7款Java 微服务框架

以下是针对如何选择合适的Java微服务框架的示例代码。这些代码示例展示了如何在Java中使用不同的微服务框架来创建RESTful API。

1. Spring Boot:

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
 
@SpringBootApplication
@RestController
public class SpringBootApplicationExample {
 
    @GetMapping("/")
    public String hello() {
        return "Hello, Spring Boot!";
    }
 
    public static void main(String[] args) {
        SpringApplication.run(SpringBootApplicationExample.class, args);
    }
}

2. Spring Cloud:

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
 
@SpringBootApplication
@EnableDiscoveryClient
@RestController
public class SpringCloudApplicationExample {
 
    @GetMapping("/")
    public String hello() {
        return "Hello, Spring Cloud!";
    }
 
    public static void main(String[] args) {
        SpringApplication.run(SpringCloudApplicationExample.class, args);
    }
}

3. Dropwizard:

import io.dropwizard.Application;
import io.dropwizard.setup.Bootstrap;
import io.dropwizard.setup.Environment;
import javax.servlet.ServletException;
import java.util.EnumSet;
 
public class DropwizardApplicationExample extends Application<DropwizardConfiguration> {
 
    @Override
    public void initialize(Bootstrap<DropwizardConfiguration> bootstrap) {
        // nothing to do yet
    }
 
    @Override
    public void run(DropwizardConfiguration configuration, Environment environment) throws ServletException {
        environment.jersey().register(new HelloWorldResource());
    }
 
    public static void main(String[] args) throws Exception {
        new DropwizardApplicationExample().run(args);
    }
}
 
class HelloWorldResource {
    @GET
    @Path("/hello-world")
    @Produces(MediaType.TEXT_PLAIN)
    public String helloWorld() {
        return "Hello, Dropwizard!";
    }
}
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