Google app engine 如何解决“问题”；接收到无效的JSON负载。“未知名称”；错误

我试图从Google安全浏览API v4获得正确的响应。尽管我收到错误“接收到无效的JSON有效负载。未知名称”

我使用了一个基于上提到的有效负载示例的有效负载

我的有效载荷有问题。我认为它应该是一个字符串，而不是一个真正的dict。当我使用dict时，我得到一个错误：TypeError:hastype，但应该是：str，unicode

我使用的代码是：

result = urlfetch.fetch(url, method=urlfetch.POST, payload=payload)

url是（带[api密钥]的当然是我的api密钥）：

有效负载是以下字符串（不是python dict）：

作为输出，我希望得到一些JSON，这表明这个url是安全的。然而，我得到了以下结果：

{ 
  "error": {
    "code": 400,
    "message": "Invalid JSON payload received. Unknown name \"{\n    \"client\": {\n      \"clientId\":      \"myproject\",\n      \"clientVersion\": \"42\"\n    },\n    \"threatInfo\": {\n      \"threatTypes\":      [\"MALWARE\", \"SOCIAL_ENGINEERING\"],\n      \"platformTypes\":    [\"WINDOWS\"],\n      \"threatEntryTypes\": [\"URL\"],\n      \"threatEntries\": [\n        {\"url\":\"http://www.example.com/\"}\n      ]\n    }\n  }\": Cannot bind query parameter. Field '{\n    \"client\": {\n      \"clientId\":      \"myproject\",\n      \"clientVersion\": \"42\"\n    },\n    \"threatInfo\": {\n      \"threatTypes\":      [\"MALWARE\", \"SOCIAL_ENGINEERING\"],\n      \"platformTypes\":    [\"WINDOWS\"],\n      \"threatEntryTypes\": [\"URL\"],\n      \"threatEntries\": [\n        {\"url\":\"http://www' could not be found in request message.",
    "status": "INVALID_ARGUMENT",
    "details": [
      {
        "@type": "type.googleapis.com/google.rpc.BadRequest",
        "fieldViolations": [
          {
            "description": [similar as the message above]
          }
        ]
      }
    ]
  }
}

有什么想法吗，怎么了

---

谢谢，urlfetch应该包含标题内容类型：application/json

result = urlfetch.fetch(url, method=urlfetch.POST, payload=payload, headers={'Content-Type': 'application/json'})

---

尝试删除jsonHi Benjamin中的换行符，谢谢您的建议。然而，这没有帮助。

{ 
  "error": {
    "code": 400,
    "message": "Invalid JSON payload received. Unknown name \"{\n    \"client\": {\n      \"clientId\":      \"myproject\",\n      \"clientVersion\": \"42\"\n    },\n    \"threatInfo\": {\n      \"threatTypes\":      [\"MALWARE\", \"SOCIAL_ENGINEERING\"],\n      \"platformTypes\":    [\"WINDOWS\"],\n      \"threatEntryTypes\": [\"URL\"],\n      \"threatEntries\": [\n        {\"url\":\"http://www.example.com/\"}\n      ]\n    }\n  }\": Cannot bind query parameter. Field '{\n    \"client\": {\n      \"clientId\":      \"myproject\",\n      \"clientVersion\": \"42\"\n    },\n    \"threatInfo\": {\n      \"threatTypes\":      [\"MALWARE\", \"SOCIAL_ENGINEERING\"],\n      \"platformTypes\":    [\"WINDOWS\"],\n      \"threatEntryTypes\": [\"URL\"],\n      \"threatEntries\": [\n        {\"url\":\"http://www' could not be found in request message.",
    "status": "INVALID_ARGUMENT",
    "details": [
      {
        "@type": "type.googleapis.com/google.rpc.BadRequest",
        "fieldViolations": [
          {
            "description": [similar as the message above]
          }
        ]
      }
    ]
  }
}

result = urlfetch.fetch(url, method=urlfetch.POST, payload=payload, headers={'Content-Type': 'application/json'})