shiro整合jwt

文章目录

基于token的身份验证
个人理解
jwt工具类
shiro部分修改

登录的修改:
realm的修改:
自定义filter:
配置:

测试
总结

基于token的身份验证

JSON Web Token（JWT）是一个非常轻巧的规范。这个规范允许我们使用JWT在用户和服务器之间传递安全可靠的信息。

   <!--JWT-->
        <dependency>
            <groupId>com.auth0</groupId>
            <artifactId>java-jwt</artifactId>
            <version>3.4.0</version>
        </dependency>

个人理解

首先,登录的话,不能在通过shiro自己的方法去验证了,因为我们自定义的token需要存储用户使用的token,所以登录的密码验证就不能通过shiro进行验证,而需要我们自己去验证密码的准确性,在登录方法里面可以,在realm认证方法里面也可以.
然后,基于token进行权限验证的话,我们请求所有需要认证的接口时候请求头里必须携带token,然后后端进行token认证,判断token是否合法是否过期等等…
token的刷新,可以自定义返回code,返回新的token,来进行token刷新工作.
token缓存在redis中,可以实现集群token的共享.可以使token的过期删除交给redis
我为了简单实现,刷新token和缓存redis就不实现了,只跟shiro整合部分写上去.

jwt工具类

部分信息:
标准中注册的声明（建议但不强制使用）
iss: jwt签发者
sub: jwt所面向的用户 //这个以后就是放我们登录的用户名
aud: 接收jwt的一方
exp: jwt的过期时间，这个过期时间必须要大于签发时间 //过期时间也可以放
nbf: 定义在什么时间之前，该jwt都是不可用的.
iat: jwt的签发时间
jti: jwt的唯一身份标识，主要用来作为一次性token,从而回避重放攻击

withClaim可以自定义部分参数,因为能够被破解,建议放无关隐私数据

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTVerifier;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.exceptions.JWTDecodeException;
import com.auth0.jwt.interfaces.DecodedJWT;

import java.util.Date;
import java.util.UUID;

public class JwtUtil {

    private static final long EXPIRE_TIME = 60 * 60 * 1000;

    /**
     * 校验token是否正确
     *
     * @param token  密钥
     * @param secret 用户的密码
     * @return 是否正确
     */
    public static boolean verify(String token, String username, String secret) {
        try {
            //根据密码生成JWT效验器
            Algorithm algorithm = Algorithm.HMAC256(secret);
            JWTVerifier verifier = JWT.require(algorithm)
                    .withClaim("username", username)
                    .build();
            //效验TOKEN
            DecodedJWT jwt = verifier.verify(token);
            return true;
        } catch (Exception exception) {
            return false;
        }
    }

    /**
     * 获得token中的信息无需secret解密也能获得
     *
     * @return token中包含的用户名
     */
    public static String getUsername(String token) {
        try {
            DecodedJWT jwt = JWT.decode(token);
            return jwt.getClaim("username").asString();
        } catch (JWTDecodeException e) {
            return null;
        }
    }

    /**
     * 获得token中的信息无需secret解密也能获得
     *
     * @return token中包含的用户名
     */
    public static Integer getUserId(String token) {
        try {
            DecodedJWT jwt = JWT.decode(token);
            return jwt.getClaim("userId").asInt();
        } catch (JWTDecodeException e) {
            return null;
        }
    }

    /**
     * 获得tokenId
     *
     * @return uuid
     */
    public static String getTokenId(String token) {
        try {
            DecodedJWT jwt = JWT.decode(token);
            return jwt.getId();
        } catch (JWTDecodeException e) {
            return null;
        }
    }

    /**
     * 获取token过期时间
     *
     * @return 过期时间
     */
    public static Date getExpiresAt(String token) {
        try {
            DecodedJWT jwt = JWT.decode(token);
            return jwt.getExpiresAt();
        } catch (JWTDecodeException e) {
            return null;
        }
    }

    /**
     * 获取token签发时间
     *
     * @return 签发时间
     */
    public static Date getIssuedAt(String token) {
        try {
            DecodedJWT jwt = JWT.decode(token);
            return jwt.getIssuedAt();
        } catch (JWTDecodeException e) {
            return null;
        }
    }


    /**
     * 生成签名
     *
     * @param username 用户名
     * @param secret   用户的密码
     * @return 加密的token
     */
    public static String sign(String username, String secret) {
        Date date = new Date(System.currentTimeMillis() + EXPIRE_TIME);
        Algorithm algorithm = Algorithm.HMAC256(secret);
        String jwtId = UUID.randomUUID().toString();
        // 附带username信息
        return JWT.create()
                .withJWTId(jwtId)
                .withClaim("username", username)
                .withExpiresAt(date)
                .withIssuedAt(new Date())
                .sign(algorithm);
    }

    public static void main(String[] args) {
        String token = sign("aaa", "123456");
        System.out.println("token" + token);
        System.out.println(getTokenId(token));
        System.out.println(getUserId(token));
        System.out.println(getUsername(token));
        System.out.println(getIssuedAt(token));
        System.out.println(getExpiresAt(token));
        System.out.println(verify(token, "aaa", "123456"));
    }

}

自定义shiro的token:

 
import org.apache.shiro.authc.AuthenticationToken;
 

public class JwtToken implements AuthenticationToken {
 
    private String token;
 
    public JwtToken(String token) {
        this.token = token;
    }
 
    @Override
    public Object getPrincipal() {
        return token;
    }
 
    @Override
    public Object getCredentials() {
        return token;
    }
}

shiro部分修改

登录的修改:

在这里插入图片描述

realm的修改:

在这里插入图片描述
重写supports方法,token必须是JwtToken,源码:

import com.txn.dto.User;
import com.txn.util.JwtToken;
import com.txn.util.JwtUtil;
import lombok.extern.slf4j.Slf4j;
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;

@Slf4j
public class JwtShiroRealm extends AuthorizingRealm {

    @Override
    public boolean supports(AuthenticationToken token) {
        return token instanceof JwtToken;
    }

    /**
     * 认证
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        log.info("-doGetAuthenticationInfo登录认证-");

        String tokenStr = (String) token.getCredentials();
        // 解密获得username，用于和数据库进行对比
        String username = JwtUtil.getUsername(tokenStr);
        log.info("登录的用户:" + username);


        if ("admin".equals(username)) {

            //数据库查出来的用户
            User user = new User();
            user.setId(1);
            user.setUserName("admin");
            user.setPassword("admin");
//            ByteSource bytes = ByteSource.Util.bytes("1");
            //验证密码是否正确
            if (JwtUtil.verify(tokenStr, username, user.getPassword())) {
                log.info("登录成功");
            } else {
                throw new UnknownAccountException("用户名密码错误");
            }
            SimpleAuthenticationInfo simpleAuthenticationInfo = new SimpleAuthenticationInfo(token.getCredentials(), token.getCredentials(), this.getName());
            return simpleAuthenticationInfo;
        }
        return null;
    }

    /**
     * 授权
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        log.info("执行doGetAuthorizationInfo方法进行授权");
        String username = JwtUtil.getUsername(principalCollection.toString());

        log.info("登录的用户:" + username);
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        info.addRole("role_admin");
        info.addStringPermission("user:add");
        info.addStringPermission("user:list");
        return info;
    }


}

这时候登录的时候返回token部分修改完成了,现在还需要自定义filter,部分需要校验的方法都需要走自定义filter,filter的作用就是将前端请求头里的token取出进行登录,登录成功将token缓存到redis里面,然后进行认证的时候直接通过redis进行认证即可.可以将username作为key,token作为value,当然key必须是唯一的.

自定义filter:


import com.txn.exception.MyprojectException;
import com.txn.util.JwtToken;
import org.apache.shiro.web.filter.authc.BasicHttpAuthenticationFilter;
import org.springframework.http.HttpStatus;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMethod;

import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


public class JwtFilter extends BasicHttpAuthenticationFilter {


    /**
     * 执行登录认证
     *
     * @param request
     * @param response
     * @param mappedValue
     * @return
     */
    @Override
    protected boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) {
        String token = ((HttpServletRequest) request).getHeader("Authorization");
        if (StringUtils.isEmpty(token)) {
            throw new MyprojectException("token不能为空");
        }
//            executeLogin(request, response);
        return true;
    }

    /**
     *
     */
    @Override
    protected boolean executeLogin(ServletRequest request, ServletResponse response) throws Exception {
        HttpServletRequest httpServletRequest = (HttpServletRequest) request;
        String token = httpServletRequest.getHeader("Authorization");
        if (StringUtils.isEmpty(token)) {
            throw new MyprojectException("token不能为空");
        }
        JwtToken jwtToken = new JwtToken(token);
        // 提交给realm进行登入，如果错误他会抛出异常并被捕获
        getSubject(request, response).login(jwtToken);
        // 如果没有抛出异常则代表登入成功，返回true
        return true;
    }


    @Override
    protected boolean onAccessDenied(ServletRequest request, ServletResponse response) throws Exception {
        System.out.println("登录失败");
        return super.onAccessDenied(request, response);
    }

    /**
     * 对跨域提供支持
     */
    @Override
    protected boolean preHandle(ServletRequest request, ServletResponse response) throws Exception {
        HttpServletRequest httpServletRequest = (HttpServletRequest) request;
        HttpServletResponse httpServletResponse = (HttpServletResponse) response;
        httpServletResponse.setHeader("Access-control-Allow-Origin", httpServletRequest.getHeader("Origin"));
        httpServletResponse.setHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS,PUT,DELETE");
        httpServletResponse.setHeader("Access-Control-Allow-Headers", httpServletRequest.getHeader("Access-Control-Request-Headers"));
        // 跨域时会首先发送一个option请求，这里我们给option请求直接返回正常状态
        if (httpServletRequest.getMethod().equals(RequestMethod.OPTIONS.name())) {
            httpServletResponse.setStatus(HttpStatus.OK.value());
            return false;
        }
        return super.preHandle(request, response);
    }

}

配置:

在这里插入图片描述

源码:

package com.txn.config.jwt;

import com.txn.config.ShiroRealm;
import com.txn.config.ShiroSessionListener;
import net.sf.ehcache.CacheManager;
import org.apache.shiro.authc.credential.HashedCredentialsMatcher;
import org.apache.shiro.cache.MemoryConstrainedCacheManager;
import org.apache.shiro.mgt.DefaultSessionStorageEvaluator;
import org.apache.shiro.mgt.DefaultSubjectDAO;
import org.apache.shiro.realm.Realm;
import org.apache.shiro.session.SessionListener;
import org.apache.shiro.session.mgt.SessionManager;
import org.apache.shiro.session.mgt.eis.SessionDAO;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.apache.shiro.web.servlet.SimpleCookie;
import org.apache.shiro.web.session.mgt.DefaultWebSessionManager;
import org.crazycake.shiro.RedisCacheManager;
import org.crazycake.shiro.RedisManager;
import org.crazycake.shiro.RedisSessionDAO;
import org.springframework.cache.ehcache.EhCacheManagerFactoryBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;

import javax.servlet.Filter;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;

/**
 * @author <a href="mailto:15268179013@139.com">yida</a>
 * @Version 2020-01-01 15:05
 * @Version 1.0
 * @Description ShiroConfig
 */
@Configuration
public class JwtShiroConfig {

    @Bean
    public DefaultWebSecurityManager securityManager() {
        DefaultWebSecurityManager webSecurityManager = new DefaultWebSecurityManager();

        //session管理
//        webSecurityManager.setSessionManager(sessionManager());

        //realm管理
        webSecurityManager.setRealm(realm());

        //缓存管理
        webSecurityManager.setCacheManager(new MemoryConstrainedCacheManager());
        //使用ehcache
//        EhCacheManager ehCacheManager = new EhCacheManager();
//        ehCacheManager.setCacheManager(getEhCacheManager());
//        webSecurityManager.setCacheManager(ehCacheManager);

        //redis实现
//        webSecurityManager.setCacheManager(redisCacheManager());

        //关闭session
        DefaultSubjectDAO subjectDAO = new DefaultSubjectDAO();
        DefaultSessionStorageEvaluator defaultSessionStorageEvaluator = new DefaultSessionStorageEvaluator();
        defaultSessionStorageEvaluator.setSessionStorageEnabled(false);
        subjectDAO.setSessionStorageEvaluator(defaultSessionStorageEvaluator);
        webSecurityManager.setSubjectDAO(subjectDAO);

        return webSecurityManager;
    }

    @Bean
    public RedisCacheManager redisCacheManager() {

        RedisManager redisManager = new RedisManager();
        redisManager.setHost("localhost:6379");
        redisManager.setDatabase(1);
        redisManager.setTimeout(5000);
//        redisManager.setPassword();

        RedisCacheManager redisCacheManager = new RedisCacheManager();
        redisCacheManager.setRedisManager(redisManager);
        return redisCacheManager;
    }

    @Bean
    public CacheManager getEhCacheManager() {
        EhCacheManagerFactoryBean ehCacheManagerFactoryBean = new EhCacheManagerFactoryBean();
        ehCacheManagerFactoryBean.setConfigLocation(new ClassPathResource("classpath:org/apache/shiro/cache/ehcache/ehcache.xml"));
        return ehCacheManagerFactoryBean.getObject();
    }

    @Bean
    public Realm realm() {
        JwtShiroRealm shiroRealm = new JwtShiroRealm();
        return shiroRealm;
    }

    @Bean
    public ShiroFilterFactoryBean shiroFilter() {
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
        shiroFilterFactoryBean.setSecurityManager(securityManager());
        shiroFilterFactoryBean.setLoginUrl("/login");
        shiroFilterFactoryBean.setSuccessUrl("/index");
        shiroFilterFactoryBean.setFilterChainDefinitions(
                "/login = anon
" +
                        "/logout = logout
" +
                        "/user = jwt,authc,perms[user:list]
" +
                        "/** = jwt
" +
                        "");

        HashMap<String, Filter> myFIleter = new HashMap<>();
        myFIleter.put("jwt", new JwtFilter());

        shiroFilterFactoryBean.setFilters(myFIleter);

        return shiroFilterFactoryBean;
    }

}

测试

登录成功,返回token:
在这里插入图片描述
登录失败:

请求user:
携带token:

不携带返回401:

总结

简单的使用,具体项目中需要具体设计.我这里只是简单的使用,整合.
redis缓存的设计,token的刷新,等等,还需要根据项目进行设计,不过大体就是这样使用.

世界上所有的不公平都是由于当事人能力不足造成的.

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原文地址：https://www.cnblogs.com/javayida/p/13346774.html

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