我有一个可变数据，这是一个接口。当我打印它的类型时，我把它作为json.Number。如何输入强制转换为int / int64 / float64
如果我尝试数据。（float64），它最终会出现恐慌错误
panic: interface conversion: interface {} is json.Number, not float64
答案 0 :(得分：3)
查看此文档以了解MongoClient {
domain: null,
_events: {},
_eventsCount: 0,
_maxListeners: undefined,
s:
{ url: 'mongodb://localhost:27017/BotDb',
options:
{ socketOptions: {},
read_preference_tags: null,
readPreference: [Object],
dbName: 'slackBotDb',
servers: [Object],
server_options: [Object],
db_options: [Object],
rs_options: [Object],
mongos_options: [Object],
socketTimeoutMS: 360000,
connectTimeoutMS: 30000,
promiseLibrary: [Function: Promise] },
promiseLibrary: [Function: Promise],
dbCache: {},
sessions: [] },
topology:
Server {
domain: null,
_events:
{ serverOpening: [Function],
serverDescriptionChanged: [Function],
serverHeartbeatStarted: [Function],
serverHeartbeatSucceeded: [Function],
serverHeartbeatFailed: [Function],
serverClosed: [Function],
topologyOpening: [Function],
topologyClosed: [Function],
topologyDescriptionChanged: [Function],
joined: [Function],
left: [Function],
ping: [Function],
ha: [Function],
authenticated: [Function],
error: [Function],
timeout: [Function],
close: [Function],
parseError: [Function],
open: [Object],
fullsetup: [Object],
all: [Object],
reconnect: [Function] },
_eventsCount: 22,
_maxListeners: undefined,
clientInfo:
{ driver: [Object],
os: [Object],
platform: 'Node.js v7.10.0, LE' },
s:
{ coreTopology: [Object],
sCapabilities: null,
clonedOptions: [Object],
reconnect: true,
emitError: true,
poolSize: 5,
storeOptions: [Object],
store: [Object],
host: 'localhost',
port: 27017,
options: [Object],
sessionPool: [Object],
promiseLibrary: [Function: Promise] } } }
上的可用方法：
https://golang.org/pkg/encoding/json/#Number
> db.getCollection("users");
BotDb.users