springboot集成ldap

在 Spring Boot 中，可以使用 Spring LDAP 来实现 LDAP 认证。具体步骤如下：

1. 配置 pom.xml，引入 Spring LDAP 相关依赖：

<dependency>
    <groupId>org.springframework.ldap</groupId>
    <artifactId>spring-ldap-core</artifactId>
    <version>${spring-ldap.version}</version>
</dependency>

2. 配置 application.yml，设置 LDAP 连接信息：

spring:
  ldap:
    urls: ldap://localhost:389
    base: dc=my-domain,dc=com
    username: cn=Manager,dc=my-domain,dc=com
    password: password

3. 实现 LdapUserDetailsMapper，将 LDAP 用户信息映射为 Spring Security User 对象：

@Component
public class LdapUserDetailsMapper implements UserDetailsContextMapper {

    @Override
    public UserDetails mapUserFromContext(DirContextOperations ctx, String username,
            Collection<? extends GrantedAuthority> authorities) {
        String password = (String) ctx.getObjectAttribute("userPassword");

        List<GrantedAuthority> grantedAuthorities = new ArrayList<>();
        for (GrantedAuthority authority : authorities) {
            grantedAuthorities.add(new SimpleGrantedAuthority(authority.getAuthority()));
        }

        return new User(username, password, grantedAuthorities);
    }

    @Override
    public void mapUserToContext(UserDetails user, DirContextAdapter ctx) {
        throw new UnsupportedOperationException("Not supported yet.");
    }
}

这里将 LDAP 中的 "userPassword" 属性作为密码，LDAP 中的权限信息作为 Spring Security 的 GrantedAuthority 对象，最终将它们封装为一个 User 对象。

4. 配置 WebSecurityConfigurerAdapter，实现 LDAP 认证：

@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private LdapUserDetailsMapper ldapUserDetailsMapper;

    @Autowired
    private Environment env;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .antMatchers("/admin/**").hasRole("ADMIN")
                .antMatchers("/user/**").hasRole("USER")
                .anyRequest().authenticated()
                .and()
                .formLogin()
                .and()
                .logout();

        http.csrf().disable();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.ldapAuthentication()
                .userSearchBase(env.getProperty("spring.ldap.user-search-base"))
                .userSearchFilter(env.getProperty("spring.ldap.user-search-filter"))
                .groupSearchBase(env.getProperty("spring.ldap.group-search-base"))
                .groupSearchFilter(env.getProperty("spring.ldap.group-search-filter"))
                .contextSource()
                .url(env.getProperty("spring.ldap.urls"))
                .managerDn(env.getProperty("spring.ldap.username"))
                .managerPassword(env.getProperty("spring.ldap.password"))
                .and()
                .userDetailsContextMapper(ldapUserDetailsMapper);
    }
}

这样就可以通过 LDAP 认证来控制访问权限了。在这个例子中，请求 "/admin/**" 的用户需要拥有 ADMIN 角色，请求 "/user/**" 的用户需要拥有 USER 角色，其他请求需要认证通过即可访问。