請(qǐng)幫我解決發(fā)布JSON解碼的表情符號(hào)的問(wèn)題.
我有一個(gè)UITextView,這個(gè)文本視圖可能有一個(gè)表情符號(hào)字符.我將數(shù)據(jù)發(fā)布到Web服務(wù)器,UITextView.text顯示為JSON,問(wèn)題是當(dāng)文本有表情符號(hào)時(shí),我無(wú)法獲取數(shù)據(jù).我所做的是：

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

然后我用

$post = json_decode($postData,true);

解碼數(shù)據(jù)并具有關(guān)聯(lián)數(shù)組并將數(shù)據(jù)插入數(shù)據(jù)庫(kù).

這是我將數(shù)據(jù)插入數(shù)據(jù)庫(kù)時(shí)??的代碼段.

$postData = file_get_contents("php://input");
//$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);

沒(méi)有找到表情符號(hào)字符,它工作正常.沒(méi)問(wèn)題.問(wèn)題是當(dāng)找到表情符號(hào)字符時(shí),$post(解碼數(shù)據(jù))中的數(shù)據(jù)為空.

我試圖使用虛擬數(shù)據(jù)(代碼片段中的第2行)

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

我成功地將表情符號(hào)字符插入數(shù)據(jù)庫(kù)中.我不知道為什么但是當(dāng)數(shù)據(jù)來(lái)自設(shè)備時(shí)它不同工作($postData = file_get_contents(“php：// input”))

這就是我在客戶端編碼和發(fā)布數(shù)據(jù)的方式.

    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,誰(shuí)制作了這些表情符號(hào)字符？他毀了我的命！

解決方法:

一旦將數(shù)據(jù)發(fā)送到您的php腳本,您需要將其轉(zhuǎn)換為多字節(jié)字符串：

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

你可以使用這個(gè)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;
}

編輯：數(shù)據(jù)可能是我們的類型application / x-www-form-urlencoded并且該函數(shù)正確轉(zhuǎn)換了它.