Received an event that has a different character encoding than you configured

在使用logstash解析某log文件时，由于文件中出现了非正常编码的字符，导致启动logstash在解析到某条数据时会报错：

Received an event that has a different character encoding than you configured.

解决方案就是在input中添加如下配置：

codec => plain {charset=>"US-ASCII"}