JWT 框架图如下, 来自博客https://blog.csdn.net/shehun1/article/details/45394405 个人觉得还不错..
在开发中Spring boot 启用
加载WebSecurityConfig
@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private UserDetailsService userDetailsService; @Override
public void configure(AuthenticationManagerBuilder auth) throws Exception {
// 使用自定义身份验证组件
auth.authenticationProvider(new JwtAuthenticationProvider(userDetailsService));
}
@Override
protected void configure(HttpSecurity http) throws Exception {
// 禁用 csrf, 由于使用的是JWT，我们这里不需要csrf
http.cors().and().csrf().disable()
.authorizeRequests()
// 跨域预检请求
.antMatchers(HttpMethod.OPTIONS, "/**").permitAll()
// web jars
.antMatchers("/webjars/**").permitAll()
// 查看SQL监控（druid）
.antMatchers("/druid/**").permitAll()
// 首页和登录页面
.antMatchers("/").permitAll()
.antMatchers("/login").permitAll()
// swagger
.antMatchers("/swagger-ui.html").permitAll()
.antMatchers("/swagger-resources").permitAll()
.antMatchers("/v2/api-docs").permitAll()
.antMatchers("/webjars/springfox-swagger-ui/**").permitAll()
// 验证码
.antMatchers("/captcha.jpg**").permitAll()
// 服务监控
.antMatchers("/actuator/**").permitAll()
// 其他所有请求需要身份认证
.anyRequest().authenticated();
// 退出登录处理器
http.logout().logoutSuccessHandler(new HttpStatusReturningLogoutSuccessHandler());
// token验证过滤器
http.addFilterBefore(new JwtAuthenticationFilter(authenticationManager()), UsernamePasswordAuthenticationFilter.class);
} @Bean
@Override
public AuthenticationManager authenticationManager() throws Exception {
return super.authenticationManager();
} }
第二配置Security实现
1: 继承 DaoAuthenticationProvider 类
public class JwtAuthenticationProvider extends DaoAuthenticationProvider {
public JwtAuthenticationProvider(UserDetailsService userDetailsService) {
setUserDetailsService(userDetailsService);
}
@Override
protected void additionalAuthenticationChecks(UserDetails userDetails, UsernamePasswordAuthenticationToken authentication)
throws AuthenticationException {
if (authentication.getCredentials() == null) {
logger.debug("Authentication failed: no credentials provided");
throw new BadCredentialsException(messages.getMessage("AbstractUserDetailsAuthenticationProvider.badCredentials", "Bad credentials"));
}
String presentedPassword = authentication.getCredentials().toString();
String salt = ((JwtUserDetails) userDetails).getSalt();
// 覆写密码验证逻辑
if (!new PasswordEncoder(salt).matches(userDetails.getPassword(), presentedPassword)) {
logger.debug("Authentication failed: password does not match stored value");
throw new BadCredentialsException(messages.getMessage("AbstractUserDetailsAuthenticationProvider.badCredentials", "Bad credentials"));
}
}
}
2：实现 UserDetails 接口
public class JwtUserDetails implements UserDetails {
private static final long serialVersionUID = 1L;
private String username;
private String password;
private String salt;
private Collection<? extends GrantedAuthority> authorities;
JwtUserDetails(String username, String password, String salt, Collection<? extends GrantedAuthority> authorities) {
this.username = username;
this.password = password;
this.salt = salt;
this.authorities = authorities;
}
@Override
public String getUsername() {
return username;
}
@JsonIgnore
@Override
public String getPassword() {
return password;
}
public String getSalt() {
return salt;
}
@Override
public Collection<? extends GrantedAuthority> getAuthorities() {
return authorities;
}
@JsonIgnore
@Override
public boolean isAccountNonExpired() {
return true;
}
@JsonIgnore
@Override
public boolean isAccountNonLocked() {
return true;
}
@JsonIgnore
@Override
public boolean isCredentialsNonExpired() {
return true;
}
@JsonIgnore
@Override
public boolean isEnabled() {
return true;
}
}
3: 实现 UserDetailsService 接口
@Service
public class UserDetailsServiceImpl implements UserDetailsService { @Autowired
private SysUserService sysUserService; @Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
SysUser user = sysUserService.findByName(username);
if (user == null) {
throw new UsernameNotFoundException("该用户不存在");
}
// 用户权限列表，根据用户拥有的权限标识与如 @PreAuthorize("hasAuthority('sys:menu:view')") 标注的接口对比，决定是否可以调用接口
Set<String> permissions = sysUserService.findPermissions(user.getName());
List<GrantedAuthority> grantedAuthorities = permissions.stream().map(GrantedAuthorityImpl::new).collect(Collectors.toList());
return new JwtUserDetails(user.getName(), user.getPassword(), user.getSalt(), grantedAuthorities);
}
}
4: 认证对象 继承 GrantedAuthority
public class GrantedAuthorityImpl implements GrantedAuthority {
private static final long serialVersionUID = 1L;
private String authority;
public GrantedAuthorityImpl(String authority) {
this.authority = authority;
}
public void setAuthority(String authority) {
this.authority = authority;
}
@Override
public String getAuthority() {
return this.authority;
}
}
5：JWT 的认证令牌对象 用于登录时创建一个
package com.louis.kitty.admin.security; import java.util.Collection; import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.GrantedAuthority; /**
* 自定义令牌对象
* @author Louis
* @date Nov 21, 2018
*/
public class JwtAuthenticatioToken extends UsernamePasswordAuthenticationToken { private static final long serialVersionUID = 1L; private String token; public JwtAuthenticatioToken(Object principal, Object credentials){
super(principal, credentials);
} public JwtAuthenticatioToken(Object principal, Object credentials, String token){
super(principal, credentials);
this.token = token;
} public JwtAuthenticatioToken(Object principal, Object credentials, Collection<? extends GrantedAuthority> authorities, String token) {
super(principal, credentials, authorities);
this.token = token;
} public String getToken() {
return token;
} public void setToken(String token) {
this.token = token;
} public static long getSerialversionuid() {
return serialVersionUID;
} }
6：配置Security工具类
package com.louis.kitty.admin.util; import javax.servlet.http.HttpServletRequest; import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource; import com.louis.kitty.admin.security.JwtAuthenticatioToken; /**
* Security相关操作
* @author Louis
* @date Nov 20, 2018
*/
public class SecurityUtils { /**
* 系统登录认证
* @param request
* @param username
* @param password
* @param authenticationManager
* @return
*/
public static JwtAuthenticatioToken login(HttpServletRequest request, String username, String password, AuthenticationManager authenticationManager) {
JwtAuthenticatioToken token = new JwtAuthenticatioToken(username, password);
token.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
// 执行登录认证过程
Authentication authentication = authenticationManager.authenticate(token);
// 认证成功存储认证信息到上下文
SecurityContextHolder.getContext().setAuthentication(authentication);
// 生成令牌并返回给客户端
token.setToken(JwtTokenUtils.generateToken(authentication));
return token;
} /**
* 获取令牌进行认证
* @param request
*/
public static void checkAuthentication(HttpServletRequest request) {
// 获取令牌并根据令牌获取登录认证信息
Authentication authentication = JwtTokenUtils.getAuthenticationeFromToken(request);
// 设置登录认证信息到上下文
SecurityContextHolder.getContext().setAuthentication(authentication);
} /**
* 获取当前用户名
* @return
*/
public static String getUsername() {
String username = null;
Authentication authentication = getAuthentication();
if(authentication != null) {
Object principal = authentication.getPrincipal();
if(principal != null && principal instanceof UserDetails) {
username = ((UserDetails) principal).getUsername();
}
}
return username;
} /**
* 获取用户名
* @return
*/
public static String getUsername(Authentication authentication) {
String username = null;
if(authentication != null) {
Object principal = authentication.getPrincipal();
if(principal != null && principal instanceof UserDetails) {
username = ((UserDetails) principal).getUsername();
}
}
return username;
} /**
* 获取当前登录信息
* @return
*/
public static Authentication getAuthentication() {
if(SecurityContextHolder.getContext() == null) {
return null;
}
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
return authentication;
} }
7： 登录处理
@Autowired
private AuthenticationManager authenticationManager;
// 系统登录认证
JwtAuthenticatioToken token = SecurityUtils.login(request, username, password, authenticationManager);
8: 生成Token工具类
package com.louis.kitty.admin.util;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map; import javax.servlet.http.HttpServletRequest; import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority; import com.louis.kitty.admin.security.GrantedAuthorityImpl;
import com.louis.kitty.admin.security.JwtAuthenticatioToken; import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm; /**
* JWT工具类
* @author Louis
* @date Nov 20, 2018
*/
public class JwtTokenUtils implements Serializable { private static final long serialVersionUID = 1L; /**
* 用户名称
*/
private static final String USERNAME = Claims.SUBJECT;
/**
* 创建时间
*/
private static final String CREATED = "created";
/**
* 权限列表
*/
private static final String AUTHORITIES = "authorities";
/**
* 密钥
*/
private static final String SECRET = "abcdefgh";
/**
* 有效期12小时
*/
private static final long EXPIRE_TIME = 12 * 60 * 60 * 1000; /**
* 生成令牌
*
* @param userDetails 用户
* @return 令牌
*/
public static String generateToken(Authentication authentication) {
Map<String, Object> claims = new HashMap<>(3);
claims.put(USERNAME, SecurityUtils.getUsername(authentication));
claims.put(CREATED, new Date());
claims.put(AUTHORITIES, authentication.getAuthorities());
return generateToken(claims);
} /**
* 从数据声明生成令牌
*
* @param claims 数据声明
* @return 令牌
*/
private static String generateToken(Map<String, Object> claims) {
Date expirationDate = new Date(System.currentTimeMillis() + EXPIRE_TIME);
return Jwts.builder().setClaims(claims).setExpiration(expirationDate).signWith(SignatureAlgorithm.HS512, SECRET).compact();
} /**
* 从令牌中获取用户名
*
* @param token 令牌
* @return 用户名
*/
public static String getUsernameFromToken(String token) {
String username;
try {
Claims claims = getClaimsFromToken(token);
username = claims.getSubject();
} catch (Exception e) {
username = null;
}
return username;
} /**
* 根据请求令牌获取登录认证信息
* @param token 令牌
* @return 用户名
*/
public static Authentication getAuthenticationeFromToken(HttpServletRequest request) {
Authentication authentication = null;
// 获取请求携带的令牌
String token = JwtTokenUtils.getToken(request);
if(token != null) {
// 请求令牌不能为空
if(SecurityUtils.getAuthentication() == null) {
// 上下文中Authentication为空
Claims claims = getClaimsFromToken(token);
if(claims == null) {
return null;
}
String username = claims.getSubject();
if(username == null) {
return null;
}
if(isTokenExpired(token)) {
return null;
}
Object authors = claims.get(AUTHORITIES);
List<GrantedAuthority> authorities = new ArrayList<GrantedAuthority>();
if (authors != null && authors instanceof List) {
for (Object object : (List) authors) {
authorities.add(new GrantedAuthorityImpl((String) ((Map) object).get("authority")));
}
}
authentication = new JwtAuthenticatioToken(username, null, authorities, token);
} else {
if(validateToken(token, SecurityUtils.getUsername())) {
// 如果上下文中Authentication非空，且请求令牌合法，直接返回当前登录认证信息
authentication = SecurityUtils.getAuthentication();
}
}
}
return authentication;
} /**
* 从令牌中获取数据声明
*
* @param token 令牌
* @return 数据声明
*/
private static Claims getClaimsFromToken(String token) {
Claims claims;
try {
claims = Jwts.parser().setSigningKey(SECRET).parseClaimsJws(token).getBody();
} catch (Exception e) {
claims = null;
}
return claims;
} /**
* 验证令牌
* @param token
* @param username
* @return
*/
public static Boolean validateToken(String token, String username) {
String userName = getUsernameFromToken(token);
return (userName.equals(username) && !isTokenExpired(token));
} /**
* 刷新令牌
* @param token
* @return
*/
public static String refreshToken(String token) {
String refreshedToken;
try {
Claims claims = getClaimsFromToken(token);
claims.put(CREATED, new Date());
refreshedToken = generateToken(claims);
} catch (Exception e) {
refreshedToken = null;
}
return refreshedToken;
} /**
* 判断令牌是否过期
*
* @param token 令牌
* @return 是否过期
*/
public static Boolean isTokenExpired(String token) {
try {
Claims claims = getClaimsFromToken(token);
Date expiration = claims.getExpiration();
return expiration.before(new Date());
} catch (Exception e) {
return false;
}
} /**
* 获取请求token
* @param request
* @return
*/
public static String getToken(HttpServletRequest request) {
String token = request.getHeader("Authorization");
String tokenHead = "Bearer ";
if(token == null) {
token = request.getHeader("token");
} else if(token.contains(tokenHead)){
token = token.substring(tokenHead.length());
}
if("".equals(token)) {
token = null;
}
return token;
} }
方法调用权限使用