blocks|key|509531|text|根据Adobe，您似乎面临的不是JSON问题，而是套接字限制。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|509532|您可以通过writeUTF和readUTF通过套接字发送的字符串限制为65,535字节。这是因为字符串以16位无符号整数而不是以null结尾的字符串为前缀。|style|BOLD|509533|entityMap|0|LINK|mutability|MUTABLE|url|http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/net/Socket.html#readUTF%2528%2529^0|0|7|0|0|W|B|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@$A|U|B|V|F|G]]|9|@]|C|$]]|$1|H|3|-4|5|6|7|W|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]]]

<a href="http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/net/Socket.html#readUTF%28%29" rel="nofollow">According to Adobe</a>, it appears that you are not facing a JSON problem but instead a Socket limitation. 

A String you may send over a Socket via writeUTF and readUTF is limited by 65,535 bytes. This is due to the string being prepended with a 16 bit unsigned integer rather than a null terminated string.

blocks|key|509572|text|我也有同样的问题。问题在于Flash应用程序从套接字读取数据。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|509573|关键是，即使服务器没有发送所有的数据，并且留下了一些东西(特别是当数据很大，连接很慢时)，Flash事件也会触发。因此，像{"key":"value"}这样的东西有两个(或更多)部分，比如：{"key":"val和ue"}。另外，有时您可能会在一条消息中收到几个连接的JSON，比如{"json1key":"value"}{"json2key":"value"}内置的Flash解析器也无法处理这些。|offset|length|style|BOLD|509574|为了避免这种情况，我建议您修改Flash中的SocketData处理程序，为接收到的字符串添加一个缓存。如下所示：|509575|//+declaring+vars
private+var+_socket:Socket;
private+var+_cache:+String+=+"";

//+adding+EventListener
_socket.addEventListener(ProgressEvent.SOCKET_DATA,+onSocketData);

private+function+onSocketData(e:+Event):void
{
++++//+take+the+incoming+data+from+socket
++++var+fromServer:+ByteArray+=+new+ByteArray;
++++while+(_socket.bytesAvailable)
++++{
++++++++_socket.readBytes(fromServer);
++++}

++++var+receivedToString:+String+=+fromServer.toString();
++++_cache+%2B=+receivedToString;

++++if+(receivedToString.length+==+0)+return;+++//+nothing+to+parse

++++//+convert+that+long+string+to+the+Vector+of+JSONs
++++//+here+is+very+small+and+not+fail-safe+alghoritm+of+detecting+separate+JSONs+in+one+long+String
++++var+jsonPart:+String+=+"";
++++var+jsonVector:+Vector.<String>+=+new+Vector.<String>;
++++var+bracketsCount:+int+=+0;
++++var+endOfLastJson:+int+=+0;

++++for+(var+i:+int+=+0;+i+<+_cache.length;+i%2B%2B)
++++{
++++++++if+(_cache.charAt(i)+==+"{")+bracketsCount+%2B=+1;
++++++++if+(bracketsCount+>+0)+jsonPart+=+jsonPart.concat(_cache.charAt(i));
++++++++if+(_cache.charAt(i)+==+"}")
++++++++{
++++++++++++bracketsCount+-=+1;
++++++++++++if+(bracketsCount+==+0)
++++++++++++{
++++++++++++++++jsonVector.push(jsonPart);
++++++++++++++++jsonPart+=+"";
++++++++++++++++endOfLastJson+=+i;
++++++++++++}
++++++++}
++++}

++++//+removing+part+that+isn't+needed+anymore+
++++if+(jsonVector.length+>+0)
++++{
++++++++_cache+=+_cache.substr(endOfLastJson+%2B+1);
++++}

++++for+each+(var+part:+String+in+jsonVector)
++++{
++++++++trace("RECEIVED:+"+%2B+part);+//+voila!+here+is+the+full+received+JSON
++++}
}|code-block|syntax|javascript|509576|entityMap^0|0|1P|F|2N|B|2Z|4|3X|14|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@$D|S|E|T|F|G]|$D|U|E|V|F|G]|$D|W|E|X|F|G]|$D|Y|E|Z|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|10|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|11|8|@]|9|@]|A|$M|N]]|$1|O|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|P|$]]

I had the same problem. The problem is in Flash app reading data from socket.

The point is that Flash ProgressEvent.SOCKET_DATA event fires even when server didn't send all the data, and something is left (especially when the data is big and the connection is slow).
So something like {"key":"value"} comes in two (or more) parts, like: {"key":"val and ue"}. Also sometimes you might receive several joined JSONs in one message like {"json1key":"value"}{"json2key":"value"} - built-in Flash JSON parser cannot handle these too.

To fight this I recommend you to modify your SocketData handler in the Flash app to add a cache for received strings. Like this:

<pre><code>// declaring vars
private var _socket:Socket;
private var _cache: String = "";

// adding EventListener
_socket.addEventListener(ProgressEvent.SOCKET_DATA, onSocketData);

private function onSocketData(e: Event):void
{
 // take the incoming data from socket
 var fromServer: ByteArray = new ByteArray;
 while (_socket.bytesAvailable)
 {
 _socket.readBytes(fromServer);
 }

 var receivedToString: String = fromServer.toString();
 _cache += receivedToString;

 if (receivedToString.length == 0) return; // nothing to parse

 // convert that long string to the Vector of JSONs
 // here is very small and not fail-safe alghoritm of detecting separate JSONs in one long String
 var jsonPart: String = "";
 var jsonVector: Vector.&lt;String&gt; = new Vector.&lt;String&gt;;
 var bracketsCount: int = 0;
 var endOfLastJson: int = 0;

 for (var i: int = 0; i &lt; _cache.length; i++)
 {
 if (_cache.charAt(i) == "{") bracketsCount += 1;
 if (bracketsCount &gt; 0) jsonPart = jsonPart.concat(_cache.charAt(i));
 if (_cache.charAt(i) == "}")
 {
 bracketsCount -= 1;
 if (bracketsCount == 0)
 {
 jsonVector.push(jsonPart);
 jsonPart = "";
 endOfLastJson = i;
 }
 }
 }

 // removing part that isn't needed anymore 
 if (jsonVector.length &gt; 0)
 {
 _cache = _cache.substr(endOfLastJson + 1);
 }

 for each (var part: String in jsonVector)
 {
 trace("RECEIVED: " + part); // voila! here is the full received JSON
 }
}
</code></pre>

I've written Socket Communication server with Java and a AIR programm with AS3, using Socket connection.
The communication through socket connection is done with JSON serialization.

Sometimes with really long JSON strungs over socket, AS3 code says that there is a JSON parse error.

Each JSON string I end with end string to let programm know, that it is not the end of the message, so this is not the problem with AIR programm reading the message in parts.

The error occurs only with realy long json string, for example, string with 78031 length. Is there any limits for JSON serialization?

Maximum as3 adobe JSON string length

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我用Java编写了Socket通信服务器，用AS3编写了AIR程序，使用套接字连接。通过套接字连接的通信是通过JSON序列化完成的。有时，在套接字上使用非常长的JSON字符串时，AS3代码会说存在一个JSON解析错误。每个JSON我以 end 字符串结尾，让编程人员知道它不是消息的结尾，所以这不是AIR程序读取消息的部...

问最大as3 adobe字符串长度
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