环境
springboot 2.3.3
springSecurity 5.0
jjwt 0.91
pox.xml 文件主要信息
io.jsonwebtoken jjwt 0.9.1 org.springframework.boot spring-boot-starter-security org.springframework.boot spring-boot-starter-web
目录结构信息
请忽略文件命名
jwtAccessDeniedHandler 和 JwtAuthenticationEntryPoint
这两个类的作用是用户访问没有授权资源和携带错误token的错误返回处理信息类，要使用这两个类只需要在security的配置文件中配置一下就可以只用了
/**
* @author Bxsheng
* @blogAddress www.kdream.cn
* @createTIme 2020/9/17
* since JDK 1.8
* 当用户在没有授权的时候，返回的指定信息
*/
@Component
public class jwtAccessDeniedHandler implements AccessDeniedHandler {
@Override
public void handle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, AccessDeniedException e) throws IOException, ServletException {
System.out.println("用户访问没有授权资源");
System.out.println(e.getMessage());
httpServletResponse.sendError(HttpServletResponse.SC_UNAUTHORIZED, e==null?"用户访问没有授权资源":e.getMessage());
}
}/**
* @author Bxsheng
* @blogAddress www.kdream.cn
* @createTIme 2020/9/17
* since JDK 1.8
*/
@Component
public class JwtAuthenticationEntryPoint implements AuthenticationEntryPoint {
@Override
public void commence(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, AuthenticationException e) throws IOException, ServletException {
System.out.println("用户访问资源没有携带正确的token");
System.out.println(e.getMessage());
httpServletResponse.sendError(HttpServletResponse.SC_UNAUTHORIZED, e==null?"用户访问资源没有携带正确的token":e.getMessage());
}
}UserDetailsServiceImpl 登录信息验证
该类直接继承UserDetailsService 进行登录信息验证，在输入账户密码进行登录的时候，会进入这个类进行验证信息。
当然我这里是直接使用了写死的密码，正常应该从数据库中获取用户的信息和权限信息
@Service
public class UserDetailsServiceImpl implements UserDetailsService {
@Override
public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException {
//直接写死数据信息，可以在这里获取数据库的信息并进行验证
UserDetails userDetails = User.withUsername(s).password(new BCryptPasswordEncoder().encode("123456"))
.authorities("bxsheng").build();
return userDetails;
}
}JwtTokenUtils jwt包装类
该类直接使用 slyh 的 [SpringBoot+JWT实现登录权限控制(代码))](( https://www.yisu.com/article/257119.htm)的文章里面的类。
package cn.kdream.securityjwt.utlis;
import io.jsonwebtoken.*;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
/**
* @author Bxsheng
* @blogAddress www.kdream.cn
* @createTIme 2020/9/16
* since JDK 1.8
*/
public class JwtTokenUtils {
public static final String TOKEN_HEADER = "Authorization";
public static final String TOKEN_PREFIX = "Bearer ";
public static final String SECRET = "jwtsecret";
public static final String ISS = "echisan";
private static final Long EXPIRATION = 60 * 60 * 3L; //过期时间3小时
private static final String ROLE = "role";
//创建token
public static String createToken(String username, String role, boolean isRememberMe){
Map map = new HashMap();
map.put(ROLE, role);
return Jwts.builder()
.signWith(SignatureAlgorithm.HS512, SECRET)
.setClaims(map)
.setIssuer(ISS)
.setSubject(username)
.setIssuedAt(new Date())
.setExpiration(new Date(System.currentTimeMillis() + EXPIRATION * 1000))
.compact();
}
//从token中获取用户名(此处的token是指去掉前缀之后的)
public static String getUserName(String token){
String username;
try {
username = getTokenBody(token).getSubject();
} catch ( Exception e){
username = null;
}
return username;
}
public static String getUserRole(String token){
return (String) getTokenBody(token).get(ROLE);
}
private static Claims getTokenBody(String token){
Claims claims = null;
try{
claims = Jwts.parser().setSigningKey(SECRET).parseClaimsJws(token).getBody();
} catch(ExpiredJwtException e){
e.printStackTrace();
} catch(UnsupportedJwtException e){
e.printStackTrace();
} catch(MalformedJwtException e){
e.printStackTrace();
} catch(SignatureException e){
e.printStackTrace();
} catch(IllegalArgumentException e){
e.printStackTrace();
}
return claims;
}
//是否已过期
public static boolean isExpiration(String token){
try{
return getTokenBody(token).getExpiration().before(new Date());
} catch(Exception e){
System.out.println(e.getMessage());
}
return true;
}
}JwtAuthenticationFilter 自定义验证jwt
该类直接使用 slyh 的 [SpringBoot+JWT实现登录权限控制(代码))](( https://www.yisu.com/article/257119.htm))的文章里面的类。
这个类主要的作用是验证jwt信息 ，主要携带了token请求过来，解析jwt并设置在security的上下文中。保存token中所包含权限信息到上下文是这个做法的其中一个目的。你就可以对用户进行权限认证了
/**
* @author Bxsheng
* @blogAddress www.kdream.cn
* @createTIme 2020/9/16
* since JDK 1.8
*/
public class JwtAuthenticationFilter extends BasicAuthenticationFilter {
public JwtAuthenticationFilter(AuthenticationManager authenticationManager) {
super(authenticationManager);
}
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws IOException, ServletException {
String tokenHeader = request.getHeader(JwtTokenUtils.TOKEN_HEADER);
//如果请求头中没有Authorization信息则直接放行了
if(tokenHeader == null || !tokenHeader.startsWith(JwtTokenUtils.TOKEN_PREFIX)){
chain.doFilter(request, response);
return;
}
//如果请求头中有token,则进行解析，并且设置认证信息
if(!JwtTokenUtils.isExpiration(tokenHeader.replace(JwtTokenUtils.TOKEN_PREFIX,""))){
//设置上下文
UsernamePasswordAuthenticationToken authentication = getAuthentication(tokenHeader);
SecurityContextHolder.getContext().setAuthentication(authentication);
}
super.doFilterInternal(request, response, chain);
}
//获取用户信息
private UsernamePasswordAuthenticationToken getAuthentication(String tokenHeader){
String token = tokenHeader.replace(JwtTokenUtils.TOKEN_PREFIX, "");
String username = JwtTokenUtils.getUserName(token);
// 获得权限 添加到权限上去
String role = JwtTokenUtils.getUserRole(token);
List roles = new ArrayList();
roles.add(new GrantedAuthority() {
@Override
public String getAuthority() {
return role;
}
});
if(username != null){
return new UsernamePasswordAuthenticationToken(username, null,roles);
}
return null;
}
} security的配置信息
@EnableGlobalMethodSecurity(prePostEnabled = true) 开启prePostEnabled注解方式授权
@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityJwtConfig extends WebSecurityConfigurerAdapter {
@Autowired
private jwtAccessDeniedHandler jwtAccessDeniedHandler;
@Autowired
private JwtAuthenticationEntryPoint jwtAuthenticationEntryPoint;
@Override
protected void configure(HttpSecurity http) throws Exception {
http.cors().and().csrf().disable().authorizeRequests()
.antMatchers(HttpMethod.OPTIONS,"/**")
.permitAll()
.antMatchers("/").permitAll()
//login 不拦截
.antMatchers("/login").permitAll()
.anyRequest().authenticated()
//授权
.and()
// 禁用session
.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
// 使用自己定义的拦截机制，拦截jwt
http.addFilterBefore(new JwtAuthenticationFilter(authenticationManager()), UsernamePasswordAuthenticationFilter.class)
//授权错误信息处理
.exceptionHandling()
//用户访问资源没有携带正确的token
.authenticationEntryPoint(jwtAuthenticationEntryPoint)
//用户访问没有授权资源
.accessDeniedHandler(jwtAccessDeniedHandler);
}
@Bean
public PasswordEncoder passwordEncoder(){
//使用的密码比较方式
return new BCryptPasswordEncoder();
}
}启动类
我在启动类中配置了三个方法，一个是用来进行登录信息的，另外两个设置了需要权限访问
@SpringBootApplication
@RestController
public class SecurityJwtApplication {
private final AuthenticationManagerBuilder authenticationManagerBuilder;
public SecurityJwtApplication(AuthenticationManagerBuilder authenticationManagerBuilder) {
this.authenticationManagerBuilder = authenticationManagerBuilder;
}
public static void main(String[] args) {
SpringApplication.run(SecurityJwtApplication.class, args);
}
@GetMapping("/")
public String index(){
return "security jwt";
}
@PostMapping("/login")
public String login(@RequestParam String u,@RequestParam String p){
// 登陆验证
UsernamePasswordAuthenticationToken token =
new UsernamePasswordAuthenticationToken(u, p);
Authentication authentication = authenticationManagerBuilder.getObject().authenticate(token);
SecurityContextHolder.getContext().setAuthentication(authentication);
//创建jwt信息
String token1 = JwtTokenUtils.createToken(u,"bxsheng", true);
return token1;
}
@GetMapping("/role")
@PreAuthorize("hasAnyAuthority('bxsheng')")
public String roleInfo(){
return "需要获得bxsheng权限，才可以访问";
}
@GetMapping("/roles")
@PreAuthorize("hasAnyAuthority('kdream')")
public String rolekdream(){
return "需要获得kdream权限，才可以访问";
}
}效果
直接访问需要授权的用户信息
直接没有使用token直接访问只要授权的资源信息，会进入JwtAuthenticationEntryPoint 类
获取token
访问在启动类中的login方法，获取token信息
因为我使用了固定的密码，所以在使用错误的密码访问的时候，可以在springboot的全局异常处理中捕获到异常信息
/**
* @author Bxsheng
* @blogAddress www.kdream.cn
* @createTIme 2020/9/17
* since JDK 1.8
*/
@RestControllerAdvice
public class Error {
@ExceptionHandler(BadCredentialsException.class)
public void badCredentialsException(BadCredentialsException e){
System.out.println(e.getMessage());//用户名或密码错误
// throw new BadCredentialsException(e.getMessage());
}
}
正确的获取token，并进行受保护的资源访问
里面有写死的bxsheng权限信息，所以正常是可以获取bxsheng标识的资源信息的。
成功获取信息
尝试获取无权限资源信息
使用token直接访问无权限资源信息，会进入jwtAccessDeniedHandler 类
