4.SpringSecurity在分布式环境下的使用

参考

来源于黑马程序员： 手把手教你精通新版SpringSecurity

分布式认证概念说明

分布式认证，即我们常说的单点登录，简称SSO，指的是在多应用系统的项目中，用户只需要登录一次，就可以访 问所有互相信任的应用系统。

分布式认证流程图

首先，我们要明确，在分布式项目中，每台服务器都有各自独立的session，而这些session之间是无法直接共享资 源的，所以，session通常不能被作为单点登录的技术方案。最合理的单点登录方案流程如下图所示：

总结一下，单点登录的实现分两大环节：

• **用户认证：**这一环节主要是用户向认证服务器发起认证请求，认证服务器给用户返回一个成功的令牌token， 主要在认证服务器中完成，即图中的A系统，注意A系统只能有一个。
• **身份校验：**这一环节是用户携带token去访问其他服务器时，在其他服务器中要对token的真伪进行检验，主 要在资源服务器中完成，即图中的B系统，这里B系统可以有很多个。

JWT介绍

概念说明

从分布式认证流程中，我们不难发现，这中间起最关键作用的就是token，token的安全与否，直接关系到系统的 健壮性，这里我们选择使用JWT来实现token的生成和校验。 JWT，全称JSON Web Token，官网地址https://jwt.io，是一款出色的分布式身份校验方案。可以生成token，也可以解析检验token。

JWT生成的token由三部分组成

• 头部：主要设置一些规范信息，签名部分的编码格式就在头部中声明。
• 载荷：token中存放有效信息的部分，比如用户名，用户角色，过期时间等，但是不要放密码，会泄露！
• 签名：将头部与载荷分别采用base64编码后，用“.”相连，再加入盐，最后使用头部声明的编码类型进行编 码，就得到了签名。【通过随机盐在进行加密】

JWT生成token的安全性分析

从JWT生成的token组成上来看，要想避免token被伪造，主要就得看签名部分了，而签名部分又有三部分组成，其中头部和载荷的base64编码，几乎是透明的，毫无安全性可言，那么最终守护token安全的重担就落在了加入的盐上面了！

试想：如果生成token所用的盐与解析token时加入的盐是一样的。岂不是类似于中国人民银行把人民币防伪技术 公开了？大家可以用这个盐来解析token，就能用来伪造token。这时，我们就需要对盐采用非对称加密的方式进行加密，以达到生成token与校验token方所用的盐不一致的安全效果！

非对称加密RSA介绍

• **基本原理：**同时生成两把密钥：私钥和公钥，私钥隐秘保存，公钥可以下发给信任客户端
• 私钥加密，持有私钥或公钥才可以解密
• 公钥加密，持有私钥才可解密
• 优点：安全，难以破解
• 缺点：算法比较耗时，为了安全，可以接受
• 历史：三位数学家Rivest、Shamir 和 Adleman 设计了一种算法，可以实现非对称加密。这种算法用他们三 个人的名字缩写：RSA。

【总结】：也就是说，我们加密信息的时候，使用的是公钥，而验证token真伪的时候，使用的是公钥

JWT相关工具类

jar包

<dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt-api</artifactId><version>0.10.7</version>
</dependency><dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt-impl</artifactId><version>0.10.7</version><scope>runtime</scope>
</dependency><dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt-jackson</artifactId><version>0.10.7</version><scope>runtime</scope>
</dependency>

载荷对象

/**
* 为了方便后期获取token中的用户信息，将token中载荷部分单独封装成一个对象
*/
@Data
public class Payload<T> {}

JWT工具类

/*** 生成token以及校验token相关方法*/
public class JwtUtils {private static final String JWT_PAYLOAD_USER_KEY = "user";/*** 私钥加密token** @param userInfo   载荷中的数据* @param privateKey 私钥* @param expire     过期时间，单位分钟* @return JWT*/public static String generateTokenExpireInMinutes(Object userInfo, PrivateKey privateKey, int expire) {return Jwts.builder().claim(JWT_PAYLOAD_USER_KEY, JsonUtils.toString(userInfo)).setId(createJTI()).setExpiration(DateTime.now().plusMinutes(expire).toDate()).signWith(privateKey, SignatureAlgorithm.RS256).compact();}/*** 私钥加密token** @param userInfo   载荷中的数据* @param privateKey 私钥* @param expire     过期时间，单位秒* @return JWT*/public static String generateTokenExpireInSeconds(Object userInfo, PrivateKey privateKey, int expire) {return Jwts.builder().claim(JWT_PAYLOAD_USER_KEY, JsonUtils.toString(userInfo)).setId(createJTI()).setExpiration(DateTime.now().plusSeconds(expire).toDate()).signWith(privateKey, SignatureAlgorithm.RS256).compact();}/*** 公钥解析token** @param token     用户请求中的token* @param publicKey 公钥* @return Jws<Claims>*/private static Jws<Claims> parserToken(String token, PublicKey publicKey) {return Jwts.parser().setSigningKey(publicKey).parseClaimsJws(token);}private static String createJTI() {return new String(Base64.getEncoder().encode(UUID.randomUUID().toString().getBytes()));}/*** 获取token中的用户信息** @param token     用户请求中的令牌* @param publicKey 公钥* @return 用户信息*/public static <T> Payload<T> getInfoFromToken(String token, PublicKey publicKey, Class<T> userType) {Jws<Claims> claimsJws = parserToken(token, publicKey);Claims body = claimsJws.getBody();Payload<T> claims = new Payload<>();claims.setId(body.getId());claims.setUserInfo(JsonUtils.toBean(body.get(JWT_PAYLOAD_USER_KEY).toString(), userType));claims.setExpiration(body.getExpiration());return claims;}/*** 获取token中的载荷信息** @param token     用户请求中的令牌* @param publicKey 公钥* @return 用户信息*/public static <T> Payload<T> getInfoFromToken(String token, PublicKey publicKey) {Jws<Claims> claimsJws = parserToken(token, publicKey);Claims body = claimsJws.getBody();Payload<T> claims = new Payload<>();claims.setId(body.getId());claims.setExpiration(body.getExpiration());return claims;}
}

RSA工具类

非对称加密工具列

public class RsaUtils {private static final int DEFAULT_KEY_SIZE = 2048;/*** 从文件中读取公钥** @param filename 公钥保存路径，相对于classpath* @return 公钥对象* @throws Exception*/public static PublicKey getPublicKey(String filename) throws Exception {byte[] bytes = readFile(filename);return getPublicKey(bytes);}/*** 从文件中读取密钥** @param filename 私钥保存路径，相对于classpath* @return 私钥对象* @throws Exception*/public static PrivateKey getPrivateKey(String filename) throws Exception {byte[] bytes = readFile(filename);return getPrivateKey(bytes);}/*** 获取公钥** @param bytes 公钥的字节形式* @return* @throws Exception*/private static PublicKey getPublicKey(byte[] bytes) throws Exception {bytes = Base64.getDecoder().decode(bytes);X509EncodedKeySpec spec = new X509EncodedKeySpec(bytes);KeyFactory factory = KeyFactory.getInstance("RSA");return factory.generatePublic(spec);}/*** 获取密钥** @param bytes 私钥的字节形式* @return* @throws Exception*/private static PrivateKey getPrivateKey(byte[] bytes) throws NoSuchAlgorithmException, InvalidKeySpecException {bytes = Base64.getDecoder().decode(bytes);PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(bytes);KeyFactory factory = KeyFactory.getInstance("RSA");return factory.generatePrivate(spec);}/*** 根据密文，生存rsa公钥和私钥,并写入指定文件** @param publicKeyFilename  公钥文件路径* @param privateKeyFilename 私钥文件路径* @param secret             生成密钥的密文*/public static void generateKey(String publicKeyFilename, String privateKeyFilename, String secret, int keySize) throws Exception {KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");SecureRandom secureRandom = new SecureRandom(secret.getBytes());keyPairGenerator.initialize(Math.max(keySize, DEFAULT_KEY_SIZE), secureRandom);KeyPair keyPair = keyPairGenerator.genKeyPair();// 获取公钥并写出byte[] publicKeyBytes = keyPair.getPublic().getEncoded();publicKeyBytes = Base64.getEncoder().encode(publicKeyBytes);writeFile(publicKeyFilename, publicKeyBytes);// 获取私钥并写出byte[] privateKeyBytes = keyPair.getPrivate().getEncoded();privateKeyBytes = Base64.getEncoder().encode(privateKeyBytes);writeFile(privateKeyFilename, privateKeyBytes);}private static byte[] readFile(String fileName) throws Exception {return Files.readAllBytes(new File(fileName).toPath());}private static void writeFile(String destPath, byte[] bytes) throws IOException {File dest = new File(destPath);if (!dest.exists()) {dest.createNewFile();}Files.write(dest.toPath(), bytes);}
}

SpringSecurity+JWT+RSA分布式认证思路分析

SpringSecurity主要是通过过滤器来实现功能的！我们要找到SpringSecurity实现认证和校验身份的过滤器！ 回顾集中式认证流程

用户认证

使用UsernamePasswordAuthenticationFilter过滤器中attemptAuthentication方法实现认证功能，该过滤 器父类中successfulAuthentication方法实现认证成功后的操作。

身份校验

使用BasicAuthenticationFilter过滤器中doFilterInternal方法验证是否登录，以决定能否进入后续过滤器。 分析分布式认证流程

用户认证

由于，分布式项目，多数是前后端分离的架构设计，我们要满足可以接受异步post的认证请求参数，需要修 改UsernamePasswordAuthenticationFilter过滤器中attemptAuthentication方法，让其能够接收请求体。

另外，默认successfulAuthentication方法在认证通过后，是把用户信息直接放入session就完事了，现在我 们需要修改这个方法，在认证通过后生成token并返回给用户。

身份校验

原来BasicAuthenticationFilter过滤器中doFilterInternal方法校验用户是否登录，就是看session中是否有用 户信息，我们要修改为，验证用户携带的token是否合法，并解析出用户信息，交给SpringSecurity，以便于 后续的授权功能可以正常使用。

SpringSecurity+JWT+RSA分布式认证实现

创建父工程并导入jar包

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.itheima</groupId><artifactId>springboot_security_jwt_rsa_parent</artifactId><packaging>pom</packaging><version>1.0-SNAPSHOT</version><modules><module>heima_common</module><module>heima_auth_server</module><module>heima_source_product</module></modules><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.1.3.RELEASE</version><relativePath/></parent>
</project>

通用模块

创建通用子模块并导入JWT相关jar包

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><parent><artifactId>springboot_security_jwt_rsa_parent</artifactId><groupId>com.itheima</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>heima_common</artifactId><dependencies><dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt-api</artifactId><version>0.10.7</version></dependency><dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt-impl</artifactId><version>0.10.7</version><scope>runtime</scope></dependency><dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt-jackson</artifactId><version>0.10.7</version><scope>runtime</scope></dependency><!--jackson包--><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>2.9.9</version></dependency><!--日志包--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-logging</artifactId></dependency><dependency><groupId>joda-time</groupId><artifactId>joda-time</artifactId></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId></dependency></dependencies>
</project>

导入工具类

工具类如下

Payload.java

/*** 为了方便后期获取token中的用户信息，将token中载荷部分单独封装成一个对象*/
@Data
public class Payload<T> {private String id;private T userInfo;private Date expiration;
}

JsonUtil.java

public class JsonUtils {public static final ObjectMapper mapper = new ObjectMapper();private static final Logger logger = LoggerFactory.getLogger(JsonUtils.class);public static String toString(Object obj) {if (obj == null) {return null;}if (obj.getClass() == String.class) {return (String) obj;}try {return mapper.writeValueAsString(obj);} catch (JsonProcessingException e) {logger.error("json序列化出错：" + obj, e);return null;}}public static <T> T toBean(String json, Class<T> tClass) {try {return mapper.readValue(json, tClass);} catch (IOException e) {logger.error("json解析出错：" + json, e);return null;}}public static <E> List<E> toList(String json, Class<E> eClass) {try {return mapper.readValue(json, mapper.getTypeFactory().constructCollectionType(List.class, eClass));} catch (IOException e) {logger.error("json解析出错：" + json, e);return null;}}public static <K, V> Map<K, V> toMap(String json, Class<K> kClass, Class<V> vClass) {try {return mapper.readValue(json, mapper.getTypeFactory().constructMapType(Map.class, kClass, vClass));} catch (IOException e) {logger.error("json解析出错：" + json, e);return null;}}public static <T> T nativeRead(String json, TypeReference<T> type) {try {return mapper.readValue(json, type);} catch (IOException e) {logger.error("json解析出错：" + json, e);return null;}}
}

jwtUitls.java

public class JwtUtils {private static final String JWT_PAYLOAD_USER_KEY = "user";/*** 私钥加密token** @param userInfo   载荷中的数据* @param privateKey 私钥* @param expire     过期时间，单位分钟* @return JWT*/public static String generateTokenExpireInMinutes(Object userInfo, PrivateKey privateKey, int expire) {return Jwts.builder().claim(JWT_PAYLOAD_USER_KEY, JsonUtils.toString(userInfo)).setId(createJTI()).setExpiration(DateTime.now().plusMinutes(expire).toDate()).signWith(privateKey, SignatureAlgorithm.RS256).compact();}/*** 私钥加密token** @param userInfo   载荷中的数据* @param privateKey 私钥* @param expire     过期时间，单位秒* @return JWT*/public static String generateTokenExpireInSeconds(Object userInfo, PrivateKey privateKey, int expire) {return Jwts.builder().claim(JWT_PAYLOAD_USER_KEY, JsonUtils.toString(userInfo)).setId(createJTI()).setExpiration(DateTime.now().plusSeconds(expire).toDate()).signWith(privateKey, SignatureAlgorithm.RS256).compact();}/*** 公钥解析token** @param token     用户请求中的token* @param publicKey 公钥* @return Jws<Claims>*/private static Jws<Claims> parserToken(String token, PublicKey publicKey) {return Jwts.parser().setSigningKey(publicKey).parseClaimsJws(token);}private static String createJTI() {return new String(Base64.getEncoder().encode(UUID.randomUUID().toString().getBytes()));}/*** 获取token中的用户信息** @param token     用户请求中的令牌* @param publicKey 公钥* @return 用户信息*/public static <T> Payload<T> getInfoFromToken(String token, PublicKey publicKey, Class<T> userType) {Jws<Claims> claimsJws = parserToken(token, publicKey);Claims body = claimsJws.getBody();Payload<T> claims = new Payload<>();claims.setId(body.getId());claims.setUserInfo(JsonUtils.toBean(body.get(JWT_PAYLOAD_USER_KEY).toString(), userType));claims.setExpiration(body.getExpiration());return claims;}/*** 获取token中的载荷信息** @param token     用户请求中的令牌* @param publicKey 公钥* @return 用户信息*/public static <T> Payload<T> getInfoFromToken(String token, PublicKey publicKey) {Jws<Claims> claimsJws = parserToken(token, publicKey);Claims body = claimsJws.getBody();Payload<T> claims = new Payload<>();claims.setId(body.getId());claims.setExpiration(body.getExpiration());return claims;}
}

RsaUtils.java

public class RsaUtils {private static final int DEFAULT_KEY_SIZE = 2048;/*** 从文件中读取公钥** @param filename 公钥保存路径，相对于classpath* @return 公钥对象* @throws Exception*/public static PublicKey getPublicKey(String filename) throws Exception {byte[] bytes = readFile(filename);return getPublicKey(bytes);}/*** 从文件中读取密钥** @param filename 私钥保存路径，相对于classpath* @return 私钥对象* @throws Exception*/public static PrivateKey getPrivateKey(String filename) throws Exception {byte[] bytes = readFile(filename);return getPrivateKey(bytes);}/*** 获取公钥** @param bytes 公钥的字节形式* @return* @throws Exception*/private static PublicKey getPublicKey(byte[] bytes) throws Exception {bytes = Base64.getDecoder().decode(bytes);X509EncodedKeySpec spec = new X509EncodedKeySpec(bytes);KeyFactory factory = KeyFactory.getInstance("RSA");return factory.generatePublic(spec);}/*** 获取密钥** @param bytes 私钥的字节形式* @return* @throws Exception*/private static PrivateKey getPrivateKey(byte[] bytes) throws NoSuchAlgorithmException, InvalidKeySpecException {bytes = Base64.getDecoder().decode(bytes);PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(bytes);KeyFactory factory = KeyFactory.getInstance("RSA");return factory.generatePrivate(spec);}/*** 根据密文，生存rsa公钥和私钥,并写入指定文件** @param publicKeyFilename  公钥文件路径* @param privateKeyFilename 私钥文件路径* @param secret             生成密钥的密文*/public static void generateKey(String publicKeyFilename, String privateKeyFilename, String secret, int keySize) throws Exception {KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");SecureRandom secureRandom = new SecureRandom(secret.getBytes());keyPairGenerator.initialize(Math.max(keySize, DEFAULT_KEY_SIZE), secureRandom);KeyPair keyPair = keyPairGenerator.genKeyPair();// 获取公钥并写出byte[] publicKeyBytes = keyPair.getPublic().getEncoded();publicKeyBytes = Base64.getEncoder().encode(publicKeyBytes);writeFile(publicKeyFilename, publicKeyBytes);// 获取私钥并写出byte[] privateKeyBytes = keyPair.getPrivate().getEncoded();privateKeyBytes = Base64.getEncoder().encode(privateKeyBytes);writeFile(privateKeyFilename, privateKeyBytes);}private static byte[] readFile(String fileName) throws Exception {return Files.readAllBytes(new File(fileName).toPath());}private static void writeFile(String destPath, byte[] bytes) throws IOException {File dest = new File(destPath);if (!dest.exists()) {dest.createNewFile();}Files.write(dest.toPath(), bytes);}
}

在通用子模块中编写测试类生成rsa公钥和私钥

public class RsaUtilsTest {private String publicFile = "D:\\auth_key\\rsa_key.pub";private String privateFile = "D:\\auth_key\\rsa_key";@Testpublic void generateKey() throws Exception {RsaUtils.generateKey(publicFile, privateFile, "heima", 2048);}
}

执行后查看D:\auth_key目录发现私钥和公钥文件生成成功

认证服务

创建认证服务工程并导入jar包

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><parent><artifactId>springboot_security_jwt_rsa_parent</artifactId><groupId>com.itheima</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>heima_auth_server</artifactId><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-security</artifactId></dependency><dependency><groupId>com.itheima</groupId><artifactId>heima_common</artifactId><version>1.0-SNAPSHOT</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.47</version></dependency><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>2.1.0</version></dependency></dependencies>
</project>

创建认证服务配置文件

server:port: 9001
spring:datasource:driver-class-name: com.mysql.jdbc.Driverurl: jdbc:mysql:///security_authorityusername: rootpassword: root
mybatis:type-aliases-package: com.itheima.domainconfiguration:map-underscore-to-camel-case: true
logging:level:com.itheima: debug
rsa:key:pubKeyFile: D:\auth_key\id_key_rsa.pubpriKeyFile: D:\auth_key\id_key_rsa

提供解析公钥和私钥的配置类

@Data
@ConfigurationProperties(prefix = "heima.key")
public class RsaKeyProperties {private String pubKeyPath;private String priKeyPath;private PublicKey publicKey;private PrivateKey privateKey;@PostConstructpublic void loadKey() throws Exception {publicKey = RsaUtils.getPublicKey(pubKeyPath);privateKey = RsaUtils.getPrivateKey(priKeyPath);}
}

创建认证服务启动类

@SpringBootApplication
@MapperScan("com.itheima.mapper")
@EnableConfigurationProperties(RsaKeyProperties.class)
public class AuthApplication {public static void main(String[] args) {SpringApplication.run(AuthApplication.class, args);}
}

将上面集中式案例中数据库认证相关代码复制到认证服务中

需要复制的代码如果所示：

注意这里要去掉mapper中继承的通用mapper接口，处理器类上换成@RestController，这里前后端绝对分离，不能再跳转页面了，要返回数据。

public class JwtLoginFilter extends UsernamePasswordAuthenticationFilter {private AuthenticationManager authenticationManager;private RsaKeyProperties prop;public JwtLoginFilter(AuthenticationManager authenticationManager, RsaKeyProperties prop) {this.authenticationManager = authenticationManager;this.prop = prop;}public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException {try {SysUser sysUser = new ObjectMapper().readValue(request.getInputStream(), SysUser.class);UsernamePasswordAuthenticationToken authRequest = new UsernamePasswordAuthenticationToken(sysUser.getUsername(), sysUser.getPassword());return authenticationManager.authenticate(authRequest);}catch (Exception e){try {response.setContentType("application/json;charset=utf-8");response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);PrintWriter out = response.getWriter();Map resultMap = new HashMap();resultMap.put("code", HttpServletResponse.SC_UNAUTHORIZED);resultMap.put("msg", "用户名或密码错误！");out.write(new ObjectMapper().writeValueAsString(resultMap));out.flush();out.close();}catch (Exception outEx){outEx.printStackTrace();}throw new RuntimeException(e);}}public void successfulAuthentication(HttpServletRequest request, HttpServletResponse response, FilterChain chain, Authentication authResult) throws IOException, ServletException {SysUser user = new SysUser();user.setUsername(authResult.getName());user.setRoles((List<SysRole>) authResult.getAuthorities());String token = JwtUtils.generateTokenExpireInMinutes(user, prop.getPrivateKey(), 24 * 60);response.addHeader("Authorization", "Bearer "+token);try {response.setContentType("application/json;charset=utf-8");response.setStatus(HttpServletResponse.SC_OK);PrintWriter out = response.getWriter();Map resultMap = new HashMap();resultMap.put("code", HttpServletResponse.SC_OK);resultMap.put("msg", "认证通过！");out.write(new ObjectMapper().writeValueAsString(resultMap));out.flush();out.close();}catch (Exception outEx){outEx.printStackTrace();}}
}

编写检验token过滤器

public class JwtVerifyFilter extends BasicAuthenticationFilter {private RsaKeyProperties prop;public JwtVerifyFilter(AuthenticationManager authenticationManager, RsaKeyProperties prop) {super(authenticationManager);this.prop = prop;}public void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws IOException, ServletException {String header = request.getHeader("Authorization");if (header == null || !header.startsWith("Bearer ")) {//如果携带错误的token，则给用户提示请登录！chain.doFilter(request, response);response.setContentType("application/json;charset=utf-8");response.setStatus(HttpServletResponse.SC_FORBIDDEN);PrintWriter out = response.getWriter();Map resultMap = new HashMap();resultMap.put("code", HttpServletResponse.SC_FORBIDDEN);resultMap.put("msg", "请登录！");out.write(new ObjectMapper().writeValueAsString(resultMap));out.flush();out.close();} else {//如果携带了正确格式的token要先得到tokenString token = header.replace("Bearer ", "");//验证tken是否正确Payload<SysUser> payload = JwtUtils.getInfoFromToken(token, prop.getPublicKey(), SysUser.class);SysUser user = payload.getUserInfo();if(user!=null){UsernamePasswordAuthenticationToken authResult = new UsernamePasswordAuthenticationToken(user.getUsername(), null, user.getAuthorities());SecurityContextHolder.getContext().setAuthentication(authResult);chain.doFilter(request, response);}}}
}

编写SpringSecurity配置类

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(securedEnabled=true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {@Autowiredprivate UserService userService;@Autowiredprivate RsaKeyProperties prop;@Beanpublic BCryptPasswordEncoder passwordEncoder(){return new BCryptPasswordEncoder();}//指定认证对象的来源public void configure(AuthenticationManagerBuilder auth) throws Exception {auth.userDetailsService(userService).passwordEncoder(passwordEncoder());}//SpringSecurity配置信息public void configure(HttpSecurity http) throws Exception {http.csrf().disable().authorizeRequests().antMatchers("/product").hasAnyRole("USER").anyRequest().authenticated().and().addFilter(new JwtLoginFilter(super.authenticationManager(), prop)).addFilter(new JwtVerifyFilter(super.authenticationManager(), prop)).sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);}
}

启动测试认证服务

认证请求

认证通过结果

token在Headers中：

验证认证请求

资源服务

说明

资源服务可以有很多个，这里只拿产品服务为例，记住，资源服务中只能通过公钥验证认证。不能签发token！

创建产品服务并导入jar包

根据实际业务导包即可，咱们就暂时和认证服务一样了。

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><parent><artifactId>springboot_security_jwt_rsa_parent</artifactId><groupId>com.itheima</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>heima_source_product</artifactId><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-security</artifactId></dependency><dependency><groupId>com.itheima</groupId><artifactId>heima_common</artifactId><version>1.0-SNAPSHOT</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.47</version></dependency><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>2.1.0</version></dependency></dependencies>
</project>

编写产品服务配置文件

切记这里只能有公钥地址！

server:port: 9002
spring:datasource:driver-class-name: com.mysql.jdbc.Driverurl: jdbc:mysql:///security_authorityusername: rootpassword: root
mybatis:type-aliases-package: com.itheima.domainconfiguration:map-underscore-to-camel-case: true
logging:level:com.itheima: debug
rsa:key:pubKeyFile: D:\auth_key\id_key_rsa.pub

编写读取公钥的配置类

@ConfigurationProperties("rsa.key")
public class RsaKeyProperties {private String pubKeyFile;private PublicKey publicKey;@PostConstructpublic void createRsaKey() throws Exception {publicKey = RsaUtils.getPublicKey(pubKeyFile);}public String getPubKeyFile() {return pubKeyFile;}public void setPubKeyFile(String pubKeyFile) {this.pubKeyFile = pubKeyFile;}public PublicKey getPublicKey() {return publicKey;}public void setPublicKey(PublicKey publicKey) {this.publicKey = publicKey;}
}

编写启动类

@SpringBootApplication
@MapperScan("com.itheima.mapper")
@EnableConfigurationProperties(RsaKeyProperties.class)
public class AuthSourceApplication {public static void main(String[] args) {SpringApplication.run(AuthSourceApplication.class, args);}
}

复制认证服务中，用户对象，角色对象和校验认证的接口

这时目录结构如图：

复制认证服务中SpringSecurity配置类做修改，去掉“增加自定义认证过滤器”即可！

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(securedEnabled=true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {@Autowiredprivate RsaKeyProperties prop;//SpringSecurity配置信息public void configure(HttpSecurity http) throws Exception {http.csrf().disable().authorizeRequests().antMatchers("/product").hasAnyRole("USER").anyRequest().authenticated().and().addFilter(new JwtVerifyFilter(super.authenticationManager(), prop)).sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);}
}

编写产品处理器

@RestController
@RequestMapping("/product")
public class ProductController {@GetMappingpublic String findAll(){return "产品测试成功！";}
}

启动产品服务做测试

携带token

在产品处理器上添加访问需要ADMIN角色

@RestController
@RequestMapping("/product")
public class ProductController {@Secured("ROLE_ADMIN")@GetMappingpublic String findAll(){return "产品测试成功！";}
}

重启测试权限不足

在数据库中手动给用户添加ADMIN角色

重新认证获取新token再测试OK了！