WebSocket（二）Client 简单实现

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WebSocket（二）Client 简单实现，基于 Spring Boot

Client 简单实现

继承 WebSocketClient ，增加自定义参数，增加回调函数支持

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import lombok.extern.slf4j.Slf4j;
import org.java_websocket.client.WebSocketClient;
import org.java_websocket.drafts.Draft;
import org.java_websocket.drafts.Draft_6455;
import org.java_websocket.handshake.ServerHandshake;

import java.net.URI;
import java.net.URISyntaxException;
import java.nio.ByteBuffer;
import java.util.HashMap;
import java.util.Map;
import java.util.function.Consumer;

@Slf4j
public class DefaultWebSocketClient extends WebSocketClient {

    private static final int connectTimeout = 2000;
    private static final Draft protocolDraft = new Draft_6455();
    private static final Map<String, String> httpHeaders = new HashMap<>();
    private Consumer<String> callString;
    private Consumer<ByteBuffer> callByte;

    public DefaultWebSocketClient(String serverUri, Consumer<String> callString) throws URISyntaxException {
        this(new URI(serverUri));
        this.callString = callString;
    }

    public DefaultWebSocketClient(Consumer<ByteBuffer> callByte, String serverUri) throws URISyntaxException {
        this(new URI(serverUri));
        this.callByte = callByte;
    }

    public DefaultWebSocketClient(String serverUri, Map<String, String> httpHeaders) throws URISyntaxException {
        this(new URI(serverUri), httpHeaders);
    }

    public DefaultWebSocketClient(URI serverUri) {
        this(serverUri, protocolDraft);
    }

    public DefaultWebSocketClient(URI serverUri, Draft protocolDraft) {
        this(serverUri, protocolDraft, httpHeaders);
    }

    public DefaultWebSocketClient(URI serverUri, Map<String, String> httpHeaders) {
        this(serverUri, protocolDraft, httpHeaders);
    }

    public DefaultWebSocketClient(URI serverUri, Draft protocolDraft, Map<String, String> httpHeaders) {
        this(serverUri, protocolDraft, httpHeaders, connectTimeout);
    }

    public DefaultWebSocketClient(URI serverUri, Draft protocolDraft, Map<String, String> httpHeaders, int connectTimeout) {
        super(serverUri, protocolDraft, httpHeaders, connectTimeout);
        log.debug("构建 DefaultWebSocketClient" +
                "\n\tURI:     {}" +
                "\n\tDraft:   {}" +
                "\n\tHeaders: {}" +
                "\n\ttimeOut: {}", serverUri, protocolDraft, httpHeaders, connectTimeout);
    }

    @Override
    public void onOpen(ServerHandshake handshakedata) {
        log.debug("onOpen…………");
    }

    @Override
    public void onMessage(String message) {
        log.debug("onMessage…………");
        log.info("result {}", message);
        if (callString != null) {
            callString.accept(message);
        }
    }

    @Override
    public void onMessage(ByteBuffer message) {
        log.debug("onMessage-bytes…………");
        log.info("result {}", message);
        if (callByte != null) {
            callByte.accept(message);
        }
    }

    @Override
    public void onClose(int code, String reason, boolean remote) {
        log.debug("onClose…………");
    }

    @Override
    public void onError(Exception ex) {
        log.debug("onError………… {}", ex.getMessage());
    }
}

测试

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import lombok.extern.slf4j.Slf4j;

import java.net.URISyntaxException;
import java.util.function.Consumer;

@Slf4j
public class Test {
    public static void main(String[] args) {
        try {
            Consumer<String> consumer = Test::call;
            DefaultWebSocketClient client = new DefaultWebSocketClient(
                    "ws://localhost:9716/demo",
                    consumer
            );
            client.connectBlocking();
            client.send("我来了");
        } catch (URISyntaxException | InterruptedException e) {
            e.printStackTrace();
        }
    }text

    private static void call(String ss){
        System.out.println("ss = " + ss);
    }
}

控制台输出结果

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17:21:51.830 [main] DEBUG com.example.demo.client.DefaultWebSocketClient - 构建 DefaultWebSocketClient
	URI:     ws://localhost:9716/demo
	Draft:   Draft_6455 extension: DefaultExtension max frame size: 2147483647
	Headers: {}
	timeOut: 2000
17:21:52.069 [WebSocketConnectReadThread-12] DEBUG com.example.demo.client.DefaultWebSocketClient - onOpen…………
17:21:52.099 [WebSocketConnectReadThread-12] DEBUG com.example.demo.client.DefaultWebSocketClient - onMessage…………
17:21:52.099 [WebSocketConnectReadThread-12] INFO com.example.demo.client.DefaultWebSocketClient - result Hello, 我来了
ss = Hello, 我来了

注意

如果你使用单元测试可能会报错，在注解后面增加以下代码即可
SpringBootTest在启动的时候不会启动服务器，所以WebSocket自然会报错。
这个时候需要添加选项webEnvironment，以便提供一个测试的web环境。
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT)

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