dtny30176 2016-05-09 20:32
浏览 277
已采纳

go不能在模板Execute的参数中将输出(字符串类型)用作io.Writer类型

It's easy to execute template ('tmplhtml' in my case) in 'go' to os.Stdout but how to write it to a string 'output' so I can later i.e. send html in mail using "gopkg.in/gomail.v2" ?

var output string
    t := template.Must(template.New("html table").Parse(tmplhtml))
    err = t.Execute(output, Files)
m.SetBody("text/html", output) //"gopkg.in/gomail.v2"

Build error reads 'cannot use output (type string) as type io.Writer in argument to t.Execute: string does not implement io.Writer (missing Write method)' I can implement Writer method but it is supposed to return integer Write(p []byte) (n int, err error)

  • 写回答

1条回答 默认 最新

  • dtv7174 2016-05-09 20:36
    关注

    You need to write to a buffer as follows as this implements the interface io.Writer. Its basically missing a Write method, which you could build your own, but a buffer is more straight forward:

    buf := new(bytes.Buffer)
    t := template.Must(template.New("html table").Parse(tmplhtml))
    err = t.Execute(buf, Files)
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

报告相同问题?

悬赏问题

  • ¥15 这个电路是如何实现路灯控制器的,原理是什么,怎么求解灯亮起后熄灭的时间如图?
  • ¥15 matlab数字图像处理频率域滤波
  • ¥15 在abaqus做了二维正交切削模型,给刀具添加了超声振动条件后输出切削力为什么比普通切削增大这么多
  • ¥15 ELGamal和paillier计算效率谁快?
  • ¥15 file converter 转换格式失败 报错 Error marking filters as finished,如何解决?
  • ¥15 Arcgis相交分析无法绘制一个或多个图形
  • ¥15 关于#r语言#的问题:差异分析前数据准备,报错Error in data[, sampleName1] : subscript out of bounds请问怎么解决呀以下是全部代码:
  • ¥15 seatunnel-web使用SQL组件时候后台报错,无法找到表格
  • ¥15 fpga自动售货机数码管(相关搜索:数字时钟)
  • ¥15 用前端向数据库插入数据,通过debug发现数据能走到后端,但是放行之后就会提示错误