<!--<dependency>-->
            <!--<groupId>org.springframework.boot</groupId>-->
            <!--<artifactId>spring-boot-starter-web</artifactId>-->
        <!--</dependency>-->
 
        <!-- 下面的配置將使用undertow來(lái)做服務(wù)器而不是tomcat -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-undertow</artifactId>
        </dependency>

server:
  port: 8081
  # 下面是配置undertow作為服務(wù)器的參數(shù)
  undertow:
    # 設(shè)置IO線程數(shù), 它主要執(zhí)行非阻塞的任務(wù),它們會(huì)負(fù)責(zé)多個(gè)連接, 默認(rèn)設(shè)置每個(gè)CPU核心一個(gè)線程
    io-threads: 4
    # 阻塞任務(wù)線程池, 當(dāng)執(zhí)行類(lèi)似servlet請(qǐng)求阻塞操作, undertow會(huì)從這個(gè)線程池中取得線程,它的值設(shè)置取決于系統(tǒng)的負(fù)載
    worker-threads: 20
    # 以下的配置會(huì)影響buffer,這些buffer會(huì)用于服務(wù)器連接的IO操作,有點(diǎn)類(lèi)似netty的池化內(nèi)存管理
    # 每塊buffer的空間大小,越小的空間被利用越充分
    buffer-size: 1024
    # 是否分配的直接內(nèi)存
    direct-buffers: true

/**
?* 功能描述：
?*
?* @author liuchaoyong
?* @version 1.0
?* @date 2019-05-26 21:41
?*/
@Component
public class CustomizationBean implements WebServerFactoryCustomizer<UndertowServletWebServerFactory> {
?
? ? @Override
? ? public void customize(UndertowServletWebServerFactory factory) {
? ? ? ? factory.addDeploymentInfoCustomizers(deploymentInfo -> {
? ? ? ? ? ? WebSocketDeploymentInfo webSocketDeploymentInfo = new WebSocketDeploymentInfo();
? ? ? ? ? ? webSocketDeploymentInfo.setBuffers(new DefaultByteBufferPool(false, 1024));
? ? ? ? ? ? deploymentInfo.addServletContextAttribute("io.undertow.websockets.jsr.WebSocketDeploymentInfo", webSocketDeploymentInfo);
? ? ? ? });
? ? }
}