解决 MacOS BigSur JD-GUI 打开失败的问题_error launching 'jd-gui' no suitable java version -优快云博客

前言
JD-GUI是一款轻量级的 Java 反编译工具，对于一些没有源码的 Jar 包，直接拖进去就可以反编译源码，十分的方便。

在 MacOS 还是 Mojave 的时候，JD-GUI(下载地址)使用一切正常。

(apkTool下载地址 https://bitbucket.org/iBotPeaches/apktool/downloads/?tab=downloads ）

（jd-gui git 代码下载地址: GitHub - renhaijun/jd-gui: A standalone Java Decompiler GUI )

当系统升级到 BigSur 和 Monterey 的时候，打开 JD-GUI 就会提示找不到 JDK 环境。（即使你的电脑已经存在 JDK 环境并且配置了环境变量，依然会提示找不到 JDK 环境）

大致错误提示如下：

ERROR launching 'JD-GUI'

No suitable Java version found on your system!
This program requires Java 1.8+
Make sure you install the required Java version.

我们需要替换 JD-GUI 程序文件里一个脚本文件，参考步骤如下：

先将下载下来的 jd-gui-osx-1.6.6.tar 解压，然后将 JD-GUI.app 文件拷贝到 Applications 目录下(下载地址： https://github.com/java-decompiler/jd-gui/releases/download/v1.6.6/jd-gui-osx-1.6.6.tar )
右击 JD-GUI.app 点击显示包内容
显示包内容

Java Decompiler

3、将 Contents/MacOS/universalJavaApplicationStub.sh 文件的内容替换为 https://github.com/tofi86/universalJavaApplicationStub/blob/v3.2.0/src/universalJavaApplicationStub 中的内容（或者从下面复制出来），保存。

注意：确保本地已存在 Java 环境

此时，再次打开 JD-GUI.app，则可以正常运行了。

universalJavaApplicationStub.sh文件内容

#!/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      2021-02-21                                                          #
# @version   3.2.0                                                               #
#                                                                                #
##################################################################################
#                                                                                #
# The MIT License (MIT)                                                          #
#                                                                                #
# Copyright (c) 2014-2021 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
################################################################################
function stub_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=$0
while [ -h "$PRG" ]; do
	ls=$(ls -ld "$PRG")
	link=$(expr "$ls" : '^.*-> \(.*\)$' 2>/dev/null)
	if expr "$link" : '^/' 2> /dev/null >/dev/null; then
		PRG="$link"
	else
		PRG="$(dirname "$PRG")/$link"
	fi
done
PROGDIR=$(dirname "$PRG")
stub_logger "[StubDir] $PROGDIR"



# set files and folders
############################################

# the absolute path of the app package
cd "$PROGDIR"/../../ || exit 11
AppPackageFolder=$(pwd)

# the base path of the app package
cd .. || exit 12
AppPackageRoot=$(pwd)

# set Apple's Java folder
AppleJavaFolder="${AppPackageFolder}"/Contents/Resources/Java

# set Apple's Resources folder
AppleResourcesFolder="${AppPackageFolder}"/Contents/Resources

# set Oracle's Java folder
OracleJavaFolder="${AppPackageFolder}"/Contents/Java

# set Oracle's Resources folder
OracleResourcesFolder="${AppPackageFolder}"/Contents/Resources

# set path to Info.plist in bundle
InfoPlistFile="${AppPackageFolder}"/Contents/Info.plist

# set the default JVM Version to a null string
JVMVersion=""
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
###############################################################