Liu Shuang

```go func (c *Context) HTML(code int, name string, data interface{}) { c.SetHeader("Content-Type", "text/html") c.Status(code) if err := c.engine.htmlTemplates.ExecuteTemplate(c.Writer, name, data); err != nil { c.Fail(500, err.Error()) } } ``` 这里前面c.Status(code)那里调用了response.WriteHeader，导致后面c.Fail再次调用response.WriteHeader无效