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arrays - XML中的结构数组没有包装节点？

问题描述

我有一个客户拥有 XML，他们似乎想要一个库存数组，但是每个项目一个接一个地列出，没有包装节点。

这是我正在做的一个示例，但每个项目都有一个包装节点。有没有办法让它们在“root”下一个接一个地列出？

测试代码：

package main

import (
    "encoding/xml"
    "fmt"
    "os"
    "strconv"
)

func main() {
    type InventoryItem struct {
        XMLName  xml.Name
        ItemName string `xml:"Name"`
        ItemDescription string `xml:"Description"`
    }

    type XMLEnvelop struct {
        XMLName   xml.Name        `xml:"root"`
        Inventory []InventoryItem `xml:"item"`
        Records   int             `xml:"records"`
    }

    var items []InventoryItem

    for i := 1; i < 6; i++ {
        items = append(items, InventoryItem{XMLName: xml.Name{Local: "item" + strconv.Itoa(i)}, ItemName: "Test " + strconv.Itoa(i), ItemDescription: "Description " + strconv.Itoa(i)})
    }

    v := &XMLEnvelop{Records: 1, Inventory: items}

    output, err := xml.MarshalIndent(v, "", "    ")
    if err != nil {
        fmt.Printf("error: %v\n", err)
    }

    // Write the output to check
    os.Stdout.Write(output)

    //Here is where I would make the request

}

测试输出：

<root>
    <item1>
        <Name>Test 1</Name>
        <Description>Description 1</Description>
    </item1>
    <item2>
        <Name>Test 2</Name>
        <Description>Description 2</Description>
    </item2>
    <item3>
        <Name>Test 3</Name>
        <Description>Description 3</Description>
    </item3>
    <item4>
        <Name>Test 4</Name>
        <Description>Description 4</Description>
    </item4>
    <item5>
        <Name>Test 5</Name>
        <Description>Description 5</Description>
    </item5>
    <records>1</records>
</root>

去游乐场： https: //play.golang.org/p/3DRUABFEQvC

这是他们似乎正在寻找的输出......无论出于何种原因。

<root>
    <Name>Test 1</Name>
    <Description>Description 1</Description>
    <Name>Test 2</Name>
    <Description>Description 2</Description>
    <Name>Test 3</Name>
    <Description>Description 3</Description>
    <Name>Test 4</Name>
    <Description>Description 4</Description>
    <Name>Test 5</Name>
    <Description>Description 5</Description>
    <records>1</records>
</root>

标签： arraysxmlgostruct

解决方案

您可以实现自定义封送拆收器。

type InventoryItem struct {
    XMLName         xml.Name
    ItemName        string `xml:"Name"`
    ItemDescription string `xml:"Description"`
}

func (i InventoryItem) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
    // Ignore the passed in `start` argument, it represents the
    // parent InventoryItem element of the Name and Description.

    // Declare types to represent the elements you want to encode,
    // initialize them to the item's field values and encode them.
    //
    // Use the ",chardata" option to tell the encoder to encode the
    // field's value directly rather than as a child element. 
    type Name struct {
        Value string `xml:",chardata"`
    }
    if err := e.Encode(Name{i.ItemName}); err != nil {
        return err
    }
    type Description struct {
        Value string `xml:",chardata"`
    }
    return e.Encode(Description{i.ItemDescription})
}

https://play.golang.org/p/D4ZVr2sWZju

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