golang 设置web请求状态码

package main

import (
	"net/http"
)

func main() {
	//路由处理绑定
	http.HandleFunc("/", Hander)
	//监听8080端口
	http.ListenAndServe(":8080", nil)
}
func Hander(w http.ResponseWriter, req *http.Request) {
	//设置 http请求状态
	w.WriteHeader(500)
	//写入页面数据
	w.Write([]byte("xiaochuan"))
}

你也可以用http 包里面的常量 我这边直接写数字方便理解而已

const (
	StatusContinue           = 100
	StatusSwitchingProtocols = 101

	StatusOK                   = 200
	StatusCreated              = 201
	StatusAccepted             = 202
	StatusNonAuthoritativeInfo = 203
	StatusNoContent            = 204
	StatusResetContent         = 205
	StatusPartialContent       = 206

	StatusMultipleChoices   = 300
	StatusMovedPermanently  = 301
	StatusFound             = 302
	StatusSeeOther          = 303
	StatusNotModified       = 304
	StatusUseProxy          = 305
	StatusTemporaryRedirect = 307

	StatusBadRequest                   = 400
	StatusUnauthorized                 = 401
	StatusPaymentRequired              = 402
	StatusForbidden                    = 403
	StatusNotFound                     = 404
	StatusMethodNotAllowed             = 405
	StatusNotAcceptable                = 406
	StatusProxyAuthRequired            = 407
	StatusRequestTimeout               = 408
	StatusConflict                     = 409
	StatusGone                         = 410
	StatusLengthRequired               = 411
	StatusPreconditionFailed           = 412
	StatusRequestEntityTooLarge        = 413
	StatusRequestURITooLong            = 414
	StatusUnsupportedMediaType         = 415
	StatusRequestedRangeNotSatisfiable = 416
	StatusExpectationFailed            = 417
	StatusTeapot                       = 418

	StatusInternalServerError     = 500
	StatusNotImplemented          = 501
	StatusBadGateway              = 502
	StatusServiceUnavailable      = 503
	StatusGatewayTimeout          = 504
	StatusHTTPVersionNotSupported = 505

	// New HTTP status codes from RFC 6585. Not exported yet in Go 1.1.
	// See discussion at https://codereview.appspot.com/7678043/
	statusPreconditionRequired          = 428
	statusTooManyRequests               = 429
	statusRequestHeaderFieldsTooLarge   = 431
	statusNetworkAuthenticationRequired = 511
)

下面修改一下就是这个样子

package main

import (
	"net/http"
)

func main() {
	//路由处理绑定
	http.HandleFunc("/", Hander)
	//监听8080端口
	http.ListenAndServe(":8080", nil)
}
func Hander(w http.ResponseWriter, req *http.Request) {
	//设置 http请求状态 为500
	w.WriteHeader(http.StatusInternalServerError)

	//写入页面数据
	w.Write([]byte("xiaochuan"))
}