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做网站网页排版错误,网络软文推广网站,java网站开发服务器配置,天津注册公司流程和费用标准Springboot 接入 WebSocket 实战前言： WebSocket协议是基于TCP的一种新的网络协议。它实现了浏览器与服务器全双工(full-duplex)通信——允许服务器主动发送信息给客户端。简单理解： 1，常见开发过程中我们知道 Http协议，客户端…

Springboot 接入 WebSocket 实战

前言：
WebSocket协议是基于TCP的一种新的网络协议。它实现了浏览器与服务器全双工(full-duplex)通信——允许服务器主动发送信息给客户端。

简单理解：
1，常见开发过程中我们知道 Http协议，客户端请求一次，服务器响应一次，推送数据，不能主动的推送数据，每次请求都要做一个连接，非常消耗性能。

2，websocket 建立一次链接，可以主动向客户端推送数据。

需求说明：
1，项目需要做一个知识助手，远程调用三方接口，那边是websocket 实时推送数据，类似gpt
2，后端需要连接三方服务，调用接口返回数据给前端，做渲染

在这里插入图片描述

功能实现

1，依赖

 		<dependency><groupId>javax.websocket</groupId><artifactId>javax.websocket-api</artifactId><version>1.1</version></dependency><dependency><groupId>com.squareup.okhttp3</groupId><artifactId>okhttp</artifactId></dependency>

2，代码接口实现

controller:

    @GetMapping("/callxxxxModel")public String callxxxxModel(@RequestParam("paramOne") String paramOne) {return webSocketxxxClientService.callxxxxModel(paramOne);}

service:

    /*** * @param paramOne*            参数1*/String callxxxxModel(String paramOne);

serviceImpl:

@Slf4j
@Service("webSocketxxxClientService")
public class WebSocketxxxClientServiceImpl implements WebSocketxxxClientService{@Overridepublic String callxxxxModel(String paramOne, Integer executeType) {String uri = "ws://10.xx.xx.13:123/sss/xxx/aa/xxx_v2";String xappid = "lsjdfljsdxxx09980dsfsd";String xappkey = "xxsfdsf12123123";long timestamp = System.currentTimeMillis();String seqid = "";log.info("timestamp=" + timestamp);log.info("seqid=" + seqid);WebSocketClientRemote client = new WebSocketClientRemote(uri, xappid, xappkey);// Prepare messageMap<String, Object> message = new HashMap<>();message.put("uid", xappid);message.put("timestamp", timestamp);message.put("seqid", seqid);message.put("stream", "true");// 会话识别码，切换话题可能需要更换message.put("session_id", seqid);message.put("prov", "xxsdfsdf23424332");message.put("param1", paramOne);message.put("param2", "xvsdfds23423423xxxxx");String jsonMessage = JSON.toJSONString(message);client.sendMessage(jsonMessage);String responseMessage = client.getResponseMessage();client.close();return responseMessage;}

package com.xx.xx.xx.web;import com.xx.xx.common.result.ResultCodeEnum;
import com.xx.xx.xxx.exception.CloudException;
import lombok.extern.slf4j.Slf4j;
import okhttp3.*;
import okio.ByteString;import javax.websocket.ClientEndpoint;
import java.util.concurrent.CountDownLatch;/*** @author nobuyboday*/
@Slf4j
@ClientEndpoint
public class WebSocketClientRemote {private final OkHttpClient client;private final WebSocket webSocket;// public final CountDownLatch latch = new CountDownLatch(50);// 记录websocket 返回的信息public String responseMessage = "";public WebSocketClientRemote(String uri, String xappid, String xappkey) {client = new OkHttpClient();Request request = new Request.Builder().url(uri)// 添加自定义头.addHeader("X-App-ID", "xxxfjslfjslj1231321xxxx3")// 添加自定义头.addHeader("X-App-Key", "0923jhdjflsdjflsdjljxxxxxxflsn").build();webSocket = client.newWebSocket(request, new WebSocketListener() {@Overridepublic void onOpen(WebSocket webSocket, Response response) {log.info("已连接到服务器................");}@Overridepublic void onMessage(WebSocket webSocket, String text) {// log.info("收到消息: " + text);responseMessage += text;}@Overridepublic void onMessage(WebSocket webSocket, ByteString bytes) {log.info("收到字节消息: " + bytes.hex());}@Overridepublic void onClosing(WebSocket webSocket, int code, String reason) {webSocket.close(1000, null);log.info("连接关闭: " + reason);// latch.countDown();}@Overridepublic void onFailure(WebSocket webSocket, Throwable t, Response response) {log.info("连接失败: " + t.getMessage());}});}public void sendMessage(String message) {webSocket.send(message);}public void close() {webSocket.close(1000, "关闭连接");}public void await() throws InterruptedException {// latch.await();}public String getResponseMessage() {// 对方数据是以 <#END> 代表推送数据完毕，这个\\u003c#END\\u003e是<#END>编码问题 不用管boolean isReturn = responseMessage.endsWith("<#END>") || responseMessage.endsWith("\\u003c#END\\u003e") || responseMessage.contains("#END")|| responseMessage.contains("\\u003c#END\\u003e");if (isReturn) {
//            log.info("最终的responseMessage：================>>>:{}", responseMessage);return responseMessage.substring(0, responseMessage.length() - "<#END>".length());} else {// 循环等待try {Thread.sleep(3000);} catch (Exception e) {throw new CloudException(ResultCodeEnum.CALL_GROUP_DCOOS_TYCLOUD_KNOWLEDGE_ASSISTANT_FAIL.getCode(),ResultCodeEnum.CALL_GROUP_DCOOS_TYCLOUD_KNOWLEDGE_ASSISTANT_FAIL.getMessage() + ":" + e);}return getResponseMessage();}}}