json 解码/解组未按 json 中的预期工作

大家好，今天本人给大家带来文章《json 解码/解组未按 json 中的预期工作》，文中内容主要涉及到，如果你对Golang方面的知识点感兴趣，那就请各位朋友继续看下去吧~希望能真正帮到你们，谢谢！

我有一个身份验证有效负载，需要对其进行解码才能获取 web 应用程序中的一些令牌：

{
    "access_token": "eyjhbgcioijsuzi1niisinr5ccigoiaislduiiwia2lkiia6icjzug9sqmv3z2zbmgxhbfdztnzlnevndgj1whhnou90dvhxefrvbwhkef9nin0.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.a8mdtxpandtn_n3k-6peoiy2p9rmaaka7hxf0attcyk_frpp8gc4eg4se2tgszszkgsvbebp3zjkt6v8mvpv721rqyir99uj-glv48p83wfeau93gf315csxbi4wssph-vahohi75bwpytezdd9cjjunbt53fuxfwjimjzw9zqywbc8czz--7oxscgxjb8rjemflm4ua0wocpw9telpbze7wxmyaibu6dkzqqlksc14wpfi8-urghl2zg2n21kz58nslcribligawdswakkuftwgc6m_pfu8tf6mq2fwwmhwin8aoc_oz6gvyfsdy0v2bxrd1agta8kopm3ipmsa6w",
    "expires_in": 299,
    "refresh_expires_in": 1799,
    "refresh_token": "eyjhbgcioijiuzi1niisinr5ccigoiaislduiiwia2lkiia6icjlm2zmytkxzi05ngjiltqzmwmtywy4ys05mtgymmu1mjbjzwmifq.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.xcvoznyrveggf4ioraq_1balkyma9b0denw1n1e6i_8",
    "token_type": "bearer",
    "id_token": "eyjhbgcioijsuzi1niisinr5ccigoiaislduiiwia2lkiia6icjzug9sqmv3z2zbmgxhbfdztnzlnevndgj1whhnou90dvhxefrvbwhkef9nin0.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.kkipxriaxwiysz9xomr_xhmmgz7_l0q-qgt0whb8yfrsdrpfeprqoe_rknxtxwn6nigoyby78djr9gmtmpacjquumphpo3rgg1o5y088rft4a7nnvuwdjezhx6dkevq5ffl0hvnfuntfuvtqaavyh4m6tjjo6nakyj1zsyrrwszzmnxzd0s4xy3ov19doiyrll3qbxhgw33plyla5dias_knrgvmlspnjt61t810kqn-dt1c4efmz1iz7bfh4ruck4ohgzmplr3znqmmijirk8qt7uktjvhg-tlmfsbme0r_9ujdq9wxjz7pdi7pfykvov55o9lzk2pbajihe3ukia",
    "not-before-policy": 1549293916,
    "session_state": "66b3d62d-b3c6-42bb-8679-f0ded0e78957",
    "scope": "openid email profile"
}

我使用的结构如下：

type token struct {
    accesstoken  string    `json:"access_token"`
    tokentype    string    `json:"token_type"`
    refreshtoken string    `json:"refresh_token"`
    expiry       time.time `json:"expires_in"`
}

解码响应后，我尝试打印响应：

var authToken Token
json.Unmarshal(response.Body, &authToken)

        fmt.Println("-------------------- accessToken " + authToken.AccessToken)
        fmt.Println("-------------------- refreshToken " + authToken.RefreshToken)
        fmt.Println("-------------------- expires ", authToken.Expiry)
        fmt.Println("--------------------  type " + authToken.TokenType)

只有第一个accesstoken有值，其他都是空的。

我还尝试使用 json.newdecoder(response.body).decode(&authtoken)

相同的结果。

我的做法有什么问题吗？

解决方案

您必须检查来自 json.unmarshal 或 decoder.decode 的错误。
而"expires_in": 299,不是时间，而是int。

代码：

package main

import (
  "encoding/json"
  "fmt"
  "net/http"
)

type token struct {
  accesstoken  string    `json:"access_token"`
  tokentype    string    `json:"token_type"`
  refreshtoken string    `json:"refresh_token"`
  expiry       int       `json:"expires_in"`
}

func main() {
  http.handlefunc("/", func(w http.responsewriter, r *http.request) {
    decoder := json.newdecoder(r.body)
    var authtoken token
    if err := decoder.decode(&authtoken); err != nil {
      fmt.fprintf(w, "error: %s", err)
      return
    }

    fmt.println("-------------------- accesstoken " + authtoken.accesstoken)
    fmt.println("-------------------- refreshtoken " + authtoken.refreshtoken)
    fmt.println("-------------------- expires ", authtoken.expiry)
    fmt.println("--------------------  type " + authtoken.tokentype)
  })

  http.listenandserve(":8000", nil)
}

卷曲：

curl -xpost 'http://localhost:8000' -h 'content-type: application/json' -d '{
  "access_token": "at",
  "refresh_token": "rt",
  "expires_in": 299,
  "token_type": "bearer"
}'

结果：

-------------------- accessToken at
-------------------- refreshToken rt
-------------------- expires  299
--------------------  type bearer

本篇关于《json 解码/解组未按 json 中的预期工作》的介绍就到此结束啦，但是学无止境，想要了解学习更多关于Golang的相关知识，请关注golang学习网公众号！