Question

我有一个网站正在尝试提取一些数据。我正在使用窗口调试器复制获取

fetch("website", {"credentials":"include","headers":{"accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3","accept-language":"en-US,en;q=0.9","upgrade-insecure-requests":"1"},"referrerPolicy":"no-referrer-when-downgrade","body":null,"method":"GET","mode":"cors"})
.then(response => {console.log(response)})

这有效，并且我能够在调试器中检查响应。我要访问数据正文：

body: (...)
bodyUsed: false
headers: Headers {}
ok: true
redirected: false
status: 200
statusText: ""
type: "basic"
url: website
__proto__: Response

我读到我需要将它变成这样的json对象：

fetch("website", {"credentials":"include","headers":{"accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3","accept-language":"en-US,en;q=0.9","upgrade-insecure-requests":"1"},"referrerPolicy":"no-referrer-when-downgrade","body":null,"method":"GET","mode":"cors"})
    .then(response => {console.log(response.json())})

我收到此错误：

[[PromiseStatus]]: "rejected"
[[PromiseValue]]: SyntaxError: Unexpected token < in JSON at position 0
message: "Unexpected token < in JSON at position 0"

我对获取并不了解太多，并试图将获取的内容拼凑起来。

我在做什么错？如何访问body数据？

Answer 1

在请求标头中，您指定您将接受text/html响应。

请尝试改为指定正确的MIME类型application/json-API应该返回正确的json数据作为响应。

如果您打算将其作为文本来获取，则可以使用response.text()而不是response.json()来访问文本数据

（请参阅Response body methods上的获取文档）

fetch => response.json（）请求被拒绝

1 个答案: