如何在MacOSX中为JRE 7安装无限强度的JCE？

macos java jce

2022-09-01 03:37:50

我为MacOSX安装了Oracle JRE 7（不是JDK），但我找不到JCE管辖权文件的位置。

我需要用无限强度版本替换它们。

答案 1

我已经安装了Oracle JDK，如果它有帮助，那么在我的情况下，目录是。您的里程可能会有所不同，在这种情况下，只需跑步并查看结果。/Library/Java/JavaVirtualMachines/jdk1.7.0_09.jdk/Contents/Home/jre/lib/security/find . -name local_policy.jar

答案 2

这是针对JDK的，而不是JRE的。

我在Mac，OSx Lion上，我使用/usr/libexec/java_home来找到我的java家

/usr/libexec/java_home -V
# Matching Java Virtual Machines (3):
#     1.7.0_51, x86_64: "Java SE 7" /Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home
#     1.6.0_65-b14-462, x86_64: "Java SE 6" /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
#     1.6.0_65-b14-462, i386:   "Java SE 6" /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
# 
# /Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home

/usr/libexec/java_home
# /Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home

/usr/libexec/java_home -v 1.6
# /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home

/usr/libexec/java_home -v 1.7
# /Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home

从这里您可以使用此可执行文件并找到这些文件

find $(/usr/libexec/java_home -v 1.7) -name local_policy.jar
# /Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/security/local_policy.jar

find $(/usr/libexec/java_home -v 1.7) -name US_export_policy.jar
# /Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/security/US_export_policy.jar

并将其与@ngreen的答案相结合，以获取这些文件的md5（如果需要）

find ~/Downloads/UnlimitedJCEPolicy -name *.jar |xargs md5
# MD5 (/Users/nperry/Downloads/UnlimitedJCEPolicy/local_policy.jar) = 9dd69bcc7637d872121880c35437788d
# MD5 (/Users/nperry/Downloads/UnlimitedJCEPolicy/US_export_policy.jar) = 3bb2e88a915b3cb003ca185357a92c16

find $(/usr/libexec/java_home -v 1.7) -name local_policy.jar | xargs md5
# MD5 (/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/security/local_policy.jar) = f41ab8f64b1fa13fec7276579c420951

find $(/usr/libexec/java_home -v 1.7) -name US_export_policy.jar | xargs md5
# MD5 (/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/security/US_export_policy.jar) = d5d126ae15abecb7d6e3a28b0d57543e

你可以看到我还没有替换这些文件。

如果需要，请备份原始文件

mkdir ~/Downloads/JCEPolicy-originals-1.7/
cp $(find $(/usr/libexec/java_home -v 1.7) -name local_policy.jar)     ~/Downloads/JCEPolicy-originals-1.7/
cp $(find $(/usr/libexec/java_home -v 1.7) -name US_export_policy.jar) ~/Downloads/JCEPolicy-originals-1.7/

您可以将文件替换为此文件。

sudo cp ~/Downloads/UnlimitedJCEPolicy/local_policy.jar $(find $(/usr/libexec/java_home -v 1.7) -name local_policy.jar)
sudo cp ~/Downloads/UnlimitedJCEPolicy/US_export_policy.jar $(find $(/usr/libexec/java_home -v 1.7) -name US_export_policy.jar)

获得MD5s告诉我它是否有效

find $(/usr/libexec/java_home -v 1.7) -name local_policy.jar | xargs md5
# MD5 (/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/security/local_policy.jar) = 9dd69bcc7637d872121880c35437788d

find $(/usr/libexec/java_home -v 1.7) -name US_export_policy.jar | xargs md5
# MD5 (/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/security/US_export_policy.jar) = 3bb2e88a915b3cb003ca185357a92c16