Cannot find Java 1.5 or higher

问题：
F:\logstash-5.6.8\logstash-5.6.8\bin>Cannot find Java 1.5 or higher.
‘Cannot’ 不是内部或外部命令，也不是可运行的程序
或批处理文件。

分析：
使用logstash时，出现以上问题，百度没有找到解决方案，想到之前使用tomcat时也出现类似情况；

方法:
**解决方案：在logstash/bin中以文本模式打开 logstash.bat 在最上方添加
SET JAVA_HOME=D:\java\jdk8（你的java_home路径)
得到结果：
F:\logstash-5.6.8\logstash-5.6.8\bin>logstash -e ‘input { stdin { } } output { stdout {} }’

解决：
F:\logstash-5.6.8\logstash-5.6.8\bin>SET JAVA_HOME=C:\Program Files\Java\jdk1.8.0_181
Sending Logstash’s logs to F:/logstash-5.6.8/logstash-5.6.8/logs which is now configured via log4j2.properties
[2019-10-08T23:09:35,183][INFO ][logstash.modules.scaffold] Initializing module {:module_name=>“fb_apache”, :directory=>“F:/logstash-5.6.8/logstash-5.6.8/modules/fb_apache/configuration”}
[2019-10-08T23:09:35,209][INFO ][logstash.modules.scaffold] Initializing module {:module_name=>“netflow”, :directory=>“F:/logstash-5.6.8/logstash-5.6.8/modules/netflow/configuration”}
[2019-10-08T23:09:35,240][INFO ][logstash.setting.writabledirectory] Creating directory {:setting=>“path.queue”, :path=>“F:/logstash-5.6.8/logstash-5.6.8/data/queue”}
[2019-10-08T23:09:35,242][INFO ][logstash.setting.writabledirectory] Creating directory {:setting=>“path.dead_letter_queue”, :path=>“F:/logstash-5.6.8/logstash-5.6.8/data/dead_letter_queue”}
[2019-10-08T23:09:35,364][INFO ][logstash.agent ] No persistent UUID file found. Generating new UUID {:uuid=>“853788f1-51ab-4f51-bddb-b5bdef3cb3a3”, :path=>“F:/logstash-5.6.8/logstash-5.6.8/data/uuid”}
[2019-10-08T23:09:35,976][INFO ][logstash.pipeline ] Starting pipeline {“id”=>“main”, “pipeline.workers”=>8, “pipeline.batch.size”=>125, “pipeline.batch.delay”=>5, “pipeline.max_inflight”=>1000}
[2019-10-08T23:09:36,105][INFO ][logstash.pipeline ] Pipeline main started
The stdin plugin is now waiting for input:
[2019-10-08T23:09:36,379][INFO ][logstash.agent ] Successfully started Logstash API endpoint {:port=>9600}
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2019-10-08T15:10:28.819Z DESKTOP-EPJO2NQ aaaaa
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2019-10-08T15:10:36.609Z DESKTOP-EPJO2NQ bbbbb