在 Golang 中将 xml 转换为 json
Converting xml to json in Golang
我正在使用 github.com/basgys/goxml2json 进行 xml 到 json 的转换。下面是示例代码:
package main
import (
"fmt"
"strings"
xj "github.com/basgys/goxml2json"
)
func main() {
xml := strings.NewReader(`<?xml version="1.0" encoding="UTF-8"?>
<osm version="0.6" generator="CGImap 0.0.2">
<bounds minlat="54.0889580" minlon="12.2487570" maxlat="54.0913900" maxlon="12.2524800"/>
<foo>bar</foo>
</osm>`)
json, err := xj.Convert(xml)
if err != nil {
panic("ERROR converting xml to json")
}
fmt.Println(json.String())
}
以上代码的输出为:
{
"osm": {
"-version": 0.6,
"-generator": "CGImap 0.0.2",
"bounds": {
"-minlat": "54.0889580",
"-minlon": "12.2487570",
"-maxlat": "54.0913900",
"-maxlon": "12.2524800"
},
"foo": "bar"
}
}
但是,我期望 https://codebeautify.org/xmltojson/y2221f265 给出的输出如下所示:
{
"osm": {
"bounds": "",
"foo": "bar"
}
}
如何从 JSON 输出中删除以 -
开头的键?我事先不知道数据的结构。
试试这个
package main
import (
"encoding/json"
"fmt"
"strings"
xj "github.com/basgys/goxml2json"
)
// ToObject - convert string to any given struct
func ToObject(value string, object interface{}) error {
err := json.Unmarshal([]byte(value), &object)
if err != nil {
return err
}
return nil
}
func main() {
xml := strings.NewReader(`<?xml version="1.0" encoding="UTF-8"?>
<osm version="0.6" generator="CGImap 0.0.2">
<bounds minlat="54.0889580" minlon="12.2487570" maxlat="54.0913900" maxlon="12.2524800"/>
<foo>bar</foo>
</osm>`)
converter, err := xj.Convert(xml)
if err != nil {
panic("ERROR converting xml to json")
}
osmStruct := &ExampleStruct{}
ToObject(converter.String(), &osmStruct)
b, _ := json.Marshal(osmStruct)
fmt.Println(string(b))
}
// ExampleStruct -
type ExampleStruct struct {
Osm Osm `json:"osm"`
}
// Osm -
type Osm struct {
Version string `json:",omitempty"`
Generator string `json:",omitempty"`
Bounds Bounds `json:"bounds"`
Foo string `json:"foo"`
}
// Bounds -
type Bounds struct {
Minlat string `json:",omitempty"`
Minlon string `json:",omitempty"`
Maxlat string `json:",omitempty"`
Maxlon string `json:",omitempty"`
}
我认为应该这样做。它是 goxml2json.Convert
函数的修改版本。使用 WithAttrPrefix
指定自定义前缀(如果您想在正文开头使用 - )。
请注意,这仅适用于 master 分支上的最新提交,v1.1.0
标签不支持插件,因此您必须像这样获取它:go get github.com/basgys/goxml2json@master
RemoveAttr
只是递归地删除所有具有给定前缀的 children。此时您还可以进行其他修改。
package main
import (
"bytes"
"fmt"
"strings"
xj "github.com/basgys/goxml2json"
)
const prefix = "veryuniqueattrprefix-"
func main() {
xml := strings.NewReader(`<?xml version="1.0" encoding="UTF-8"?>
<osm version="0.6" generator="CGImap 0.0.2">
<bounds minlat="54.0889580" minlon="12.2487570" maxlat="54.0913900" maxlon="12.2524800"/>
<foo>bar</foo>
</osm>`)
// Decode XML document
root := &xj.Node{}
err := xj.NewDecoder(
xml,
xj.WithAttrPrefix(prefix),
).Decode(root)
if err != nil {
panic(err)
}
RemoveAttr(root)
// Then encode it in JSON
buf := new(bytes.Buffer)
e := xj.NewEncoder(buf)
err = e.Encode(root)
if err != nil {
panic(err)
}
fmt.Println(buf.String())
}
func RemoveAttr(n *xj.Node) {
for k, v := range n.Children {
if strings.HasPrefix(k, prefix) {
delete(n.Children, k)
} else {
for _, n := range v {
RemoveAttr(n)
}
}
}
}
输出:
{"osm": {"bounds": "", "foo": "bar"}}
我正在使用 github.com/basgys/goxml2json 进行 xml 到 json 的转换。下面是示例代码:
package main
import (
"fmt"
"strings"
xj "github.com/basgys/goxml2json"
)
func main() {
xml := strings.NewReader(`<?xml version="1.0" encoding="UTF-8"?>
<osm version="0.6" generator="CGImap 0.0.2">
<bounds minlat="54.0889580" minlon="12.2487570" maxlat="54.0913900" maxlon="12.2524800"/>
<foo>bar</foo>
</osm>`)
json, err := xj.Convert(xml)
if err != nil {
panic("ERROR converting xml to json")
}
fmt.Println(json.String())
}
以上代码的输出为:
{
"osm": {
"-version": 0.6,
"-generator": "CGImap 0.0.2",
"bounds": {
"-minlat": "54.0889580",
"-minlon": "12.2487570",
"-maxlat": "54.0913900",
"-maxlon": "12.2524800"
},
"foo": "bar"
}
}
但是,我期望 https://codebeautify.org/xmltojson/y2221f265 给出的输出如下所示:
{
"osm": {
"bounds": "",
"foo": "bar"
}
}
如何从 JSON 输出中删除以 -
开头的键?我事先不知道数据的结构。
试试这个
package main
import (
"encoding/json"
"fmt"
"strings"
xj "github.com/basgys/goxml2json"
)
// ToObject - convert string to any given struct
func ToObject(value string, object interface{}) error {
err := json.Unmarshal([]byte(value), &object)
if err != nil {
return err
}
return nil
}
func main() {
xml := strings.NewReader(`<?xml version="1.0" encoding="UTF-8"?>
<osm version="0.6" generator="CGImap 0.0.2">
<bounds minlat="54.0889580" minlon="12.2487570" maxlat="54.0913900" maxlon="12.2524800"/>
<foo>bar</foo>
</osm>`)
converter, err := xj.Convert(xml)
if err != nil {
panic("ERROR converting xml to json")
}
osmStruct := &ExampleStruct{}
ToObject(converter.String(), &osmStruct)
b, _ := json.Marshal(osmStruct)
fmt.Println(string(b))
}
// ExampleStruct -
type ExampleStruct struct {
Osm Osm `json:"osm"`
}
// Osm -
type Osm struct {
Version string `json:",omitempty"`
Generator string `json:",omitempty"`
Bounds Bounds `json:"bounds"`
Foo string `json:"foo"`
}
// Bounds -
type Bounds struct {
Minlat string `json:",omitempty"`
Minlon string `json:",omitempty"`
Maxlat string `json:",omitempty"`
Maxlon string `json:",omitempty"`
}
我认为应该这样做。它是 goxml2json.Convert
函数的修改版本。使用 WithAttrPrefix
指定自定义前缀(如果您想在正文开头使用 - )。
请注意,这仅适用于 master 分支上的最新提交,v1.1.0
标签不支持插件,因此您必须像这样获取它:go get github.com/basgys/goxml2json@master
RemoveAttr
只是递归地删除所有具有给定前缀的 children。此时您还可以进行其他修改。
package main
import (
"bytes"
"fmt"
"strings"
xj "github.com/basgys/goxml2json"
)
const prefix = "veryuniqueattrprefix-"
func main() {
xml := strings.NewReader(`<?xml version="1.0" encoding="UTF-8"?>
<osm version="0.6" generator="CGImap 0.0.2">
<bounds minlat="54.0889580" minlon="12.2487570" maxlat="54.0913900" maxlon="12.2524800"/>
<foo>bar</foo>
</osm>`)
// Decode XML document
root := &xj.Node{}
err := xj.NewDecoder(
xml,
xj.WithAttrPrefix(prefix),
).Decode(root)
if err != nil {
panic(err)
}
RemoveAttr(root)
// Then encode it in JSON
buf := new(bytes.Buffer)
e := xj.NewEncoder(buf)
err = e.Encode(root)
if err != nil {
panic(err)
}
fmt.Println(buf.String())
}
func RemoveAttr(n *xj.Node) {
for k, v := range n.Children {
if strings.HasPrefix(k, prefix) {
delete(n.Children, k)
} else {
for _, n := range v {
RemoveAttr(n)
}
}
}
}
输出:
{"osm": {"bounds": "", "foo": "bar"}}