正在检索 JSON 内容

Question

我是 laravel 的初学者。我在创建 POST API 时遇到问题。我想使用从其他应用程序 json POST 检索的数据。但它总是 return null 所以我对请求做了一些调查。

当我returndd($request)时，结果是

Illuminate\Http\Request {#43 ▼
  #json: Symfony\Component\HttpFoundation\ParameterBag {#35 ▶}
  #convertedFiles: []
  #userResolver: Closure($guard = null) {#1241 ▼
    class: "Illuminate\Auth\AuthServiceProvider"
    this: Illuminate\Auth\AuthServiceProvider {#22 …}
    use: {▶}
    file: "C:\xampp\htdocs\attendance_online\vendor\laravel\framework\src\Illuminate\Auth\AuthServiceProvider.php"
    line: "105 to 107"
  }
  #routeResolver: Closure() {#1246 ▼
    class: "Illuminate\Routing\Router"
    this: Illuminate\Routing\Router {#26 …}
    use: {▶}
    file: "C:\xampp\htdocs\attendance_online\vendor\laravel\framework\src\Illuminate\Routing\Router.php"
    line: "655 to 657"
  }
  +attributes: Symfony\Component\HttpFoundation\ParameterBag {#45 ▼
    #parameters: []
  }
  +request: Symfony\Component\HttpFoundation\ParameterBag {#35 ▼
    #parameters: []
  }
  +query: Symfony\Component\HttpFoundation\InputBag {#51 ▼
    #parameters: []
  }
  +server: Symfony\Component\HttpFoundation\ServerBag {#47 ▼
    #parameters: array:23 [▶]
  }
  +files: Symfony\Component\HttpFoundation\FileBag {#48 ▼
    #parameters: []
  }
  +cookies: Symfony\Component\HttpFoundation\InputBag {#46 ▼
    #parameters: []
  }
  +headers: Symfony\Component\HttpFoundation\HeaderBag {#49 ▼
    #headers: array:6 [▼
      "accept-encoding" => array:1 [▼
        0 => "gzip,deflate"
      ]
      "content-type" => array:1 [▼
        0 => "application/json"
      ]
      "content-length" => array:1 [▼
        0 => "231"
      ]
      "host" => array:1 [▼
        0 => "localhost:8000"
      ]
      "connection" => array:1 [▼
        0 => "Keep-Alive"
      ]
      "user-agent" => array:1 [▼
        0 => "Apache-HttpClient/4.5.5 (Java/12.0.1)"
      ]
    ]
    #cacheControl: []
  }
  #content: """
    {\n
    \t"id_employee" = "4",\n
    \t"status" = "1",\n
    \t"latitude" = "3.4141414",\n
    \t"longitude" = "98.444444",\n
    \t"timestamp" = "2020-10-11 09:58:00.0000000",\n
    \t"approval" = "1",\n
    \t"message" = "this is message",\n
    \t"picture_reference" = "this is pic"\n
    }
    """
  #languages: null
  #charsets: null
  #encodings: null
  #acceptableContentTypes: null
  #pathInfo: "/api/Attendance"
  #requestUri: "/api/Attendance"
  #baseUrl: ""
  #basePath: null
  #method: "POST"
  #format: null
  #session: null
  #locale: null
  #defaultLocale: "en"
  -preferredFormat: null
  -isHostValid: true
  -isForwardedValid: true
  -isSafeContentPreferred: null
  basePath: ""
  format: "html"
}
}

当我 return $request->getcontent() 结果是

{ "id_employee" = "4", "status" = "1", "latitude" = "3.4141414", "longitude" = "98.444444", "timestamp" = "2020-10-11 09:58:00.0000000", "approval" = "1", "message" = "this is message", "picture_reference" = "this is pic" }

但是当我 return $request->all() 是说

<Empty JSON content>

每当我使用 $request->id_employee 或任何其他数据时，它总是 return 为空。当我将参数放在 URL 上时，如“?id_employee=1”，$request->id_employee 将 return 1. 我不想将数据放在URL，那么如何获取 $request 上的所有内容？

编辑：我已经试过了

$id_employee = $request->id_employee;
$id_employee = $request->input("id_employee")
$id_employee = $request->input("content.id_employee")

并且已经确认 $request->isjson() return 1

Answer 1

你有什么版本的Laravel？您应该能够像这样解码 JSON 内容：

$content = $request->getContent()
$data = json_decode($content, true)
dd(data)

不过请检查 JSON 是否有效 - 您在原始问题中发布的示例 = 通常应该放在 : 的位置！ JSON 需要有效，如果请求具有正确的 Content-Type header，那么您对 request->input("employee_id") 的调用应该有效。这并没有让我想知道 JSON 是否是 well-formatted 所以一定要检查一下。

正在检索 JSON 内容

Retrieving JSON content

api

laravel-7