无法将数据从C#发送到Java(Android)程序. [英] Unable to send data from C# to Java (Android) program.
问题描述
我正在尝试通过Wifi通过TCP连接将数据从C#.NET(Windows应用程序)程序发送到Java(Android应用程序)程序,反之亦然.到目前为止,我已经成功地将数据从Java发送到C#,但是无法将数据从C#发送到Java.
以下是Java代码,我用来创建连接并接收数据:
I am trying to send data from a C#.NET (Windows Application) program to a Java (Android App) program and vice versa, via TCP connection through Wifi. Till now I am success to send data from Java to C#, but unable to do so from C# to Java.
Following is the Java code, I used to create a connection and receive data:
ServerSocket serverSocket = null;
DataInputStream socketInputStream;
while (true) {
try {
String localIPAddr = getLocalIPAddress();
InetSocketAddress ipEndPoint = new InetSocketAddress(
InetAddress.getByName(localIPAddr), 8222);
serverSocket = new ServerSocket();
serverSocket.bind(ipEndPoint, 4);
workerSocket = serverSocket.accept();
socketInputStream = new DataInputStream(
workerSocket.getInputStream());
inputText.setText(socketInputStream.readUTF());
} catch (Exception ex) {
throw ex;
}
}
这里的getLocalIPAddress()
方法返回Android设备的IP地址.
以下是Windows应用程序中的C#代码,用于连接到Android的IP地址(192.168.1.6)并向其发送数据:
Here getLocalIPAddress()
method returns the IP Address of the Android Device.
Following is the C# code in Windows Application to connect to the Android''s IP Address (192.168.1.6) and send data to it:
Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
void button1_Click(object sender, EventArgs e)
{
try
{
if (!clientSocket.Connected)
clientSocket.Connect(IPAddress.Parse("192.168.1.6"), 8222);
clientSocket.Send(Encoding.UTF8.GetBytes(txtInput.Text));
}
catch (Exception ex)
{
throw ex;
}
}
好吧,客户端(C#)无法连接到服务器(Java),这意味着数据没有从客户端离开.但是,如果连接了,它会.
请告诉我我想念的是什么,我在哪里弄错了. :)
Well, client (C#) is failing to connect to the server (Java) That means data is not leaving from client. But it will, if it get connected.
Please tell me what am I missing and where am I mistaken. :)
推荐答案
不会在不断创建连接和流时将Java代码运行到堆空间异常中吗?
doesn''t the Java code run into a heap space exception as you are constantly creating connections and streams??
好吧,我自己解决了这个问题.
在下面查看已解决的Java代码:
Well, I have solved this myself.
Check out the solved Java code below:
ServerSocket serverSocket = null;
Socket workerSocket;
DataInputStream socketInputStream;
try {
if (serverSocket == null) {
// No need to get local IP address and to bind InetSocketAddress.
// Following single line make it very simple.
serverSocket = new ServerSocket(8222, 4);
workerSocket = serverSocket.accept();
}
// When data are accepted socketInputStream will be invoked.
socketInputStream = new DataInputStream(
workerSocket.getInputStream());
/* Since data are accepted as byte, all of them will be collected in the
following byte array which initialised with accepted data length. */
byte[] rvdMsgByte = new byte[socketInputStream.available()];
// Collecting data into byte array
for (int i = 0; i < rvdMsgByte.length; i++)
rvdMsgByte[i] = socketInputStream.readByte();
// Converting collected data in byte array into String.
String rvdMsgTxt = new String(rvdMsgByte);
// Setting String to the text view.
receivedMsg.setText(rvdMsgTxt);
} catch (Exception ex) {
throw ex;
}
请注意,将使用一个单独的线程在后台运行此代码.
Note that a separate thread is to be used to run this code in background.
这篇关于无法将数据从C#发送到Java(Android)程序.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!