Flex中XMLSocket與Java中Socket通信，遇到的問題是，Java中的socket能夠接受到XMLSocket傳輸的數據，但是Flex并不能接受到從Java服務器傳輸的數據，從網上搜了好多資料，終于找到了原因，原來XMLSocket 接收到服務端下發的數據時，將連續放于接收緩沖區，直到接收到 "\0" 字節（字節內容為 ASCII 值 0），才認為接收完成，并調用相應的 onData 或 onXML 事件，因此，服務端若用 Java 編寫，并使用標準的 String 類族，則在發送數據結尾應手動加上 "\0"，同樣，當XMLSocket發送數據時，也會在數據的結尾自動加上"\0"。
我現在將我做的一個簡單的XMLSocket通信的例子貼出來跟大家共享一下，如果有什么不足的地方，還望大家批評指出，畢竟我也是flex初學者，呵呵！
Java應用程序代碼：
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public class XMLServerSocket {
private ServerSocket serverSocket;
private Socket socketin;
private BufferedReader br;
private PrintStream ps;
public static void main(String[] args) {
new XMLServerSocket();
}
private XMLServerSocket() {
try {
serverSocket = new ServerSocket(8800);
socketin = serverSocket.accept();
br = new BufferedReader(new InputStreamReader(socketin
.getInputStream()));
ps = new PrintStream(socketin.getOutputStream());
ps.println("Input EXIT for end\0");
ps.flush();
out("Input EXIT for end");
boolean done = false;
while (!done) {
String str = br.readLine();
if (str == null || (str.length() == 1 && str.charAt(0) == '\0')) {
done = true;
} else {
char first = str.charAt(0);
char tail = str.charAt(str.length() - 1);
if (first == '\0') {
str = str.substring(1);
}
if (tail == '\0') {
str = str.substring(0, str.length() - 2);
}
out(str);
ps.println(str + "\0");
if (str.trim().equals("EXIT")) {
done = true;
br.close();
}
}
}
} catch (Exception e) {
System.out.println(e.getMessage());
}
}
private void out(String str) {
System.out.println(str);
}
}
public class XMLServerSocket {
private ServerSocket serverSocket;
private Socket socketin;
private BufferedReader br;
private PrintStream ps;
public static void main(String[] args) {
new XMLServerSocket();
}
private XMLServerSocket() {
try {
serverSocket = new ServerSocket(8800);
socketin = serverSocket.accept();
br = new BufferedReader(new InputStreamReader(socketin
.getInputStream()));
ps = new PrintStream(socketin.getOutputStream());
ps.println("Input EXIT for end\0");
ps.flush();
out("Input EXIT for end");
boolean done = false;
while (!done) {
String str = br.readLine();
if (str == null || (str.length() == 1 && str.charAt(0) == '\0')) {
done = true;
} else {
char first = str.charAt(0);
char tail = str.charAt(str.length() - 1);
if (first == '\0') {
str = str.substring(1);
}
if (tail == '\0') {
str = str.substring(0, str.length() - 2);
}
out(str);
ps.println(str + "\0");
if (str.trim().equals("EXIT")) {
done = true;
br.close();
}
}
}
} catch (Exception e) {
System.out.println(e.getMessage());
}
}
private void out(String str) {
System.out.println(str);
}
}
Flex程序代碼：
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<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx=" <mx:Script>
<!--[CDATA[
private var xmlconnect:XMLSocket;
private function connectServer():void
{
try{
xmlconnect = new XMLSocket();
xmlconnect.connect("localhost",8800);
xmlconnect.addEventListener(DataEvent.DATA,onData);
}
catch(e:Error)
{
trace(e.message);
}
}
private function onData(event:DataEvent):void
{
content.text = event.text;
}
private function sendData():void
{
xmlconnect.send(datasend.text + "\n");//必須加上"\n"，否則數據不能成功發送
}
]]-->
</mx:Script>
<mx:Text id="content" width="271" height="116" horizontalCenter="0" verticalCenter="0" />
<mx:TextInput id="datasend" horizontalCenter="0" verticalCenter="95"/>
<mx:Button label="發送" horizontalCenter="0" verticalCenter="121" click="sendData()"/>
<mx:Button label="連接" horizontalCenter="0" verticalCenter="-103" click="connectServer()"/>
</mx:Application>