使用ajax在服务器端恢复json时出错

I am trying to send json with ajax to php file for that I have tried below code

我正在尝试将带有ajax的json发送到php文件，因为我尝试了下面的代码

Using jquery

使用jquery

var dummyData = {'bob': 'foo', 'paul': 'dog'};
var ajaxRequest = $.ajax({
        url: "json_handler.php",
        type: "POST",
        contentType: "application/json; charset=utf-8",
        data: JSON.stringify(dummyData ),
        dataType: "json"
    });
    ajaxRequest.done(function (response, textStatus, jqXHR) {
        console.log(response + textStatus + jqXHR);
        alert('sd');
    });

    ajaxRequest.fail(function (e) {
        console.log(e);

    });

And i am just doing var_dump($_REQUEST) at json_handler.php and ajax request is keep failing and get nothing in response text

我只是在json_handler.php上做var_dump（$ _ REQUEST）而ajax请求一直在失败并且在响应文本中什么都没有

When i tried

我试过的时候

$json = file_get_contents('php://input');
var_dump($json);

I got the json but ajax request is still failing.

我得到了json但ajax请求仍然失败。

I have also tried to do this javascript and my code is below

我也尝试过这个javascript，我的代码如下

var httpRequest = new XMLHttpRequest();
httpRequest.onreadystatechange = stateHandler;
httpRequest.open("POST", "json_handler.php", true);
httpRequest.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
httpRequest.send( JSON.stringify(dummyData ));

Here is my console log

这是我的控制台日志

2 个解决方案

#1

See because your ajax is having dataType: "json" so it is expecting the response in json format which is like {key:value} or [{k:v}, {k:v}, ....] and you are not echoing any json structure so this is where your ajax is failing.

看看因为你的ajax有dataType：“json”所以它期待json格式的响应，就像{key：value}或[{k：v}，{k：v}，....]而你是不回显任何json结构，所以这是你的ajax失败的地方。

Seems to me you have to write it this way:

在我看来你必须这样写：

$json = file_get_contents('php://input');
echo json_encode($json);

2 个解决方案

#1

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