SpringBoot如何使用Undertow做伺服器

        <!--<dependency>-->
            <!--<groupId>org.springframework.boot</groupId>-->
            <!--<artifactId>spring-boot-starter-web</artifactId>-->
        <!--</dependency>-->
 
        <!-- 下面的設定將使用undertow來做伺服器而不是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
  # 下面是設定undertow作為伺服器的引數
  undertow:
    # 設定IO執行緒數, 它主要執行非阻塞的任務,它們會負責多個連線, 預設設定每個CPU核心一個執行緒
    io-threads: 4
    # 阻塞任務執行緒池, 當執行類似servlet請求阻塞操作, undertow會從這個執行緒池中取得執行緒,它的值設定取決於系統的負載
    worker-threads: 20
    # 以下的設定會影響buffer,這些buffer會用於伺服器連線的IO操作,有點類似netty的池化記憶體管理
    # 每塊buffer的空間大小,越小的空間被利用越充分
    buffer-size: 1024
    # 是否分配的直接記憶體
    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);
        });
    }
}