php - 将方法 nsdictionary 发布到 json 对象 iOS objective-c
<p><p>我正在尝试将字典数组发送到服务器，在此之前我正在转换为 json 格式</p>
<p>注意:- 服务器运行良好，我在 android 中的 friend 正在获取成功发布方法的响应和数据</p>
<p>下面是我的post方法代码:-</p>
<pre><code>NSError *error;
NSMutableDictionary *tvarns = [ init];
tvarns[@"order_cart"]=_order_cart;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:tvarns
options:NSJSONWritingPrettyPrinted error:&error];
NSLog(@"%@",jsonData);
NSString* order_cart;
order_cart = [ initWithData:jsonData encoding:NSUTF8StringEncoding];
NSLog(@"%@",order_cart);
NSString *post = ;
NSData *postData = ;
//Next up, we read the postData's length, so we can pass it along in the request.
NSString *postLength = ];
// Now that we have what we'd like to post, we can create an NSMutableURLRequest, and include our postData
NSMutableURLRequest *request = [ init];
];
;
;
;
NSLog(@"the data Details is %@", post);
// And finally, we can send our request, and read the reply by creating a new NSURLSession:
NSURLSession *session = ];
[[session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
NSString *requestReply = [ initWithData:data encoding:NSASCIIStringEncoding]; // this is json string
NSLog(@"Reply = %@", requestReply);
// NSError *error;
NSDictionary *jsonDict = ; // you need to convert to dictionary object
NSLog(@"requestReply: %@", jsonDict);
}] resume];
;
}
</code></pre>
<p>服务器想要的值是</p>
<pre><code>{"order_cart":[{"customer_id":"114","item_id":14,"_id":"591d3822f55e2270202d8ff1","item_name":"Bira White","item_quantity":"2","price":"180.0","qr_code":"table21","phone":"7008841769","customer_name":"Samanthaa"},{"customer_id":"114","item_id":15,"_id":"591d3822f55e2270202d8ff0","item_name":"Bira Blonde","item_quantity":"2","price":"200.0","qr_code":"table21","phone":"7008841769","customer_name":"Samanthaa"}]}
</code></pre>
<p>我的 nslog 是</p>
<pre><code>2017-06-28 16:16:41.334 Barebones the data Details is {
"order_cart" : [
{
"phone" : "9047038606",
"item_quantity" : "7",
"qr_code" : "table21",
"item_name" : "Bottled Water",
"price" : "175",
"customer_id" : "116",
"customer_name" : "Akshay"
},
{
"phone" : "9047038606",
"item_quantity" : "2",
"qr_code" : "table21",
"item_name" : "Fresh Lime Soda(Sweet, Salt, Plain)",
"price" : "158",
"customer_id" : "116",
"customer_name" : "Akshay"
},
{
"phone" : "9047038606",
"item_quantity" : "2",
"qr_code" : "table21",
"item_name" : "Bottled Water",
"price" : "50",
"customer_id" : "116",
"customer_name" : "Akshay"
},
{
"phone" : "9047038606",
"item_quantity" : "2",
"_id" : "591d3822f55e2270202d8ff0",
"item_name" : "Bira Blonde",
"price" : "86",
"qr_code" : "table21",
"customer_id" : "116",
"item_id" : "3971",
"customer_name" : "Akshay"
},
{
"phone" : "9047038606",
"item_quantity" : "1",
"qr_code" : "table21",
"item_name" : "Bottled Water",
"price" : "25",
"customer_id" : "116",
"customer_name" : "Akshay"
}
]
}
2017-06-28 16:16:41.485 Barebones Reply = {"order_id":3961,"success":1}
<script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js'>. </script>
<script>
var data_array='{"source":{"name":"Kre8Tives","id":"SJQ6kyA1","order_id":"3961"},"customer":{"firstname":"","mobile":""},"tabType":"table","tabId":"591d3790498782970be66302","tableNumber":"1","items":null}';
alert(data_array);
var settings = {
'async': true,
'crossDomain': true,
'url': 'http://posistapi.com/api/v1/table_order/push?customer_key=8c982f5e9ef091e9d5c8fb142311b49a68049b102de5e0987ebce29755c454227fbc7573c7da4199f126524a3ac7a39a&tabtype=table',
'method': 'POST',
'headers': {
'postman-token': 'e200ae19-d083-a98a-6db3-53fc2f8bd73f',
'cache-control': 'no-cache',
'authorization': 'Basic ',
'content-type': 'application/json'
},
'processData': false,
'data': data_array,
'acceptUrl':'http://test.kre8tives.com/barebon/order_confirm.php',
'rejectUrl':'http://test.kre8tives.com/barebon/order_confirm.php',
'billPrintUrl':'http://test.kre8tives.com/barebon/order_confirm.php'
}
$.ajax(settings).done(function (response) {
console.log(response);
});
</script>
2017-06-28 16:16:41.486 Barebones requestReply: (null)
</code></pre>
<p>我已转换为所需的儿子格式，但仍然没有收到服务器的回复</p>
<p>即使我发送返回我从服务器发送的数据，我也会得到空值!!为什么会这样？？？提前谢谢!!:)</p>
<p>这是我的 PHP 代码</p>
<pre><code><?php
include('order-function.php');
if($_SERVER["REQUEST_METHOD"] == "POST")
{
$order_cart=$_POST['order_cart'];
$items=json_decode($order_cart,true);
include('dbconfig.php');
$response = array();
try
{
$total_item_price=0;
foreach ($items['order_cart'] as $item) { //['order_cart']
$customer_id=$item['customer_id'];
$customer_name=$item['customer_name'];
$phone=$item['phone'];
$_id=$item['_id'];
$item_name=$item['item_name'];
$item_quantity=$item['item_quantity'];
$price=$item['price'];
$qr_code=$item['qr_code'];
$products[]=array(
"_id"=>"$_id",
"item_name"=> $item_name,
"item_price"=> $price,
"item_quantity"=> $item_quantity
);
$price_new+=$price;
$item_push[]=array(
"id"=>"$_id",
"rate"=> $price,
"quantity"=> $item_quantity
);
}
$product_details=json_encode($products);
$add_to_cart = "INSERT INTO order_cart (customer_id,product_details,order_amount,qr_code) VALUES ('$customer_id','$product_details','$price_new','$qr_code')";
$result = mysqli_query($conn,$add_to_cart);
$order_id=mysqli_insert_id($conn);
if ($result) {
$data['source']=array("name"=>"Kre8Tives",
"id"=>"SJQ6kyA1",
"order_id"=>"$order_id"
);
$data['customer']=array(
"firstname"=>"$customer_name",
"mobile"=>"$phone"
);
$data['tabType']= "table";
$data['tabId']= "591d3790498782970be66302";
$data['tableNumber']= "1";
//items
$data_one=json_encode($item_push,JSON_NUMERIC_CHECK);
$data_new=json_decode($data_one);
$data['items']=$data_new;
$data_item=json_encode($data);
$response["order_id"] = $order_id;
$response["success"] = 1;
// print_r(json_encode($data));die;
} else {
$response["success"] = 0;
}
echo json_encode($response);
push_order($data_item);
}
catch(Exception $e)
{
$response["success"] = 0;
$response["message"] = "error occured";
}
}
?>
</code></pre></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>坦率地说，查看您的 <code>NSLog</code> 结果，看起来服务器代码在 JSON 结果之后错误地返回了一些额外的 HTML(从 <code><script></code> 行开始) .查看 <code>$response</code> 的正文，它报告成功，但看起来响应中包含了一些额外的文本，可能是 <code>push_order</code> 的结果，或者是一些 HTML在 <code>%></code> 之后，或者插入一些额外 HTML 的一些 Web 服务错误。</p>
<p>关注您的客户端请求代码，它应该设置 <code>Content-Type</code> 和 <code>Accept</code>header ，但这并不重要。但是设计良好的请求应该这样做。关键问题是 PHP 在输出 JSON 之前或之后应该不输出任何其他内容。</p>
<p>对于它的值(value)，如果您的 Web 服务期待一个真正的 JSON 请求，我会建议对您的客户端代码进行一系列简化(除了设置这两个额外的 header 之外)。例如，只需将 <code>NSJSONSerialization</code> 的输出作为 <code>httpBody</code> 发送；不要拿那个<code>NSData</code>，把它转换成一个<code>NSString</code>，然后再把它转换回一个<code>NSData</code>。只需发送 <code>jsonData</code> 作为 <code>httpBody</code>:</p>
<pre><code>NSDictionary *tvarns = @{@"order_cart": _order_cart};
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:tvarns
options:0
error:&error];
// if you want to see the JSON, you can do this, but this is not needed
//
// NSString *order_cart = [ initWithData:jsonData encoding:NSUTF8StringEncoding];
// NSLog(@"%@",order_cart);
// none of this stuff is needed; at worst, it can introduce encoding problems; at best, it's inefficient to do all that stuff
//
// NSString *post = ;
// NSLog(@"the data Details is %@", post);
// NSData *postData = ;
// //Next up, we read the postData's length, so we can pass it along in the request.
// NSString *postLength = ];
// Now that we have what we'd like to post, we can create an NSMutableURLRequest, and include our jsonData
NSMutableURLRequest *request = [ init];
];
;
// you don't need this, because NSURLSession sets the length for you
//
// ;
// use the original jsonData here
;
// you should, if you're a good web-service citizen, set the header; it's not always needed, but it's advisable
// tell the server that you're sending JSON request
;
// tell the server that you're expecting JSON response
;
// Unless you need a new session for some reason, it's better to use the shared session
NSURLSession *session = ;
[[session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if (error) {
NSLog(@"error: %@", error);
}
if (!data) {
return;
}
NSError *parseError;
NSDictionary *jsonDict = ; // you need to convert to dictionary object
if (jsonDict) {
NSLog(@"requestReply: %@", jsonDict);
} else {
NSLog(@"parseError: %@", parseError);
NSLog(@"response: %@", response); // when you have failure, it's sometimes useful to see what this says
NSString *requestReply = [ initWithData:data encoding:NSUTF8StringEncoding]; // this is json string
NSLog(@"requestReply: %@", requestReply);
}
}] resume];
</code></pre>
<p>再次，在提出这些简化建议后，我真的怀疑服务器代码中存在错误，包括 <code><script>...</code> 之后的所有垃圾。我敢打赌，您的 Android 代码在响应结束时忽略了所有这些错误数据，而 <code>NSJSONSerialization</code> 正确指出响应在技术上不是格式正确的 JSON。 (顺便说一下，我上面的代码会正确记录 JSON 错误。)</p>
<hr/>
<p>查看您添加到修改后问题中的 PHP 代码，它正在抓取 <code>$order_cart=$_POST['order_cart'];</code>，这意味着您的 Web 服务需要一个 <code>x-www-form-urlencoded</code> 请求。然后，PHP 代码继续将 <code>$items</code> 定义为 <code>json_decode($order_cart,true)</code>，然后使用 <code>foreach</code> 迭代到 <code>$items[ 'order_cart']</code>。这意味着 Web 服务期待 <code>x-www-form-urlencoded</code> 请求，其与 <code>order_cart</code> 键关联的值本身就是一个由 <code>order_cart< 键控的 JSON 字典</code>(再次)，即请求正文将类似于 <code>order_cart={"order_cart":[...]}</code>。 </p>
<p>这不是一个非常优雅的设计，但如果你坚持这样做，你将不得不创建 <code>x-www-form-urlencoded</code> 请求，其键是 <code>order_cart</code> ，其值为 <code>{"content-type":[...]}</code> 形式的 JSON 字典的百分比编码表示。</p>
<pre><code>NSDictionary *tvarns = @{@"order_cart": _order_cart};
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:tvarns
options:0
error:&error];
NSString *jsonString = [ initWithData:jsonData encoding:NSUTF8StringEncoding];
NSString *bodyString = ];
NSMutableURLRequest *request = [ initWithURL:];
;
];
;
;
// Unless you need a new session for some reason, it's better to use the shared session
NSURLSession *session = ;
[[session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if (error) {
NSLog(@"error: %@", error);
}
if (!data) {
return;
}
NSError *parseError;
NSDictionary *jsonDict = ; // you need to convert to dictionary object
if (jsonDict) {
NSLog(@"requestReply: %@", jsonDict);
} else {
NSLog(@"parseError: %@", parseError);
NSLog(@"response: %@", response); // when you have failure, it's sometimes useful to see what this says
NSString *requestReply = [ initWithData:data encoding:NSUTF8StringEncoding]; // this is json string
NSLog(@"requestReply: %@", requestReply);
}
}] resume];
</code></pre>
<p>地点:</p>
<pre><code>@interface NSCharacterSet (URLQueryValue)
/**
Character set of characters allowed within value (or a key) in a application/x-www-form-urlencode key/value pair.
@return NSCharacterSet of allowed characters.
*/
+ (NSCharacterSet *) URLQueryValueAllowedCharacterSet;
@end
@implementation NSCharacterSet (URLQueryValue)
+ (NSCharacterSet *) URLQueryValueAllowedCharacterSet {
static NSString * const generalDelimitersToEncode = @":#[]@"; // does not include "?" or "/" due to RFC 3986 - Section 3.4
static NSString * const subDelimitersToEncode = @"!$&'()*+,;=";
NSString * const characterToEncode = ;
NSMutableCharacterSet *cs = [ mutableCopy];
;
return cs;
}
@end
</code></pre>
<p>和</p>
<pre><code>@interface NSString (URLQueryValue)
/**
String percent encoding for key or value in key/value pair within an application/x-www-form-urlencoded request.
@return Percent encoded string.
*/
- (NSString *)stringByAddingPercentEncodingQueryValue;
@end
@implementation NSString (URLQueryValue)
- (NSString *)stringByAddingPercentEncodingQueryValue {
return ];
}
@end
</code></pre>
<p>坦率地说，我建议更改 Web 服务以处理真正的 JSON 请求，而不是 <code>x-www-form-urlencoded</code> 请求中的 JSON。如果你这样做了，客户端代码看起来更像我上面的原始答案。但是对于您现有的 Web 服务代码，您需要创建类似于我的第二个代码示例的内容。</p></p>
<p style="font-size: 20px;">关于php - 将方法 nsdictionary 发布到 json 对象 iOSobjective-c ，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/44800588/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/44800588/
</a>
</p>
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