表情符号到JSON编码，发布到Web服务器 [英] Emoji to JSON encoded, post to web server

问题描述

请帮我解决发布JSON解码的表情符号问题。
我有一个UITextView，这个文本视图可能有一个表情符号。我将数据发布到一个Web服务器，其中UITextView.text呈现为JSON，问题是当文本有一个表情符号时，我无法获取数据。我做的是：

Please help me with my problem in posting a JSON decoded emoji character. I have a UITextView, this text view may have a emoji character. I am posting the data to a web server with the UITextView.text presented as JSON, the problem is when the text has a an emoji, I am not able to get the data. What I do is:

$postData = file_get_contents("php://input") to get the data.

然后我使用

$post = json_decode($postData,true);

解码数据，并具有assoc数组，并将数据插入数据库。

to decode the data and have a assoc array and insert the data in database.

当我将数据插入数据库时​​，这里是一个代码片段。

here is a code snippet when I insert my data into database.

$postData = file_get_contents("php://input");
//$postData = '{"body":"characters here ","subject":"subject here","username":"janus","from_id":"185","to_id":"62"}';
    $post = json_decode($postData,true);
        $data=array(
                'user_id_from'=>mysql_real_escape_string($post['from_id']),
                'user_id_to'=>mysql_real_escape_string($post['to_id']),
                'subject'=>mysql_real_escape_string($post['subject']),
                'message'=>mysql_real_escape_string($post['body']));

                $messages_obj->insert($data);

没有找到表情符号，它工作正常。没问题。问题是当发现表情符号时，$ post（解码数据）中的数据为空。

Without an emoji character found, it works fine. no problem. the problem is when an emoji character found, the data in $post (decoded data) is null.

我试图使用虚拟数据（代码片段中的第2行） / p>

I tried to use dummy data (line 2 in code snippet)

//$postData = '{"body":"characters here ","subject":"subject here","username":"janus","from_id":"185","to_id":"62"}';

我成功地将表情符号插入到数据库中。我不知道为什么，但是当数据来自设备时，它不工作（$ postData = file_get_contents（php：// input））

and I succesfully inserted the emoji characters in database. I dont know why but It dont work the same when the data is from the device ($postData = file_get_contents("php://input"))

这是怎么回事我编码并在客户端发布我的数据。

This is how I encode and post my data in client.

    NSMutableDictionary *messageDetails = [[NSMutableDictionary alloc] init];
[messageDetails setObject:[loginItems objectForKey:@"user_id"] forKey:@"from_id"];
[messageDetails setObject:recipientID forKey:@"to_id"];
[messageDetails setObject:@"subject here" forKey:@"subject"];
[messageDetails setObject:newMessageField.text forKey:@"body"];
    [messageDetails setObject:[loginItems objectForKey:@"username"] forKey:@"username"];


NSString *strPostData = [messageDetails JSONRepresentation];
[messageDetails release];

NSData *postData = [NSData dataWithBytes:[strPostData   UTF8String] length:[strPostData  length]];
[urlRequest setHTTPMethod:@"POST"];
[urlRequest setHTTPBody:postData];

BTW谁制作了这些表情符号？他破坏了我的生命！

BTW, who made these emoji characters? He is ruining my life!

推荐答案

将数据发送到您的php脚本后，需要将其转换为多字节字符串：

Once the data is sent to your php script you need to convert it to a multibyte string:

$content = mb_convert_encoding($content, 'UTF-8');

您可以使用此功能：

function cb($content){

  if(!mb_check_encoding($content, 'UTF-8')
   OR !($content === mb_convert_encoding(mb_convert_encoding($content, 'UTF-32', 'UTF-8' ), 'UTF-8', 'UTF-32'))) {

    $content = mb_convert_encoding($content, 'UTF-8');

  }
  return $content;
}

编辑：数据可能是application / x-www-form-为我们提供了urlencoded，该功能正确转换。

The data was probably of type application/x-www-form-urlencoded for us and that function converted it correctly.

这篇关于表情符号到JSON编码，发布到Web服务器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！