创建maven项目
在idea新建普通maven项目
加入相关jar包
pom.xml
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| <?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>websocketservertest</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
<spring.boot.version>2.7.18</spring.boot.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring.boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
</project>
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添加测试handler
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| import org.springframework.web.socket.TextMessage;
import org.springframework.web.socket.WebSocketSession;
import org.springframework.web.socket.handler.TextWebSocketHandler;
public class MyWebSocketHandler extends TextWebSocketHandler {
@Override
public void afterConnectionEstablished(WebSocketSession session) throws Exception {
System.out.println("New WebSocket connection established: " + session.getId());
}
@Override
protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
System.out.println("Received message: " + message.getPayload());
session.sendMessage(new TextMessage("Hello, you sent: " + message.getPayload()));
}
@Override
public void afterConnectionClosed(WebSocketSession session, CloseStatus status) throws Exception {
System.out.println("WebSocket connection closed: " + session.getId());
}
@Override
public void handleTransportError(WebSocketSession session, Throwable exception) throws Exception {
System.err.println("WebSocket transport error: " + exception.getMessage());
}
}
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添加配置类
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| import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.config.annotation.EnableWebSocket;
import org.springframework.web.socket.config.annotation.WebSocketConfigurer;
import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry;
@Configuration
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer {
@Override
public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
registry.addHandler(new MyWebSocketHandler(), "/websocket-endpoint")
.setAllowedOrigins("*");
}
}
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运行并测试
运行spring boot 项目
搜索引擎搜索 websocket在线测试工具。
https://wstool.js.org/
输入地址：ws://127.0.0.1:8080/websocket-endpoint
发送消息：xxxx 查看是否收到和响应情况
关闭连接测试。
缓冲区设置
如果客户端发送消息太大超过8192字节时提示：
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| WebSocket closing: 1009 / No async message support and buffer too small. Buffer size: [8,192], Message size: [8,200]
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在WebSocketConfig 添加：
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| @Bean
public ServletServerContainerFactoryBean createWebSocketContainer()
{
ServletServerContainerFactoryBean bean = new ServletServerContainerFactoryBean();
bean.setMaxTextMessageBufferSize(60 * 1024 * 1024);
bean.setMaxBinaryMessageBufferSize(60 * 1024 * 1024);
return bean;
}
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springcloud gateway中最大帧设置
如果客户端发送消息太大超过65535,后提示：
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| WebSocket closing: 1009 / Max frame length of 65536 has been exceeded.
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在spring cloud gateway配置文件中：
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| spring:
cloud:
gateway:
httpclient:
websocket:
max-frame-payload-length: 2097152
|