修改spring boot默认的8080端口为其它端口

import javafx.application.Application;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;
import org.springframework.boot.context.web.SpringBootServletInitializer;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@EnableAutoConfiguration
public class TestClass extends SpringBootServletInitializer implements EmbeddedServletContainerCustomizer{
@RequestMapping("/")
String home() {
return "hi...";
}

public static void main(String[] args) {
SpringApplication.run(TestClass.class, args);
}

@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(Application.class);
}

@Override
public void customize(ConfigurableEmbeddedServletContainer container) {
container.setPort(8081);
}
}

方法二：更加简单

在src/resource下增加文件application.properties

加入server.port=8081

即可