eureka server 开启认证

https://cloud.spring.io/spring-cloud-static/Greenwich.RELEASE/single/spring-cloud.html#_securing_the_eureka_server

https://docs.spring.io/spring-security/site/docs/5.2.15.RELEASE/reference/html5/

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

import org.springframework.boot.SpringApplication;
import org.springframework.boot.actuate.autoconfigure.security.servlet.ManagementWebSecurityAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@SpringBootApplication(exclude= {SecurityAutoConfiguration.class, ManagementWebSecurityAutoConfiguration.class})
@EnableEurekaServer
public class EurekaServerApplication {

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

}

红字部分是要禁止自动配置，这里要实现的是根据serviceUrl 自动识别是否开启认证

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
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;
import org.springframework.security.config.http.SessionCreationPolicy;

import cn.xs.ambi.bas.log.Log;
import cn.xs.ambi.bas.log.LogFactory;

@EnableWebSecurity
@ConditionalOnExpression("('${eureka.client.serviceUrl.defaultZone}').contains('@')")
class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    
    private final Log log = LogFactory.getLog(WebSecurityConfig.class);

    // http://zhangsan:123456@localhost:9002/eureka
    @Value("${eureka.client.serviceUrl.defaultZone}")
    private String serviceUrl;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.NEVER);
        http.csrf().disable();
        http.authorizeRequests().antMatchers("/ping").permitAll().antMatchers("/**").authenticated().and().httpBasic();
    }

    @SuppressWarnings("deprecation")
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        log.info("serviceUrl[{}]", serviceUrl);
        String pair = serviceUrl.split(",")[0].split("@")[0].split("//")[1];
        String username = pair.split(":")[0];
        String password = pair.split(":")[1];
        auth.inMemoryAuthentication()
                .passwordEncoder(org.springframework.security.crypto.password.NoOpPasswordEncoder.getInstance())
                .withUser(username).password(password).roles("USER");
    }
}

注意心跳要放前面，其他都需要认证

关键代码spel表达式，这里取到属性值后判断是否是认证格式

@ConditionalOnExpression("('${eureka.client.serviceUrl.defaultZone}').contains('@')")

Authenticating with the Eureka Server

HTTP basic authentication is automatically added to your eureka client if one of the eureka.client.serviceUrl.defaultZone URLs has credentials embedded in it (curl style, as follows: http://user:password@localhost:8761/eureka). For more complex needs, you can create a @Bean of type DiscoveryClientOptionalArgs and inject ClientFilter instances into it, all of which is applied to the calls from the client to the server.