如何制作一个异步/等待获取帖子？ 得到500内部服务器错误

Question

我已经成功地使用thisWorks（）函数向我的php api发送了fetch post，但是我尝试将async / await post（）函数与fetch一起使用，但是在尝试执行此操作时，我不断返回500内部服务器错误响应我不确定如何调试，因为异步函数中的代码与thisWorks（）中的代码基本相同。

这是两个功能-

//I can make a succesful post to my api with this function and it returns a 200 ok response from the server

function thisWorks(title, message, author, id) {
    fetch("http://menu.com/menu/api/post/create.php", {
      method: "POST",
      headers: new Headers(),

      body: JSON.stringify({
        'title' : title,
        'body' : message,
        'author' : author,
        'category_id' : id
      })
    })
    .then( (response) => {
       console.log(response);
    });
}


//this gives a 500 internal server error and  TypeError: "NetworkError when attempting to fetch resource."

const post = async (title, message, author, id) => {

    const location = "http://menu.com/menu/api/post/create.php";

    const settings = {
        method: 'POST',
        headers: new Headers({
            'Accept' : 'application/json',
            'Content-Type': 'application/json'
        }),
        body: JSON.stringify({
            'title' : title,
            'body' : message,
            'author' : author,
            'category_id' : id
        })
    };

    try {
        const response = await fetch(location, settings);
        const json = await response.json();
        console.log(json);
        return json;
    } catch (error) {
        console.log(error);
        return error;
    }
}

在此Works中出现相同的500个内部服务器错误之前，我的apache服务器中的errorLog是我现在在异步发布函数中遇到的相同错误-

[Sun Feb 17 18:21:11.122109 2019] [php7:warn] [pid 890] [client 127.0.0.1:37548] PHP Warning: Header may not contain more than a single header, new line detected in /home/orpheus/Practice_dev/menu/api/post/create.php on line 7

[Sun Feb 17 18:21:11.122452 2019] [php7:notice] [pid 890] [client 127.0.0.1:37548] PHP Notice: Trying to get property 'title' of non-object in /home/orpheus/Practice_dev/menu/api/post/create.php on line 22

[Sun Feb 17 18:21:11.122471 2019] [php7:notice] [pid 890] [client 127.0.0.1:37548] PHP Notice: Trying to get property 'body' of non-object in /home/orpheus/Practice_dev/menu/api/post/create.php on line 23

[Sun Feb 17 18:21:11.122477 2019] [php7:notice] [pid 890] [client 127.0.0.1:37548] PHP Notice: Trying to get property 'author' of non-object in /home/orpheus/Practice_dev/menu/api/post/create.php on line 24

[Sun Feb 17 18:21:11.122482 2019] [php7:notice] [pid 890] [client 127.0.0.1:37548] PHP Notice: Trying to get property 'category_id' of non-object in /home/orpheus/Practice_dev/menu/api/post/create.php on line 25

[Sun Feb 17 18:21:11.122743 2019] [php7:error] [pid 890] [client 127.0.0.1:37548] PHP Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 1366 Incorrect integer value: '' for column 'category_id' at row 1 in /home/orpheu$

这个问题不是我的php代码中的问题，而是与我的提取请求有关，我通过向请求中添加新的Headers（）来解决了该问题，并且它可以正常工作。 因此，我确定问题在于我如何调用异步post（）函数，但我不知道要更改什么。

编辑-

这些是我在create.php中的头文件。 他们接受内容类型-application / json，所以我不确定为什么不能在没有错误的情况下将其添加到我的ajax请求中

header('Access-Control-Allow-Origin: *');
  header('Content-Type: application/json');
  header('Access-Control-Allow-Methods: POST, OPTIONS');
  header("Access-Control-Max-Age: 3600");
  header('Access-Control-Allow-Headers: Access-Control-Allow-Headers,Content-Type,Access-Control-Allow-Methods, 
  Authorization, X-Requested-With, Content-Type, Authorization');

Answer 1

通过从新标题中删除“ Accept”：“ application / json”，“ Content-Type”：“ application / json”来解决此问题。 这就是我在php标头中接受的内容，但是以某种方式在获取帖子中使用时会导致500内部服务器错误。