gin
gin获取响应体内容
参考: 如何在gin中获取响应体内容?
1. 定义一个新的CustomResponseWriter,通过组合方式持有一个gin.ResponseWriter和response body缓存
type CustomResponseWriter struct {
gin.ResponseWriter
body *bytes.Buffer
}
func (w CustomResponseWriter) Write(b []byte) (int, error) {
w.body.Write(b)
return w.ResponseWriter.Write(b)
}
func (w CustomResponseWriter) WriteString(s string) (int, error) {
w.body.WriteString(s)
return w.ResponseWriter.WriteString(s)
}
2. 然后在中间件中进行替换和使用
func AccessLogHandler() gin.HandlerFunc {
return func(c *gin.Context) {
blw := &CustomResponseWriter{body: bytes.NewBufferString(""), ResponseWriter: c.Writer}
c.Writer = blw
c.Next()
fmt.Sprintf("url=%s, status=%d, resp=%s", c.Request.URL, c.Writer.Status(), blw.body.String())
}
}
3. 使用中间件
//初始化中间件
func InitMiddleware(r *gin.Engine) {
// 生成请求唯一id
r.Use(setUUIDContext())
//access log
r.Use(AccessLogHandler())
// 跨域请求处理
r.Use(Cors())
// 异常保护
r.Use(Recover)
}