duanjue2576 2011-12-22 21:13
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如何获得模板渲染的结果

I'm quite new in golang.

Here is my problem: I want to get the string result of a template.Execute, and I don't want to execute it directly to a http.ResponsWriter

Here is my code and it does not seem to work well

package main

import (
    "fmt"
    "os"
    "template"
)

type ByteSlice []byte

func (p *ByteSlice) Write(data []byte) (lenght int, err os.Error) {
    *p = data
    return len(data), nil
}

func main() {
    page := map[string]string{"Title": "Test Text"}
    tpl, _ := template.ParseFile("test.html")
    var b ByteSlice
    tpl.Execute(&b, &page)
    fmt.Printf(`"html":%s`, b)
}

And the text.html:

<html>
<body>
    <h1>{{.Title|html}}</h1>
</body>
</html>

But what I got is

"html":</h1>
</body>
</html>
  • 写回答

1条回答 默认 最新

  • dongzhuo1930 2011-12-22 22:32
    关注

    ByteSlice's Write method is buggy. It should append the new data to what's already been written, but your version replaces the already written data. It's likely that the template code calls Write more than once, so you only end up printing the last thing that was written.

    Instead of creating ByteSlice, use bytes.Buffer.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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