spring Securityのユーザー認証プロセスの詳細

<http pattern="/*.html" security="none"/>
  <http pattern="/css/**" security="none"/>
  <http pattern="/img/**" security="none"/>
  <http pattern="/js/**" security="none"/>
  <http pattern="/plugins/**" security="none"/>
  <http pattern="/seller/add.do" security="none"/>

  <!-- use-expressions:      SpEL   ，    true。 -->
  <http use-expressions="false">
    <!--
        SpringSecurity     （    ）
      * pattern:      。  /*              （      ） /**             （     ）
      * access:          ROLE_      ： ROLE_USER
    -->
    <intercept-url pattern="/**" access="ROLE_SELLER"/>

    <!--
          
      username-parameter="username"
      password-parameter="password"
      login-page      :         /   
      default-target-url  :          
      login-processing-url:            "/login"     
    -->
    <form-login login-page="/shoplogin.html" default-target-url="/admin/index.html" always-use-default-target="true" authentication-failure-url="/shoplogin.html"/>

    <!--    csrf    -->
    <csrf disabled="true"/>

    <!--           -->
    <headers>
      <frame-options policy="SAMEORIGIN"/>
    </headers>

    <!--       -->
    <logout logout-url="/logout" logout-success-url="/shoplogin.html" />
  </http>

  <!--         -->
  <authentication-manager>
    <!--        -->
    <authentication-provider user-service-ref="userDetailService">
      <password-encoder ref="passwordEncoder"></password-encoder>
    </authentication-provider>
  </authentication-manager>
<!--           -->
  <beans:bean id="userDetailService" class="com.qingmu2.core.service.UserDetailServiceImpl">
    <beans:property name="sellerService" ref="sellerService"></beans:property>
  </beans:bean>

<!--          BCryptPasswordEncoder-->
  <beans:bean id="passwordEncoder" class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder"/>

package com.qingmu2.core.service;
import com.alibaba.dubbo.config.annotation.Reference;
import com.qingmu2.core.pojo.seller.Seller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
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 java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;

/**
 *        
 * @Auther:qingmu
 * @Description:    ,      
 * @Date:Created in 8:33 2019/5/31
 */
public class UserDetailServiceImpl implements UserDetailsService {

  private SellerService sellerService;

  public UserDetailServiceImpl() {
  }
  @Override
  public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
    Seller seller = sellerService.findOne(username);
    if(null!=seller){
      //             .
      if("1".equals(seller.getStatus())){
        //      ,      
        HashSet<GrantedAuthority> authorities = new HashSet<>();
        authorities.add(new SimpleGrantedAuthority("ROLE_SELLER"));
        //              
        return new User(username,seller.getPassword(),authorities);
      }
    }
    //      ,   null
    return null;
  }

  public UserDetailServiceImpl(SellerService sellerService) {
    this.sellerService = sellerService;
  }

  public SellerService getSellerService() {
    return sellerService;
  }

  public void setSellerService(SellerService sellerService) {
    this.sellerService = sellerService;
  }
}