学习SPRING BOOT, SPRING CLOUD之Eureka和security

Posted 2020-09-09

有意思，明天去杨浦报名了一个SPRING CLOUD沙龙，

今天再抓紧看看哈哈哈。

Eureka服务端：

EurekaApplication.java

package com.packtpub.Eureka;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@EnableEurekaServer
@SpringBootApplication
public class EurekaApplication {

    public static void main(String[] args) {
        // SpringApplication.run(EurekaApplication.class, args);
        new SpringApplicationBuilder(EurekaApplication.class).web(true).run(args);
    }
}

application.properties

server.port=1111

eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
eureka.client.serviceUrl.defaultZone=http://localhost:${server.port}/eureka/

Eureka客户端：

package com.packtpub.EurekaClient;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;


@EnableDiscoveryClient
@SpringBootApplication
public class EurekaClientApplication {

    public static void main(String[] args) {
        //SpringApplication.run(EurekaClientApplication.class, args);
        new SpringApplicationBuilder(EurekaClientApplication.class).web(true).run(args);
    }
}

ComputerController.java

package com.packtpub.EurekaClient;



import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;


@RestController

public class ComputerController {
    private final Logger logger = Logger.getLogger(getClass());
    
    @Autowired
    private DiscoveryClient client;
    
    @RequestMapping(value="/add", method=RequestMethod.GET)
    
    public Integer add(@RequestParam Integer a, @RequestParam Integer b) {
        ServiceInstance instance = client.getLocalServiceInstance();
        Integer r = a + b;
        logger.info("/add, host:" + instance.getHost() + ", service_id:" + instance.getServiceId() + ", result:" + r);
        return r;
    }

}

WebSecurityConfig.java

package com.packtpub.EurekaClient;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;


@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
                .antMatchers("/", "home").permitAll()
                .anyRequest().authenticated()
                .and()
            .formLogin()
                .loginPage("/login")
                .permitAll()
                .and()
            .logout()
                .permitAll();
    }
    
    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth
            .inMemoryAuthentication()
                .withUser("user").password("password").roles("USER");
    }

}

HelloController.java

package com.packtpub.EurekaClient;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class HelloController {
    
    @RequestMapping("/")
    public String index() {
        return "index";
    }
    
    @RequestMapping("/hello")
    public String hello() {
        return "hello";
    }
    
    @RequestMapping("/login")
    public String login() {
        return "login";
    }

}

application.properties

spring.application.name=compute-service
server.port=2222
eureka.client.serviceUrl.defaultZone=http://localhost:1111/eureka/