SpringBoot集成Spring Security（1）——入门程序

CREATE TABLE `sys_user` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(255) NOT NULL,
`password` varchar(255) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

CREATE TABLE `sys_role` (
`id` int(11) NOT NULL,
`name` varchar(255) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

CREATE TABLE `sys_user_role` (
`user_id` int(11) NOT NULL,
`role_id` int(11) NOT NULL,
PRIMARY KEY (`user_id`,`role_id`),
KEY `fk_role_id` (`role_id`),
CONSTRAINT `fk_role_id` FOREIGN KEY (`role_id`) REFERENCES `sys_role` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT `fk_user_id` FOREIGN KEY (`user_id`) REFERENCES `sys_user` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

INSERT INTO `sys_role` VALUES (‘1‘, ‘ROLE_ADMIN‘);
INSERT INTO `sys_role` VALUES (‘2‘, ‘ROLE_USER‘);

INSERT INTO `sys_user` VALUES (‘1‘, ‘admin‘, ‘123‘);
INSERT INTO `sys_user` VALUES (‘2‘, ‘jitwxs‘, ‘123‘);

INSERT INTO `sys_user_role` VALUES (‘1‘, ‘1‘);
INSERT INTO `sys_user_role` VALUES (‘2‘, ‘2‘);

@Mapper
public interface SysUserMapper {
@Select("SELECT * FROM sys_user WHERE id = #{id}")
SysUser selectById(Integer id);

@Select("SELECT * FROM sys_user WHERE name = #{name}")
SysUser selectByName(String name);
}

@Mapper
public interface SysRoleMapper {
@Select("SELECT * FROM sys_role WHERE id = #{id}")
SysRole selectById(Integer id);
}

@Controller
public class LoginController {
private Logger logger = LoggerFactory.getLogger(LoginController.class);

@RequestMapping("/")
public String showHome() {
String name = SecurityContextHolder.getContext().getAuthentication().getName();
logger.info("当前登陆用户：" + name);

return "home.html";
}

@RequestMapping("/login")
public String showLogin() {
return "login.html";
}

@RequestMapping("/admin")
@ResponseBody
@PreAuthorize("hasRole(‘ROLE_ADMIN‘)")
public String printAdmin() {
return "如果你看见这句话，说明你有ROLE_ADMIN角色";
}

@RequestMapping("/user")
@ResponseBody
@PreAuthorize("hasRole(‘ROLE_USER‘)")
public String printUser() {
return "如果你看见这句话，说明你有ROLE_USER角色";
}
}

@Service("userDetailsService")
public class CustomUserDetailsService implements UserDetailsService {
@Autowired
private SysUserService userService;

@Autowired
private SysRoleService roleService;

@Autowired
private SysUserRoleService userRoleService;

@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
Collection<GrantedAuthority> authorities = new ArrayList<>();
// 从数据库中取出用户信息
SysUser user = userService.selectByName(username);

// 判断用户是否存在
if(user == null) {
throw new UsernameNotFoundException("用户名不存在");
}

// 添加权限
List<SysUserRole> userRoles = userRoleService.listByUserId(user.getId());
for (SysUserRole userRole : userRoles) {
SysRole role = roleService.selectById(userRole.getRoleId());
authorities.add(new SimpleGrantedAuthority(role.getName()));
}

// 返回UserDetails实现类
return new User(user.getName(), user.getPassword(), authorities);
}
}

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private CustomUserDetailsService userDetailsService;

@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(userDetailsService).passwordEncoder(new PasswordEncoder() {
@Override
public String encode(CharSequence charSequence) {
return charSequence.toString();
}

@Override
public boolean matches(CharSequence charSequence, String s) {
return s.equals(charSequence.toString());
}
});
}

@Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests()
// 如果有允许匿名的url，填在下面
// .antMatchers().permitAll()
.anyRequest().authenticated()
.and()
// 设置登陆页
.formLogin().loginPage("/login")
// 设置登陆成功页
.defaultSuccessUrl("/").permitAll()
// 自定义登陆用户名和密码参数，默认为username和password
// .usernameParameter("username")
// .passwordParameter("password")
.and()
.logout().permitAll();

// 关闭CSRF跨域
http.csrf().disable();
}

@Override
public void configure(WebSecurity web) throws Exception {
// 设置拦截忽略文件夹，可以对静态资源放行
web.ignoring().antMatchers("/css/**", "/js/**");
}
}