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。

所有核心中间件都位于 middleware 包中：

import "github.com/labstack/echo/v5/middleware"

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

BodyDumpConfig · github.com/labstack/echo/v5@5196b9b

字段说明由英文源码注释生成。

包源码中的字段
字段	类型	说明	源码
`Skipper`	`Skipper`	Skipper defines a function to skip middleware.	L21
`Handler`	`BodyDumpHandler`	Handler receives request, response payloads and handler error if there are any. Required.	L25
`MaxRequestBytes`	`int64`	MaxRequestBytes limits how much of the request body to dump. If the request body exceeds this limit, only the first MaxRequestBytes are dumped. The handler callback receives truncated data. Default: 5 * MB (5,242,880 bytes) Set to -1 to disable limits (not recommended in production).	L32
`MaxResponseBytes`	`int64`	MaxResponseBytes limits how much of the response body to dump. If the response body exceeds this limit, only the first MaxResponseBytes are dumped. The handler callback receives truncated data. Default: 5 * MB (5,242,880 bytes) Set to -1 to disable limits (not recommended in production).	L39

包源码中的函数
类型	源码
`func BodyDump(handler BodyDumpHandler) echo.MiddlewareFunc`	L58
`func BodyDumpWithConfig(config BodyDumpConfig) echo.MiddlewareFunc`	L68

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,
}