jmeter执行报错：does not contain the field names header, ensure the jmeter.save.saveservice.* properties

执行jmeter命令报错

检查：
1.报错信息

D:\apache-jmeter-5.5\apache-jmeter-5.5\bin>jmeter -n -t \apache-jmeter-5.5\apache-jmeter-5.5\bin\opt\HTTPRequest1.jmx -l \apache-jmeter-5.5\apache-jmeter-5.5\bin\opt\123.csv -e -o \apache-jmeter-5.5\apache-jmeter-5.5\bin\opt\R
Creating summariser <summary>
Created the tree successfully using \apache-jmeter-5.5\apache-jmeter-5.5\bin\opt\HTTPRequest1.jmx
Starting standalone test @ October 24, 2022 4:47:51 PM CST (1666601271824)
Waiting for possible Shutdown/StopTestNow/HeapDump/ThreadDump message on port 4445
summary =     40 in 00:00:03 =   11.5/s Avg:  1030 Min:   283 Max:  1797 Err:     0 (0.00%)
Tidying up ...    @ October 24, 2022 4:47:55 PM CST (1666601275894)
File 'D:\apache-jmeter-5.5\apache-jmeter-5.5\bin\opt\123.csv' does not contain the field names header, ensure the jmeter.save.saveservice.* properties are the same as when the CSV file was created or the file may be read incorrectly when generating report
... end of run

解决考虑有三个方面：

1.jmeter配置文件有问题

把jmeter.properties配置文件中的jmeter.save.saveservice.output_format改为=csv，保存，重新执行命令

2.生成的 jtl 文件非 csv 格式

与第一个解决方法对应，若配置文件设置csv，但生产的文件不是csv格式，这是也会报错

3.命令中的生成的文件必须是不存在的

当文件已经建好时，执行命令会报错。

上述解决方法都试一下，我现在已经是解决了，如果没有解决，那就再搜一下别人的优解 ^^…^