1、在eureka服务器的pom.xml中引入依赖：

	<!-- Spring Cloud Security 依赖 -->
	<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

2、创建密码安全认证密码匹配规则类MyPasswordEncoder.java：

package com.zero4j.config;

import org.springframework.security.crypto.password.PasswordEncoder;

public class MyPasswordEncoder implements PasswordEncoder {

	@Override
    public String encode(CharSequence charSequence) {
        return charSequence.toString();
    }

    @Override
    public boolean matches(CharSequence charSequence, String s) {
        return s.equals(charSequence.toString());
    }
    
}

3、在eureka服务器中创建配置类SecurityConfig.java：

package com.zero4j.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.factory.PasswordEncoderFactories;
import org.springframework.security.crypto.password.PasswordEncoder;
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 SecurityConfig extends WebSecurityConfigurerAdapter {
    
	@Bean
    public PasswordEncoder passwordEncoder() {
        return PasswordEncoderFactories.createDelegatingPasswordEncoder();
    }
    
    //@Autowired
    //BCryptPasswordEncoder passwordEncoder;

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
    	
    	//以前可以不指定PasswordEncoder,但是新的SpringBoot依赖的SpringCloudScurity需要了
    	//auth.inMemoryAuthentication().withUser("admin").password("123456").roles("ADMIN");
    	//这样，密码以明文的方式进行匹配
    	auth.inMemoryAuthentication().passwordEncoder(new MyPasswordEncoder()).withUser("admin").password("123456").roles("ADMIN");
    	//auth.inMemoryAuthentication().withUser("admin").password(passwordEncoder.encode("123456")).roles("ADMIN");
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.csrf().ignoringAntMatchers("/eureka/**");
        super.configure(http);
    }
}

4、启动服务，访问eureka服务中心，使用admin:123456进行登录，成功进入eureka控制台

5、对微服务提供者的application.propertites说引用的eureka服务中心地址的前面加入“admin:123456@”，如：http\://admin:123456@localhost\:8761/eureka/ ，然后启动即可~