spring boot rest 接口集成 spring security(2) - JWT配置

时间:2023-03-08 16:19:55

Spring Boot 集成教程


在教程 [spring boot rest 接口集成 spring security(1) - 最简配置] 里介绍了最简集成spring security的过程,本文将继续介绍spring boot项目中集成spring security以及配置jwt的过程。

如果不了解jwt,可以参考5分钟搞懂:JWT(Json Web Token)

项目内容

本文将通过创建一个实际的spring boot项目来演示spring security及jwt的配置过程,项目主要内容:

  • 集成spring security;
  • 配置jwt;
  • 加载用户信息;
  • 实现几个接口,配置访问权限;
  • 最后通过Postman测试接口;

要求

  • JDK1.8或更新版本
  • Eclipse开发环境

如没有开发环境,可参考前面章节 [spring boot 开发环境搭建(Eclipse)]。

项目创建

创建spring boot项目

打开Eclipse,创建spring boot的spring starter project项目,选择菜单:File > New > Project ...,弹出对话框,选择:Spring Boot > Spring Starter Project,在配置依赖时,勾选web, security,完成项目创建。

spring boot rest 接口集成 spring security(2) - JWT配置

项目依赖

要使用jwt,引入jwt jar包

		<!-- https://mvnrepository.com/artifact/io.jsonwebtoken/jjwt -->
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.1</version>
</dependency>

项目配置

application.properties配置

## 服务器端口,如果不配置默认是8080端口
server.port=8096 ## jwt配置
# 签名密钥
jwt.secret=my_secret_2019
# jwt有效期(秒)
jwt.expiration=1800

代码实现

项目目录结构如下图,我们添加了几个类,下面将详细介绍。

spring boot rest 接口集成 spring security(2) - JWT配置

spring security的配置:SecurityConfig.java

这是spring security的java配置类,几个主要的配置:

  • 用户信息加载配置
  • 权限不足处理配置
  • 权限配置
  • jwt过滤器配置
  • 其他如密码加密,CORS等配置

@Configuration
@EnableWebSecurity // 添加security过滤器
@EnableGlobalMethodSecurity(prePostEnabled = true) // 可以在controller方法上配置权限
public class SecurityConfig extends WebSecurityConfigurerAdapter{ // 加载用户信息
@Autowired
private UserDetailsService myUserDetailsService; // 权限不足错误信息处理,包含认证错误与鉴权错误处理
@Autowired
private JwtAuthError myAuthErrorHandler; // 密码明文加密方式配置
@Bean
public PasswordEncoder myEncoder() {
return new BCryptPasswordEncoder();
} // jwt校验过滤器,从http头部Authorization字段读取token并校验
@Bean
public JwtAuthFilter myAuthFilter() throws Exception {
return new JwtAuthFilter();
} // 获取AuthenticationManager(认证管理器),可以在其他地方使用
@Bean(name="authenticationManagerBean")
@Override
public AuthenticationManager authenticationManagerBean() throws Exception {
return super.authenticationManagerBean();
} // 认证用户时用户信息加载配置,注入myUserDetailsService
@Override
public void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(myUserDetailsService);
} // 配置http,包含权限配置
@Override
protected void configure(HttpSecurity http) throws Exception {
http // 由于使用的是JWT,我们这里不需要csrf
.csrf().disable() // 基于token,所以不需要session
.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and() // 设置myUnauthorizedHandler处理认证失败、鉴权失败
.exceptionHandling().authenticationEntryPoint(myAuthErrorHandler).accessDeniedHandler(myAuthErrorHandler).and() // 设置权限
.authorizeRequests() // 需要登录
.antMatchers("/hello/hello1").authenticated() // 需要角色权限
.antMatchers("/hello/hello2").hasRole("ADMIN") // 除上面外的所有请求全部放开
.anyRequest().permitAll(); // 添加JWT过滤器,JWT过滤器在用户名密码认证过滤器之前
http.addFilterBefore(myAuthFilter(), UsernamePasswordAuthenticationFilter.class); // 禁用缓存
// http.headers().cacheControl();
} // 配置跨源访问(CORS)
@Bean
CorsConfigurationSource corsConfigurationSource() {
UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
source.registerCorsConfiguration("/**", new CorsConfiguration().applyPermitDefaultValues());
return source;
}
}

用户信息及用户信息服务:AuthUser.java,AuthUserService.java

加载用户信息,需要用户信息类及用户信息服务类。AuthUser继承spring的UserDetails,必须重写UserDetails的一些标准接口。注意与实体类User区别。


public class AuthUser implements UserDetails { private static final long serialVersionUID = -2336372258701871345L; //用户实体类
private User user; public AuthUser(User user) {
this.setUser(user);
} public static Collection<? extends GrantedAuthority> getAuthoritiesByRole(String role) {
Set<GrantedAuthority> authorities = new HashSet<GrantedAuthority>(); List<String> roles = Arrays.asList(role.split(","));
if (roles.contains("user")) {
authorities.add(new SimpleGrantedAuthority("ROLE_USER"));
}
if (roles.contains("admin")) {
authorities.add(new SimpleGrantedAuthority("ROLE_ADMIN"));
} return authorities;
} // 提供权限信息
@Override
public Collection<? extends GrantedAuthority> getAuthorities() { return getAuthoritiesByRole(getUser().getRole());
} // 提供账号名称
@Override
public String getUsername() {
return getUser().getMobile();
} // 提供密码
@Override
public String getPassword() {
return getUser().getPassword();
} // 账号是否没过期,过期的用户无法认证
@Override
public boolean isAccountNonExpired() {
return true;
} // 账号是否没锁住,锁住的用户无法认证
@Override
public boolean isAccountNonLocked() {
return true;
} // 密码是否没过期,密码过期的用户无法认证
@Override
public boolean isCredentialsNonExpired() {
return true;
} // 用户是否使能,未使能的用户无法认证
@Override
public boolean isEnabled() {
return true;
} public User getUser() {
return user;
} public void setUser(User user) {
this.user = user;
} }

AuthUserService继承UserDetailsService,重写了加载用户信息接口:

@Service
public class AuthUserService implements UserDetailsService { // 加载用户信息
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { // 此处应从数据库加载用户信息,为简便起见,直接创建一个用户
// password的值:$2a$10$EmsokMb6Vkav7m61kY0PtO.ZCLe0h.uJqVAZW7YYBpSUxd/DMkZuG,
// 是明文123456使用BCryptPasswordEncoder加密的值
User user = new User(1l, "abc1", username, "$2a$10$EmsokMb6Vkav7m61kY0PtO.ZCLe0h.uJqVAZW7YYBpSUxd/DMkZuG", "user");
AuthUser authUser = new AuthUser(user); return (UserDetails) authUser;
}
}

认证失败、鉴权失败处理:JwtAuthError.java

当认证失败,系统会抛出认证失败异常,可以配置我们自己的认证失败处理类,同样鉴权失败也可以配置我们自己的失败处理类。

JwtAuthError继承AuthenticationEntryPoint(认证失败接口)、AccessDeniedHandler(鉴权失败接口),重写了这2个接口类的失败处理方法,其实JwtAuthError可以分为2个类,我们合二为一了。

@Component
public class JwtAuthError implements AuthenticationEntryPoint, AccessDeniedHandler { @SuppressWarnings("unused")
private static final org.slf4j.Logger log = LoggerFactory.getLogger(JwtAuthError.class); // 认证失败处理,返回401 json数据
@Override
public void commence(HttpServletRequest request,
HttpServletResponse response,
AuthenticationException authException) throws IOException { response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
response.setContentType("application/json;charset=utf-8");
response.getWriter().write("{\"status\":401,\"message\":\"Unauthorized or invalid token\"}"); } // 鉴权失败处理,返回403 json数据
@Override
public void handle(HttpServletRequest request, HttpServletResponse response,
AccessDeniedException accessDeniedException) throws IOException, ServletException { response.setStatus(HttpServletResponse.SC_FORBIDDEN);
response.setContentType("application/json;charset=utf-8");
response.getWriter().write("{\"status\":403,\"message\":\"Forbidden\"}");
}
}

JWT过滤器

JWT过滤器每次请求应该只执行一次,所以继承OncePerRequestFilter,JWT过滤器的主要行为:

  • 对于每次请求,从http头部Authorization字段中读取jwt
  • 尝试解密jwt,如果正常解出,说明是合法用户
  • 如果是合法用户,设置认证信息,认证通过

@Component
public class JwtAuthFilter extends OncePerRequestFilter { private static final org.slf4j.Logger log = LoggerFactory.getLogger(JwtAuthFilter.class); @Autowired
private JwtUtil jwtUtil; private String tokenHeader="Authorization"; private String tokenPrefix="Bearer"; @Override
protected void doFilterInternal(
HttpServletRequest request,
HttpServletResponse response,
FilterChain chain) throws ServletException, IOException { // 从http头部读取jwt
String authHeader = request.getHeader(this.tokenHeader);
if (authHeader != null && authHeader.startsWith(tokenPrefix)) { final String authToken = authHeader.substring(tokenPrefix.length() + 1); // The part after "Bearer "
String username = null, role = null; // 从jwt中解出账号与角色信息
try {
username = jwtUtil.getUsernameFromToken(authToken);
role = jwtUtil.getClaimFromToken(authToken, "role", String.class);
} catch (Exception e) {
log.debug("异常详情", e);
log.info("无效token");
} // 如果jwt正确解出账号信息,说明是合法用户,设置认证信息,认证通过
if (username != null && SecurityContextHolder.getContext().getAuthentication() == null) { UsernamePasswordAuthenticationToken auth = new UsernamePasswordAuthenticationToken(
username, null, AuthUser.getAuthoritiesByRole(role)); // 把请求的信息设置到UsernamePasswordAuthenticationToken details对象里面,包括发请求的ip等
auth.setDetails(new WebAuthenticationDetailsSource().buildDetails(request)); // 设置认证信息
SecurityContextHolder.getContext().setAuthentication(auth); }
} // 调用下一个过滤器
chain.doFilter(request, response);
}
}

User实体类(model层)

User实体类对应于数据库中的User表(我们简化了,没有连数据库)


public class User {
private Long id; private String nickname; private String mobile; private String password; private String role; public User(Long id, String nickname, String mobile, String password, String role) {
this.id = id;
this.nickname = nickname;
this.mobile = mobile;
this.password = password;
this.role = role;
} public User() {
super();
}
}

LoginRequest类(model层)

登录请求类,这个类将会接受并校验用户登录时输入的账号密码,关于输入校验,可以参考 [spring boot输入数据校验(validation)]


public class LoginRequest { @SuppressWarnings("unused")
private static final org.slf4j.Logger log = LoggerFactory.getLogger(LoginRequest.class); @NotNull(message="账号必须填")
@Pattern(regexp = "^[1]([3][0-9]{1}|59|58|88|89)[0-9]{8}$", message="账号请输入11位手机号") // 手机号
private String account; @NotNull(message="密码必须填")
@Size(min=6, max=16, message="密码6~16位")
private String password; private boolean rememberMe; public String getAccount() {
return account;
}
public void setAccount(String account) {
this.account = account;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public boolean isRememberMe() {
return rememberMe;
}
public void setRememberMe(boolean rememberMe) {
this.rememberMe = rememberMe;
} }

AuthController类(控制层)

AuthController类实现了2个REST API:

  • login - 用户提供账号密码,如果密码正确,返回token,否则返回账号或密码错误提示;
  • refresh 输入一个合法的旧token,返回新token

@RestController
@RequestMapping("/auth")
public class AuthController { @Autowired
private AuthService authService; /**
* login
* @param authRequest
* @param bindingResult
* @return ResponseEntity<Result>
*/
@RequestMapping(value = "/login", method = RequestMethod.POST, produces="application/json")
public ResponseEntity<Result> login(@Valid @RequestBody LoginRequest authRequest, BindingResult bindingResult) throws AuthenticationException{ if(bindingResult.hasErrors()) {
Result res = MiscUtil.getValidateError(bindingResult);
return new ResponseEntity<Result>(res, HttpStatus.UNPROCESSABLE_ENTITY);
} final String token = authService.login(authRequest.getAccount(), authRequest.getPassword()); // Return the token
Result res = new Result(200, "ok");
res.putData("token", token);
return ResponseEntity.ok(res);
} /**
* refresh
* @param request
* @return ResponseEntity<Result>
*/
@RequestMapping(value = "/refresh", method = RequestMethod.GET, produces="application/json")
public ResponseEntity<Result> refresh(HttpServletRequest request, @RequestParam String token) throws AuthenticationException{ Result res = new Result(200, "ok"); String refreshedToken = authService.refresh(token); if(refreshedToken == null) {
res.setStatus(400);
res.setMessage("无效token");
return new ResponseEntity<Result>(res, HttpStatus.BAD_REQUEST);
} res.putData("token", token);
return ResponseEntity.ok(res);
} }

HelloController类(控制层)

实现了3个REST API:

  • hello1
  • hello2
  • hello3

用于测试权限配置


@RestController
@RequestMapping("/hello")
public class HelloController { @RequestMapping(value="/hello1", method=RequestMethod.GET)
public String hello1() { return "Hello1!";
} @RequestMapping(value="/hello2", method=RequestMethod.GET)
public String hello2() { return "Hello2!";
} @RequestMapping(value="/hello3", method=RequestMethod.GET)
public String hello3() { return "Hello3!";
}
}

AuthService接口与AuthServiceImpl实现类(服务层)

AuthService提供对AuthController的服务

AuthService.java

public interface AuthService {
User register(User userToAdd);
String login(String username, String password);
String refresh(String oldToken);
}

AuthServiceImpl.java


@Service
public class AuthServiceImpl implements AuthService { private static final org.slf4j.Logger log = LoggerFactory.getLogger(AuthServiceImpl.class); private AuthenticationManager authenticationManager;
private UserDetailsService userDetailsService;
private JwtUtil jwtUtil; @Autowired
public AuthServiceImpl(
AuthenticationManager authenticationManager,
UserDetailsService userDetailsService,
JwtUtil jwtUtil) {
this.authenticationManager = authenticationManager;
this.userDetailsService = userDetailsService;
this.jwtUtil = jwtUtil;
} @Override
public User register(User userToAdd) {
// TODO: 保存user到数据库
return null;
} @Override
public String login(String username, String password) {
// 认证用户,认证失败抛出异常,由JwtAuthError的commence类返回401
UsernamePasswordAuthenticationToken upToken = new UsernamePasswordAuthenticationToken(username, password);
final Authentication authentication = authenticationManager.authenticate(upToken);
SecurityContextHolder.getContext().setAuthentication(authentication); // 如果认证通过,返回jwt
final AuthUser userDetails = (AuthUser) userDetailsService.loadUserByUsername(username);
final String token = jwtUtil.generateToken(userDetails.getUser());
return token;
} @Override
public String refresh(String oldToken) {
String newToken = null; try {
newToken = jwtUtil.refreshToken(oldToken);
} catch (Exception e) {
log.debug("异常详情", e);
log.info("无效token");
}
return newToken;
}
}

其他

剩下的一些类

  • Result.java 结果封装类
  • MiscUtil.java 辅助类
  • JwtUtil.java jwt处理类,加密解密等操作

运行

Eclipse左侧,在项目根目录上点击鼠标右键弹出菜单,选择:run as -> spring boot app 运行程序。 打开Postman访问接口,运行结果如下:

访问/hello/hello1接口,需要登录访问,没有带上token,返回401

spring boot rest 接口集成 spring security(2) - JWT配置

登录获取token

spring boot rest 接口集成 spring security(2) - JWT配置

再次访问需要登录访问的/hello/hello1接口,带上token,可以看到访问成功

spring boot rest 接口集成 spring security(2) - JWT配置

访问需要admin权限的/hello/hello2接口,虽然带上token,但权限不足,可以看到返回403

spring boot rest 接口集成 spring security(2) - JWT配置

总结

完整代码