Jmeter："An error occurred: Can't connect to X11 window server using 'lacalhost:12.0' as the value of the display variable." 解决办法

做各种不同项目的性能测试，都需要在项目本地压测服务器配置jmeter，需要时还要调出jmeter图形化界面来调试jmeter脚本。

标题中的问题遇过多次，这次做个记录。

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1. 启动jmeter报错

　　在配置好jmeter环境变量的linux系统执行jmeter命令，报错如下：

[root@localhost ~]# jmeter
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =  = =
Don't use GUI mode for load testing !, only for Test creation and Test debugging. 
For load testing, use CLI Mode (was NON GUI):
    jmeter -n -t [jmx file] -l [results file] -e -a [Path to web report falder]
& increase Java Heap to meet your test requirements:
    Modify current env variable HEAP="-Xms1g -Xmx1g -XX:MaxMetaspaceSize=256m" in the jmeter batch file 
Check:https://jmeter.apache.org/usermanual/best-practices.html
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 
An error occurred: Can't connect to X11 window server using 'lacalhost:12.0' as the value of the display variable.

2. 解决问题

2.1 设置DISPLAY变量

[root@localhost ~]# export DISPLAY=:0.0

2.2 安装xhost 

[root@localhost ~]# yum -y install xhost 

　　执行xhost+

[root@localhost ~]# xhost +

3. 启动jmeter

　　至此，问题解决。执行jmeter命令启动图形化界面。

[root@localhost ~]# jmeter
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
Don't use GUI mode for load testing !, only for Test creation and Test debugging. 
For load testing, use CLI Mode (was NON GUI):
    jmeter -n -t [jmx file] -l [results file] -e -o [Path to web report folder]
& increase Java Heap to meet your test requirements:
    Modify current env variable HEAP="-Xms1g -Xmx1g -XX:MaxMetaspaceSize=256m" in the jmeter batch file 
Check :https://jmeter.apache.org/usermanual/best-practices.html
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
Jun 12, 2023 10:59:54 AM com.kitfox.svg.Text buildText
WARNING: Could not create font Arial
Jun 12, 2023 10:59:54 AM com.kitfox.svg.Text buildText
WARNING: Could not create font Arial
Jun 12, 2023 10:59:54 AM com.kitfox.svg.Text buildText
WARNING: Could not create font Arial
Jun 12, 2023 10:59:54 AM com.kitfox.svg.Text buildText
WARNING: Could not create font Arial
Jun 12, 2023 10:59:54 AM com.kitfox.svg.Text buildText
WARNING: Could not create font Arial

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类似问题。可参考：https://www.cnblogs.com/silgen/p/16668902.html