关于java：ALPN回调已删除：SPDY和HTTP / 2被禁用。 alpn-boot是否在引导类路径上？

ALPN callback dropped: SPDY and HTTP/2 are disabled. Is alpn-boot on the boot class path?

尝试获取Apple推送通知以与我的Spring Boot项目一起使用。

我正在使用此apns-http2发送推送通知。在他们的GitGub页面上：

Note: Ensure that you have Jetty's ALPN JAR (OkHttp requires it) in
your boot classpath. See here for more information. This is required
until Java 9 is released, as Java 8 does not have native support for
HTTP/2.

所以我添加了vm选项

1	Xbootclasspath/p:/Users/sarath/.m2/repository/org/mortbay/jetty/alpn/alpn-boot/8.1.9.v20160720//alpn-boot-8.1.9.v20160720.jar

在Intellij中运行配置，一切正常。我收到推送通知。

但是，当我将战争部署到tomcat并尝试发送推送通知时，出现了错误：

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20-Apr-2019 13:08:33.400 INFO [OkHttp https://api.development.push.apple.com/3/device/A704797F6E1E284FB081630184A26755B59593715E1CD543483C2136CE24D4FD] okhttp3.internal.Platform$JdkWithJettyBootPlatform.getSelectedProtocol ALPN callback dropped: SPDY and HTTP/2 are disabled. Is alpn-boot on the boot class path?
20-Apr-2019 13:08:34.935 INFO [OkHttp https://api.development.push.apple.com/3/device/A704797F6E1E284FB081630184A26755B59593715E1CD543483C2136CE24D4FD] okhttp3.internal.Platform$JdkWithJettyBootPlatform.getSelectedProtocol ALPN callback dropped: SPDY and HTTP/2 are disabled. Is alpn-boot on the boot class path?
20-Apr-2019 13:08:36.588 INFO [OkHttp https://api.development.push.apple.com/3/device/A704797F6E1E284FB081630184A26755B59593715E1CD543483C2136CE24D4FD] okhttp3.internal.Platform$JdkWithJettyBootPlatform.getSelectedProtocol ALPN callback dropped: SPDY and HTTP/2 are disabled. Is alpn-boot on the boot class path?
20-Apr-2019 13:08:38.109 INFO [OkHttp https://api.development.push.apple.com/3/device/A704797F6E1E284FB081630184A26755B59593715E1CD543483C2136CE24D4FD] okhttp3.internal.Platform$JdkWithJettyBootPlatform.getSelectedProtocol ALPN callback dropped: SPDY and HTTP/2 are disabled. Is alpn-boot on the boot class path?
failure: NotificationResponse{error=null, httpStatusCode=-1, responseBody='null', cause=java.io.IOException: unexpected end of stream on okhttp3.Address@d60ab6f0}

我不确定如何在启动类路径上设置alpn-boot。我尝试执行

1	java -Xbootclasspath/p:/Users/sarath/.m2/repository/org/mortbay/jetty/alpn/alpn-boot/8.1.9.v20160720/alpn-boot-8.1.9.v20160720.jar

从命令提示符。但这仅显示了一些Java帮助命令。我不知道jar是否实际上已添加到引导类路径。

我也尝试过使用maven-surefire-plugin，就像这里所说的。但是仍然出现相同的错误。

这是我的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>

<parent>
<groupId>com.cinch</groupId>
gch</artifactId>
<version>2.0.0</version>
<relativePath>../pom.xml</relativePath>
</parent>

<groupId>com.cinch.gch</groupId>
apn</artifactId>
<version>1.0.0</version>
<packaging>war</packaging>
<name>apn</name>
<description>Contains push notification services</description>

<properties>
<java.version>1.8</java.version>
8.1.9.v20160720</alpn-boot-version>
</properties>

<dependencies>

<dependency>
<groupId>org.springframework.boot</groupId>
spring-boot-starter-web</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
spring-boot-starter-tomcat</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
spring-boot-starter-security</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
spring-boot-starter-activemq</artifactId>
</dependency>

<dependency>
<groupId>com.cinch.gch</groupId>
core</artifactId>
<version>1.0.0</version>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
spring-boot-starter-data-jpa</artifactId>
</dependency>

<dependency>
<groupId>mysql</groupId>
mysql-connector-java</artifactId>
</dependency>

<dependency>
<groupId>com.cinch</groupId>
gch-cache</artifactId>
</dependency>

<dependency>
<groupId>org.mortbay.jetty.alpn</groupId>
alpn-boot</artifactId>
<version>${alpn-boot-version}</version>
<scope>runtime</scope>
</dependency>

<dependency>
<groupId>com.clevertap.apns</groupId>
apns-http2</artifactId>
<version>1.0.3</version>
</dependency>

</dependencies>

<build>
<plugins>

<plugin>
<groupId>org.springframework.boot</groupId>
spring-boot-maven-plugin</artifactId>
</plugin>

<plugin>
<groupId>org.apache.maven.plugins</groupId>
maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>

<plugin>
<groupId>org.apache.maven.plugins</groupId>
maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>

<plugin>
maven-surefire-plugin</artifactId>
<configuration>

-Xbootclasspath/p:/Users/sarath/.m2/repository/org/mortbay/jetty/alpn/alpn-boot/${alpn-boot-version}/alpn-boot-${alpn-boot-version}.jar
</argLine>
</configuration>
</plugin>

</plugins>
<finalName>gch-apn</finalName>
</build>

</project>

我尝试了许多其他操作，但似乎没有任何效果。