golang统一错误处理
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1.为什么要统一错误处理
统一错误处理的目的是为了前端开发接收到后端的statuscode,之后便于前端逻辑上开发，以及开发。200代表成功，500失败，400代表找不到、禁止等异常
2.后端封装统一接口
/**
* 统一处理
* 错误码，response，返回内容，error
*/
func HandleResult(statusCode int, response *restful.Response, value interface, err error)
if err != nil
HandleAllStatus(parseValue(err, statusCode), response, err)
return
if statusCode == http.StatusOK
HandleSuccess(response, value)
return
// 解析其他错误
HandleAllStatus(parseValue(value, statusCode), response, value)
3.核心函数
func handle(statusCode int, response *restful.Response, req *restful.Request, err error)
_, fn, line, _ := runtime.Caller(2)
klog.Errorf("%s:%d %v", fn, line, err)
http.Error(response, sanitizer.Replace(err.Error()), statusCode)
打印错误日志，哪个文件函数多少行，以及错误原因
4.常见错误处理
func HandleInternalError(response *restful.Response, req *restful.Request, err error)
handle(http.StatusInternalServerError, response, req, err)
// HandleBadRequest writes http.StatusBadRequest and log error
func HandleBadRequest(response *restful.Response, req *restful.Request, err error)
handle(http.StatusBadRequest, response, req, err)
func HandleNotFound(response *restful.Response, req *restful.Request, err error)
handle(http.StatusNotFound, response, req, err)
func HandleForbidden(response *restful.Response, req *restful.Request, err error)
handle(http.StatusForbidden, response, req, err)
func HandleUnauthorized(response *restful.Response, req *restful.Request, err error)
handle(http.StatusUnauthorized, response, req, err)
func HandleTooManyRequests(response *restful.Response, req *restful.Request, err error)
handle(http.StatusTooManyRequests, response, req, err)
func HandleConflict(response *restful.Response, req *restful.Request, err error)
handle(http.StatusConflict, response, req, err)
5.共用错误处理
func HandleAllStatus(statusCode int, response *restful.Response, value interface)
if value == nil
response.WriteHeader(statusCode)
return
switch ee := value.(type)
case error:
handle(statusCode, response, nil, ee)
case string:
response.WriteHeader(statusCode)
response.WriteAsJson(value)
return
default:
response.WriteHeader(statusCode)
//处理是否为byte数组
b, ok := value.([]byte)
if ok
response.Write(b)
else
response.WriteEntity(value)
6.解析错误原因
func parseValue(value interface, statusCode int) int
if value == nil
return statusCode
obj := make(map[string]interface)
switch tValue := value.(type)
case error:
json.Unmarshal([]byte(tValue.Error()), &obj)
default:
b, ok :Golang✔️走进 Go 语言✔️ 第十九课 错误处理 & 时间处理