  19. }# 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(){
  20.     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=$(plist_get ':CFBundleIconFile')# check Info.plist for Apple style Java keys -> if key :Java is present, parse in apple mode
  21. /usr/libexec/PlistBuddy -c"print :Java""${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
  22.     /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[$exitcode-eq0];then
  23.     stub_logger "[PlistStyle] Apple"# set Java and Resources folderJavaFolder="${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=$(plist_get_java ':JVMVersion'|xargs)# post processing of the version string follows below...# read 'Info.plist' file in Oracle style
  24. else
  25.     stub_logger "[PlistStyle] Oracle"
  26.  
  27.     # set Working Directory and Java and Resources folder
  28.     JavaFolder="${OracleJavaFolder}"
  29.     ResourcesFolder="${OracleResourcesFolder}"
  30.     WorkingDirectory="${OracleJavaFolder}"
  31.  
  32.     APP_ROOT="${AppPackageFolder}"
  33.  
  34.     # read the MainClass name
  35.     JVMMainClass="$(plist_get ':JVMMainClassName')"
  36.  
  37.     # read the SplashFile name
  38.     JVMSplashFile=$(plist_get ':JVMSplashFile')
  39.  
  40.     # read the JVM Options as an array and retain spaces
  41.     IFS=$'\t\n'
  42.     JVMOptions=($(plist_get ':JVMOptions' | grep "    " | sed 's/^ *//g'))
  43.     unset IFS
  44.     # post processing of the array follows further below...
  45.  
  46.     # read the ClassPath in either Array or String style
  47.     JVMClassPath_RAW=$(plist_get ':JVMClassPath')
  48.     if [[ $JVMClassPath_RAW == *Array* ]] ; then
  49.         JVMClassPath=.$(plist_get ':JVMClassPath' | grep "    " | sed 's/^ */:/g' | tr -d '\n' | xargs)
  50.         # expand variables $APP_PACKAGE, $JAVAROOT, $USER_HOME
  51.         JVMClassPath=$(eval echo "${JVMClassPath}")
  52.  
  53.     elif [[ ! -z ${JVMClassPath_RAW} ]] ; then
  54.         JVMClassPath=${JVMClassPath_RAW}
  55.         # expand variables $APP_PACKAGE, $JAVAROOT, $USER_HOME
  56.         JVMClassPath=$(eval echo "${JVMClassPath}")
  57.  
  58.     else
  59.         #default: fallback to OracleJavaFolder
  60.         JVMClassPath="${JavaFolder}/*"
  61.         # Do NOT expand the default 'AppName.app/Contents/Java/*' classpath (#42)
  62.     fi
  63.  
  64.     # read the JVM Default Options
  65.     JVMDefaultOptions=$(plist_get ':JVMDefaultOptions' | grep -o " \-.*" | tr -d '\n' | xargs)
  66.  
  67.     # read the Main Arguments from JVMArguments key as an array and retain spaces (see #46 for naming details)
  68.     IFS=$'\t\n'
  69.     MainArgs=($(xargs -n1 <<<$(plist_get ':JVMArguments' | tr -d '\n' | sed -E 's/Array \{ *(.*) *\}/\1/g' | sed 's/  */ /g')))
  70.     unset IFS
  71.     # post processing of the array follows further below...
  72.  
  73.     # read the Java version we want to find
  74.     JVMVersion=$(plist_get ':JVMVersion' | xargs)
  75.     # post processing of the version string follows below...
  76. fi
  77.  
  78.  
  79. # (#75) check for undefined icons or icon names without .icns extension and prepare
  80. # an osascript statement for those cases when the icon can be shown in the dialog
  81. DialogWithIcon=""
  82. if [ ! -z ${CFBundleIconFile} ]; then
  83.     if [[ ${CFBundleIconFile} == *.icns ]] && [[ -f "${ResourcesFolder}/${CFBundleIconFile}" ]] ; then
  84.         DialogWithIcon=" with icon path to resource \"${CFBundleIconFile}\" in bundle (path to me)"
  85.     elif [[ ${CFBundleIconFile} != *.icns ]] && [[ -f "${ResourcesFolder}/${CFBundleIconFile}.icns" ]] ; then
  86.         CFBundleIconFile+=".icns"
  87.         DialogWithIcon=" with icon path to resource \"${CFBundleIconFile}\" in bundle (path to me)"
  88.     fi
  89. fi
  90.  
  91.  
  92. # JVMVersion: post processing and optional splitting
  93. if [[ ${JVMVersion} == *";"* ]]; then
  94.     minMaxArray=(${JVMVersion//;/ })
  95.     JVMVersion=${minMaxArray[0]//+}
  96.     JVMMaxVersion=${minMaxArray[1]//+}
  97. fi
  98. stub_logger "[JavaRequirement] JVM minimum version: ${JVMVersion}"
  99. stub_logger "[JavaRequirement] JVM maximum version: ${JVMMaxVersion}"
  100.  
  101. # MainArgs: replace occurences of $APP_ROOT with its content
  102. MainArgsArr=()
  103. for i in "${MainArgs[@]}"
  104. do
  105.     MainArgsArr+=("$(eval echo "$i")")
  106. done
  107.  
  108. # JVMOptions: replace occurences of $APP_ROOT with its content
  109. JVMOptionsArr=()
  110. for i in "${JVMOptions[@]}"
  111. do
  112.     JVMOptionsArr+=("$(eval echo "$i")")
  113. done
  114.  
  115.  
  116. # internationalized messages
  117. ############################################
  118.  
  119. LANG=$(defaults read -g AppleLocale)
  120. stub_logger "[Language] $LANG"
  121.  
  122. # French localization
  123. if [[ $LANG == fr* ]] ; then
  124.     MSG_ERROR_LAUNCHING="ERREUR au lancement de '${CFBundleName}'."
  125.     MSG_MISSING_MAINCLASS="'MainClass' n'est pas spécifié.\nL'application Java ne peut pas être lancée."
  126.     MSG_JVMVERSION_REQ_INVALID="La syntaxe de la version de Java demandée est invalide: %s\nVeuillez contacter le développeur de l'application."
  127.     MSG_NO_SUITABLE_JAVA="La version de Java installée sur votre système ne convient pas.\nCe programme nécessite Java %s"
  128.     MSG_JAVA_VERSION_OR_LATER="ou ultérieur"
  129.     MSG_JAVA_VERSION_LATEST="(dernière mise à jour)"
  130.     MSG_JAVA_VERSION_MAX="à %s"
  131.     MSG_NO_SUITABLE_JAVA_CHECK="Merci de bien vouloir installer la version de Java requise."
  132.     MSG_INSTALL_JAVA="Java doit être installé sur votre système.\nRendez-vous sur java.com et suivez les instructions d'installation..."
  133.     MSG_LATER="Plus tard"
  134.     MSG_VISIT_JAVA_DOT_COM="Java by Oracle"
  135.     MSG_VISIT_ADOPTOPENJDK="Java by AdoptOpenJDK"
  136.  
  137. # German localization
  138. elif [[ $LANG == de* ]] ; then
  139.     MSG_ERROR_LAUNCHING="FEHLER beim Starten von '${CFBundleName}'."
  140.     MSG_MISSING_MAINCLASS="Die 'MainClass' ist nicht spezifiziert!\nDie Java-Anwendung kann nicht gestartet werden!"
  141.     MSG_JVMVERSION_REQ_INVALID="Die Syntax der angeforderten Java-Version ist ungültig: %s\nBitte kontaktieren Sie den Entwickler der App."
  142.     MSG_NO_SUITABLE_JAVA="Es wurde keine passende Java-Version auf Ihrem System gefunden!\nDieses Programm benötigt Java %s"
  143.     MSG_JAVA_VERSION_OR_LATER="oder neuer"
  144.     MSG_JAVA_VERSION_LATEST="(neuste Unterversion)"
  145.     MSG_JAVA_VERSION_MAX="bis %s"
  146.     MSG_NO_SUITABLE_JAVA_CHECK="Stellen Sie sicher, dass die angeforderte Java-Version installiert ist."
  147.     MSG_INSTALL_JAVA="Auf Ihrem System muss die 'Java'-Software installiert sein.\nBesuchen Sie java.com für weitere Installationshinweise."
  148.     MSG_LATER="Später"
  149.     MSG_VISIT_JAVA_DOT_COM="Java von Oracle"
  150.     MSG_VISIT_ADOPTOPENJDK="Java von AdoptOpenJDK"
  151.  
  152. # Simplifyed Chinese localization
  153. elif [[ $LANG == zh* ]] ; then
  154.     MSG_ERROR_LAUNCHING="无法启动 '${CFBundleName}'."
  155.     MSG_MISSING_MAINCLASS="没有指定 'MainClass'！\nJava程序无法启动!"
  156.     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。"
  157.     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！"
  158.     MSG_JAVA_VERSION_OR_LATER="及以上版本"
  159.     MSG_JAVA_VERSION_LATEST="（最新版本）"
  160.     MSG_JAVA_VERSION_MAX="最高为 %s"
  161.     MSG_NO_SUITABLE_JAVA_CHECK="请确保系统中安装了所需的Java版本"
  162.     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。"
  163.     MSG_LATER="稍后"
  164.     MSG_VISIT_JAVA_DOT_COM="Java by Oracle"
  165.     MSG_VISIT_ADOPTOPENJDK="Java by AdoptOpenJDK"
  166.  
  167. # English default localization
  168. else
  169.     MSG_ERROR_LAUNCHING="ERROR launching '${CFBundleName}'."
  170.     MSG_MISSING_MAINCLASS="'MainClass' isn't specified!\nJava application cannot be started!"
  171.     MSG_JVMVERSION_REQ_INVALID="The syntax of the required Java version is invalid: %s\nPlease contact the App developer."
  172.     MSG_NO_SUITABLE_JAVA="No suitable Java version found on your system!\nThis program requires Java %s"
  173.     MSG_JAVA_VERSION_OR_LATER="or later"
  174.     MSG_JAVA_VERSION_LATEST="(latest update)"
  175.     MSG_JAVA_VERSION_MAX="up to %s"
  176.     MSG_NO_SUITABLE_JAVA_CHECK="Make sure you install the required Java version."
  177.     MSG_INSTALL_JAVA="You need to have JAVA installed on your Mac!\nVisit java.com for installation instructions..."
  178.     MSG_LATER="Later"
  179.     MSG_VISIT_JAVA_DOT_COM="Java by Oracle"
  180.     MSG_VISIT_ADOPTOPENJDK="Java by AdoptOpenJDK"
  181. fi
  182.  
  183.  
  184.  
  185. # function 'get_java_version_from_cmd()'
  186. #
  187. # returns Java version string from 'java -version' command
  188. # works for both old (1.8) and new (9) version schema
  189. #
  190. # @param1  path to a java JVM executable
  191. # @return  the Java version number as displayed in 'java -version' command
  192. ################################################################################
  193. function get_java_version_from_cmd() {
  194.     # second sed command strips " and -ea from the version string
  195.     echo$("$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/')
  196. }
  197.  
  198.  
  199. # function 'get_comparable_java_version()'
  200. #
  201. # return comparable version for a Java version number or requirement string
  202. #
  203. # @param1  a Java version number ('1.8.0_45') or requirement string ('1.8+')
  204. # @return  an 8 digit numeral ('1.8.0_45'->'08000045'; '9.1.13'->'09001013')
  205. ################################################################################
  206. function get_comparable_java_version() {
  207.     # cleaning: 1) remove leading '1.'; 2) remove build string (e.g. '-b14-468'); 3) remove 'a-Z' and '-*+' (e.g. '-ea'); 4) replace '_' with '.'
  208.     local cleaned=$(echo "$1" | sed -E 's/^1\.//g;s/-b[0-9]+-[0-9]+$//g;s/[a-zA-Z+*\-]//g;s/_/./g')
  209.     # splitting at '.' into an array
  210.     local arr=( ${cleaned//./ } )
  211.     # echo a string with left padded version numbers
  212.     echo "$(printf '%02s' ${arr[0]})$(printf '%03s' ${arr[1]})$(printf '%03s' ${arr[2]})"
  213. }
  214.  
  215.  
  216. # function 'is_valid_requirement_pattern()'
  217. #
  218. # check whether the Java requirement is a valid requirement pattern
  219. #
  220. # supported requirements are for example:
  221. # - 1.6       requires Java 6 (any update)      [1.6, 1.6.0_45, 1.6.0_88]
  222. # - 1.6*      requires Java 6 (any update)      [1.6, 1.6.0_45, 1.6.0_88]
  223. # - 1.6+      requires Java 6 or higher         [1.6, 1.6.0_45, 1.8, 9, etc.]
  224. # - 1.6.0     requires Java 6 (any update)      [1.6, 1.6.0_45, 1.6.0_88]
  225. # - 1.6.0_45  requires Java 6u45                [1.6.0_45]
  226. # - 1.6.0_45+ requires Java 6u45 or higher      [1.6.0_45, 1.6.0_88, 1.8, etc.]
  227. # - 9         requires Java 9 (any update)      [9.0.*, 9.1, 9.3, etc.]
  228. # - 9*        requires Java 9 (any update)      [9.0.*, 9.1, 9.3, etc.]
  229. # - 9+        requires Java 9 or higher         [9.0, 9.1, 10, etc.]
  230. # - 9.1       requires Java 9.1 (any update)    [9.1.*, 9.1.2, 9.1.13, etc.]
  231. # - 9.1*      requires Java 9.1 (any update)    [9.1.*, 9.1.2, 9.1.13, etc.]
  232. # - 9.1+      requires Java 9.1 or higher       [9.1, 9.2, 10, etc.]
  233. # - 9.1.3     requires Java 9.1.3               [9.1.3]
  234. # - 9.1.3*    requires Java 9.1.3 (any update)  [9.1.3]
  235. # - 9.1.3+    requires Java 9.1.3 or higher     [9.1.3, 9.1.4, 9.2.*, 10, etc.]
  236. # - 10-ea     requires Java 10 (early access release)
  237. #
  238. # unsupported requirement patterns are for example:
  239. # - 1.2, 1.3, 1.9       Java 2, 3 are not supported
  240. # - 1.9                 Java 9 introduced a new versioning scheme
  241. # - 6u45                known versioning syntax, but unsupported
  242. # - 9-ea*, 9-ea+        early access releases paired with */+
  243. # - 9., 9.*, 9.+        version ending with a .
  244. # - 9.1., 9.1.*, 9.1.+  version ending with a .
  245. # - 9.3.5.6             4 part version number is unsupported
  246. #
  247. # @param1  a Java requirement string ('1.8+')
  248. # @return  boolean exit code: 0 (is valid), 1 (is not valid)
  249. ################################################################################
  250. function is_valid_requirement_pattern() {
  251.     local java_req=$1
  252.     java8pattern='1\.[4-8](\.[0-9]+)?(\.0_[0-9]+)?[*+]?'
  253.     java9pattern='(9|1[0-9])(-ea|[*+]|(\.[0-9]+){1,2}[*+]?)?'
  254.     # test matches either old Java versioning scheme (up to 1.8) or new scheme (starting with 9)
  255.     if [[ ${java_req} =~ ^(${java8pattern}|${java9pattern})$ ]]; then
  256.         return 0
  257.     else
  258.         return 1
  259.     fi
  260. }
  261.  
  262.  
  263.  
  264. # determine which JVM to use
  265. ############################################
  266.  
  267. # default Apple JRE plugin path (< 1.6)
  268. apple_jre_plugin="/Library/Java/Home/bin/java"
  269. apple_jre_version=$(get_java_version_from_cmd "${apple_jre_plugin}")
  270. # default Oracle JRE plugin path (>= 1.7)
  271. oracle_jre_plugin="/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java"
  272. oracle_jre_version=$(get_java_version_from_cmd "${oracle_jre_plugin}")
  273.  
  274.  
  275. # first check system variable "$JAVA_HOME" -> has precedence over any other System JVM
  276. stub_logger '[JavaSearch] Checking for$JAVA_HOME...'
  277. if [ -n "$JAVA_HOME" ] ; then
  278.     stub_logger "[JavaSearch] ... found JAVA_HOME with value $JAVA_HOME"
  279.  
  280.     # PR 26: Allow specifying "$JAVA_HOME" relative to "$AppPackageFolder"
  281.     # which allows for bundling a custom version of Java inside your app!
  282.     if [[ $JAVA_HOME == /* ]] ; then
  283.         # if "$JAVA_HOME" starts with a Slash it's an absolute path
  284.         JAVACMD="$JAVA_HOME/bin/java"else# otherwise it's a relative path to "$AppPackageFolder"
  285.         JAVACMD="$AppPackageFolder/$JAVA_HOME/bin/java"
  286.     fi
  287.     JAVACMD_version=$(get_comparable_java_version $(get_java_version_from_cmd "${JAVACMD}"))
  288. else
  289.     stub_logger "[JavaSearch]... didn't found JAVA_HOME"
  290. fi
  291.  
  292.  
  293. # check for any other or a specific Java version
  294. # also if $JAVA_HOME exists but isn't executable
  295. if[-z"${JAVACMD}"]||[!-x"${JAVACMD}"];then
  296.     stub_logger "[JavaSearch] Checking for JavaVirtualMachines on the system ..."# reset variablesJAVACMD=""JAVACMD_version=""# first check whether JVMVersion string is a valid requirement stringif[!-z"${JVMVersion}"]&&! is_valid_requirement_pattern ${JVMVersion};thenMSG_JVMVERSION_REQ_INVALID_EXPANDED=$(printf"${MSG_JVMVERSION_REQ_INVALID}""${JVMVersion}")# log exit cause
  297.         stub_logger "[EXIT 4] ${MSG_JVMVERSION_REQ_INVALID_EXPANDED}"# display error message with AppleScript
  298.         osascript -e"tell application \"System Events\" to display dialog \"${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
  299.         stub_logger "[EXIT 5] ${MSG_JVMVERSION_REQ_INVALID_EXPANDED}"# display error message with AppleScript
  300.         osascript -e"tell application \"System Events\" to display dialog \"${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:$path")done<<(/usr/libexec/java_home -V2>&1|grep'^[[:space:]]')# unset while loop variablesunset version path
  301.  
  302.     # add Apple JRE if availableif[-x"${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
  303.         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
  304.         item="$comp:$ver:$path"
  305.  
  306.         # pre-requisite: current version number needs to be greater than min version number
  307.         if [ "$comp" -ge "$minC" ] ; then
  308.  
  309.             # perform max version checks if max version requirement is present
  310.             if [ ! -z ${JVMMaxVersion} ] ; then
  311.  
  312.                 # max version requirement ends with '*' modifier
  313.                 if [[ ${JVMMaxVersion} == *\* ]] ; then
  314.  
  315.                     # use the '*' modifier from the max version string as wildcard for a 'starts with' comparison
  316.                     # and check whether the current version number starts with the max version wildcard string
  317.                     if [[ ${ver} == ${JVMMaxVersion} ]]; then
  318.                         matchingJVMs+=("$item")
  319.  
  320.                     # or whether the current comparable version is lower than the comparable max version
  321.                     elif [ "$comp" -le "$maxC" ] ; then
  322.                         matchingJVMs+=("$item")
  323.                     fi
  324.  
  325.                 # max version requirement ends with '+' modifier -> always add this version if it's greater than $min
  326.                 # because a max requirement with + modifier doesn't make sense
  327.                 elif [[ ${JVMMaxVersion} == *+ ]] ; then
  328.                     matchingJVMs+=("$item")
  329.  
  330.                 # matches 6 zeros at the end of the max version string (e.g. for 1.8, 9)
  331.                 # -> then the max version string should be treated like with a '*' modifier at the end
  332.                 #elif [[ ${maxC} =~ ^[0-9]{2}0{6}$ ]] && [ "$comp" -le $(( ${maxC#0} +999)) ] ; then
  333.                 #    matchingJVMs+=("$item")
  334.  
  335.                 # matches 3 zeros at the end of the max version string (e.g. for 9.1, 10.3)
  336.                 # -> then the max version string should be treated like with a '*' modifier at the end
  337.                 #elif [[ ${maxC} =~ ^[0-9]{5}0{3}$ ]] && [ "$comp" -le "${maxC}" ] ; then
  338.                 #    matchingJVMs+=("$item")
  339.  
  340.                 # matches standard requirements without modifier
  341.                 elif [ "$comp" -le "$maxC" ]; then
  342.                     matchingJVMs+=("$item")
  343.                 fi
  344.  
  345.             # no max version requirement:
  346.  
  347.             # min version requirement ends with '+' modifier
  348.             # -> always add the current version because it's greater than $min
  349.             elif [[ ${JVMVersion} == *+ ]] ; then
  350.                 matchingJVMs+=("$item")
  351.  
  352.             # min version requirement ends with '*' modifier
  353.             # -> use the '*' modifier from the min version string as wildcard for a 'starts with' comparison
  354.             #    and check whether the current version number starts with the min version wildcard string
  355.             elif [[ ${JVMVersion} == *\* ]] ; then
  356.                 if [[ ${ver} == ${JVMVersion} ]] ; then
  357.                     matchingJVMs+=("$item")
  358.                 fi
  359.  
  360.             # compare the min version against the current version with an additional * wildcard for a 'starts with' comparison
  361.             # -> e.g. add 1.8.0_44 when the requirement is 1.8
  362.             elif [[ ${ver} == ${JVMVersion}* ]] ; then
  363.                     matchingJVMs+=("$item")
  364.             fi
  365.         fi
  366.     done
  367.     # unset for loop variables
  368.     unset arr ver comp path item
  369.  
  370.     # debug output
  371.     for i in "${matchingJVMs[@]}"
  372.     do
  373.         stub_logger "[JavaSearch]... ... matches all requirements: $i"
  374.     done
  375.  
  376.  
  377.     # sort the matching JavaVirtualMachines by version number
  378.     # https://stackoverflow.com/a/11789688/1128689
  379.     IFS=$'\n' matchingJVMs=($(sort-nr<<<"${matchingJVMs[*]}"))
  380.     unset IFS
  381.  
  382.  
  383.     # get the highest matching JVM
  384.     for ((i =0; i < ${#matchingJVMs[@]}; i++));
  385.     do
  386.         # split JVM string at ':' delimiter to retain spaces in $path substring
  387.         IFS=: arr=(${matchingJVMs[$i]}) ; unset IFS
  388.         # [0] comparable JVM version number
  389.         comp=${arr[0]}
  390.         # [1] JVM version number
  391.         ver=${arr[1]}
  392.         # [2] JVM path
  393.         path="${arr[2]}"
  394.  
  395.         # use current value as JAVACMD if it's executable
  396.         if [ -x "$path" ] ; then
  397.             JAVACMD="$path"
  398.             JAVACMD_version=$comp
  399.             break
  400.         fi
  401.     done
  402.     # unset for loop variables
  403.     unset arr comp ver path
  404. fi
  405.  
  406. # log the Java Command and the extracted version number
  407. stub_logger "[JavaCommand]'$JAVACMD'"
  408. stub_logger "[JavaVersion]$(get_java_version_from_cmd "${JAVACMD}")${JAVACMD_version:+/ $JAVACMD_version}"
  409.  
  410.  
  411.  
  412. if [ -z "${JAVACMD}" ] || [ ! -x "${JAVACMD}" ] ; then
  413.  
  414.     # different error messages when a specific JVM was required
  415.     if [ ! -z "${JVMVersion}" ] ; then
  416.         # display human readable java version (#28)
  417.         java_version_hr=$(echo ${JVMVersion} | sed -E 's/^1\.([0-9+*]+)$/ \1/g' | sed "s/+/ ${MSG_JAVA_VERSION_OR_LATER}/;s/*/ ${MSG_JAVA_VERSION_LATEST}/")
  418.         MSG_NO_SUITABLE_JAVA_EXPANDED=$(printf"${MSG_NO_SUITABLE_JAVA}""${java_version_hr}").
  419.  
  420.         if [ ! -z "${JVMMaxVersion}" ] ; then
  421.             java_version_hr=$(extract_java_major_version ${JVMVersion})
  422.             java_version_max_hr=$(echo ${JVMMaxVersion} | sed -E 's/^1\.([0-9+*]+)$/ \1/g' | sed "s/+//;s/*/ ${MSG_JAVA_VERSION_LATEST}/")
  423.             MSG_NO_SUITABLE_JAVA_EXPANDED="$(printf"${MSG_NO_SUITABLE_JAVA}""${java_version_hr}")$(printf"${MSG_JAVA_VERSION_MAX}""${java_version_max_hr}")"
  424.         fi
  425.  
  426.         # log exit cause
  427.         stub_logger "[EXIT 3]${MSG_NO_SUITABLE_JAVA_EXPANDED}"
  428.  
  429.         # display error message with AppleScript
  430.         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${DialogWithIcon}" \
  431.                 -e "set response to button returned of the result" \
  432.                 -e "if response is \"${MSG_VISIT_JAVA_DOT_COM}\" thenopen location \"https://www.java.com/download/\"" \
  433.                 -e "if response is \"${MSG_VISIT_ADOPTOPENJDK}\" thenopen location \"https://adoptopenjdk.net/releases.html\""
  434.         # exit with error
  435.         exit 3
  436.  
  437.     else
  438.         # log exit cause
  439.         stub_logger "[EXIT 1]${MSG_ERROR_LAUNCHING}"
  440.         # display error message with AppleScript
  441.         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${DialogWithIcon}" \
  442.                     -e "set response to button returned of the result" \
  443.                     -e "if response is \"${MSG_VISIT_JAVA_DOT_COM}\" thenopen location \"https://www.java.com/download/\"" \
  444.                     -e "if response is \"${MSG_VISIT_ADOPTOPENJDK}\" thenopen location \"https://adoptopenjdk.net/releases.html\""
  445.         # exit with error
  446.         exit 1
  447.     fi
  448. fi
  449.  
  450.  
  451.  
  452. # MainClass check
  453. ############################################
  454.  
  455. if [ -z "${JVMMainClass}" ]; then
  456.     # log exit cause
  457.     stub_logger "[EXIT 2]${MSG_MISSING_MAINCLASS}"
  458.     # display error message with AppleScript
  459.     osascript -e "tell application \"System Events\" to display dialog \"${MSG_ERROR_LAUNCHING}\n\n${MSG_MISSING_MAINCLASS}\" with title \"${CFBundleName}\" buttons {\" OK \"} default button 1${DialogWithIcon}"
  460.     # exit with error
  461.     exit 2
  462. fi
  463.  
  464.  
  465.  
  466. # execute $JAVACMD and do some preparation
  467. ############################################
  468.  
  469. # enable drag&drop to the dock icon
  470. export CFProcessPath="$0"
  471.  
  472. # remove Apples ProcessSerialNumber from passthru arguments (#39)
  473. if [[ "$*" == -psn* ]] ; then
  474.     ArgsPassthru=()
  475. else
  476.     ArgsPassthru=("$@")
  477. fi
  478.  
  479. # change to Working Directory based upon Apple/Oracle Plist info
  480. cd "${WorkingDirectory}" || exit 13
  481. stub_logger "[WorkingDirectory]${WorkingDirectory}"
  482.  
  483. # execute Java and set
  484. # - classpath
  485. # - splash image
  486. # - dock icon
  487. # - app name
  488. # - JVM options / properties (-D)
  489. # - JVM default options (-X)
  490. # - main class
  491. # - main class arguments
  492. # - passthrough arguments from Terminal or Drag'n'Drop to Finder icon
  493. stub_logger "[Exec]\"$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[@]}")}"
  494. exec "${JAVACMD}" \
  495.         -cp "${JVMClassPath}" \
  496.         -splash:"${ResourcesFolder}/${JVMSplashFile}" \
  497.         -Xdock:icon="${ResourcesFolder}/${CFBundleIconFile}" \
  498.         -Xdock:name="${CFBundleName}" \
  499.         ${JVMOptionsArr:+"${JVMOptionsArr[@]}" }\
  500.         ${JVMDefaultOptions:+$JVMDefaultOptions }\
  501.         "${JVMMainClass}"\
  502.         ${MainArgsArr:+ "${MainArgsArr[@]}"}\
  503.         ${ArgsPassthru:+ "${ArgsPassthru[@]}"}

2.3 关于使用

打开软件，选择自己要反编译的文件即可；
在这里插入图片描述
确认文件打开之后，我们就能看到反编译的源代码了；
在这里插入图片描述

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；

标签： macos java 策略模式
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。
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