英文:
How to get the particular value from parsed json array by using golang?
问题
我正在尝试使用Twitter API获取Twitter的直接消息。我得到了API的JSON数组响应，如下所示：
[{
"id": 694476444991229955,
"id_str": "694476444991229955",
"text": "Got it",
"sender": {
"id": 1690262984,
"id_str": "1690262984",
"name": "Ashok Kumar T",
"screen_name": "Ashok_kumar_T",
"location": "Trivandrum",
"description": "",
"url": null
},
"protected": false,
"followers_count": 68,
"friends_count": 32,
"listed_count": 0,
"created_at": "Thu Aug 22 06:52:53 +0000 2013",
"favourites_count": 5,
"utc_offset": 19800,
"time_zone": "Chennai",
"geo_enabled": true,
"verified": false,
"statuses_count": 124,
"lang": "en",
"contributors_enabled": false,
"is_translator": false,
"is_translation_enabled": false,
"profile_background_color": "131516",
"profile_background_image_url": "http://abs.twimg.com/images/themes/theme14/bg.gif",
"profile_background_image_url_https": "https://abs.twimg.com/images/themes/theme14/bg.gif",
"profile_background_tile": true,
"profile_image_url": "http://pbs.twimg.com/profile_images/378800000337984382/5eded5a0c6fda4a85511aff15e5befd9_normal.jpeg",
"profile_image_url_https": "https://pbs.twimg.com/profile_images/378800000337984382/5eded5a0c6fda4a85511aff15e5befd9_normal.jpeg",
"profile_banner_url": "https://pbs.twimg.com/profile_banners/1690262984/1429709252",
"profile_link_color": "009999",
"profile_sidebar_border_color": "EEEEEE",
"profile_sidebar_fill_color": "EFEFEF",
"profile_text_color": "333333",
"profile_use_background_image": true,
"has_extended_profile": false,
"default_profile": false,
"default_profile_image": false,
"following": true,
"follow_request_sent": false,
"notifications": false
}]
我已成功解析了JSON，但无法从解析后的JSON中获取特定的数据。这是我的Play Golang链接：http://play.golang.org/p/zS42Qws2Di
package main
import (
"encoding/json"
"fmt"
)
type PublicKey struct {
ID int64
ID_STR string
Text string
SENDER struct {
ID int64
ID_STR string
NAME string
}
PROTECTED bool
FOLLOWERS_COUNT int
FRIENDS_COUNT int
LISTED_COUNT int
}
type KeysResponse struct {
Collection []PublicKey
}
func main() {
s := `[{
"id": 694476444991229955,
"id_str": "694476444991229955",
"text": "Got it",
"sender": {
"id": 1690262984,
"id_str": "1690262984",
"name": "Ashok Kumar T",
"screen_name": "Ashok_kumar_T",
"location": "Trivandrum",
"description": "",
"url": null
},
"protected": false,
"followers_count": 68,
"friends_count": 32,
"listed_count": 0,
"created_at": "Thu Aug 22 06:52:53 +0000 2013",
"favourites_count": 5,
"utc_offset": 19800,
"time_zone": "Chennai",
"geo_enabled": true,
"verified": false,
"statuses_count": 124,
"lang": "en",
"contributors_enabled": false,
"is_translator": false,
"is_translation_enabled": false,
"profile_background_color": "131516",
"profile_background_image_url": "http://abs.twimg.com/images/themes/theme14/bg.gif",
"profile_background_image_url_https": "https://abs.twimg.com/images/themes/theme14/bg.gif",
"profile_background_tile": true,
"profile_image_url": "http://pbs.twimg.com/profile_images/378800000337984382/5eded5a0c6fda4a85511aff15e5befd9_normal.jpeg",
"profile_image_url_https": "https://pbs.twimg.com/profile_images/378800000337984382/5eded5a0c6fda4a85511aff15e5befd9_normal.jpeg",
"profile_banner_url": "https://pbs.twimg.com/profile_banners/1690262984/1429709252",
"profile_link_color": "009999",
"profile_sidebar_border_color": "EEEEEE",
"profile_sidebar_fill_color": "EFEFEF",
"profile_text_color": "333333",
"profile_use_background_image": true,
"has_extended_profile": false,
"default_profile": false,
"default_profile_image": false,
"following": true,
"follow_request_sent": false,
"notifications": false
},{
"id": 694476444991229955,
"id_str": "694476444991229955",
"text": "Got it",
"sender": {
"id": 1690262984,
"id_str": "1690262984",
"name": "Ashok Kumar T",
"screen_name": "Ashok_kumar_T",
"location": "Trivandrum",
"description": "",
"url": null
},
"protected": false,
"followers_count": 68,
"friends_count": 32,
"listed_count": 0,
"created_at": "Thu Aug 22 06:52:53 +0000 2013",
"favourites_count": 5,
"utc_offset": 19800,
"time_zone": "Chennai",
"geo_enabled": true,
"verified": false,
"statuses_count": 124,
"lang": "en",
"contributors_enabled": false,
"is_translator": false,
"is_translation_enabled": false,
"profile_background_color": "131516",
"profile_background_image_url": "http://abs.twimg.com/images/themes/theme14/bg.gif",
"profile_background_image_url_https": "https://abs.twimg.com/images/themes/theme14/bg.gif",
"profile_background_tile": true,
"profile_image_url": "http://pbs.twimg.com/profile_images/378800000337984382/5eded5a0c6fda4a85511aff15e5befd9_normal.jpeg",
"profile_image_url_https": "https://pbs.twimg.com/profile_images/378800000337984382/5eded5a0c6fda4a85511aff15e5befd9_normal.jpeg",
"profile_banner_url": "https://pbs.twimg.com/profile_banners/1690262984/1429709252",
"profile_link_color": "009999",
"profile_sidebar_border_color": "EEEEEE",
"profile_sidebar_fill_color": "EFEFEF",
"profile_text_color": "333333",
"profile_use_background_image": true,
"has_extended_profile": false,
"default_profile": false,
"default_profile_image": false,
"following": true,
"follow_request_sent": false,
"notifications": false
}]`
keys := make([]PublicKey, 0)
err := json.Unmarshal([]byte(s), &keys)
if err == nil {
fmt.Printf("%+v\n", keys)
} else {
fmt.Println(err)
fmt.Printf("%+v\n", keys)
}
myId := keys[l].ID
fmt.Printf(myId)
}
请注意，这只是一个示例代码，其中的变量l没有定义。你需要根据你的需求修改代码以获取特定的数据。
英文:
I am trying to get direct message from twitter using twitter api. I got the api json array respose like
<!-- begin snippet: js hide: false -->
<!-- language: lang-js -->
[{
"id": 694476444991229955,
"id_str": "694476444991229955",
"text": "Got it",
"sender": {
"id": 1690262984,
"id_str": "1690262984",
"name": "Ashok Kumar T",
"screen_name": "Ashok_kumar_T",
"location": "Trivandrum",
"description": "",
"url": null
},
"protected": false,
"followers_count": 68,
"friends_count": 32,
"listed_count": 0,
"created_at": "Thu Aug 22 06:52:53 +0000 2013",
"favourites_count": 5,
"utc_offset": 19800,
"time_zone": "Chennai",
"geo_enabled": true,
"verified": false,
"statuses_count": 124,
"lang": "en",
"contributors_enabled": false,
"is_translator": false,
"is_translation_enabled": false,
"profile_background_color": "131516",
"profile_background_image_url": "http:\/\/abs.twimg.com\/images\/themes\/theme14\/bg.gif",
"profile_background_image_url_https": "https:\/\/abs.twimg.com\/images\/themes\/theme14\/bg.gif",
"profile_background_tile": true,
"profile_image_url": "http:\/\/pbs.twimg.com\/profile_images\/378800000337984382\/5eded5a0c6fda4a85511aff15e5befd9_normal.jpeg",
"profile_image_url_https": "https:\/\/pbs.twimg.com\/profile_images\/378800000337984382\/5eded5a0c6fda4a85511aff15e5befd9_normal.jpeg",
"profile_banner_url": "https:\/\/pbs.twimg.com\/profile_banners\/1690262984\/1429709252",
"profile_link_color": "009999",
"profile_sidebar_border_color": "EEEEEE",
"profile_sidebar_fill_color": "EFEFEF",
"profile_text_color": "333333",
"profile_use_background_image": true,
"has_extended_profile": false,
"default_profile": false,
"default_profile_image": false,
"following": true,
"follow_request_sent": false,
"notifications": false
}]
<!-- end snippet -->
I have successfully parsed the json.But I cant get the particular data from parsed json. Here my play golang link http://play.golang.org/p/zS42Qws2Di
<!-- begin snippet: js hide: false -->
<!-- language: lang-js -->
package main
import (
"encoding/json"
"fmt"
)
type PublicKey struct {
ID int64
ID_STR string
Text string
SENDER struct {
ID int64
ID_STR string
NAME string
}
PROTECTED bool
FOLLOWERS_COUNT int
FRIENDS_COUNT int
LISTED_COUNT int
}
type KeysResponse struct {
Collection []PublicKey
}
func main() {
s := `[{
"id": 694476444991229955,
"id_str": "694476444991229955",
"text": "Got it",
"sender": {
"id": 1690262984,
"id_str": "1690262984",
"name": "Ashok Kumar T",
"screen_name": "Ashok_kumar_T",
"location": "Trivandrum",
"description": "",
"url": null
},
"protected": false,
"followers_count": 68,
"friends_count": 32,
"listed_count": 0,
"created_at": "Thu Aug 22 06:52:53 +0000 2013",
"favourites_count": 5,
"utc_offset": 19800,
"time_zone": "Chennai",
"geo_enabled": true,
"verified": false,
"statuses_count": 124,
"lang": "en",
"contributors_enabled": false,
"is_translator": false,
"is_translation_enabled": false,
"profile_background_color": "131516",
"profile_background_image_url": "http:\/\/abs.twimg.com\/images\/themes\/theme14\/bg.gif",
"profile_background_image_url_https": "https:\/\/abs.twimg.com\/images\/themes\/theme14\/bg.gif",
"profile_background_tile": true,
"profile_image_url": "http:\/\/pbs.twimg.com\/profile_images\/378800000337984382\/5eded5a0c6fda4a85511aff15e5befd9_normal.jpeg",
"profile_image_url_https": "https:\/\/pbs.twimg.com\/profile_images\/378800000337984382\/5eded5a0c6fda4a85511aff15e5befd9_normal.jpeg",
"profile_banner_url": "https:\/\/pbs.twimg.com\/profile_banners\/1690262984\/1429709252",
"profile_link_color": "009999",
"profile_sidebar_border_color": "EEEEEE",
"profile_sidebar_fill_color": "EFEFEF",
"profile_text_color": "333333",
"profile_use_background_image": true,
"has_extended_profile": false,
"default_profile": false,
"default_profile_image": false,
"following": true,
"follow_request_sent": false,
"notifications": false
},{
"id": 694476444991229955,
"id_str": "694476444991229955",
"text": "Got it",
"sender": {
"id": 1690262984,
"id_str": "1690262984",
"name": "Ashok Kumar T",
"screen_name": "Ashok_kumar_T",
"location": "Trivandrum",
"description": "",
"url": null
},
"protected": false,
"followers_count": 68,
"friends_count": 32,
"listed_count": 0,
"created_at": "Thu Aug 22 06:52:53 +0000 2013",
"favourites_count": 5,
"utc_offset": 19800,
"time_zone": "Chennai",
"geo_enabled": true,
"verified": false,
"statuses_count": 124,
"lang": "en",
"contributors_enabled": false,
"is_translator": false,
"is_translation_enabled": false,
"profile_background_color": "131516",
"profile_background_image_url": "http:\/\/abs.twimg.com\/images\/themes\/theme14\/bg.gif",
"profile_background_image_url_https": "https:\/\/abs.twimg.com\/images\/themes\/theme14\/bg.gif",
"profile_background_tile": true,
"profile_image_url": "http:\/\/pbs.twimg.com\/profile_images\/378800000337984382\/5eded5a0c6fda4a85511aff15e5befd9_normal.jpeg",
"profile_image_url_https": "https:\/\/pbs.twimg.com\/profile_images\/378800000337984382\/5eded5a0c6fda4a85511aff15e5befd9_normal.jpeg",
"profile_banner_url": "https:\/\/pbs.twimg.com\/profile_banners\/1690262984\/1429709252",
"profile_link_color": "009999",
"profile_sidebar_border_color": "EEEEEE",
"profile_sidebar_fill_color": "EFEFEF",
"profile_text_color": "333333",
"profile_use_background_image": true,
"has_extended_profile": false,
"default_profile": false,
"default_profile_image": false,
"following": true,
"follow_request_sent": false,
"notifications": false
}]`
keys := make([]PublicKey,0)
err := json.Unmarshal([]byte(s), &keys)
if err == nil {
fmt.Printf("%+v\n", keys)
} else {
fmt.Println(err)
fmt.Printf("%+v\n", keys)
}
myId := keys[l].Id
fmt.Printf(myId)
}
<!-- end snippet -->
答案1
得分: 1
如果目标是打印第二个数组元素的标识符，请使用以下代码：
myId := keys[1].ID // 将1改为l，将Id改为ID
fmt.Println(myId)
英文:
If the goal is to print the identifier of the second array element, then use this code:
myId := keys[1].ID // l changed 1, Id changed to ID
fmt.Println(myId)
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