Java 如何从android应用程序连接到web套接字服务器

我用java开发了一个聊天web套接字应用服务器，还创建了一个小型android聊天应用程序

import android.util.Log;
import org.java_websocket.client.WebSocketClient;
import org.java_websocket.drafts.Draft_17;
import org.java_websocket.handshake.ServerHandshake;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.HashMap;
import java.util.Map;

public class MyWebSocketClient {
    private WebSocketClient mWebSocketClient;

    public void connect_to_server() {
        URI uri;
        try {
            uri = new URI("ws://172.16.0.146:8082/PChat/chat");
        } catch (URISyntaxException e) {
            e.printStackTrace();
            return;
        }

        Map<String, String> headers = new HashMap<>();

        mWebSocketClient = new WebSocketClient(uri, new Draft_17(), headers, 0) {
            @Override
            public void onOpen(ServerHandshake serverHandshake) {
                Log.i("Websocket", "Opened");
              //  mWebSocketClient.send("Hello from websocket client");
            }

            @Override
            public void onMessage(String s) {
                Log.i("Websocket", "onMessage"+s);
            }

            @Override
            public void onClose(int code, String s, boolean b) {
                Log.i("Websocket", code + ": Closed " + s);
            }

            @Override
            public void onError(Exception e) {
                Log.i("Websocket", "Error " + e.getMessage());
            }
        };
        mWebSocketClient.connect();
    }

    public void sendMessage(String message) {

        mWebSocketClient.send(message);
    }

}

---

如何从android连接到web套接字服务器？

使用依赖项：Java-WebSocket-1.3.0.jar

import org.java_websocket.client.WebSocketClient;
import org.java_websocket.drafts.Draft_17;
import org.java_websocket.handshake.ServerHandshake;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.HashMap;
import java.util.Map;

public class WebsocketClientExample  {

    private WebSocketClient mWebSocketClient;

    public void connect_to_server() {
        URI uri;
        try {
            uri = new URI("ws://path/to/your/websocket/endpoint");
        } catch (URISyntaxException e) {
            e.printStackTrace();
            return;
        }

        Map<String, String> headers = new HashMap<>();

        mWebSocketClient = new WebSocketClient(uri, new Draft_17(), headers, 0) {
            @Override
            public void onOpen(ServerHandshake serverHandshake) {
                Log.i("Websocket", "Opened");
                mWebSocketClient.send("Hello from websocket client");
            }

            @Override
            public void onMessage(String s) {
                Log.i("Websocket", "onMessage"+s);
            }

            @Override
            public void onClose(int code, String s, boolean b) {
                Log.i("Websocket", code + ": Closed " + s);
            }

            @Override
            public void onError(Exception e) {
                Log.i("Websocket", "Error " + e.getMessage());
            }
        };
        mWebSocketClient.connect();
    }
}

import org.java_websocket.client.WebSocketClient；
导入org.java_websocket.drafts.Draft_17；
导入org.java_websocket.handshake.ServerHandshake；
导入java.net.URI；
导入java.net.URISyntaxException；
导入java.util.HashMap；
导入java.util.Map；
公共类WebsocketClientExample{
私有WebSocketClient mWebSocketClient；
public void connect_到_服务器（）{
URI；
试一试{
uri=newURI（“ws://path/to/your/websocket/endpoint”）；
}捕获（URISyntaxException e）{
e、 printStackTrace（）；
返回；
}
Map headers=newhashmap（）；
mWebSocketClient=新WebSocketClient（uri，新草稿_17（），标题，0）{
@凌驾
公用无效onOpen（服务器握手服务器握手）{
Log.i（“Websocket”、“Opened”）；
发送（“来自websocket客户端的您好”）；
}
@凌驾
消息上的公共void（字符串s）{
Log.i（“Websocket”、“onMessage”+s）；
}
@凌驾
公共void onClose（int代码、字符串s、布尔值b）{
Log.i（“Websocket”，代码+”：关闭“+s）；
}
@凌驾
公共无效申报人（例外e）{
Log.i（“Websocket”，“Error”+e.getMessage（））；
}
};
mWebSocketClient.connect（）；
}
}

我使用了您的代码，但连接立即中断。

import org.java_websocket.client.WebSocketClient;
import org.java_websocket.drafts.Draft_17;
import org.java_websocket.handshake.ServerHandshake;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.HashMap;
import java.util.Map;

public class WebsocketClientExample  {

    private WebSocketClient mWebSocketClient;

    public void connect_to_server() {
        URI uri;
        try {
            uri = new URI("ws://path/to/your/websocket/endpoint");
        } catch (URISyntaxException e) {
            e.printStackTrace();
            return;
        }

        Map<String, String> headers = new HashMap<>();

        mWebSocketClient = new WebSocketClient(uri, new Draft_17(), headers, 0) {
            @Override
            public void onOpen(ServerHandshake serverHandshake) {
                Log.i("Websocket", "Opened");
                mWebSocketClient.send("Hello from websocket client");
            }

            @Override
            public void onMessage(String s) {
                Log.i("Websocket", "onMessage"+s);
            }

            @Override
            public void onClose(int code, String s, boolean b) {
                Log.i("Websocket", code + ": Closed " + s);
            }

            @Override
            public void onError(Exception e) {
                Log.i("Websocket", "Error " + e.getMessage());
            }
        };
        mWebSocketClient.connect();
    }
}