如何给springboot项目配置域名

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jack 2024-09-14 09:23:48

文章标签 如何给springboot项目配置域名 spring boot tomcat unix spring 文章分类 架构后端开发

【技术应用】java基于UNIX域套接字unix domain socket连接redis

一、前言
二、springboot内置tomcat
三、tomcat对unix域套接字协议支持分析
四、springboot内置tomcat使用unixdomainsocket协议示例
五、springboot外置tomcat配置unixdomainsocket
六、总结

一、前言

近期总结了不少**UNIX域套接字协议(unix domain socket)**在工作中的应用，但是有一个工作中使用最多的组件支持使用UNIX DOMAIN SOCKET协议的应用示例一直没有总结，那就是：tomcat支持UNIX域套接字协议(unix domain socket)的应用示例，今天总结一下；

往期UNIX域套接字协议在组件中的应用示例：

1、【技术应用】java基于UNIX域套接字(unix domain socket)连接redis

2、【技术应用】java基于UNIX域套接字(unix domain socket)连接postgresql数据库

3、【技术应用】java基于UNIX域套接字(unix domain socket)连接mysql数据库

二、springboot内置tomcat

1、springboot支持tomcat内置功能，项目直接可以编译成jar包运行，tomcat可以编译到jar内部，简化了应用，这也是springboot一大特点；

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

2、springboot内置tomcat的配置项属性通常是在application.yml配置文件中设置，如下：

server:
  tomcat:
    accept-count: 80 #挂起的请求队列最大连接数，默认100
    max-connections: 2000  #最大连接数,默认10000，tomcat内tcp连接池的大小
    max-threads: 200 #最大线程数，默认200，超过加入等待队列，默认是100，当等待队列达到100后，直接拒绝此次请求返回connection refused。连接超时时间默认为20秒
    min-spare-threads: 5  #最小工作线程数
    connection-timeout: 60000  #server端的socket超时间，默认60s
    accesslog:
      enabled: true #启动tomcat访问日志

但是，通过分析所有的配置项，并没有发现unixdomainsocket相关的配置信息，所以不能通过apllication.yml配置文件实现unixdomainsocket功能；

3、springboot中通过代码配置内置tocmat属性；

1）配置Servlet容器的端口为9000

import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import
org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
import org.springframework.stereotype.Component;
@Component
public class MyWebServerFactoryCustomizer implements
WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> {
  @Override
  public void customize(ConfigurableServletWebServerFactory server) {
  server.setPort(9000);
  }
}

2）使用ConfigurableServletWebServerFactory的子类（比如TomcatServletWebServerFactory)来配置Servlet容器

import java.time.Duration;
import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.stereotype.Component;
@Component
public class MyTomcatWebServerFactoryCustomizer implements
WebServerFactoryCustomizer<TomcatServletWebServerFactory> {
  @Override
  public void customize(TomcatServletWebServerFactory server) {
  server.addConnectorCustomizers((connector) ->
connector.setAsyncTimeout(Duration.ofSeconds(20).toMillis()));
  }
}

三、tomcat对unix域套接字协议支持分析

1、tomcat的组成可以分为两部分：连接器和容器
连接器（connector）：专门用于处理与网络连接相关的问题，比如在web开发中的Socket链接，request封装，连接线程池等等。
容器（servlet）：用来存放我们编写的网站程序。tomcat一共有四个容器：Engine, Host, Context和Wrapper。一个Wrapper对应一个Servlet, 一个Context对应一个应用(比如，默认情况下webapps/ROOT中存放的为主应用，对应一个站点的根目录)，一个Host对应一个站点（例如不同的域名），Engine是引擎。

2、connector里面负责处理请求的协议主要有基于bio,nio,nio2,apr 几种不同的http协议，其中支持NIO协议的属性设置内是支持unixdomainsocket属性配置的；

pollerThreadPriority：(int)The priority of the poller threads
selectorTimeout：(int)The time in milliseconds to timeout on a select() for the poller
useSendfile：(bool)Use this attribute to enable or disable sendfile capability
socket.directBuffer：(bool)Boolean value, whether to use direct ByteBuffers or java mapped ByteBuffers
 
socket.directSslBuffer：(bool)Boolean value, whether to use direct ByteBuffers or java mapped ByteBuffers for the SSL buffers
socket.appReadBufSize：(int)Each connection that is opened up in Tomcat get associated with a read ByteBuffer
socket.appWriteBufSize：(int)Each connection that is opened up in Tomcat get associated with a write ByteBuffer
socket.bufferPool：(int)The NIOx connector uses a class called NioXChannel that holds elements linked to a socket
socket.bufferPoolSize：(int)The NioXChannel pool can also be size based, not used object based
 
socket.processorCache：(int)Tomcat will cache SocketProcessor objects to reduce garbage collection
socket.eventCache：(int)Tomcat will cache PollerEvent objects to reduce garbage collection
 
unixDomainSocketPath：Where supported, the path to a Unix Domain Socket that this Connector will create and await incoming connections
unixDomainSocketPathPermissions：Where supported, the posix permissions that will be applied to the to the Unix Domain Socket specified with unixDomainSocketPath above
useInheritedChannel：(bool)Defines if this connector should inherit an inetd/systemd network socket

所以，我们只需要设置unixDomainSocketPath属性就可以了；

四、springboot内置tomcat使用unixdomainsocket协议示例

1、jdk版本
在使用springboot的内置tomcat使用，依赖的jdk最低版本是jdk16，因为从jdk16开始，才支持Unix套接字；
在2019 Windows Server和Windows 10提供了对Unix套接字的支持，Unix套接字常用语本地进程之间通信，相比于TCP协议，本地进程使用Unix套接字可以更高效安全的通信。JDK16新增了一个适配Unix套接字的新接口java.net.UnixDomainSocketAddress用于支持这一特性

如果jdk版本低于16，则会报错：

Caused by: java.lang.UnsupportedOperationException: Java Runtime does not support Unix domain sockets. You must use Java 16 to use this feature.
	at org.apache.tomcat.util.compat.JreCompat.openUnixDomainServerSocketChannel(JreCompat.java:337) ~[tomcat-embed-core-9.0.70.jar:9.0.70]
	at org.apache.tomcat.util.net.NioEndpoint.initServerSocket(NioEndpoint.java:252) ~[tomcat-embed-core-9.0.70.jar:9.0.70]
	at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:230) ~[tomcat-embed-core-9.0.70.jar:9.0.70]
	at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1227) ~[tomcat-embed-core-9.0.70.jar:9.0.70]
	at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:1240) ~[tomcat-embed-core-9.0.70.jar:9.0.70]
	at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:604) ~[tomcat-embed-core-9.0.70.jar:9.0.70]
	at org.apache.coyote.http11.AbstractHttp11Protocol.init(AbstractHttp11Protocol.java:76) ~[tomcat-embed-core-9.0.70.jar:9.0.70]
	at org.apache.catalina.connector.Connector.initInternal(Connector.java:1047) ~[tomcat-embed-core-9.0.70.jar:9.0.70]
	... 21 common frames omitted

所以我们使用jdk19

<properties>
        <java.version>19</java.version>
    </properties>

2、springboot内置tomcat属性配置

springboot内置tomcat配置unix域套接字协议很简单，只需要设置connector.setProperty("unixDomainSocketPath","D:\\http.sock")

package com.example.tomcat19.config;

import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.context.annotation.Configuration;


@Configuration
public class MyTomcatWebServerFactoryCustomizer implements WebServerFactoryCustomizer<TomcatServletWebServerFactory> {

    @Override
    public void customize(TomcatServletWebServerFactory server) {
        server.addConnectorCustomizers((connector) -> {
                    //connector.setAsyncTimeout(Duration.ofSeconds(20).toMillis());
                    //connector.setProperty("protocol","org.apache.coyote.http11.Http11NioProtocol");
                    connector.setProperty("unixDomainSocketPath","D:\\http.sock");
                }
        );
    }
}

3、服务端测试接口

package com.example.tomcat19.action;

import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@Slf4j
@RestController
public class TestAction {

    @GetMapping("/test")
    public String test(){
        log.info("收到请求id:1");
        return "哈哈哈";
    }

}

服务端项目结构：

如何给springboot项目配置域名_tomcat

4、请求客户端

为了方便验证，我们这里使用socket基于http.sock向服务端发送http请求报文

package com.sk.init;

import java.net.StandardProtocolFamily;
import java.net.UnixDomainSocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.SocketChannel;

public class Test {

    public static void main(String[] args) throws Exception{
        // 建立 Unix Socket 连接
        //File sockFile = new File("D:\\http.sock");
        SocketChannel socketChannel = SocketChannel.open(StandardProtocolFamily.UNIX);

        UnixDomainSocketAddress of = UnixDomainSocketAddress.of("D:\\http.sock");
        //UnixDomainSocketAddress of = UnixDomainSocketAddress.of("D:\\test.sock");
        boolean connect = socketChannel.connect(of);
        System.out.println(connect);

        String newData = "this is domain socket..." + System.currentTimeMillis();
        StringBuffer stringBuffer = new StringBuffer();
        stringBuffer.append("GET /test HTTP/1.1").append("\n");
       
        stringBuffer.append("Host: 127.0.0.1").append("\r\n");
        stringBuffer.append("Connection: keep-alive").append("\r\n");
        stringBuffer.append("Cache-Control: max-age=0").append("\r\n");
        stringBuffer.append("sec-ch-ua: \" Not A;Brand\";v=\"99\", \"Chromium\";v=\"100\", \"Google Chrome\";v=\"100\"").append("\r\n");
        stringBuffer.append("sec-ch-ua-mobile: ?0").append("\r\n");
        stringBuffer.append("sec-ch-ua-platform: \"Windows\"").append("\r\n");
        stringBuffer.append("Upgrade-Insecure-Requests: 1").append("\r\n");
        stringBuffer.append("User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36").append("\r\n");
        stringBuffer.append("Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9").append("\r\n");
        stringBuffer.append("Sec-Fetch-Site: none").append("\r\n");
        stringBuffer.append("Sec-Fetch-Mode: navigate").append("\r\n");
        stringBuffer.append("Sec-Fetch-User: ?1").append("\r\n");
        stringBuffer.append("Sec-Fetch-Dest: document").append("\r\n");
        stringBuffer.append("Accept-Encoding: gzip, deflate, br").append("\r\n");
        stringBuffer.append("Accept-Language: zh-CN,zh;q=0.9").append("\r\n");
        stringBuffer.append("\r\n");

        //stringBuffer.append("Accept: */*").append("\r\n");
        ByteBuffer buf = ByteBuffer.allocate(2048);
        buf.clear();
        buf.put(stringBuffer.toString().getBytes());
        //buf.put(newData.getBytes());
        buf.flip();
        while (buf.hasRemaining()) {
            socketChannel.write(buf);
        }
        socketChannel.close();
    }

}

5、请求结果

.   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::       (v3.0.2-SNAPSHOT)

23:06:54.720 [main] INFO  org.springframework.boot.StartupInfoLogger.logStarting(StartupInfoLogger.java:51) - Starting Tomcat19Application using Java 19.0.1 with PID 6248 (G:\work3\UDS redis\tomcat19\target\classes started by Administrator in G:\work3\UDS redis\tomcat19)
23:06:54.962 [main] INFO  org.springframework.boot.SpringApplication.logStartupProfileInfo(SpringApplication.java:630) - No active profile set, falling back to 1 default profile: "default"
23:06:55.895 [main] INFO  org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:108) - Tomcat initialized with port(s): 8086 (http)
23:06:55.905 [main] INFO  org.apache.juli.logging.DirectJDKLog.log(DirectJDKLog.java:173) - Initializing ProtocolHandler ["http-nio-D:\\http.sock"]
23:06:55.906 [main] INFO  org.apache.juli.logging.DirectJDKLog.log(DirectJDKLog.java:173) - Starting service [Tomcat]
23:06:55.906 [main] INFO  org.apache.juli.logging.DirectJDKLog.log(DirectJDKLog.java:173) - Starting Servlet engine: [Apache Tomcat/10.1.4]
23:06:55.996 [main] INFO  org.apache.juli.logging.DirectJDKLog.log(DirectJDKLog.java:173) - Initializing Spring embedded WebApplicationContext
23:06:55.996 [main] INFO  org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.prepareWebApplicationContext(ServletWebServerApplicationContext.java:291) - Root WebApplicationContext: initialization completed in 991 ms
23:06:56.344 [main] INFO  org.apache.juli.logging.DirectJDKLog.log(DirectJDKLog.java:173) - Starting ProtocolHandler ["http-nio-D:\\http.sock"]
23:06:56.364 [main] INFO  org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:220) - Tomcat started on port(s): -1 (http) with context path ''
23:06:56.374 [main] INFO  org.springframework.boot.StartupInfoLogger.logStarted(StartupInfoLogger.java:57) - Started Tomcat19Application in 2.287 seconds (process running for 4.057)
23:07:12.012 [http-nio-D:\\http.sock-exec-1] INFO  org.apache.juli.logging.DirectJDKLog.log(DirectJDKLog.java:173) - Initializing Spring DispatcherServlet 'dispatcherServlet'
23:07:12.032 [http-nio-D:\\http.sock-exec-1] INFO  org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:532) - Initializing Servlet 'dispatcherServlet'
23:07:12.033 [http-nio-D:\\http.sock-exec-1] INFO  org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:554) - Completed initialization in 1 ms
23:07:12.062 [http-nio-D:\\http.sock-exec-1] INFO  com.example.tomcat19.action.TestAction.test(TestAction.java:13) - 收到请求id:1

五、springboot外置tomcat配置unixdomainsocket

<Service name="CatalinaLocal">
        <Connector
            protocol="org.apache.coyote.http11.Http11AprProtocol"
            unixDomainSocketPath="/opt/app-name/http.sock" />
        <Engine
            defaultHost="localhost"
            name="Catalina">
            <Host
                name="localhost"
                appBase="webapps"
                unpackWARs="true"
                autoDeploy="false"
                deployIgnore="(?!.*hawtio).*">
                <Valve
                    className="org.apache.catalina.valves.RemoteIpValve" />
            </Host>
        </Engine>
    </Service>

注：这里的配置没有做验证，有兴趣的可以实测一下

六、总结

unix域套接字协议还是非常有用，尤其是涉及性能优化时，有很多大厂的微服务架构都支持unix域套接字协议；

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