本篇內容主要講解“springboot整合netty框架的方式有哪些”，感興趣的朋友不妨來看看。本文介紹的方法操作簡單快捷，實用性強。下面就讓小編來帶大家學習“springboot整合netty框架的方式有哪些”吧!
netty作為一個高性能的io框架，是非好用的一個技術框架，
Netty 是一個基于NIO的客戶、服務器端編程框架，使用Netty 可以確保你快速和簡單的開發出一個網絡應用，例如實現了某種協議的客戶、服務端應用。Netty相當于簡化和流線化了網絡應用的編程開發過程，例如：基于TCP和UDP的socket服務開發。
“快速”和“簡單”并不用產生維護性或性能上的問題。Netty 是一個吸收了多種協議（包括FTP、SMTP、HTTP等各種二進制文本協議）的實現經驗，并經過相當精心設計的項目。最終，Netty 成功的找到了一種方式，在保證易于開發的同時還保證了其應用的性能，穩定性和伸縮性
首先整個項目引入pom
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.2.1.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.cxy</groupId> <artifactId>netty</artifactId> <version>0.0.1-SNAPSHOT</version> <name>netty</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>io.netty</groupId> <artifactId>netty-all</artifactId> <version>4.1.25.Final</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
handler類是不會改變的
package com.cxy.netty.controller;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;
public class EchoServerHandler extends ChannelInboundHandlerAdapter {
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg){
ByteBuf in = (ByteBuf) msg;
System.out.println("Server received: " + in.toString(CharsetUtil.UTF_8));
ctx.write(in);
}
public void channelReadComplete(ChannelHandlerContext ctx){
ctx.writeAndFlush(ChannelFutureListener.CLOSE);
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause){
cause.printStackTrace();
ctx.close();
}這個handler是我從官網上copy下來的
package com.cxy.netty.controller;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.autoconfigure.web.ServerProperties;
import org.springframework.stereotype.Component;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import java.net.InetSocketAddress;
@Component
public class NettyServer {
/*private int port =8080;
public int getPort() {
return port;
}
public void setPort(int port) {
this.port = port;
}
public NettyServer(int port) {
this.port = port;
}*/
@PostConstruct
public void start() throws Exception {
System.out.println("啟動記載netty");
EventLoopGroup boss = new NioEventLoopGroup();
EventLoopGroup work = new NioEventLoopGroup();
ServerBootstrap b = new ServerBootstrap();
b.group(boss,work)
.channel(NioServerSocketChannel.class)
.localAddress(new InetSocketAddress(8082))
.childHandler(new ChannelInitializer<SocketChannel>() {
@Override
protected void initChannel(SocketChannel ch) throws Exception {
ch.pipeline().addLast(new EchoServerHandler());
}
});
System.out.println("啟動加載netty2");
ChannelFuture channelFuturef = b.bind().sync();
if (channelFuturef.isSuccess()){
System.out.println("啟動成功");
}
}
}點擊啟動：
看日志：
說明已經啟動
那么這個注解為什么這么神奇呢：
大概的意思，大家看下，意思就是這個方法會隨著類的加載而加載，初始化加載的意思：
@Documented
@Retention (RUNTIME)
@Target(METHOD)
public @interface PostConstruct {
}package com.cxy.netty.controller;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
/**
* 系統初始化監聽器
* @author Administrator
*
*/
public class InitListener implements ServletContextListener {
@Override
public void contextInitialized(ServletContextEvent sce) {
NettyServer nettyServer = new NettyServer(8081);
try {
nettyServer.start();
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void contextDestroyed(ServletContextEvent sce) {
}
}啟動類：
package com.cxy.netty;
import com.cxy.netty.controller.InitListener;
import com.cxy.netty.controller.NettyServer;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletListenerRegistrationBean;
import org.springframework.context.annotation.Bean;
@SpringBootApplication
public class NettyApplication {
/**
* 注冊監聽器
* @return
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
@Bean
public ServletListenerRegistrationBean servletListenerRegistrationBean() {
ServletListenerRegistrationBean servletListenerRegistrationBean =
new ServletListenerRegistrationBean();
servletListenerRegistrationBean.setListener(new InitListener());
return servletListenerRegistrationBean;
}
public static void main(String[] args) {
SpringApplication.run(NettyApplication.class, args);
}
}看日志：
package com.cxy.netty.controller;
import com.cxy.netty.controller.NettyServer;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.stereotype.Component;
@Component
public class NettyBooter implements ApplicationListener<ContextRefreshedEvent> {
@Override
public void onApplicationEvent(ContextRefreshedEvent event) {
NettyServer nettyServer = new NettyServer(8081);
try {
nettyServer.start();
} catch (Exception e) {
e.printStackTrace();
}
}
}啟動類：
package com.cxy.netty;
import com.cxy.netty.controller.NettyServer;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletListenerRegistrationBean;
import org.springframework.context.annotation.Bean;
@SpringBootApplication
public class NettyApplication {
/**
* 注冊監聽器
* @return
*/
/* @SuppressWarnings({ "rawtypes", "unchecked" })
@Bean
public ServletListenerRegistrationBean servletListenerRegistrationBean() {
ServletListenerRegistrationBean servletListenerRegistrationBean =
new ServletListenerRegistrationBean();
servletListenerRegistrationBean.setListener(new InitListener());
return servletListenerRegistrationBean;
}*/
public static void main(String[] args) {
SpringApplication.run(NettyApplication.class, args);
}
}看啟動日志：
package com.cxy.netty;
import com.cxy.netty.controller.NettyServer;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletListenerRegistrationBean;
import org.springframework.context.annotation.Bean;
/*
@SpringBootApplication
public class NettyApplication {
*/
/**
* 注冊監聽器
* @return
*//*
*/
/* @SuppressWarnings({ "rawtypes", "unchecked" })
@Bean
public ServletListenerRegistrationBean servletListenerRegistrationBean() {
ServletListenerRegistrationBean servletListenerRegistrationBean =
new ServletListenerRegistrationBean();
servletListenerRegistrationBean.setListener(new InitListener());
return servletListenerRegistrationBean;
}*//*
public static void main(String[] args) {
SpringApplication.run(NettyApplication.class, args);
}
}
*/
@SpringBootApplication
public class NettyApplication implements CommandLineRunner {
public static void main(String[] args) {
SpringApplication.run(NettyApplication.class, args);
}
@Override
public void run(String... args) throws Exception {
NettyServer echoServer = new NettyServer(8083);
echoServer.start();
}
}看日志：
到此，相信大家對“springboot整合netty框架的方式有哪些”有了更深的了解，不妨來實際操作一番吧！這里是億速云網站，更多相關內容可以進入相關頻道進行查詢，關注我們，繼續學習！
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