springmvc内嵌tomcat

1.pom.xml

<?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>
    <groupId>com.gzz</groupId>
    <artifactId>03-spring-mvc-tomcat</artifactId>
    <version>1.0.0</version>
    <packaging>jar</packaging>
    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.3.14</version>
        </dependency>
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-core</artifactId>
            <version>9.0.56</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

2.配置类

package com.gzz.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

@Configuration
@ComponentScan("com.gzz")
public class AutoConfig {
}

3.启动类

package com.gzz;

import java.io.File;
import org.apache.catalina.Context;
import org.apache.catalina.Server;
import org.apache.catalina.connector.Connector;
import org.apache.catalina.startup.Tomcat;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
import com.gzz.config.AutoConfig;

public class Application {

    public static void main(String[] args) throws Exception {
        AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
        context.register(AutoConfig.class);
        context.refresh();

        Tomcat tomcat = new Tomcat();
        Context context1 = tomcat.addContext("/", new File(System.getProperty("java.io.tmpdir")).getAbsolutePath());
        Tomcat.addServlet(context1, "my", new DispatcherServlet(context)).setLoadOnStartup(1);
        context1.addServletMappingDecoded("/", "my");
        
        Server server = tomcat.getServer();
        Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
        connector.setPort(8080);
        connector.setThrowOnFailure(true);
        tomcat.getService().addConnector(connector);
        tomcat.setConnector(connector);
        tomcat.start();
        server.await();
    }

}

4.Controller

package com.gzz.sys.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class UserController {
    @GetMapping("hello")
    public String index() {
        return "hello";
    }
}