fix:添加websocket

pom.xml

@@ -211,6 +211,16 @@
             <artifactId>springfox-swagger-ui</artifactId>
             <version>${swagger.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.github.ulisesbocchio</groupId>
+            <artifactId>jasypt-spring-boot-starter</artifactId>
+            <version>2.1.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-websocket</artifactId>
+            <version>2.6.6</version>
+        </dependency>
     </dependencies>
     <build>
         <plugins>

src/main/java/com/kwan/springbootkwan/aop/LogAspect.java

@@ -17,7 +17,9 @@ import org.springframework.stereotype.Component;
 @Aspect
 @Slf4j
 public class LogAspect {
-    @Pointcut(value = "execution(* com.kwan.springbootkwan.service.*.*(..))")
+
+    @Pointcut(value = "execution(* com.kwan.springbootkwan.service.*.*(..)) && !execution(* com.kwan.springbootkwan.service.WebSocketServer.*(..))")
+
     public void pcl() {
     }
 

src/main/java/com/kwan/springbootkwan/config/WebSocketConfig.java

+package com.kwan.springbootkwan.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.socket.server.standard.ServerEndpointExporter;
+
+
+/**
+ * 开启websocket的支持
+ *
+ * @author : qinyingjie
+ * @version : 2.2.0
+ * @date : 2023/8/26 16:45
+ */
+@Configuration
+public class WebSocketConfig {
+    @Bean
+    public ServerEndpointExporter serverEndpointExporter() {
+        return new ServerEndpointExporter();
+    }
+}
\ No newline at end of file

src/main/java/com/kwan/springbootkwan/controller/SystemController.java

+package com.kwan.springbootkwan.controller;
+
+import com.kwan.springbootkwan.service.WebSocketServer;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.servlet.ModelAndView;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
+@Controller("web_Scoket_system")
+@RequestMapping("/api/socket")
+public class SystemController {
+    //页面请求
+    @GetMapping("/index/{userId}")
+    public ModelAndView socket(@PathVariable String userId) {
+        ModelAndView mav = new ModelAndView("/socket1");
+        mav.addObject("userId", userId);
+        return mav;
+    }
+
+    //推送数据接口
+    @ResponseBody
+    @RequestMapping("/socket/push/{cid}")
+    public Map pushToWeb(@PathVariable String cid, String message) {
+        Map<String,Object> result = new HashMap<>();
+        try {
+            WebSocketServer.sendInfo(message, cid);
+            result.put("code", cid);
+            result.put("msg", message);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return result;
+    }
+}

src/main/java/com/kwan/springbootkwan/service/WebSocketServer.java

+package com.kwan.springbootkwan.service;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+
+import javax.websocket.OnClose;
+import javax.websocket.OnError;
+import javax.websocket.OnMessage;
+import javax.websocket.OnOpen;
+import javax.websocket.Session;
+import javax.websocket.server.PathParam;
+import javax.websocket.server.ServerEndpoint;
+import java.io.IOException;
+import java.util.concurrent.CopyOnWriteArraySet;
+
+@Component
+@Slf4j
+@ServerEndpoint(value = "/api/websocket/{sid}")
+public class WebSocketServer {
+
+    //静态变量，用来记录当前在线连接数。应该把它设计成线程安全的。
+    private static int onlineCount = 0;
+    //concurrent包的线程安全Set，用来存放每个客户端对应的MyWebSocket对象。
+    private static CopyOnWriteArraySet<WebSocketServer> webSocketSet = new CopyOnWriteArraySet<>();
+
+    //与某个客户端的连接会话，需要通过它来给客户端发送数据
+    private Session session;
+
+    //接收sid
+    private String sid = "";
+
+    /**
+     * 连接建立成功调用的方法
+     */
+    @OnOpen
+    public void onOpen(Session session, @PathParam("sid") String sid) {
+        this.session = session;
+        webSocketSet.add(this);     //加入set中
+        this.sid = sid;
+        addOnlineCount();           //在线数加1
+        try {
+            sendMessage("conn_success");
+            log.info("有新窗口开始监听:" + sid + ",当前在线人数为:" + getOnlineCount());
+        } catch (IOException e) {
+            log.error("websocket IO Exception");
+        }
+    }
+
+    /**
+     * 连接关闭调用的方法
+     */
+    @OnClose
+    public void onClose() {
+        webSocketSet.remove(this);  //从set中删除
+        subOnlineCount();           //在线数减1
+        //断开连接情况下，更新主板占用情况为释放
+        log.info("释放的sid为：" + sid);
+        //这里写你 释放的时候，要处理的业务
+        log.info("有一连接关闭！当前在线人数为" + getOnlineCount());
+
+    }
+
+    /**
+     * 收到客户端消息后调用的方法
+     *
+     * @ Param message 客户端发送过来的消息
+     */
+    @OnMessage
+    public void onMessage(String message, Session session) {
+        log.info("收到来自窗口" + sid + "的信息:" + message);
+        //群发消息
+        for (WebSocketServer item : webSocketSet) {
+            try {
+                item.sendMessage(message);
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    /**
+     * @ Param session
+     * @ Param error
+     */
+    @OnError
+    public void onError(Session session, Throwable error) {
+        log.error("发生错误");
+        error.printStackTrace();
+    }
+
+    /**
+     * 实现服务器主动推送
+     */
+    public void sendMessage(String message) throws IOException {
+        this.session.getBasicRemote().sendText(message);
+    }
+
+    /**
+     * 群发自定义消息
+     */
+    public static void sendInfo(String message, @PathParam("sid") String sid) throws IOException {
+        log.info("推送消息到窗口" + sid + "，推送内容:" + message);
+
+        for (WebSocketServer item : webSocketSet) {
+            try {
+                //这里可以设定只推送给这个sid的，为null则全部推送
+                if (sid == null) {
+//                    item.sendMessage(message);
+                } else if (item.sid.equals(sid)) {
+                    item.sendMessage(message);
+                }
+            } catch (IOException e) {
+                continue;
+            }
+        }
+    }
+
+    public static synchronized int getOnlineCount() {
+        return onlineCount;
+    }
+
+    public static synchronized void addOnlineCount() {
+        WebSocketServer.onlineCount++;
+    }
+
+    public static synchronized void subOnlineCount() {
+        WebSocketServer.onlineCount--;
+    }
+
+    public static CopyOnWriteArraySet<WebSocketServer> getWebSocketSet() {
+        return webSocketSet;
+    }
+}

src/main/resources/application-local.yml

@@ -42,3 +42,7 @@ spring:
           url: jdbc:mysql://120.79.36.53:3306/kwan?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
           username: root
           password: 15671628341Qwe.
+# jasypt加密的密匙
+jasypt:
+  encryptor:
+    password: Y6M9fAJQdU7jNp5MW
\ No newline at end of file

src/main/resources/index.html

+<!DOCTYPE html>
+<html>
+
+<head>
+    <meta charset="utf-8">
+    <title>Java后端WebSocket的Tomcat实现</title>
+    <script type="text/javascript" src="js/jquery.min.js"></script>
+</head>
+
+<body>
+<div id="main" style="width: 1200px;height:800px;"></div>
+Welcome<br/><input id="text" type="text"/>
+<button onclick="send()">发送消息</button>
+<hr/>
+<button onclick="closeWebSocket()">关闭WebSocket连接</button>
+<hr/>
+<div id="message"></div>
+</body>
+<script type="text/javascript">
+    var websocket = null;
+    //判断当前浏览器是否支持WebSocket
+    if ('WebSocket' in window) {
+        //改成你的地址
+        websocket = new WebSocket("ws://localhost:8888/api/websocket/100");
+    } else {
+        alert('当前浏览器 Not support websocket')
+    }
+
+    //连接发生错误的回调方法
+    websocket.onerror = function () {
+        setMessageInnerHTML("WebSocket连接发生错误");
+    };
+
+    //连接成功建立的回调方法
+    websocket.onopen = function () {
+        setMessageInnerHTML("WebSocket连接成功");
+    }
+    var U01data, Uidata, Usdata
+    //接收到消息的回调方法
+    websocket.onmessage = function (event) {
+        console.log(event);
+        setMessageInnerHTML(event);
+        setechart()
+    }
+
+    //连接关闭的回调方法
+    websocket.onclose = function () {
+        setMessageInnerHTML("WebSocket连接关闭");
+    }
+
+    //监听窗口关闭事件，当窗口关闭时，主动去关闭websocket连接，防止连接还没断开就关闭窗口，server端会抛异常。
+    window.onbeforeunload = function () {
+        closeWebSocket();
+    }
+
+    //将消息显示在网页上
+    function setMessageInnerHTML(innerHTML) {
+        document.getElementById('message').innerHTML += innerHTML + '<br/>';
+    }
+
+    //关闭WebSocket连接
+    function closeWebSocket() {
+        websocket.close();
+    }
+
+    //发送消息
+    function send() {
+        var message = document.getElementById('text').value;
+        websocket.send('{"msg":"' + message + '"}');
+        setMessageInnerHTML(message + "&#13;");
+    }
+</script>
+
+</html>
\ No newline at end of file

src/test/java/com/kwan/springbootkwan/utils/StringEncryptorUtil.java

+package com.kwan.springbootkwan.utils;
+
+import com.kwan.springbootkwan.SpringBootKwanApplication;
+import org.jasypt.encryption.StringEncryptor;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringRunner;
+
+
+/**
+ * 加解密工具测试
+ *
+ * @author : qinyingjie
+ * @version : 2.2.0
+ * @date : 2023/8/26 15:49
+ */
+@RunWith(SpringRunner.class)
+@SpringBootTest
+@ContextConfiguration(classes = SpringBootKwanApplication.class)
+public class StringEncryptorUtil {
+
+    @Autowired
+    private StringEncryptor encryptor;
+
+    @Test
+    public void getPass() {
+        String url = encryptor.encrypt("jdbc:mysql://localhost:3306/mydb?autoReconnect=true&serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=utf-8");
+        String name = encryptor.encrypt("root");
+        String password = encryptor.encrypt("123456");
+        System.out.println("database url: " + url);
+        System.out.println("database name: " + name);
+        System.out.println("database password: " + password);
+        Assert.assertTrue(url.length() > 0);
+        Assert.assertTrue(name.length() > 0);
+        Assert.assertTrue(password.length() > 0);
+    }
+}
\ No newline at end of file