curl - 有效的 GitHub api v4 查询不断返回错误 "Problems parsing JSON"

Question

以下是对 GitHub api v4 的 cURL 查询示例，该查询不断返回错误:

curl -H "Authorization: bearer token" -X POST -d " \
 { \
   \"query\": \"query { repositoryOwner(login: \"brianzelip\") { id } }\" \
 } \
" https:\/\/api.github.com\/graphql

返回的错误:

{
  "message": "Problems parsing JSON",
  "documentation_url": "https://developer.github.com/v3"
}

为什么我一直收到这个错误？

根据 GH api v4 docs about forming query calls ，上面的cURL命令是有效的。以下是文档所说的支持我关于上述 cURL 命令有效的说法:

curl -H "Authorization: bearer token" -X POST -d " \
 { \
   \"query\": \"query { viewer { login }}\" \
 } \
" https://api.github.com/graphql

Note: The string value of "query" must escape newline characters or the schema will not parse it correctly. For the POST body, use outer double quotes and escaped inner double quotes.

当我将上述查询输入到 GitHub GraphQL API Explorer 中时，我得到了预期的结果。对于 GH GraphQL Explorer，上述 cURL 命令的格式如下所示:

{
  repositoryOwner(login: "brianzelip") {
    id
  }
}

Answer 1

您必须在 query 中转义嵌套的双引号JSON 字段，您的实际主体将是:

{
 "query": "query { repositoryOwner(login: \"brianzelip\") { id } }"
}

所以更换 \"brianzelip\"与 \\\"brianzelip\\\" :

curl -H "Authorization: bearer token" -d " \
 { \
   \"query\": \"query { repositoryOwner(login: \\\"brianzelip\\\") { id } }\" \
 } \
" https://api.github.com/graphql

您还可以使用单引号代替双引号来包裹正文:

curl -H "Authorization: bearer token" -d '
 {
   "query": "query { repositoryOwner(login: \"brianzelip\") { id } }"
 }
' https://api.github.com/graphql

您也可以使用 heredoc :

curl -H "Authorization: bearer token" -d @- https://api.github.com/graphql <<EOF
{
    "query": "query { repositoryOwner(login: \"brianzelip\") { id } }"
}
EOF