WriteJsonExit returns 4 more characters null.

[windf17]

Go version

go version go1.22.5 windows/amd64

GoFrame version

v2.7.0

Can this bug be reproduced with the latest release?

Option Yes

What did you do?

// 登录成功后返回token func PersonLoginAfter(r *ghttp.Request, respData gtoken.Resp) { if respData.Success() { r.Response.WriteJsonExit(g.Map{ "state": consts.SUCCESS, "message": "登录成功！", "data": respData.GetString(gtoken.KeyToken), // 登录成功后data中存放了token }) } else { r.Response.WriteJsonExit(g.Map{ "state": consts.ERROR, "message": "登录失败！", }) } }

为什么前端收到的json最后有4个字符null？？例如： res: {"data":"lUZ5V4m1yfFIniYE5PNpLKCUPdYG2qcBrcYijM4klsS6wZIKfs0Py/JZ0xRcga1w","message":"登录成功！","state":1}null

然后就因为null这4个字符，前端反序列化失败，然后要做字符串截取去掉这4个字符，再反序列化，真奇怪！

另外我有个后置中间件，代码如下： // HandleReturn 后置中间件：处理返回数据 func (s *middlewareService) HandleReturn(r *ghttp.Request) { r.Middleware.Next() err := r.GetError() if err != nil { r.Response.WriteJsonExit(g.Map{ "state": consts.ERROR, "message": err.Error(), }) } else { r.Response.WriteJsonExit(r.GetHandlerResponse()) } }会是这个出问题了？

What did you see happen?

现在前端收到的json数据是： {"data":"lUZ5V4m1yfFIniYE5PNpLKCUPdYG2qcBrcYijM4klsS6wZIKfs0Py/JZ0xRcga1w","message":"登录成功！","state":1}null

What did you expect to see?

我期待前端收到的json数据是： {"data":"lUZ5V4m1yfFIniYE5PNpLKCUPdYG2qcBrcYijM4klsS6wZIKfs0Py/JZ0xRcga1w","message":"登录成功！","state":1}