请求体转储

Body Dump 中间件会捕获请求和响应负载，并传给已注册的处理函数。它通常用于调试或日志记录。

用法

e := echo.New()
e.Use(middleware.BodyDump(func(c *echo.Context, reqBody, resBody []byte, err error) {
  // Handle the request and response bodies.
}))

自定义配置

e := echo.New()
e.Use(middleware.BodyDumpWithConfig(middleware.BodyDumpConfig{}))

配置

type BodyDumpConfig struct {
  // Skipper defines a function to skip middleware.
  Skipper Skipper

  // Handler receives the request and response payloads and the handler error, if any.
  // Required.
  Handler BodyDumpHandler

  // MaxRequestBytes limits how much of the request body to dump. If the request body
  // exceeds this limit, only the first MaxRequestBytes are dumped and the handler
  // receives truncated data.
  // Default: 5 * MB (5,242,880 bytes). Set to -1 to disable limits (not recommended).
  MaxRequestBytes int64

  // MaxResponseBytes limits how much of the response body to dump. If the response body
  // exceeds this limit, only the first MaxResponseBytes are dumped and the handler
  // receives truncated data.
  // Default: 5 * MB (5,242,880 bytes). Set to -1 to disable limits (not recommended).
  MaxResponseBytes int64
}

Handler 的签名为：

type BodyDumpHandler func(c *echo.Context, reqBody []byte, resBody []byte, err error)

默认配置

// Effective defaults applied when fields are left unset (Handler is required).
BodyDumpConfig{
  Skipper:          DefaultSkipper,
  MaxRequestBytes:  5 * MB,
  MaxResponseBytes: 5 * MB,
}