content: package com.us.example.config;
  
  import com.us.example.security.CustomUserService;
  import com.us.example.util.MD5Util;
  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.builders.HttpSecurity;
  import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
  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;
  
  /**
   * Created by yangyibo on 17/1/18.
   */
  @Configuration
  @EnableWebSecurity
  public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
  
      @Bean
      UserDetailsService customUserService(){ //注册UserDetailsService 的bean
          return new CustomUserService();
      }
  
      @Override
      protected void configure(AuthenticationManagerBuilder auth) throws Exception {
          auth.userDetailsService(customUserService()).passwordEncoder(new PasswordEncoder(){
  
              @Override
              public String encode(CharSequence rawPassword) {
                  return MD5Util.encode((String)rawPassword);
              }
  
              @Override
              public boolean matches(CharSequence rawPassword, String encodedPassword) {
                  return encodedPassword.equals(MD5Util.encode((String)rawPassword));
              }}); //user Details Service验证
      }
  
      @Override
      protected void configure(HttpSecurity http) throws Exception {
          http.authorizeRequests()
                  .anyRequest().authenticated() //任何请求,登录后可以访问
                  .and()
                  .formLogin()
                  .loginPage("/login")
                  .failureUrl("/login?error")
                  .permitAll() //登录页面用户任意访问
                  .and()
                  .logout().permitAll(); //注销行为任意访问
  
  
      }
  
  
  
  }
  
  