springboot http2应用条件
- 使用servlet 4.0
- jdk 9+
- tomcat 9+
springboot 开启h2
创建证书
创建脚本：
keytool -genkey -keyalg RSA -alias wisely -keystore keystore.jks -storepass pass1234 -validity 4000 -keysize 2048
添加springboot配置
server:port: 8080http2:enabled: true #启用http2ssl: #添加证书key-store: classpath:keystore.jkskey-store-password: pass1234key-store-type: JKSkey-alias: wiselykey-password: pass1234
验证
浏览器验证
通过浏览器访问接口，然后查看使用的protocol。
springboot 开启h2c (无ssl)
Springboot默认自带的tomcat开启http2必须使用ssl，所以需要重新启一个tomcat，并修改其配置，使其支持HTTP2.0 （Springboot支持多connector）。如果只考虑支持h2c，可以让springboot自带的tomcat不启动。
新启的tomcat可以不需要上面的配置，把它注释掉:
server:
# http2:
# enabled: true #启用http2
#
# ssl: #添加证书
# key-store: classpath:keystore.jks
# key-store-password: pass1234
# key-store-type: JKS
# key-alias: wisely
# key-password: pass1234
添加TomcatServletWebServerFactory 的Configuration类：
import org.apache.catalina.connector.Connector;
import org.apache.coyote.http2.Http2Protocol;
import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
import org.springframework.boot.web.servlet.server.ServletWebServerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;@Configuration
public class H2cConfig {private int port = 8081;@Beanpublic ServletWebServerFactory servletContainer(){TomcatServletWebServerFactory servletWebServerFactory = new TomcatServletWebServerFactory();Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");connector.addUpgradeProtocol(new Http2Protocol());connector.setPort(port);servletWebServerFactory.addAdditionalTomcatConnectors(connector);return servletWebServerFactory;}
}
验证
使用okhttp进行验证。
代码如下：
import okhttp3.ConnectionPool;
import okhttp3.Protocol;
import okhttp3.Request;
import okhttp3.Response;import java.time.Duration;
import java.util.ArrayList;
import java.util.List;
import java.io.IOException;public class OkHttpClient {public static String get(String url) throws IOException {List<Protocol> protocols = new ArrayList<>();
// protocols.add(Protocol.HTTP_2);protocols.add(Protocol.H2_PRIOR_KNOWLEDGE);okhttp3.OkHttpClient.Builder builder = new okhttp3.OkHttpClient.Builder().readTimeout(Duration.ofSeconds(10)).connectTimeout(Duration.ofSeconds(10)).writeTimeout(Duration.ofSeconds(10)).connectionPool(new ConnectionPool()).protocols(protocols);okhttp3.OkHttpClient httpClient = builder.build();Request request = new Request.Builder().get().url(url).build();Response response = httpClient.newCall(request).execute();return response.body().string();}public static void main(String[] args) throws IOException {String body = OkHttpClient.get("http://localhost:8081/test/get?q=fd");System.out.println("http2 response:" + body);}
}
启动springboot应用。
再过行OkHttpClient.main()方法，运行结果：
参考
与华为联调过程中，HTTP/2.0 协议踩坑
Spring Boot 2.x实战50 - Spring Web MVC 22 - Servlet容器（配置SSL与HTTP/2）
Spring Boot实现Undertow服务器支持HTTP2协议
Spring Boot 2.x实战50 - Spring Web MVC 22 - Servlet容器（配置SSL与HTTP/2）
springboot http2
