1.Shiro用来认证用户及权限控制，jwt用来生成一个token令牌，暂存用户信息。令牌存储在客户端，用户每次请求将其放在header中，在每个服务器节点进行验证。
2.导入依赖库：
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-web</artifactId>
<version>1.5.3</version>
</dependency>
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-spring</artifactId>
<version>1.5.3</version>
</dependency>
<dependency>
<groupId>com.auth0</groupId>
<artifactId>java-jwt</artifactId>
<version>3.10.3</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.11</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpcore</artifactId>
<version>4.4.13</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>3.定义密钥和过期时间
这个过程一般在springboot配置文件中进行编辑，然后再注入到Javabean中，维护起来方便。
emos:
jwt:
#密钥
secret: abc123456
#令牌过期时间（天）
expire: 5
#令牌缓存时间（天数）
cache-expire: 104.创建JWT工具类
可以创建一个shiro包，然后再创建类，该类主要方法包括创建token,获得token用户id,验证token
package com.example.emos.wx.config.shiro;
import cn.hutool.core.date.DateField;
import cn.hutool.core.date.DateUtil;
import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTCreator;
import com.auth0.jwt.JWTVerifier;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.DecodedJWT;
import com.example.emos.wx.exception.EmosException;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import java.util.Date;
@Component
@Slf4j
public class JwtUtil {
//密钥
@Value("${emos.jwt.secret}")
private String secret;
//过期时间（天）
@Value("${emos.jwt.expire}")
private int expire;
public String createToken(int userId) {
Date date = DateUtil.offset(new Date(), DateField.DAY_OF_YEAR, expire).toJdkDate();
Algorithm algorithm = Algorithm.HMAC256(secret); //创建加密算法对象
JWTCreator.Builder builder = JWT.create();
String token = builder.withClaim("userId", userId).withExpiresAt(date).sign(algorithm);
return token;
}
public int getUserId(String token) {
try {
DecodedJWT jwt = JWT.decode(token);
return jwt.getClaim("userId").asInt();
} catch (Exception e) {
throw new EmosException("令牌无效");
}
}
public void verifierToken(String token) {
Algorithm algorithm = Algorithm.HMAC256(secret); //创建加密算法对象
JWTVerifier verifier = JWT.require(algorithm).build();
verifier.verify(token);
}
}5.把令牌封装成认证对象
因为Shiro框架认证需要用到认证对象，把令牌字符串做简单的封装。客户端提交的token不能直接交给Shiro框架，需要向封装成AuthenticationToken类型的对象。
package com.example.emos.wx.config.shiro;
import org.apache.shiro.authc.AuthenticationToken;
public class OAuth2Token implements AuthenticationToken {
private String token;
public OAuth2Token(String token){
this.token = token;
}
@Override
public Object getPrincipal() {
return token;
}
@Override
public Object getCredentials() {
return token;
}
}6.创建OAuth2Realm类，实现AuthorizingRealm接口
package com.example.emos.wx.config.shiro;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import java.util.Set;
@Component
public class OAuth2Realm extends AuthorizingRealm {
@Autowired
private JwtUtil jwtUtil;
@Override
public boolean supports(AuthenticationToken token) {
return token instanceof OAuth2Token;
}
/**
* 授权(验证权限时调用)
*/
@Override
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
//TODO 查询用户的权限列表
//TODO 把权限列表添加到info对象中
return info;
}
/**
* 认证(登录时调用)
*/
@Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
//TODO 从令牌中获取userId，然后检测该账户是否被冻结。
SimpleAuthenticationInfo info = new SimpleAuthenticationInfo();
//TODO 往info对象中添加用户信息、Token字符串
return info;
}
}7.刷新令牌如何设计？
一个是采用短令牌和长令牌的双令牌机制；一个是采用redis缓存令牌机制。更常用第二种;
8.创建ThreadLocalToken类
package com.example.emos.wx.config.shiro;
import org.springframework.stereotype.Component;
@Component
public class ThreadLocalToken {
private ThreadLocal local=new ThreadLocal();
public void setToken(String token){
local.set(token);
}
public String getToken(){
return (String) local.get();
}
public void clear(){
local.remove();
}
}9.创建OAuth2Filter类
emos:
jwt:
#密钥
secret: abc123456
#令牌过期时间（天）
expire: 5
#令牌缓存时间（天数）
cache-expire: 10package com.example.emos.wx.config.shiro;
import com.auth0.jwt.exceptions.JWTDecodeException;
import com.auth0.jwt.exceptions.TokenExpiredException;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpStatus;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.web.filter.authc.AuthenticatingFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Scope;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.RequestMethod;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
@Component
@Scope("prototype")
public class OAuth2Filter extends AuthenticatingFilter {
@Autowired
private ThreadLocalToken threadLocalToken;
@Value("${emos.jwt.cache-expire}")
private int cacheExpire;
@Autowired
private JwtUtil jwtUtil;
@Autowired
private RedisTemplate redisTemplate;
/**
* 拦截请求之后，用于把令牌字符串封装成令牌对象
*/
@Override
protected AuthenticationToken createToken(ServletRequest request,
ServletResponse response) throws Exception {
//获取请求token
String token = getRequestToken((HttpServletRequest) request);
if (StringUtils.isBlank(token)) {
return null;
}
return new OAuth2Token(token);
}
/**
* 拦截请求，判断请求是否需要被Shiro处理
*/
@Override
protected boolean isAccessAllowed(ServletRequest request,
ServletResponse response, Object mappedValue) {
HttpServletRequest req = (HttpServletRequest) request;
// Ajax提交application/json数据的时候，会先发出Options请求
// 这里要放行Options请求，不需要Shiro处理
if (req.getMethod().equals(RequestMethod.OPTIONS.name())) {
return true;
}
// 除了Options请求之外，所有请求都要被Shiro处理
return false;
}
/**
* 该方法用于处理所有应该被Shiro处理的请求
*/
@Override
protected boolean onAccessDenied(ServletRequest request,
ServletResponse response) throws Exception {
HttpServletRequest req = (HttpServletRequest) request;
HttpServletResponse resp = (HttpServletResponse) response;
resp.setHeader("Content-Type", "text/html;charset=UTF-8");
//允许跨域请求
resp.setHeader("Access-Control-Allow-Credentials", "true");
resp.setHeader("Access-Control-Allow-Origin", req.getHeader("Origin"));
threadLocalToken.clear();
//获取请求token，如果token不存在，直接返回401
String token = getRequestToken((HttpServletRequest) request);
if (StringUtils.isBlank(token)) {
resp.setStatus(HttpStatus.SC_UNAUTHORIZED);
resp.getWriter().print("无效的令牌");
return false;
}
try {
jwtUtil.verifierToken(token); //检查令牌是否过期
} catch (TokenExpiredException e) {
//客户端令牌过期，查询Redis中是否存在令牌，如果存在令牌就重新生成一个令牌给客户端
if (redisTemplate.hasKey(token)) {
redisTemplate.delete(token);//删除令牌
int userId = jwtUtil.getUserId(token);
token = jwtUtil.createToken(userId); //生成新的令牌
//把新的令牌保存到Redis中
redisTemplate.opsForValue().set(token, userId + "", cacheExpire, TimeUnit.DAYS);
//把新令牌绑定到线程
threadLocalToken.setToken(token);
} else {
//如果Redis不存在令牌，让用户重新登录
resp.setStatus(HttpStatus.SC_UNAUTHORIZED);
resp.getWriter().print("令牌已经过期");
return false;
}
} catch (JWTDecodeException e) {
resp.setStatus(HttpStatus.SC_UNAUTHORIZED);
resp.getWriter().print("无效的令牌");
return false;
}
boolean bool = executeLogin(request, response);
return bool;
}
@Override
protected boolean onLoginFailure(AuthenticationToken token,
AuthenticationException e, ServletRequest request, ServletResponse response) {
HttpServletRequest req = (HttpServletRequest) request;
HttpServletResponse resp = (HttpServletResponse) response;
resp.setStatus(HttpStatus.SC_UNAUTHORIZED);
resp.setContentType("application/json;charset=utf-8");
resp.setHeader("Access-Control-Allow-Credentials", "true");
resp.setHeader("Access-Control-Allow-Origin", req.getHeader("Origin"));
try {
resp.getWriter().print(e.getMessage());
} catch (IOException exception) {
}
return false;
}
/**
* 获取请求头里面的token
*/
private String getRequestToken(HttpServletRequest httpRequest) {
//从header中获取token
String token = httpRequest.getHeader("token");
//如果header中不存在token，则从参数中获取token
if (StringUtils.isBlank(token)) {
token = httpRequest.getParameter("token");
}
return token;
}
@Override
public void doFilterInternal(ServletRequest request,
ServletResponse response, FilterChain chain) throws ServletException, IOException {
super.doFilterInternal(request, response, chain);
}
}10.创建ShiroConfig类
package com.example.emos.wx.config.shiro;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.spring.LifecycleBeanPostProcessor;
import org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.servlet.Filter;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
@Configuration
public class ShiroConfig {
@Bean("securityManager")
public SecurityManager securityManager(OAuth2Realm oAuth2Realm) {
DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
securityManager.setRealm(oAuth2Realm);
securityManager.setRememberMeManager(null);
return securityManager;
}
@Bean("shiroFilter")
public ShiroFilterFactoryBean shiroFilter(SecurityManager securityManager,OAuth2Filter oAuth2Filter) {
ShiroFilterFactoryBean shiroFilter = new ShiroFilterFactoryBean();
shiroFilter.setSecurityManager(securityManager);
//oauth过滤
Map<String, Filter> filters = new HashMap<>();
filters.put("oauth2", oAuth2Filter);
shiroFilter.setFilters(filters);
Map<String, String> filterMap = new LinkedHashMap<>();
filterMap.put("/webjars/**", "anon");
filterMap.put("/druid/**", "anon");
filterMap.put("/app/**", "anon");
filterMap.put("/sys/login", "anon");
filterMap.put("/swagger/**", "anon");
filterMap.put("/v2/api-docs", "anon");
filterMap.put("/swagger-ui.html", "anon");
filterMap.put("/swagger-resources/**", "anon");
filterMap.put("/captcha.jpg", "anon");
filterMap.put("/user/register", "anon");
filterMap.put("/user/login", "anon");
filterMap.put("/test/**", "anon");
filterMap.put("/**", "oauth2");
shiroFilter.setFilterChainDefinitionMap(filterMap);
return shiroFilter;
}
@Bean("lifecycleBeanPostProcessor")
public LifecycleBeanPostProcessor lifecycleBeanPostProcessor() {
return new LifecycleBeanPostProcessor();
}
@Bean
public AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor(SecurityManager securityManager) {
AuthorizationAttributeSourceAdvisor advisor = new AuthorizationAttributeSourceAdvisor();
advisor.setSecurityManager(securityManager);
return advisor;
}
}11.利用aop，把更新的令牌返回给客户端
package com.example.emos.wx.aop;
import com.example.emos.wx.common.util.R;
import com.example.emos.wx.config.shiro.ThreadLocalToken;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
@Aspect
@Component
public class TokenAspect {
@Autowired
private ThreadLocalToken threadLocalToken;
@Pointcut("execution(public * com.example.emos.wx.controller.*.*(..)))")
public void aspect() {
}
@Around("aspect()")
public Object around(ProceedingJoinPoint point) throws Throwable {
R r = (R) point.proceed(); //方法执行结果
String token = threadLocalToken.getToken();
//如果ThreadLocal中存在Token，说明是更新的Token
if (token != null) {
r.put("token", token); //往响应中放置Token
threadLocalToken.clear();
}
return r;
}
}12.返回给客户端的异常精简化，进行测试
package com.example.emos.wx.config;
import com.example.emos.wx.exception.EmosException;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestControllerAdvice;
@Slf4j
@RestControllerAdvice
public class ExceptionAdvice {
@ResponseBody
@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
@ExceptionHandler(Exception.class)
public String validExceptionHandler(Exception e) {
log.error("执行异常",e);
if (e instanceof MethodArgumentNotValidException) {
MethodArgumentNotValidException exception = (MethodArgumentNotValidException) e;
//将错误信息返回给前台
return exception.getBindingResult().getFieldError().getDefaultMessage();
}
else if(e instanceof EmosException){
EmosException exception=(EmosException)e;
return exception.getMsg();
}
else if(e instanceof UnauthorizedException){
return "你不具有相关权限";
}
else {
return "后端执行异常";
}
}
}本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
