为什么 Linkedin Ugc Image Post 返回 500 错误？答案

【问题标题】：Why is Linkedin Ugc Image Post Returning a 500 error?为什么 Linkedin Ugc Image Post 返回 500 错误？
【发布时间】：2019-08-06 22:46:27
【问题描述】：

我正在使用 LinkedIn v2 api 制作图像共享。分三步，根据the LinkedIn docs.

注册要上传的图片。
将您的图片上传到 LinkedIn。
创建图像共享。

我使用 php curl 克服了前两个，但我被困在第三个上。第 3 步，使用 ugcPost 完成。

这是我发送到 ugc 端点的帖子正文：

{
    "author": "urn:li:person:{id-redacted}",
    "lifecycleState": "PUBLISHED",
    "specificContent": {
        "com.linkedin.ugc.ShareContent": {
            "shareCommentary": {
                "text": "hello"
            },
            "shareMediaCategory": "IMAGE",
            "media": {
                "stats": "READY",
                "description": {
                    "text": "this is a descriptoin"
                },
                "media": "urn:li:digitalmediaAsset:{id-redacted}",
                "title": {
                    "text": "this is some title text"
                }
            }
        }
    },
    "visibility": {
        "com.linkedin.ugc.MemberNetworkVisibility": "PUBLIC"
    }
}

这是我用 php 发送 curl post 请求的代码：

    curl_setopt($ch, CURLOPT_URL, $ugcPostEndpoint);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

    curl_setopt($ch, CURLOPT_VERBOSE, true);
    curl_setopt($ch, CURLOPT_STDERR, $out);

    curl_setopt($ch, CURLOPT_TIMEOUT, 30);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array("Content-Type:application/json","X-Restli-Protocol-Version: 2.0.0"));
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $postdata);
    $response = curl_exec($ch);
    $response_status = strval(curl_getinfo($ch, CURLINFO_HTTP_CODE));

从 curl 中返回：

 Hostname was found in DNS cache
   Trying 108.174.10.12...
 Connected to api.linkedin.com (108.174.10.12) port 443 (#2)
 successfully set certificate verify locations:
   CAfile: none
  CApath: /etc/ssl/certs
 SSL connection using {redacted}
 Server certificate:
        subject: C=US; ST=California; L=Mountain View; O=LinkedIn Corporation; CN=tablet.linkedin.com
        start date: 2018-03-30 00:00:00 GMT
        expire date: 2020-04-27 12:00:00 GMT
        subjectAltName: api.linkedin.com matched
        issuer: C=US; O=DigiCert Inc; CN=DigiCert SHA2 Secure Server CA
        SSL certificate verify ok.
 POST /v2/ugcPosts?oauth2_access_token={redacted} HTTP/1.1
Host: api.linkedin.com
Accept: */*
Content-Type:application/json
X-Restli-Protocol-Version: 2.0.0
Content-Length: 734

 upload completely sent off: 734 out of 734 bytes
< HTTP/1.1 500 Server Error
< X-LI-ResponseOrigin: RGW
< Content-Type: application/json
< X-RestLi-Error-Response: true
< X-Restli-Gateway-Error: false
< X-RestLi-Protocol-Version: 2.0.0
< X-Li-Fabric: prod-ltx1
< Transfer-Encoding: chunked
< Connection: keep-alive
< X-Li-Pop: prod-edc2
< X-LI-Proto: http/1.1
< X-LI-UUID: {redacted}
< Set-Cookie: {redacted}
< X-LI-Route-Key: {redacted}
<
 Connection #2 to host api.linkedin.com left intact

为什么会出现这个 500 错误？据我所知，我正在关注所有示例/文档。（我知道 500 错误最终可能是一个问题，但根据我处理 API 的经验，500 错误通常意味着 curl 请求在某种程度上是错误的。

【问题讨论】：

您是否将 OAuth 2.0 访问令牌添加到 Authorization 标头？

标签： php curl linkedin linkedin-api php-curl

【解决方案1】：

我发现我做错了什么，以防其他人遇到类似问题。

正文的媒体部分必须是数组中的第 0 个元素，如下所示：

 "media": [
            {
                "status": "READY",
                "description": {
                    "text": "this is a description"
                },
                "media": "urn:li:digitalmediaAsset:{id}",
                "title": {
                    "text": "this is some title text"
                }
            }
        ]

不是这个：

     "media":
            {
                "status": "READY",
                "description": {
                    "text": "this is a description"
                },
                "media": "urn:li:digitalmediaAsset:{id}",
                "title": {
                    "text": "this is some title text"
                }
            }

LinkedIn 文档并没有让这一点变得非常明显。

【讨论】：