jQuery 无法识别 Symfony JSON？答案

【问题标题】：jQuery not recognizing Symfony JSON?jQuery 无法识别 Symfony JSON？
【发布时间】：2011-06-13 09:36:54
【问题描述】：

我正在尝试从 Symfony 获取我的 JSON 数据，但它似乎无法正常工作。下面是symfony代码的sn-p：

$this->getResponse()->setHttpHeader('Content-Type', 'application/json; charset=utf-8');
return $this->renderPartial('listJsonResponse', 
array('jsonSlots' => json_encode($this->jsonQuery)));

上面的工作正常并且击中了部分。我的部分内容是这样的：

<?php echo $jsonSlots ?>

现在根据 Firebug，这会正确填充。以下是回复的副本

[{"id":"1","schedule_day":"Mon","start_time":"09:00:00","concurrent_appointments":"2","currentCount":"2"}, {"id":"2","schedule_day":"Mon","start_time":"09:15:00","concurrent_appointments":"2","currentCount":"0"},{"id" :"3","schedule_day":"Mon","start_time":"09:30:00","concurrent_appointments":"2","currentCount":"0"},{"id":"4" ,"schedule_day":"Mon","start_time":"09:45:00","concurrent_appointments":"2","currentCount":"0"},{"id":"5","schedule_day" :"Mon","start_time":"10:00:00","concurrent_appointments":"2","currentCount":"0"},{"id":"6","schedule_day":"Mon" ,"start_time":"10:15:00","concurrent_appointments":"2","currentCount":"0"},{"id":"7","schedule_day":"Mon","start_time" :"10:30:00","concurrent_appointments":"2","currentCount":"0"},{"id":"8","schedule_day":"Mon","start_time":"10: 45:00","concurrent_appointments":"2","currentCount":"0"},{"id":"9","schedule_day":"Mon","start_time":"11:00:00" ,"concurrent_appointments":"2","currentCount":"0"},{"id":"10","schedule_day":"Mon","start_time":"11:15 :00","concurrent_appointments":"2","currentCount":"0"},{"id":"11","schedule_day":"Mon","start_time":"11:30:00", "concurrent_appointments":"2","currentCount":"0"},{"id":"12","schedule_day":"Mon","start_time":"11:45:00","concurrent_appointments": "2","currentCount":"0"},{"id":"13","schedule_day":"Mon","start_time":"12:00:00","concurrent_appointments":"2", "currentCount":"0"},{"id":"14","schedule_day":"Mon","start_time":"12:15:00","concurrent_appointments":"2","currentCount": "0"},{"id":"15","schedule_day":"Mon","start_time":"12:30:00","concurrent_appointments":"2","currentCount":"0"} ,{"id":"16","schedule_day":"Mon","start_time":"12:45:00","concurrent_appointments":"2","currentCount":"0"},{"id ":"17","schedule_day":"Mon","start_time":"13:00:00","concurrent_appointments":"2","currentCount":"0"},{"id":"18 ","schedule_day":"Mon","start_time":"13:15:00","concurrent_appointments":"2","currentCount":"0"},{"id":"19","schedule_day ":"Mon","start_time":"13:30:00","concurrent_appointments":"2","currentCou nt":"0"},{"id":"20","schedule_day":"Mon","start_time":"13:45:00","concurrent_appointments":"2","currentCount":" 0"},{"id":"21","schedule_day":"Mon","start_time":"14:00:00","concurrent_appointments":"2","currentCount":"0"}, {"id":"22","schedule_day":"Mon","start_time":"14:15:00","concurrent_appointments":"2","currentCount":"0"},{"id" :"23","schedule_day":"Mon","start_time":"14:30:00","concurrent_appointments":"2","currentCount":"0"},{"id":"24" ,"schedule_day":"Mon","start_time":"14:45:00","concurrent_appointments":"2","currentCount":"0"},{"id":"25","schedule_day" :"Mon","start_time":"15:00:00","concurrent_appointments":"2","currentCount":"0"},{"id":"26","schedule_day":"Mon" ,"start_time":"15:15:00","concurrent_appointments":"2","currentCount":"0"},{"id":"27","schedule_day":"Mon","start_time" :"15:30:00","concurrent_appointments":"2","currentCount":"0"},{"id":"28","schedule_day":"Mon","start_time":"15: 45:00","concurrent_appointments":"2","currentCount":"0"},{"id":"29","schedule_day":"Mon","star t_time":"16:00:00","concurrent_appointments":"2","currentCount":"0"},{"id":"30","schedule_day":"Mon","start_time":" 16:15:00","concurrent_appointments":"2","currentCount":"0"},{"id":"31","schedule_day":"Mon","start_time":"16:30: 00","concurrent_appointments":"2","currentCount":"0"},{"id":"32","schedule_day":"Mon","start_time":"16:45:00"," concurrent_appointments":"2","currentCount":"0"},{"id":"33","schedule_day":"Mon","start_time":"17:00:00","concurrent_appointments":" 2","currentCount":"0"},{"id":"34","schedule_day":"Mon","start_time":"17:15:00","concurrent_appointments":"2"," currentCount":"0"},{"id":"35","schedule_day":"Mon","start_time":"17:30:00","concurrent_appointments":"2","currentCount":" 0"},{"id":"36","schedule_day":"Mon","start_time":"17:45:00","concurrent_appointments":"2","currentCount":"0"}]

请注意，如果我取出 Content/Type 标头，它会略有变化。我得到与上面相同的响应选项卡，但还有一个将上述内容解析为 html 的 html 选项卡。显示如下：

[{"id":"1","schedule_day":"Mon","start_time":"09:00:00","concurrent_appointments":"2","currentCount":"2"}, {"id":"2","schedule_day":"Mon","start_time":"09:15:00","concurrent_appointments":"2","currentCount":"0"},{"id" :"3","schedule_day":"Mon","start_time":"09:30:00","concurrent_appointments":"2","currentCount":"0"},{"id":"4" ,"schedule_day":"Mon","start_time":"09:45:00","concurrent_appointments":"2","currentCount":"0"},{"id":"5","schedule_day" :"Mon","start_time":"10:00:00","concurrent_appointments":"2","currentCount":"0"},{"id":"6","schedule_day":"Mon" ,"start_time":"10:15:00","concurrent_appointments":"2","currentCount":"0"},{"id":"7","schedule_day":"Mon","start_time" :"10:30:00","concurrent_appointments":"2","currentCount":"0"},{"id":"8","schedule_day":"Mon","start_time":"10: 45:00","concurrent_appointments":"2","currentCount":"0"},{"id":"9","schedule_day":"Mon","start_time":"11:00:00" ,"concurrent_appointments":"2","currentCount":"0"},{"id":"10","schedule_day":"Mon","start_time":"11:15 :00","concurrent_appointments":"2","currentCount":"0"},{"id":"11","schedule_day":"Mon","start_time":"11:30:00", "concurrent_appointments":"2","currentCount":"0"},{"id":"12","schedule_day":"Mon","start_time":"11:45:00","concurrent_appointments": "2","currentCount":"0"},{"id":"13","schedule_day":"Mon","start_time":"12:00:00","concurrent_appointments":"2", "currentCount":"0"},{"id":"14","schedule_day":"Mon","start_time":"12:15:00","concurrent_appointments":"2","currentCount": "0"},{"id":"15","schedule_day":"Mon","start_time":"12:30:00","concurrent_appointments":"2","currentCount":"0"} ,{"id":"16","schedule_day":"Mon","start_time":"12:45:00","concurrent_appointments":"2","currentCount":"0"},{"id ":"17","schedule_day":"Mon","start_time":"13:00:00","concurrent_appointments":"2","currentCount":"0"},{"id":"18 ","schedule_day":"Mon","start_time":"13:15:00","concurrent_appointments":"2","currentCount":"0"},{"id":"19","schedule_day ":"Mon","start_time":"13:30:00","concurrent_appointments":"2","currentCou nt":"0"},{"id":"20","schedule_day":"Mon","start_time":"13:45:00","concurrent_appointments":"2","currentCount":" 0"},{"id":"21","schedule_day":"Mon","start_time":"14:00:00","concurrent_appointments":"2","currentCount":"0"}, {"id":"22","schedule_day":"Mon","start_time":"14:15:00","concurrent_appointments":"2","currentCount":"0"},{"id" :"23","schedule_day":"Mon","start_time":"14:30:00","concurrent_appointments":"2","currentCount":"0"},{"id":"24" ,"schedule_day":"Mon","start_time":"14:45:00","concurrent_appointments":"2","currentCount":"0"},{"id":"25","schedule_day" :"Mon","start_time":"15:00:00","concurrent_appointments":"2","currentCount":"0"},{"id":"26","schedule_day":"Mon" ,"start_time":"15:15:00","concurrent_appointments":"2","currentCount":"0"},{"id":"27","schedule_day":"Mon","start_time" :"15:30:00","concurrent_appointments":"2","currentCount":"0"},{"id":"28","schedule_day":"Mon","start_time":"15: 45:00","concurrent_appointments":"2","currentCount":"0"},{"id":"29","schedule_day":"Mon","star t_time":"16:00:00","concurrent_appointments":"2","currentCount":"0"},{"id":"30","schedule_day":"Mon","start_time":" 16:15:00","concurrent_appointments":"2","currentCount":"0"},{"id":"31","schedule_day":"Mon","start_time":"16:30: 00","concurrent_appointments":"2","currentCount":"0"},{"id":"32","schedule_day":"Mon","start_time":"16:45:00"," concurrent_appointments":"2","currentCount":"0"},{"id":"33","schedule_day":"Mon","start_time":"17:00:00","concurrent_appointments":" 2","currentCount":"0"},{"id":"34","schedule_day":"Mon","start_time":"17:15:00","concurrent_appointments":"2"," currentCount":"0"},{"id":"35","schedule_day":"Mon","start_time":"17:30:00","concurrent_appointments":"2","currentCount":" 0"},{"id":"36","schedule_day":"Mon","start_time":"17:45:00","concurrent_appointments":"2","currentCount":"0"}]

我知道 JSON 函数正在运行，但它没有解析成功函数并提醒我任何类型的数据。 JavaScript 如下所示，并包含在 jquery 就绪标签中

$.getJSON('/frontend_dev.php/module/listJSONSlots', function(data) {
    alert(data);
});

任何想法为什么我无法收到警报？

【问题讨论】：

我不了解 Synfony 及其 renderPartial 方法。但很明显，它用 &... 等价物替换了特殊字符。您应该寻找一种方法来禁用它。
这显然是一个问题。如果您可以将此作为答案发布，我将很乐意接受。我使用了 Symfony 的 renderText() 属性而不是它，它起作用了:)

标签： php jquery json symfony1

【解决方案1】：

您不需要渲染模板，您可以跳过它并直接从您的操作中返回一些内容。试试这个：

return $this->renderText(json_encode($this->jsonQuery));

【讨论】：

我试图做同样的事情，但来自一个组件 - 收到一个错误，即未定义 renderText 方法 ....
动作中只有 renderText，必须在组件中渲染模板。如果您需要变量的原始（未转义）值，请使用$sf_data->getRaw("varname")。
您忘记将 Content-Type 设置为 application/json。

【解决方案2】：

你需要的是修改你的部分

<?php $sf_data->getRaw('jsonSlots'); ?>

或从动作中使用更简单的方法

$this->getResponse()->setHttpHeader('Content-Type', 'application/json; charset=utf-8');
$this->renderText(json_encode($this->jsonQuery));

【讨论】：

【解决方案3】：

尝试json_encode($input, true) 强制将其编码为对象。

从技术上讲，JSON 的顶级容器必须是一个对象（用{} 括起来）而不是一个数组（用[] 括起来）。

JSON 对象的属性值可以是数组，但数组不是 JSON 对象。

【讨论】：

不。试过这个和 JSON_FORCE_OBJECT。它确实稍微改变了语法，但警报仍然失败
不，这不是真的。顶层可以是数组：JSON 文本是序列化的对象或数组。来自JSON's RFC

【解决方案4】：

我不知道 Synfony 及其 renderPartial 方法。但很明显，它用&...; 等价物替换了特殊字符。您应该寻找一种方法来禁用它

【讨论】：