接收JSON解析错误在AJAX调用 [英] Receiving JSON Parse Error During AJAX Call
本文介绍了接收JSON解析错误在AJAX调用的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个是创造我的JSON需要我的web应用程序的PHP脚本。我使用jQuery的Ajax功能来从所创建的JSON我的PHP页面的JSON。我发现一个奇怪的怪癖，但。如果我只需运行我的PHP文件中的Web浏览器和输出的JSON，然后我复制到JSON文件名为 myJSON.json 这是与我的Ajax URL电话，我的code工作。但是，如果我直接在URL的Ajax调用链接到我的PHP文件，我得到以下错误： 请求的JSON解析失败 。因此，这里是我的相关PHP code：
＆LT; PHP
$ groupArray =阵列（）;
//设置JSON文件的开头
$ JSON ='
{
电子邮件：';
//循环请求结果
的foreach（$ contextIORequest-＆GT;的getData（）为$消息）{
//`date_received`是Unix时间。开始转换这对一个可读的日期，并将其转换成用户的时区
$ newTZ =新DateTimeZone（美国/芝加哥）; //这将根据在生产过程中的用户位置
$ currentTime的=新的日期时间（）;
$ currentTime的=日期时间:: createFromFormat（U，$消息['date_received']）;
$ currentTime-＆GT; setTimezone（$ newTZ）;
$ formattedDateReceived = $ currentTime-＆GT;格式（'FĴ，Y'）;
// JSON的结构是按日期（集团）主办。每一个独特的日期将被放置在自己的组中的JSON文件。因此，我们需要检查的日期已经在$ groupArray。如果是，则我们简单地将电子邮件数据添加到当前日期组。如果日期是不是已经在$ groupArray，那么我们就需要创建一个新组和电子邮件数据添加到新组。
如果（！in_array（$ formattedDateReceived，$ groupArray））{
//该日期是尚未在$ groupArray
//检查，如果这是第一批被添加到$ groupArray。如果是，第一组中加入需要不同格式比将添加所有其他组
如果（计数（$ groupArray）== 0）{
//这是被添加的第一组
$ JSON。='{
群：'$ formattedDateReceived。'
清单：[';
} 其他 {
//这不是第一组被添加。关闭previous集团和排行榜的对象，然后创建新的组和表对象。
//在结束前的previous集团和排行榜的对象，我们需要删除后面的逗号，从最后的名单的项目在previous组
$ JSON = RTRIM（$ JSON，，）;
//']'被关闭previous名单的对象。 }，正在关闭previous组对象
$ JSON。=']
}，{
群：'$ formattedDateReceived。'
清单：[';
}
//现在我们需要把这个日期添加到$ groupArray
$ groupArray [] = $ formattedDateReceived;
//电子邮件的身体就不能有转义引号或apostrophies。它也不能有换行符或单词之间的多个空格。
$身体=和addslashes（$信息[身体] [0] ['内容']）; //脱报价和apostrophies
$身体= str_replace函数（阵列（\ r \ N，\ N），，$机构）; //删除所有换行符导致身体的字符串是所有在同一行
$ newBody = preg_replace（'！\ S +'，''，$机构）; //删除单词之间的多个空格
//添加邮件到JSON结构
$ JSON。='
{
ID：，$消息['MESSAGE_ID'。'
主题：'.addslashes（$消息['主题']）。'
到：大卫·内斯特，简·史密斯]，
身：'$ newBody。'
时间：'$ formattedDateReceived。'
日期时间：'$ formattedDateReceived。'
从：，$消息['地址'] ['从'] ['名称']。'
DP：资产/ IMG /型材/ avatar.jpg
D pretina：资产/ IMG /型材/ avatar2x.jpg
};
//回声＆LT; H1＆gt;新建集团及LT; / H1＆gt;中;
//回声日期：$消息['date_received']（$ formattedString）\ N'LT; BR＆gt;中;
//回声从：。$消息['从'] ['地址'] [电子邮件]\ N'LT; BR＆gt;中;
//回声主题：$消息['主题']\ N'LT; BR＆gt;中;
//回声螺纹尺寸：$消息['thread_size']\ N'LT; BR＆gt;中;
//回声消息ID：$消息['MESSAGE_ID']\ N'LT; BR＆gt;中;
//回声标志：。$消息['国旗'] [0]\ N'LT; BR＆gt;中;
} 其他 {
//该日期是已经在$ groupArray
//电子邮件的身体就不能有转义引号或apostrophies。它也不能有换行符或单词之间的多个空格。
$身体=和addslashes（$信息[身体] [0] ['内容']）; //脱报价和apostrophies
$身体= str_replace函数（阵列（\ r \ N，\ N），，$机构）; //删除所有换行符导致身体的字符串是所有在同一行
$ newBody = preg_replace（'！\ S +'，''，$机构）; //删除单词之间的多个空格
//添加邮件到JSON结构
$ JSON。='
{
ID：，$消息['MESSAGE_ID'。'
主题：'.addslashes（$消息['主题']）。'
到：大卫·内斯特，简·史密斯]，
身：'$ newBody。'
时间：'$ formattedDateReceived。'
日期时间：'$ formattedDateReceived。'
从：，$消息['地址'] ['从'] ['名称']。'
DP：资产/ IMG /型材/ avatar.jpg
D pretina：资产/ IMG /型材/ avatar2x.jpg
};
}
} //结束foreach循环
//关闭前的最后集团和排行榜的对象，我们需要删除后面的逗号，从最后的名单项中的最后一个组
$ JSON = RTRIM（$ JSON，，）;
//完成JSON结构
$ JSON。=']
}
]
};
//输出的JSON
file_put_contents（'emails.json'，$ JSON）;
标题（内容类型：应用程序/ JSON;字符集= UTF-8）;
回声$ JSON;
？＆GT;
所以，如果我在Web浏览器中运行这个PHP文件，它输出的JSON。然后我复制并粘贴JSON成JSON文件。然后我我的AJAX调用链接到JSON文件，一切都正确分析。 但是我需要链接到，在我的AJAX调用创建JSON的PHP文件。但是，当我这样做，我得到即使它是完全一样的code我复制并粘贴在作品完美我的JSON文件解析错误。我真的难倒就这一个。这是我的有关AJAX code，以及：
$。阿贾克斯（{
数据类型：JSON，
网址：创造json.php
成功：功能（数据）{
$每个（data.emails，功能（我）{
VAR OBJ = data.emails [I]
VAR列表= obj.list;
$每个（列表中，函数（J）{
变量$此=列表[J]。
VAR ID = $ this.id;
}）;
}）;
}，
错误：函数（jqXHR，异常）{
如果（jqXHR.status === 0）{
警报（在不连接\ñ检查网络。）;
}否则，如果（jqXHR.status == 404）{
警报（'请求的页面未找到[404]'）;
}否则，如果（jqXHR.status == 500）{
警报（内部服务器错误[500]。'）;
}否则，如果（例外===parsererror'）{
警报（'要求JSON解析失败了。'）;
}否则，如果（例外==='超时'）{
警报（'超时错误。'）;
}否则，如果（例外==='中止'）{
警报（Ajax请求中止。'）;
} 其他 {
警报（未捕获的错误。\ n'+ jqXHR.responseText）;
}
}
}
解决方案
而不是试图从头开始创建一个JSON字符串，使用关联数组（键=>值）建立自己的数据结构，只是 json_en code（），它会为您节省格式化了不少麻烦。
另外请注意，此函数转义字符串为您服务。
修订code
$ groupArray =阵列（）;
$ JSON =阵列（'邮件'=＆GT;阵列（））;
的foreach（$ contextIORequest-＆GT;的getData（）为$消息）{
$ newTZ =新DateTimeZone（美国/芝加哥）;
$ currentTime的=新的日期时间（）;
$ currentTime的=日期时间:: createFromFormat（U，$消息['date_received']）;
$ currentTime-＆GT; setTimezone（$ newTZ）;
$ formattedDateReceived = $ currentTime-＆GT;格式（'FĴ，Y'）;
如果（！in_array（$ formattedDateReceived，$ groupArray））{
array_push（$ JSON ['邮件']，
阵列（
'组'=＆GT; $ formattedDateReceived，
名单'=＆GT;阵列（）
）
）;
$ groupArray [] = $ formattedDateReceived;
}
$身体= str_replace函数（阵列（\ r \ N，\ N），，$消息['身体'] [0] ['内容']）;
$ newBody = preg_replace（'！\ S +'，''，$机构）;
array_push（$ JSON ['邮件'] [array_search（$ formattedDateReceived，$ groupArray）] ['名单']，
阵列（
'ID'=＆GT; $消息['MESSAGE_ID']，
'主题'=＆GT;和addslashes（$消息['主题']），
'到'=＆GT;阵列（我），
身体=＆GT; $ newBody，
'时间'=＆GT; $ formattedDateReceived，
'日期时间'=＆GT; $ formattedDateReceived，
从'=＆GT; $消息['地址'] ['从'] ['名称']，
'DP'=＆GT; 资产/ IMG /型材/ avatar.jpg
'D pretina'=＆GT; 资产/ IMG /型材/ avatar2x.jpg
）
）;
} //结束foreach循环
//输出的JSON
标题（内容类型：应用程序/ JSON）;
回声json_en code（$ JSON）;
I have a PHP script that is creating my JSON needed for my web app. I am using jQuery's Ajax capabilities to fetch the JSON from my PHP page that is creating the JSON. I am finding a weird quirk though. If I simply run my PHP file in the web browser and output the JSON and then I copy that JSON into a file named myJSON.json which is linked to my Ajax URL call, my code works. However, If I link directly to my PHP file in the Ajax URL call, I get the following error: Requested JSON parse failed. So here is my relevant PHP Code:
<?php
$groupArray = array();
// Setup the beginning of the json file
$json = '
{
"emails": [';
// Loop through the request results
foreach ($contextIORequest->getData() as $message) {
// `date_received` is in Unix time. Begin converting this to a readable date and convert it to the users timezone
$newTZ = new DateTimeZone("America/Chicago"); // This will be based on the users location during production
$currentTime = new DateTime();
$currentTime = DateTime::createFromFormat('U', $message['date_received']);
$currentTime->setTimezone($newTZ);
$formattedDateReceived = $currentTime->format('F j, Y');
// The JSON structure is organized by date (group). Each unique date will be placed in its own group in the JSON file. So we need to check if a date is already in the $groupArray. If it is, then we simply add the email data to the current date group. If the date is not already in the $groupArray, then we will need to create a new group and add the email data to the new group.
if (!in_array($formattedDateReceived, $groupArray)) {
// This date is not yet in the $groupArray
// Check if this is the first group being added to the $groupArray. If it is, the first group added requires different formatting than all other groups that will be added
if (count($groupArray) == 0) {
// This is the first group being added
$json .= '{
"group": "'.$formattedDateReceived.'",
"list": [';
} else {
// This is not the first group being added. Close the previous "group" and "list" objects and then create new "group" and "list" objects.
// Before closing the previous "group" and "list" objects, we need to remove the trailing comma ',' from the last "list" item in the previous "group"
$json = rtrim($json, ',');
// ']' is closing the previous "list" object. '},' is closing the previous "group" object
$json .= ']
},{
"group": "'.$formattedDateReceived.'",
"list": [';
}
// Now we need to add this date to the $groupArray
$groupArray[] = $formattedDateReceived;
// The body of the email cannot have unescaped quotes or apostrophies. It also cannot have line breaks or multiple spaces between words.
$body = addslashes($message['body'][0]['content']); // Escapes quotes and apostrophies
$body = str_replace(array("\r\n","\n"),"", $body); // Removes all line breaks causing the body string to be all on one line
$newBody = preg_replace('!\s+!', ' ', $body); // Remove any multiple spaces between words
// Add the email to the JSON structure
$json .= '
{
"id": "'.$message['message_id'].'",
"subject": "'.addslashes($message['subject']).'",
"to": ["David Nester", "Jane Smith"],
"body": "'.$newBody.'",
"time": "'.$formattedDateReceived.'",
"datetime" : "'.$formattedDateReceived.'",
"from": "'.$message['addresses']['from']['name'].'",
"dp": "assets/img/profiles/avatar.jpg",
"dpRetina": "assets/img/profiles/avatar2x.jpg"
},';
// echo "<h1>New Group</h1>";
// echo "Date: ".$message['date_received']." ($formattedString)\n<br>";
// echo "From: ".$message['addresses']['from']['email']."\n<br>";
// echo "Subject: ".$message['subject']."\n<br>";
// echo "Thread Size: ".$message['thread_size']."\n<br>";
// echo "Message ID: ".$message['message_id']."\n<br>";
// echo "Flags: ".$message['flags'][0]."\n<br>";
} else {
// This date is already in the $groupArray
// The body of the email cannot have unescaped quotes or apostrophies. It also cannot have line breaks or multiple spaces between words.
$body = addslashes($message['body'][0]['content']); // Escapes quotes and apostrophies
$body = str_replace(array("\r\n","\n"),"", $body); // Removes all line breaks causing the body string to be all on one line
$newBody = preg_replace('!\s+!', ' ', $body); // Remove any multiple spaces between words
// Add the email to the JSON structure
$json .= '
{
"id": "'.$message['message_id'].'",
"subject": "'.addslashes($message['subject']).'",
"to": ["David Nester", "Jane Smith"],
"body": "'.$newBody.'",
"time": "'.$formattedDateReceived.'",
"datetime" : "'.$formattedDateReceived.'",
"from": "'.$message['addresses']['from']['name'].'",
"dp": "assets/img/profiles/avatar.jpg",
"dpRetina": "assets/img/profiles/avatar2x.jpg"
},';
}
} // end foreach loop
// Before closing the very last "group" and "list" objects, we need to remove the trailing comma ',' from the last "list" item in the last "group"
$json = rtrim($json, ',');
// Complete the JSON structure
$json .= ']
}
]
}';
// Output the JSON
file_put_contents('emails.json', $json);
header('Content-type: application/json; charset=utf-8');
echo $json;
?>
So if I run this PHP file in my web browser, it outputs the JSON. I then copied and pasted the JSON into a JSON file. I then link my AJAX call to the JSON file and everything is parsed correctly. But I need to link to the PHP file that creates the JSON in my AJAX call. However, when I do this, I get a parse error even though it is the exact same code I copied and pasted in my JSON file that works perfectly. I am really stumped on this one. Here is my relevant AJAX code as well:
$.ajax({
dataType: "json",
url: "create-json.php",
success: function(data) {
$.each(data.emails, function(i) {
var obj = data.emails[i];
var list = obj.list;
$.each(list, function(j) {
var $this = list[j];
var id = $this.id;
});
});
},
error: function(jqXHR, exception) {
if (jqXHR.status === 0) {
alert('Not connect.\n Verify Network.');
} else if (jqXHR.status == 404) {
alert('Requested page not found. [404]');
} else if (jqXHR.status == 500) {
alert('Internal Server Error [500].');
} else if (exception === 'parsererror') {
alert('Requested JSON parse failed.');
} else if (exception === 'timeout') {
alert('Time out error.');
} else if (exception === 'abort') {
alert('Ajax request aborted.');
} else {
alert('Uncaught Error.\n' + jqXHR.responseText);
}
}
}
解决方案
Instead of trying to create a JSON string from scratch, build your data structure using associative arrays (key => value), and just json_encode() it, it will save you a lot of trouble on formatting.
Also note that this function escapes strings for you.
Revised code
$groupArray = array();
$json = array( 'emails' => array() );
foreach ($contextIORequest->getData() as $message) {
$newTZ = new DateTimeZone("America/Chicago");
$currentTime = new DateTime();
$currentTime = DateTime::createFromFormat('U', $message['date_received']);
$currentTime->setTimezone($newTZ);
$formattedDateReceived = $currentTime->format('F j, Y');
if (!in_array($formattedDateReceived, $groupArray)) {
array_push( $json['emails'],
array(
'group' => $formattedDateReceived,
'list' => array()
)
);
$groupArray[] = $formattedDateReceived;
}
$body = str_replace(array("\r\n","\n"),"", $message['body'][0]['content']);
$newBody = preg_replace('!\s+!', ' ', $body);
array_push($json['emails'][array_search($formattedDateReceived,$groupArray)]['list'],
array(
'id' => $message['message_id'],
'subject'=> addslashes($message['subject']),
'to' => array("Me"),
'body' => $newBody,
'time' => $formattedDateReceived,
'datetime' => $formattedDateReceived,
'from' => $message['addresses']['from']['name'],
'dp' => "assets/img/profiles/avatar.jpg",
'dpRetina' => "assets/img/profiles/avatar2x.jpg"
)
);
} // end foreach loop
// Output the JSON
header('Content-Type: application/json');
echo json_encode($json);
这篇关于接收JSON解析错误在AJAX调用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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