content: package com.spring4all.config;
  
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.context.annotation.Bean;
  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;
  import org.springframework.security.crypto.password.NoOpPasswordEncoder;
  import org.springframework.security.crypto.password.PasswordEncoder;
  
  @EnableWebSecurity
  public class WebSecurityConfig extends WebSecurityConfigurerAdapter{
  
      private DbUserDetailsService dbUserDetailsService;
  
      @Autowired
      public void setAnyUserDetailsService(DbUserDetailsService dbUserDetailsService){
          this.dbUserDetailsService = dbUserDetailsService;
      }
  
      /**
       * 匹配 "/" 路径，不需要权限即可访问
       * 匹配 "/user" 及其以下所有路径，都需要 "USER" 权限
       * 登录地址为 "/login"，登录成功默认跳转到页面 "/user"
       * 退出登录的地址为 "/logout"，退出成功后跳转到页面 "/login"
       * 默认启用 CSRF
       */
      @Override
      protected void configure(HttpSecurity http) throws Exception {
          http
                  .authorizeRequests()
                  .antMatchers("/").permitAll()
                  .antMatchers("/user/**").hasAuthority("USER")
                  .and()
                  .formLogin().loginPage("/login").defaultSuccessUrl("/user")
                  .and()
                  .logout().logoutUrl("/logout").logoutSuccessUrl("/login");
      }
  
      /**
       * 添加 UserDetailsService， 实现自定义登录校验
       */
      @Override
      protected void configure(AuthenticationManagerBuilder builder) throws Exception{
          builder.userDetailsService(dbUserDetailsService);
      }
  
      @Bean
      public static PasswordEncoder passwordEncoder() {
          return NoOpPasswordEncoder.getInstance();
      }
  
  }
  