SSL error when connecting to the Jack server. Try ‘jack-diagnose’
Linux编译APP时报如下错误：
FAILED: setup-jack-server
/bin/bash -c “(prebuilts/sdk/tools/jack-admin install-server prebuilts/sdk/tools/jack-launcher.jar prebuilts/sdk/tools/jack-server-4.11.ALPHA.jar 2>&1 || (exit 0) ) && (JACK_SERVER_VM_ARGUMENTS="-Dfile.encoding=UTF-8 -XX:+TieredCompilation" prebuilts/sdk/tools/jack-admin start-server 2>&1 || exit 0 ) && (prebuilts/sdk/tools/jack-admin update server prebuilts/sdk/tools/jack-server-4.11.ALPHA.jar 4.11.ALPHA 2>&1 || exit 0 ) && (prebuilts/sdk/tools/jack-admin update jack prebuilts/sdk/tools/jacks/jack-4.32.CANDIDATE.jar 4.32.CANDIDATE || exit 47 )”
Jack server already installed in “/home/xxx/.jack-server”
Launching Jack server java -XX:MaxJavaStackTraceDepth=-1 -Djava.io.tmpdir=/tmp -Dfile.encoding=UTF-8 -XX:+TieredCompilation -cp /home/xxx/.jack-server/launcher.jar com.android.jack.launcher.ServerLauncher
Jack server failed to (re)start, try ‘jack-diagnose’ or see Jack server log
SSL error when connecting to the Jack server. Try ‘jack-diagnose’
SSL error when connecting to the Jack server. Try ‘jack-diagnose’
ninja: build stopped: subcommand failed.
19:29:44 ninja failed with: exit status 1
failed to build some targets (11:13 (mm:ss))
如下图：
分析错误可知，有以下错误：
FAILED: setup-jack-server
Jack server failed to (re)start, try ‘jack-diagnose’ or see Jack server log
SSL error when connecting to the Jack server. Try ‘jack-diagnose’
根据提示运行jack-diagnose，输出如下信息：
Port 8077 is used by another process (pid=), please ensure to free the port or change port configuration in ‘/home/xxx/.jack-settings’ and ‘/home/xxx/.jack-server/config.properties’
error: process ID list syntax error
发现是端口被占用了。需要修改.jack-settings和config.properties。这两个文件位置如下：
/home/用户名/.jack-settings
/home/用户名/.jack-server/config.properties
修改步骤如下：
1、将 .jack-settings 文件里的端口号改为：
SERVER_PORT_SERVICE=8386
SERVER_PORT_ADMIN=8387
2、将 config.properties 文件里的端口号改为：
jack.server.service.port=8386
jack.server.admin.port=8387
3、然后在项目根目录下运行终端命令：cd /LINUX/android/prebuilts/sdk/tools
4、然后分别执行终端命令 ./jack-admin kill-server 和 ./jack-admin start-server 启动Jack server
5、最后重新编译。
到第5步，一般会成功。如果失败，继续查看第6步。
6、修改 java.security 文件。java.security 位置如下图：
其属性信息如下：
7、在上述位置打开终端命令窗口，运行 sudo chmod 777 java.security 命令改变文件的权限。否则我们的修改不会起作用。当然，也可以直接运行 cd /etc/java-8-openjdk/security 命令到上述位置。
8、然后执行 sudo vim java.security 命令打开 java.security 文件，出现如下界面：
找到如上所示的文件位置，按 i 键进行修改，大概在704行，删除掉 TLSv1, TLSv1.1 ，然后按 esc键，切换模式，再按 wq 键保存并退出。最后重复上述步骤 3、4、5 即可。如果还是编译失败，可以查看文章Linux编译APP时报FAILED: setup-jack-server
