在使用nginx記錄訪問日志時，發現在含有 request_body 的 PUT , POST 請求時，日志中會含有 x22 x9B x5C x09 x08 字符，不利於閱讀和處理。 具體 支持 request_body 的http method參見 http1.1定義 9 Method Definitions 和 Payloads of HTTP Request Methods nginx.conf 默認access_log 配置 log_format main '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"' '$http_host $upstream_status $upstream_addr $request_time $upstream_response_time'; 改成 log_format json_log escape=json '{"realip":"$remote_addr","@timestamp":"$time_iso8601","host":"$http_host","request":"$request","req_body":"$request_body","status":"$status","size":$body_bytes_sent,"ua":"$http_user_agent","cookie":"$http_cookie","req_time":"$request_time","uri":"$uri","referer":"$http_referer","xff":"$http_x_forwarded_for","ups_status":"$upstream_status","ups_addr":"$upstream_addr","ups_time":"$upstream_response_time"}'; 參考 How to generate a JSON log from nginx? 官方文檔ngx_http_log_module.html#log_format 注意， escape 是從 1.11.8 后新增的參數。 如果是老版本的，linux可以考慮使用 shell 命令替換， logstash 可以考慮使用 ruby 處理 ，參考 Optionally support handling of x escape codes 博客 https://anjia.ml/2017/06/21/nginx-logging-request-body-as-hexidecimal/ 簡書 http://www.jianshu.com/p/8409f28f32e9 掘金 https://juejin.im/post/5949e0f7128fe1006a627cc0