gjson

package
v2.8.0 Latest Latest
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 Go to latest Published: Nov 17, 2024 License: MIT Imports: 22 Imported by: 375

Documentation

Overview

Package gjson provides convenient API for JSON/XML/INI/YAML/TOML data handling.

Index

Examples

Constants

This section is empty.

Variables

This section is empty.

Functions

func Decode 

func Decode(data interface{}, options ...Options) (interface{}, error)

Decode decodes json format `data` to golang variable. The parameter `data` can be either bytes or string type.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	jsonContent := `{"name":"john","score":100}`
	info, _ := gjson.Decode([]byte(jsonContent))
	fmt.Println(info)

}

Output:

map[name:john score:100]

func DecodeTo 

func DecodeTo(data interface{}, v interface{}, options ...Options) (err error)

DecodeTo decodes json format `data` to specified golang variable `v`. The parameter `data` can be either bytes or string type. The parameter `v` should be a pointer type.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name  string
		Score int
	}

	var info BaseInfo

	jsonContent := "{\"name\":\"john\",\"score\":100}"
	gjson.DecodeTo([]byte(jsonContent), &info)
	fmt.Printf("%+v", info)

}

Output:

{Name:john Score:100}

func Encode 

func Encode(value interface{}) ([]byte, error)

Encode encodes any golang variable `value` to JSON bytes.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	infoData, _ := gjson.Encode(info)
	fmt.Println(string(infoData))

}

Output:

{"Name":"John","Age":18}

func EncodeString 

func EncodeString(value interface{}) (string, error)

EncodeString encodes any golang variable `value` to JSON string.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	infoData, _ := gjson.EncodeString(info)
	fmt.Println(infoData)

}

Output:

{"Name":"John","Age":18}

func IsValidDataType 

func IsValidDataType(dataType ContentType) bool

IsValidDataType checks and returns whether given `dataType` a valid data type for loading.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	fmt.Println(gjson.IsValidDataType("json"))
	fmt.Println(gjson.IsValidDataType("yml"))
	fmt.Println(gjson.IsValidDataType("js"))
	fmt.Println(gjson.IsValidDataType("mp4"))
	fmt.Println(gjson.IsValidDataType("xsl"))
	fmt.Println(gjson.IsValidDataType("txt"))
	fmt.Println(gjson.IsValidDataType(""))
	fmt.Println(gjson.IsValidDataType(".json"))
	fmt.Println(gjson.IsValidDataType(".properties"))

}

Output:

true
true
true
false
false
false
false
true
true

func Marshal 

func Marshal(v interface{}) (marshaledBytes []byte, err error)

Marshal is alias of Encode in order to fit the habit of json.Marshal/Unmarshal functions.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data := map[string]interface{}{
		"name":  "john",
		"score": 100,
	}

	jsonData, _ := gjson.Marshal(data)
	fmt.Println(string(jsonData))

	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "Guo Qiang",
		Age:  18,
	}

	infoData, _ := gjson.Marshal(info)
	fmt.Println(string(infoData))

}

Output:

{"name":"john","score":100}
{"Name":"Guo Qiang","Age":18}

func MarshalIndent 

func MarshalIndent(v interface{}, prefix, indent string) (marshaledBytes []byte, err error)

MarshalIndent is alias of json.MarshalIndent in order to fit the habit of json.MarshalIndent function.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	infoData, _ := gjson.MarshalIndent(info, "", "\t")
	fmt.Println(string(infoData))

}

Output:

{
	"Name": "John",
	"Age": 18
}

func MustEncode 

func MustEncode(value interface{}) []byte

MustEncode performs as Encode, but it panics if any error occurs.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	infoData := gjson.MustEncode(info)
	fmt.Println(string(infoData))

}

Output:

{"Name":"John","Age":18}

func MustEncodeString 

func MustEncodeString(value interface{}) string

MustEncodeString encodes any golang variable `value` to JSON string. It panics if any error occurs.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	infoData := gjson.MustEncodeString(info)
	fmt.Println(infoData)

}

Output:

{"Name":"John","Age":18}

func Unmarshal 

func Unmarshal(data []byte, v interface{}) (err error)

Unmarshal is alias of DecodeTo in order to fit the habit of json.Marshal/Unmarshal functions.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name  string
		Score int
	}

	var info BaseInfo

	jsonContent := "{\"name\":\"john\",\"score\":100}"
	gjson.Unmarshal([]byte(jsonContent), &info)
	fmt.Printf("%+v", info)

}

Output:

{Name:john Score:100}

func Valid 

func Valid(data interface{}) bool

Valid checks whether `data` is a valid JSON data type. The parameter `data` specifies the json format data, which can be either bytes or string type.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data1 := []byte(`{"n":123456789, "m":{"k":"v"}, "a":[1,2,3]}`)
	data2 := []byte(`{"n":123456789, "m":{"k":"v"}, "a":[1,2,3]`)
	fmt.Println(gjson.Valid(data1))
	fmt.Println(gjson.Valid(data2))

}

Output:

true
false

Types

type ContentType added in v2.2.0 

type ContentType string
const (
	ContentTypeJson       ContentType = `json`
	ContentTypeJs         ContentType = `js`
	ContentTypeXml        ContentType = `xml`
	ContentTypeIni        ContentType = `ini`
	ContentTypeYaml       ContentType = `yaml`
	ContentTypeYml        ContentType = `yml`
	ContentTypeToml       ContentType = `toml`
	ContentTypeProperties ContentType = `properties`
)

type Json 

type Json struct {
	// contains filtered or unexported fields
}

Json is the customized JSON struct.

func DecodeToJson 

func DecodeToJson(data interface{}, options ...Options) (*Json, error)

DecodeToJson codes json format `data` to a Json object. The parameter `data` can be either bytes or string type.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	jsonContent := `{"name":"john","score":100}"`
	j, _ := gjson.DecodeToJson([]byte(jsonContent))
	fmt.Println(j.Map())

	// May Output:
	// map[name:john score:100]
}

Output:

func Load 

func Load(path string, safe ...bool) (*Json, error)

Load loads content from specified file `path`, and creates a Json object from its content. Deprecated: use LoadPath instead.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
	"github.com/gogf/gf/v2/test/gtest"
)

func main() {
	jsonFilePath := gtest.DataPath("json", "data1.json")
	j, _ := gjson.Load(jsonFilePath)
	fmt.Println(j.Get("name"))
	fmt.Println(j.Get("score"))

	notExistFilePath := gtest.DataPath("json", "data2.json")
	j2, _ := gjson.Load(notExistFilePath)
	fmt.Println(j2.Get("name"))

}

Output:

john
100

func LoadContent 

func LoadContent(data []byte, safe ...bool) (*Json, error)

LoadContent creates a Json object from given content, it checks the data type of `content` automatically, supporting data content type as follows: JSON, XML, INI, YAML and TOML.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	jsonContent := []byte(`{"name":"john", "score":"100"}`)

	j, _ := gjson.LoadContent(jsonContent)

	fmt.Println(j.Get("name"))
	fmt.Println(j.Get("score"))

}

Output:

john
100

func LoadContentType 

func LoadContentType(dataType ContentType, data []byte, safe ...bool) (*Json, error)

LoadContentType creates a Json object from given type and content, supporting data content type as follows: JSON, XML, INI, YAML and TOML.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	var (
		jsonContent = []byte(`{"name":"john", "score":"100"}`)
		xmlContent  = []byte(`
<?xml version="1.0" encoding="UTF-8"?>
<base>
	<name>john</name>
	<score>100</score>
</base>
`)
	)

	j, _ := gjson.LoadContentType("json", jsonContent)
	x, _ := gjson.LoadContentType("xml", xmlContent)
	j1, _ := gjson.LoadContentType("json", []byte(""))

	fmt.Println(j.Get("name"))
	fmt.Println(j.Get("score"))
	fmt.Println(x.Get("base.name"))
	fmt.Println(x.Get("base.score"))
	fmt.Println(j1.Get(""))

}

Output:

john
100
john
100

func LoadIni 

func LoadIni(data []byte, safe ...bool) (*Json, error)

LoadIni creates a Json object from given INI format content.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	iniContent := []byte(`
[base]
name = john
score = 100
`)
	j, _ := gjson.LoadIni(iniContent)
	fmt.Println(j.Get("base.name"))
	fmt.Println(j.Get("base.score"))

}

Output:

john
100

func LoadJson 

func LoadJson(data []byte, safe ...bool) (*Json, error)

LoadJson creates a Json object from given JSON format content.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	jsonContent := []byte(`{"name":"john", "score":"100"}`)
	j, _ := gjson.LoadJson(jsonContent)
	fmt.Println(j.Get("name"))
	fmt.Println(j.Get("score"))

}

Output:

john
100

func LoadPath added in v2.8.0 

func LoadPath(path string, options Options) (*Json, error)

LoadPath loads content from specified file `path`, and creates a Json object from its content.

func LoadProperties added in v2.1.0 

func LoadProperties(data []byte, safe ...bool) (*Json, error)

LoadProperties creates a Json object from given TOML format content.

func LoadToml 

func LoadToml(data []byte, safe ...bool) (*Json, error)

LoadToml creates a Json object from given TOML format content.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	tomlContent := []byte(`
[base]
  name = "john"
  score = 100
`)

	j, _ := gjson.LoadToml(tomlContent)
	fmt.Println(j.Get("base.name"))
	fmt.Println(j.Get("base.score"))

}

Output:

john
100

func LoadWithOptions added in v2.1.0 

func LoadWithOptions(data []byte, options Options) (*Json, error)

LoadWithOptions creates a Json object from given JSON format content and options.

func LoadXml 

func LoadXml(data []byte, safe ...bool) (*Json, error)

LoadXml creates a Json object from given XML format content.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	xmlContent := []byte(`
<?xml version="1.0" encoding="UTF-8"?>
<base>
	<name>john</name>
	<score>100</score>
</base>
`)
	j, _ := gjson.LoadXml(xmlContent)
	fmt.Println(j.Get("base.name"))
	fmt.Println(j.Get("base.score"))

}

Output:

john
100

func LoadYaml 

func LoadYaml(data []byte, safe ...bool) (*Json, error)

LoadYaml creates a Json object from given YAML format content.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	yamlContent := []byte(`
base:
  name: john
  score: 100
`)

	j, _ := gjson.LoadYaml(yamlContent)
	fmt.Println(j.Get("base.name"))
	fmt.Println(j.Get("base.score"))

}

Output:

john
100

func New 

func New(data interface{}, safe ...bool) *Json

New creates a Json object with any variable type of `data`, but `data` should be a map or slice for data access reason, or it will make no sense.

The parameter `safe` specifies whether using this Json object in concurrent-safe context, which is false in default.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	jsonContent := `{"name":"john", "score":"100"}`
	j := gjson.New(jsonContent)
	fmt.Println(j.Get("name"))
	fmt.Println(j.Get("score"))

}

Output:

john
100

func NewWithOptions 

func NewWithOptions(data interface{}, options Options) *Json

NewWithOptions creates a Json object with any variable type of `data`, but `data` should be a map or slice for data access reason, or it will make no sense.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type Me struct {
		Name  string `tag:"name"`
		Score int    `tag:"score"`
		Title string
	}
	me := Me{
		Name:  "john",
		Score: 100,
		Title: "engineer",
	}

	j := gjson.NewWithOptions(me, gjson.Options{
		Tags: "tag",
	})
	fmt.Println(j.Get("name"))
	fmt.Println(j.Get("score"))
	fmt.Println(j.Get("Title"))

}

Output:

john
100
engineer

func NewWithTag 

func NewWithTag(data interface{}, tags string, safe ...bool) *Json

NewWithTag creates a Json object with any variable type of `data`, but `data` should be a map or slice for data access reason, or it will make no sense.

The parameter `tags` specifies priority tags for struct conversion to map, multiple tags joined with char ','.

The parameter `safe` specifies whether using this Json object in concurrent-safe context, which is false in default.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type Me struct {
		Name  string `tag:"name"`
		Score int    `tag:"score"`
		Title string
	}
	me := Me{
		Name:  "john",
		Score: 100,
		Title: "engineer",
	}
	j := gjson.NewWithTag(me, "tag", true)
	fmt.Println(j.Get("name"))
	fmt.Println(j.Get("score"))
	fmt.Println(j.Get("Title"))

}

Output:

john
100
engineer

func (*Json) Append 

func (j *Json) Append(pattern string, value interface{}) error

Append appends value to the value by specified `pattern`. The target value by `pattern` should be type of slice.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data := []byte(`
{
	"users" : {
            "count" : 1,
            "array" : ["John", "Ming"]
        }
    }
`)

	j, _ := gjson.LoadContent(data)

	j.Append("users.array", "Lily")

	fmt.Println(j.Get("users.array").Array())

}

Output:

[John Ming Lily]

func (*Json) Array 

func (j *Json) Array() []interface{}

Array converts current Json object to []interface{}. It returns nil if fails.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data := []byte(`
{
	"users" : {
            "count" : 1,
            "array" : ["John", "Ming"]
        }
    }
`)

	j, _ := gjson.LoadContent(data)

	fmt.Println(j.Get("users.array"))

}

Output:

["John","Ming"]

func (*Json) Contains 

func (j *Json) Contains(pattern string) bool

Contains checks whether the value by specified `pattern` exist.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	fmt.Println(j.Contains("Age"))
	fmt.Println(j.Contains("Addr"))

}

Output:

true
false

func (*Json) Dump 

func (j *Json) Dump()

Dump prints current Json object with more manually readable.

Example 
package main

import (
	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data := []byte(`{"name":"john","age":"18"}`)

	j, _ := gjson.LoadContent(data)
	j.Dump()

	// May Output:
	// {
	//	"name": "john",
	//	"age":  "18",
	// }
}

Output:

func (*Json) Get 

func (j *Json) Get(pattern string, def ...interface{}) *gvar.Var

Get retrieves and returns value by specified `pattern`. It returns all values of current Json object if `pattern` is given ".". It returns nil if no value found by `pattern`.

We can also access slice item by its index number in `pattern` like: "list.10", "array.0.name", "array.0.1.id".

It returns a default value specified by `def` if value for `pattern` is not found.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data := []byte(`
{
	"users" : {
		"count" : 1,
		"array" : ["John", "Ming"]
	}
}
`)

	j, _ := gjson.LoadContent(data)
	fmt.Println(j.Get("."))
	fmt.Println(j.Get("users"))
	fmt.Println(j.Get("users.count"))
	fmt.Println(j.Get("users.array"))

	var nilJ *gjson.Json = nil
	fmt.Println(nilJ.Get("."))

}

Output:

{"users":{"array":["John","Ming"],"count":1}}
{"array":["John","Ming"],"count":1}
1
["John","Ming"]

func (*Json) GetJson 

func (j *Json) GetJson(pattern string, def ...interface{}) *Json

GetJson gets the value by specified `pattern`, and converts it to an un-concurrent-safe Json object.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data := []byte(`
{
	"users" : {
            "count" : 1,
            "array" : ["John", "Ming"]
        }
    }
`)

	j, _ := gjson.LoadContent(data)

	fmt.Println(j.GetJson("users.array").Array())

}

Output:

[John Ming]

func (*Json) GetJsonMap 

func (j *Json) GetJsonMap(pattern string, def ...interface{}) map[string]*Json

GetJsonMap gets the value by specified `pattern`, and converts it to a map of un-concurrent-safe Json object.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data := []byte(`
{
	"users" : {
            "count" : 1,
			"array" : {
				"info" : {"Age":18,"Name":"John"},
				"addr" : {"City":"Chengdu","Company":"Tencent"}
			}
        }
    }
`)

	j, _ := gjson.LoadContent(data)

	jsonMap := j.GetJsonMap("users.array")

	for _, json := range jsonMap {
		fmt.Println(json.Interface())
	}

	// May Output:
	// map[City:Chengdu Company:Tencent]
	// map[Age:18 Name:John]
}

Output:

func (*Json) GetJsons 

func (j *Json) GetJsons(pattern string, def ...interface{}) []*Json

GetJsons gets the value by specified `pattern`, and converts it to a slice of un-concurrent-safe Json object.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data := []byte(`
{
	"users" : {
            "count" : 3,
            "array" : [{"Age":18,"Name":"John"}, {"Age":20,"Name":"Tom"}]
        }
    }
`)

	j, _ := gjson.LoadContent(data)

	jsons := j.GetJsons("users.array")
	for _, json := range jsons {
		fmt.Println(json.Interface())
	}

}

Output:

map[Age:18 Name:John]
map[Age:20 Name:Tom]

func (*Json) Interface 

func (j *Json) Interface() interface{}

Interface returns the json value.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	fmt.Println(j.Interface())

	var nilJ *gjson.Json = nil
	fmt.Println(nilJ.Interface())

}

Output:

map[Age:18 Name:John]
<nil>

func (*Json) Interfaces 

func (j *Json) Interfaces() []interface{}

Interfaces implements interface function Interfaces().

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	infoList := []BaseInfo{
		{
			Name: "John",
			Age:  18,
		},
		{
			Name: "Tom",
			Age:  20,
		},
	}

	j := gjson.New(infoList)
	fmt.Println(j.Interfaces())

}

Output:

[{John 18} {Tom 20}]

func (*Json) IsNil 

func (j *Json) IsNil() bool

IsNil checks whether the value pointed by `j` is nil.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data1 := []byte(`{"n":123456789, "m":{"k":"v"}, "a":[1,2,3]}`)
	data2 := []byte(`{"n":123456789, "m":{"k":"v"}, "a":[1,2,3]`)

	j1, _ := gjson.LoadContent(data1)
	fmt.Println(j1.IsNil())

	j2, _ := gjson.LoadContent(data2)
	fmt.Println(j2.IsNil())

}

Output:

false
true

func (*Json) Len 

func (j *Json) Len(pattern string) int

Len returns the length/size of the value by specified `pattern`. The target value by `pattern` should be type of slice or map. It returns -1 if the target value is not found, or its type is invalid.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data := []byte(`
{
	"users" : {
            "count" : 1,
			"nameArray" : ["Join", "Tom"],
			"infoMap" : {
				"name" : "Join",
				"age" : 18,
				"addr" : "ChengDu"
			}
        }
    }
`)

	j, _ := gjson.LoadContent(data)

	fmt.Println(j.Len("users.nameArray"))
	fmt.Println(j.Len("users.infoMap"))

}

Output:

2
3

func (*Json) Map 

func (j *Json) Map() map[string]interface{}

Map converts current Json object to map[string]interface{}. It returns nil if fails.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data := []byte(`
{
	"users" : {
            "count" : 1,
            "info" : {
				"name" : "John",
				"age" : 18,
				"addr" : "ChengDu"
			}
        }
    }
`)

	j, _ := gjson.LoadContent(data)

	fmt.Println(j.Get("users.info").Map())

}

Output:

map[addr:ChengDu age:18 name:John]

func (*Json) MapStrAny 

func (j *Json) MapStrAny() map[string]interface{}

MapStrAny implements interface function MapStrAny().

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	fmt.Println(j.MapStrAny())

}

Output:

map[Age:18 Name:John]

func (Json) MarshalJSON 

func (j Json) MarshalJSON() ([]byte, error)

MarshalJSON implements the interface MarshalJSON for json.Marshal.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	jsonBytes, _ := j.MarshalJSON()
	fmt.Println(string(jsonBytes))

}

Output:

{"Age":18,"Name":"John"}

func (*Json) MustAppend 

func (j *Json) MustAppend(pattern string, value interface{})

MustAppend performs as Append, but it panics if any error occurs.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data := []byte(`
{
	"users" : {
            "count" : 1,
            "array" : ["John", "Ming"]
        }
    }
`)

	j, _ := gjson.LoadContent(data)

	j.MustAppend("users.array", "Lily")

	fmt.Println(j.Get("users.array").Array())

}

Output:

[John Ming Lily]

func (*Json) MustRemove 

func (j *Json) MustRemove(pattern string)

MustRemove performs as Remove, but it panics if any error occurs.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	j.MustRemove("Age")
	fmt.Println(j.Var().String())

}

Output:

{"Name":"John"}

func (*Json) MustSet 

func (j *Json) MustSet(pattern string, value interface{})

MustSet performs as Set, but it panics if any error occurs.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	j.MustSet("Addr", "ChengDu")
	fmt.Println(j.Var().String())

}

Output:

{"Addr":"ChengDu","Age":18,"Name":"John"}

func (*Json) MustToIni 

func (j *Json) MustToIni() []byte
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
	}

	info := BaseInfo{
		Name: "John",
	}

	j := gjson.New(info)
	IniBytes := j.MustToIni()
	fmt.Println(string(IniBytes))

}

Output:

Name=John

func (*Json) MustToIniString 

func (j *Json) MustToIniString() string

MustToIniString .

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
	}

	info := BaseInfo{
		Name: "John",
	}

	j := gjson.New(info)
	IniStr := j.MustToIniString()
	fmt.Println(string(IniStr))

}

Output:

Name=John

func (*Json) MustToJson 

func (j *Json) MustToJson() []byte
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	jsonBytes := j.MustToJson()
	fmt.Println(string(jsonBytes))

}

Output:

{"Age":18,"Name":"John"}

func (*Json) MustToJsonIndent 

func (j *Json) MustToJsonIndent() []byte
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	jsonBytes := j.MustToJsonIndent()
	fmt.Println(string(jsonBytes))

}

Output:

{
	"Age": 18,
	"Name": "John"
}

func (*Json) MustToJsonIndentString 

func (j *Json) MustToJsonIndentString() string
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	jsonStr := j.MustToJsonIndentString()
	fmt.Println(jsonStr)

}

Output:

{
	"Age": 18,
	"Name": "John"
}

func (*Json) MustToJsonString 

func (j *Json) MustToJsonString() string
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	jsonStr := j.MustToJsonString()
	fmt.Println(jsonStr)

}

Output:

{"Age":18,"Name":"John"}

func (*Json) MustToProperties added in v2.1.0 

func (j *Json) MustToProperties() []byte
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
	}

	info := BaseInfo{
		Name: "John",
	}

	j := gjson.New(info)
	pr := j.MustToProperties()
	fmt.Println(string(pr))

}

Output:

name = John

func (*Json) MustToPropertiesString added in v2.1.0 

func (j *Json) MustToPropertiesString() string

MustTopropertiesString

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
	}

	info := BaseInfo{
		Name: "John",
	}

	j := gjson.New(info)
	pr := j.MustToPropertiesString()
	fmt.Println(pr)

}

Output:

name = John

func (*Json) MustToToml 

func (j *Json) MustToToml() []byte
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	TomlBytes := j.MustToToml()
	fmt.Println(string(TomlBytes))

}

Output:

Age = 18
Name = "John"

func (*Json) MustToTomlString 

func (j *Json) MustToTomlString() string
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	TomlStr := j.MustToTomlString()
	fmt.Println(string(TomlStr))

}

Output:

Age = 18
Name = "John"

func (*Json) MustToXml 

func (j *Json) MustToXml(rootTag ...string) []byte
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	xmlBytes := j.MustToXml()
	fmt.Println(string(xmlBytes))

}

Output:

<doc><Age>18</Age><Name>John</Name></doc>

func (*Json) MustToXmlIndent 

func (j *Json) MustToXmlIndent(rootTag ...string) []byte
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	xmlBytes := j.MustToXmlIndent()
	fmt.Println(string(xmlBytes))

}

Output:

<doc>
	<Age>18</Age>
	<Name>John</Name>
</doc>

func (*Json) MustToXmlIndentString 

func (j *Json) MustToXmlIndentString(rootTag ...string) string
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	xmlStr := j.MustToXmlIndentString()
	fmt.Println(string(xmlStr))

}

Output:

<doc>
	<Age>18</Age>
	<Name>John</Name>
</doc>

func (*Json) MustToXmlString 

func (j *Json) MustToXmlString(rootTag ...string) string
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	xmlStr := j.MustToXmlString()
	fmt.Println(string(xmlStr))

}

Output:

<doc><Age>18</Age><Name>John</Name></doc>

func (*Json) MustToYaml 

func (j *Json) MustToYaml() []byte
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	YamlBytes := j.MustToYaml()
	fmt.Println(string(YamlBytes))

}

Output:

Age: 18
Name: John

func (*Json) MustToYamlString 

func (j *Json) MustToYamlString() string
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	YamlStr := j.MustToYamlString()
	fmt.Println(string(YamlStr))

}

Output:

Age: 18
Name: John

func (*Json) Remove 

func (j *Json) Remove(pattern string) error

Remove deletes value with specified `pattern`. It supports hierarchical data access by char separator, which is '.' in default.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	j.Remove("Age")
	fmt.Println(j.Var().String())

}

Output:

{"Name":"John"}

func (*Json) Scan 

func (j *Json) Scan(pointer interface{}, mapping ...map[string]string) error

Scan automatically calls Struct or Structs function according to the type of parameter `pointer` to implement the converting.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data := []byte(`{"name":"john","age":"18"}`)

	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{}

	j, _ := gjson.LoadContent(data)
	j.Scan(&info)

	fmt.Println(info)

	// May Output:
	// {john 18}
}

Output:

func (*Json) Set 

func (j *Json) Set(pattern string, value interface{}) error

Set sets value with specified `pattern`. It supports hierarchical data access by char separator, which is '.' in default.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	j.Set("Addr", "ChengDu")
	j.Set("Friends.0", "Tom")
	fmt.Println(j.Var().String())

}

Output:

{"Addr":"ChengDu","Age":18,"Friends":["Tom"],"Name":"John"}

func (*Json) SetSplitChar 

func (j *Json) SetSplitChar(char byte)

SetSplitChar sets the separator char for hierarchical data access.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data :=
		`{
        "users" : {
            "count" : 2,
            "list"  : [
                {"name" : "Ming",  "score" : 60},
                {"name" : "John", "score" : 99.5}
            ]
        }
    }`
	if j, err := gjson.DecodeToJson(data); err != nil {
		panic(err)
	} else {
		j.SetSplitChar('#')
		fmt.Println("John Score:", j.Get("users#list#1#score").Float32())
	}
}

Output:

John Score: 99.5

func (*Json) SetViolenceCheck 

func (j *Json) SetViolenceCheck(enabled bool)

SetViolenceCheck enables/disables violence check for hierarchical data access.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	data :=
		`{
        "users" : {
            "count" : 100
        },
        "users.count" : 101
    }`
	if j, err := gjson.DecodeToJson(data); err != nil {
		fmt.Println(err)
	} else {
		j.SetViolenceCheck(false)
		fmt.Println("Users Count:", j.Get("users.count"))
		j.SetViolenceCheck(true)
		fmt.Println("Users Count:", j.Get("users.count"))
	}
}

Output:

Users Count: 100
Users Count: 101

func (*Json) String added in v2.2.6 

func (j *Json) String() string

String returns current Json object as string.

func (*Json) ToIni 

func (j *Json) ToIni() ([]byte, error)

ToIni json to ini

Example

======================================================================== INI ======================================================================== 

package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	IniBytes, _ := j.ToIni()
	fmt.Println(string(IniBytes))

	// May Output:
	// Name=John
	// Age=18
}

Output:

func (*Json) ToIniString 

func (j *Json) ToIniString() (string, error)

ToIniString ini to string

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
	}

	info := BaseInfo{
		Name: "John",
	}

	j := gjson.New(info)
	IniStr, _ := j.ToIniString()
	fmt.Println(string(IniStr))

}

Output:

Name=John

func (*Json) ToJson 

func (j *Json) ToJson() ([]byte, error)
Example

======================================================================== JSON ======================================================================== 

package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	jsonBytes, _ := j.ToJson()
	fmt.Println(string(jsonBytes))

}

Output:

{"Age":18,"Name":"John"}

func (*Json) ToJsonIndent 

func (j *Json) ToJsonIndent() ([]byte, error)
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	jsonBytes, _ := j.ToJsonIndent()
	fmt.Println(string(jsonBytes))

}

Output:

{
	"Age": 18,
	"Name": "John"
}

func (*Json) ToJsonIndentString 

func (j *Json) ToJsonIndentString() (string, error)
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	jsonStr, _ := j.ToJsonIndentString()
	fmt.Println(jsonStr)

}

Output:

{
	"Age": 18,
	"Name": "John"
}

func (*Json) ToJsonString 

func (j *Json) ToJsonString() (string, error)
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	jsonStr, _ := j.ToJsonString()
	fmt.Println(jsonStr)

}

Output:

{"Age":18,"Name":"John"}

func (*Json) ToProperties added in v2.1.0 

func (j *Json) ToProperties() ([]byte, error)

======================================================================== properties ======================================================================== Toproperties json to properties

Example

======================================================================== Properties ======================================================================== 

package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	pr, _ := j.ToProperties()
	fmt.Println(string(pr))

	// May Output:
	// name = John
	// age = 18
}

Output:

func (*Json) ToPropertiesString added in v2.1.0 

func (j *Json) ToPropertiesString() (string, error)

TopropertiesString properties to string

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
	}

	info := BaseInfo{
		Name: "John",
	}

	j := gjson.New(info)
	pr, _ := j.ToPropertiesString()
	fmt.Println(pr)

}

Output:

name = John

func (*Json) ToToml 

func (j *Json) ToToml() ([]byte, error)
Example

======================================================================== TOML ======================================================================== 

package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	TomlBytes, _ := j.ToToml()
	fmt.Println(string(TomlBytes))

}

Output:

Age = 18
Name = "John"

func (*Json) ToTomlString 

func (j *Json) ToTomlString() (string, error)
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	TomlStr, _ := j.ToTomlString()
	fmt.Println(string(TomlStr))

}

Output:

Age = 18
Name = "John"

func (*Json) ToXml 

func (j *Json) ToXml(rootTag ...string) ([]byte, error)
Example

======================================================================== XML ======================================================================== 

package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	xmlBytes, _ := j.ToXml()
	fmt.Println(string(xmlBytes))

}

Output:

<doc><Age>18</Age><Name>John</Name></doc>

func (*Json) ToXmlIndent 

func (j *Json) ToXmlIndent(rootTag ...string) ([]byte, error)
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	xmlBytes, _ := j.ToXmlIndent()
	fmt.Println(string(xmlBytes))

}

Output:

<doc>
	<Age>18</Age>
	<Name>John</Name>
</doc>

func (*Json) ToXmlIndentString 

func (j *Json) ToXmlIndentString(rootTag ...string) (string, error)
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	xmlStr, _ := j.ToXmlIndentString()
	fmt.Println(string(xmlStr))

}

Output:

<doc>
	<Age>18</Age>
	<Name>John</Name>
</doc>

func (*Json) ToXmlString 

func (j *Json) ToXmlString(rootTag ...string) (string, error)
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	xmlStr, _ := j.ToXmlString()
	fmt.Println(string(xmlStr))

}

Output:

<doc><Age>18</Age><Name>John</Name></doc>

func (*Json) ToYaml 

func (j *Json) ToYaml() ([]byte, error)
Example

======================================================================== YAML ======================================================================== 

package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	YamlBytes, _ := j.ToYaml()
	fmt.Println(string(YamlBytes))

}

Output:

Age: 18
Name: John

func (*Json) ToYamlIndent 

func (j *Json) ToYamlIndent(indent string) ([]byte, error)
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	YamlBytes, _ := j.ToYamlIndent("")
	fmt.Println(string(YamlBytes))

}

Output:

Age: 18
Name: John

func (*Json) ToYamlString 

func (j *Json) ToYamlString() (string, error)
Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	YamlStr, _ := j.ToYamlString()
	fmt.Println(string(YamlStr))

}

Output:

Age: 18
Name: John

func (*Json) UnmarshalJSON 

func (j *Json) UnmarshalJSON(b []byte) error

UnmarshalJSON implements the interface UnmarshalJSON for json.Unmarshal.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	jsonStr := `{"Age":18,"Name":"John"}`

	j := gjson.New("")
	j.UnmarshalJSON([]byte(jsonStr))
	fmt.Println(j.Map())

}

Output:

map[Age:18 Name:John]

func (*Json) UnmarshalValue 

func (j *Json) UnmarshalValue(value interface{}) error

UnmarshalValue is an interface implement which sets any type of value for Json.

func (*Json) Var 

func (j *Json) Var() *gvar.Var

Var returns the json value as *gvar.Var.

Example 
package main

import (
	"fmt"

	"github.com/gogf/gf/v2/encoding/gjson"
)

func main() {
	type BaseInfo struct {
		Name string
		Age  int
	}

	info := BaseInfo{
		Name: "John",
		Age:  18,
	}

	j := gjson.New(info)
	fmt.Println(j.Var().String())
	fmt.Println(j.Var().Map())

}

Output:

{"Age":18,"Name":"John"}
map[Age:18 Name:John]

type Options 

type Options struct {
	Safe      bool        // Mark this object is for in concurrent-safe usage. This is especially for Json object creating.
	Tags      string      // Custom priority tags for decoding, eg: "json,yaml,MyTag". This is especially for struct parsing into Json object.
	Type      ContentType // Type specifies the data content type, eg: json, xml, yaml, toml, ini.
	StrNumber bool        // StrNumber causes the Decoder to unmarshal a number into an interface{} as a string instead of as a float64.
}

Options for Json object creating/loading.

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