Spring security用户认证（设置用户名密码）

Posted 2021-08-15 爱上口袋的天空

1、通过配置文件实现设置用户名密码

重新启动我们的服务：

 

 

 

2、通过配置类继承接口实现设置用户名密码

2.1、创建一个SecurityConfig配置类

 2.2、代码

package com.kgf.security.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
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 SecurityConfig extends WebSecurityConfigurerAdapter {

    /***
     * 设置登录的用户
     * @param auth
     * @throws Exception
     */
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        //用来加密
        BCryptPasswordEncoder encoder = new BCryptPasswordEncoder();
        String password = encoder.encode("123456");
        auth.inMemoryAuthentication().withUser("test").password(password).roles("admin");
    }

    /***
     * 注入PasswordEncoder到spring中
     * @return
     */
    @Bean
    public PasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }
}

启动后，登录

 

3、通过自定义UserDetailsService的实现类设置用户名密码

3.1、项目结构如下

 

3.2、查看我们的SecurityConfig配置类

package com.kgf.security.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;

@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private UserDetailsService userDetailsService;


    /***
     * 设置登录的用户
     * @param auth
     * @throws Exception
     */
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        //这是使用内存的方式
//        BCryptPasswordEncoder encoder = new BCryptPasswordEncoder();
//        String password = encoder.encode("123456");
//        auth.inMemoryAuthentication().withUser("test").password(password).roles("admin");
        //下面使用自定义接口实现类从数据库查询
        auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder());
    }

    /***
     * 注入PasswordEncoder到spring中
     * @return
     */
    @Bean
    public PasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }
}

3.3、查看我们自定义的MyUserDetailsService类

package com.kgf.security.service;

import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.stereotype.Service;

import java.util.List;

/***
 * spring security查询用户的时候会自动到这个类中去查找
 */
@Service("userDetailsService")
public class MyUserDetailsService implements UserDetailsService {


    @Override
    public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException {
        //这里我们就不去查询数据库了，直接new一个对象
        List<GrantedAuthority> authorityList = AuthorityUtils.commaSeparatedStringToAuthorityList("role");
        return new User("admin",new BCryptPasswordEncoder().encode("123456"),authorityList);
    }
}

3.4、启动项目访问