Spring Security PasswordEncoder密码加密实现过程讲解

package com.xwd.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
@Configuration
public class SpringSecurityConfig extends WebSecurityConfigurerAdapter {
    //properties
    //methods
    
    @Bean
    public PasswordEncoder getBCryptPasswordEncoder(){
        return new BCryptPasswordEncoder();
    }
}

public interface PasswordEncoder {
    ...
}

public interface PasswordEncoder {
	
	String encode(CharSequence rawPassword);
	
	boolean matches(CharSequence rawPassword, String encodedPassword);
	
	default boolean upgradeEncoding(String encodedPassword) {
		return false;
	}
}

	private String getSalt() {
		if (this.random != null) {
			return BCrypt.gensalt(this.version.getVersion(), this.strength, this.random);
		}
		return BCrypt.gensalt(this.version.getVersion(), this.strength);
	}

 
    public static String encryptPassword(String password)
    {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.encode(password);
    }
    
    public static boolean matchesPassword(String rawPassword, String encodedPassword)
    {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.matches(rawPassword, encodedPassword);
    }

@SpringBootTest
@RunWith(SpringRunner.class)
public class SpringBoot_Demo_Test {
    //properties
    @Autowired
    @Qualifier(value = "BCryptPasswordEncoder") //Bean实例注入已经在本部分开头进行介绍
    private PasswordEncoder passwordEncoder;
    //methods
    @Test
    public void BCryptPasswordEncoder_test(){
        
        String encode = passwordEncoder.encode("123456");//密码加密操作-将加密之后的结果存储到数据库中
        String encode1 = passwordEncoder.encode("123456");
        System.out.println(encode); // $2a$10$J0HqjTj2g98KceRapnRqW.Y4uQkPzGASFstgx1yba2JQG1muHj7L2
        System.out.println(encode1); //$2a$10$foxH4yrARWiaWwxyTXjFMOkSqkiOXsMaiQ6/oWbxxond5/BZqi1ke
        
        boolean matches = passwordEncoder.matches("123456", "$2a$10$foxH4yrARWiaWwxyTXjFMOkSqkiOXsMaiQ6/oWbxxond5/BZqi1ke");
        System.out.println("检验结果:"+matches); //检验结果:true
    }
}