Spring security用户认证（设置用户名密码）

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*/@Overrideprotected 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*/@Beanpublic 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 {@Autowiredprivate UserDetailsService userDetailsService;/**** 设置登录的用户* @param auth* @throws Exception*/@Overrideprotected 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*/@Beanpublic 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 {@Overridepublic 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 authorityList = AuthorityUtils.commaSeparatedStringToAuthorityList("role");return new User("admin",new BCryptPasswordEncoder().encode("123456"),authorityList);}
}

3.4、启动项目访问

  

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