dongshao4207 2017-09-08 14:11
浏览 54

同时使用xml.Name和[] xml.Attr时属性重复

When I use a struct like

type MyStruct struct {
    XMLName xml.Name
    Attrs []xml.Attrs `xml:",attr,any"`
}

The Namespace taken from the xmlns-attribute is both an attribute in Attrs and the value of XMLName.Space. That is unfortunate, because I'd expect, that Attrs only contains only attributes, that are not handled elsewhere

Even worse, when I marshal and unmarshal an XML I'd expect to get the same XML. Instead I get something, that looks broken. xmlns is doubled

package main

import (
    "encoding/xml"
    "fmt"
)


func main() {
    var Foo struct {
        XMLName xml.Name `xml:""`
        Attr []xml.Attr `xml:",attr,any"`
    } = struct {
        XMLName xml.Name `xml:""`
        Attr []xml.Attr `xml:",attr,any"`
    }{}

    str := `
<foo xmlns="bar"/>
    `

    fmt.Println(str)
    xml.Unmarshal([]byte(str), &Foo)
    b, _ := xml.Marshal(&Foo)
    fmt.Println(string(b))
}

https://play.golang.org/p/ulWy-Paha2

Results in

<foo xmlns="bar"/>

<foo xmlns="bar" xmlns="bar"></foo>

How can I avoid this? Is there's a way to tell the decoder to simply ignore certain attributes completely?

  • 写回答

0条回答 默认 最新

    报告相同问题?

    悬赏问题

    • ¥15 Oracle中如何从clob类型截取特定字符串后面的字符
    • ¥15 想通过pywinauto自动电机应用程序按钮,但是找不到应用程序按钮信息
    • ¥15 MATLAB中streamslice问题
    • ¥15 如何在炒股软件中,爬到我想看的日k线
    • ¥15 51单片机中C语言怎么做到下面类似的功能的函数(相关搜索:c语言)
    • ¥15 seatunnel 怎么配置Elasticsearch
    • ¥15 PSCAD安装问题 ERROR: Visual Studio 2013, 2015, 2017 or 2019 is not found in the system.
    • ¥15 (标签-MATLAB|关键词-多址)
    • ¥15 关于#MATLAB#的问题,如何解决?(相关搜索:信噪比,系统容量)
    • ¥500 52810做蓝牙接受端