快速上手spring-boot+spring-security+jwt
数据库表设计
三张表:
用户表 user
角色表 role
用户角色表 user_roles
图示:
图1.png
实体类
用户类
@Entity
public class User implements UserDetails {
@Id
@GeneratedValue
private Long id;
private String username;
private String password;
// 角色
@ManyToMany(cascade = {CascadeType.REFRESH},fetch = FetchType.EAGER)
private List<Role> roles;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public void setUsername(String username) {
this.username = username;
}
public void setPassword(String password) {
this.password = password;
}
public List<Role> getRoles() {
return roles;
}
public void setRoles(List<Role> roles) {
this.roles = roles;
}
@Override
public boolean isAccountNonExpired() {
return true;
}
@Override
public boolean isAccountNonLocked() {
return true;
}
@Override
public boolean isCredentialsNonExpired() {
return true;
}
@Override
public boolean isEnabled() {
return true;
}
@Override
public Collection<? extends GrantedAuthority> getAuthorities() {
List<GrantedAuthority> authorities = new ArrayList<>();
for (Role role : roles) {
authorities.add( new SimpleGrantedAuthority( role.getName() ) );
}
return authorities;
}
@Override
public String getUsername() {
return username;
}
@Override
public String getPassword() {
return password;
}
}
通过继承 UserDetails，即可实现 Security 中相关的安全功能。
角色类
@Entity
public class Role {
@Id
@GeneratedValue
private Long id;
private String name;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
安全配置
@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled=true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private UserService userService;
@Bean
public JwtTokenFilter authenticationTokenFilterBean() throws Exception {
return new JwtTokenFilter();
}
@Bean
public AuthenticationManager authenticationManagerBean() throws Exception {
return super.authenticationManagerBean();
}
@Override
protected void configure( AuthenticationManagerBuilder auth ) throws Exception {
auth.userDetailsService( userService ).passwordEncoder( new BCryptPasswordEncoder() );
}
@Override
protected void configure( HttpSecurity httpSecurity ) throws Exception {
httpSecurity.csrf().disable()
.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
.authorizeRequests()
.antMatchers(HttpMethod.OPTIONS, "/**").permitAll()
.antMatchers(HttpMethod.POST, "/authentication/**").permitAll()// 不过滤
.antMatchers(HttpMethod.POST).authenticated()
.antMatchers(HttpMethod.PUT).authenticated()
.antMatchers(HttpMethod.DELETE).authenticated()
.antMatchers(HttpMethod.GET).authenticated();
httpSecurity
.addFilterBefore(authenticationTokenFilterBean(), UsernamePasswordAuthenticationFilter.class);
httpSecurity.headers().cacheControl();
}
}
针对token的操作
@Component
public class JwtTokenUtil implements Serializable {
private static final long serialVersionUID = -5625635588908941275L;
private static final String CLAIM_KEY_USERNAME = "sub";
private static final String CLAIM_KEY_CREATED = "created";
public String getUsernameFromToken(String token) {
String username;
try {
final Claims claims = getClaimsFromToken(token);
username = claims.getSubject();
} catch (Exception e) {
username = null;
}
return username;
}
public Date getCreatedDateFromToken(String token) {
Date created;
try {
final Claims claims = getClaimsFromToken(token);
created = new Date((Long) claims.get(CLAIM_KEY_CREATED));
} catch (Exception e) {
created = null;
}
return created;
}
public Date getExpirationDateFromToken(String token) {
Date expiration;
try {
final Claims claims = getClaimsFromToken(token);
expiration = claims.getExpiration();
} catch (Exception e) {
expiration = null;
}
return expiration;
}
private Claims getClaimsFromToken(String token) {
Claims claims;
try {
claims = Jwts.parser()
.setSigningKey( Const.SECRET )
.parseClaimsJws(token)
.getBody();
} catch (Exception e) {
claims = null;
}
return claims;
}
private Date generateExpirationDate() {
return new Date(System.currentTimeMillis() + Const.EXPIRATION_TIME * 1000);
}
private Boolean isTokenExpired(String token) {
final Date expiration = getExpirationDateFromToken(token);
return expiration.before(new Date());
}
private Boolean isCreatedBeforeLastPasswordReset(Date created, Date lastPasswordReset) {
return (lastPasswordReset != null && created.before(lastPasswordReset));
}
// 生成token
public String generateToken(UserDetails userDetails) {
Map<String, Object> claims = new HashMap<>();
claims.put(CLAIM_KEY_USERNAME, userDetails.getUsername());
claims.put(CLAIM_KEY_CREATED, new Date());
return generateToken(claims);
}
// 生成token
String generateToken(Map<String, Object> claims) {
return Jwts.builder()
.setClaims(claims)
.setExpiration(generateExpirationDate())
.signWith(SignatureAlgorithm.HS512, Const.SECRET )
.compact();
}
public Boolean canTokenBeRefreshed(String token) {
return !isTokenExpired(token);
}
// 更新token
public String refreshToken(String token) {
String refreshedToken;
try {
final Claims claims = getClaimsFromToken(token);
claims.put(CLAIM_KEY_CREATED, new Date());
refreshedToken = generateToken(claims);
} catch (Exception e) {
refreshedToken = null;
}
return refreshedToken;
}
// 验证token
public Boolean validateToken(String token, UserDetails userDetails) {
User user = (User) userDetails;
final String username = getUsernameFromToken(token);
return (
username.equals(user.getUsername())
&& !isTokenExpired(token)
);
}
}
过滤器
@Component
public class JwtTokenFilter extends OncePerRequestFilter {
@Autowired
private UserDetailsService userDetailsService;
// 注入 jwt工具类
@Autowired
private JwtTokenUtil jwtTokenUtil;
@Override
protected void doFilterInternal ( HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws ServletException, IOException {
// request请求头中是否有 Authorization 认证请求
String authHeader = request.getHeader( Const.HEADER_STRING );
if (authHeader != null && authHeader.startsWith( Const.TOKEN_PREFIX )) {
// 存在 进行 截取 把string类型的 token取出来
final String authToken = authHeader.substring( Const.TOKEN_PREFIX.length() );
// 通过token 把 对应的用户名 取出来
String username = jwtTokenUtil.getUsernameFromToken(authToken);
if (username != null && SecurityContextHolder.getContext().getAuthentication() == null) {
UserDetails userDetails = this.userDetailsService.loadUserByUsername(username);
if (jwtTokenUtil.validateToken(authToken, userDetails)) {
UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(
userDetails, null, userDetails.getAuthorities());
authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(
request));
SecurityContextHolder.getContext().setAuthentication(authentication);
}
}
}
chain.doFilter(request, response);
}
}
流程：
图2.png
