SpringSecurity 整合SpringBoot結合jwt與rsa實現分布式認證授權

基於springsecurity整合springboot實現簡單認證授權進行修改實現分布式認證，即我們常說的單點登錄，簡稱SSO，指的是在多應用系統的項目中，用戶只需要登錄一次，就可以訪問所有互相信任的應用系統。

1. 單點登錄

總結一下，單點登錄的實現分兩大環節：
用戶認證：這一環節主要是用戶向認證服務器發起認證請求，認證服務器給用戶返回一個成功的令牌 token，
主要在認證服務器中完成，即圖中的A系統，注意A系統只能有一個。
身份校驗：這一環節是用戶攜帶 token去訪問其他服務器時，在其他服務器中要對token的真偽進行檢驗，主
要在資源服務器中完成，即圖中的B系統，這里B系統可以有很多個。

2. jwt和rsa

1. JWT 介紹

從分布式認證流程中，我們不難發現，這中間起最關鍵作用的就是token，token的安全與否，直接關系到系統的健壯性，這里我們選擇使用JWT來實現token的生成和校驗。
JWT，全稱JSON Web Token，官網地址https://jwt.io ，是一款出色的分布式身份校驗方案。可以生成token，也可以解析檢驗token。
JWT生成的token由三部分組成：

• 頭部：主要設置一些規范信息，簽名部分的編碼格式就在頭部中聲明。

• 載荷： token中存放有效信息的部分，比如用戶名，用戶角色，過期時間等，但是不要放密碼，會泄露！

• 簽名：將頭部與載荷分別采用 base64編碼后，用“.”相連，再加入鹽，最后使用頭部聲明的編碼類型進行編碼，就得到了簽名。

JWT生成token的安全性分析
從JWT生成的token組成上來看，要想避免token被偽造，主要就得看簽名部分了，而簽名部分又有三部分組成，其中頭部和載荷的base64編碼，幾乎是透明的，毫無安全性可言，那么最終守護token安全的重擔就落在了加入的鹽上面了！
試想：如果生成token所用的鹽與解析token時加入的鹽是一樣的。豈不是類似於中國人民銀行把人民幣防偽技術公開了？大家可以用這個鹽來解析token，就能用來偽造token。
這時，我們就需要對鹽采用非對稱加密的方式進行加密，以達到生成token與校驗token方所用的鹽不一致的安全效果！

2. 非對稱加密 RSA介紹

• 基本原理：同時生成兩把密鑰：私鑰和公鑰，私鑰隱秘保存，公鑰可以下發給信任客戶端
  • 私鑰加密，持有私鑰或公鑰才可以解密
  • 公鑰加密，持有私鑰才可解密
• 優點：安全，難以破解
• 缺點：算法比較耗時，為了安全，可以接受

3. 創建項目

1. 創建父工程

pom.xml如下

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <packaging>pom</packaging>
    <modules>
        <module>common</module>
        <module>server_auth</module>
        <module>server_resource</module>
    </modules>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>springboot_security_jwt_rsa_parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springboot_security_jwt_rsa_parent</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>



</project>

2. 創建工具模塊

pom.xml如下

<?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.example</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>common</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <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>
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-logging -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-logging</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.10.1</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/joda-time/joda-time -->
        <dependency>
            <groupId>joda-time</groupId>
            <artifactId>joda-time</artifactId>
            <version>2.10.5</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.10</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>

    </dependencies>

</project>

1. JsonUtils

package com.example.utils;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.util.List;
import java.util.Map;

/**
 * @author: 黑馬程序員
 **/
public class JsonUtils {

    public static final ObjectMapper mapper = new ObjectMapper();

    private static final Logger logger = LoggerFactory.getLogger(JsonUtils.class);

    //json化
    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序列化出錯：" + obj, e);
            return null;
        }
    }

    //json解析
    public static <T> T toBean(String json, Class<T> tClass) {
        try {
            return mapper.readValue(json, tClass);
        } catch (IOException e) {
            logger.error("json解析出錯：" + json, e);
            return null;
        }
    }

    //解析list的json數據
    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解析出錯：" + json, e);
            return null;
        }
    }

    //json轉map
    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解析出錯：" + json, e);
            return null;
        }
    }

    //json解析自定義類型
    public static <T> T nativeRead(String json, TypeReference<T> type) {
        try {
            return mapper.readValue(json, type);
        } catch (IOException e) {
            logger.error("json解析出錯：" + json, e);
            return null;
        }
    }
}

2. JwtUtils

package com.example.utils;

import com.example.domain.Payload;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jws;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.joda.time.DateTime;

import java.security.PrivateKey;
import java.security.PublicKey;
import java.util.Base64;
import java.util.UUID;

/**
 * @author: 黑馬程序員
 * 生成token以及校驗token相關方法
 */
public class JwtUtils {

    private static final String JWT_PAYLOAD_USER_KEY = "user";

    /**
     * 私鑰加密token
     *
     * @param userInfo   載荷中的數據
     * @param privateKey 私鑰
     * @param expire     過期時間，單位分鍾
     * @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();
    }

    /**
     * 私鑰加密token
     *
     * @param userInfo   載荷中的數據
     * @param privateKey 私鑰
     * @param expire     過期時間，單位秒
     * @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();
    }

    /**
     * 公鑰解析token
     *
     * @param token     用戶請求中的token
     * @param publicKey 公鑰
     * @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()));
    }

    /**
     * 獲取token中的用戶信息
     *
     * @param token     用戶請求中的令牌
     * @param publicKey 公鑰
     * @return 用戶信息
     */
    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;
    }

    /**
     * 獲取token中的載荷信息
     *
     * @param token     用戶請求中的令牌
     * @param publicKey 公鑰
     * @return 用戶信息
     */
    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;
    }
}

3. RsaUtils

package com.example.utils;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.security.*;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.Base64;

/**
 * @author 黑馬程序員
 */
public class RsaUtils {

    private static final int DEFAULT_KEY_SIZE = 2048;

    /**
     * 從文件中讀取公鑰
     *
     * @param filename 公鑰保存路徑，相對於classpath
     * @return 公鑰對象
     * @throws Exception
     */
    public static PublicKey getPublicKey(String filename) throws Exception {
        byte[] bytes = readFile(filename);
        return getPublicKey(bytes);
    }

    /**
     * 從文件中讀取密鑰
     *
     * @param filename 私鑰保存路徑，相對於classpath
     * @return 私鑰對象
     * @throws Exception
     */
    public static PrivateKey getPrivateKey(String filename) throws Exception {
        byte[] bytes = readFile(filename);
        return getPrivateKey(bytes);
    }

    /**
     * 獲取公鑰
     *
     * @param bytes 公鑰的字節形式
     * @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);
    }

    /**
     * 獲取密鑰
     *
     * @param bytes 私鑰的字節形式
     * @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);
    }

    /**
     * 根據密文，生存rsa公鑰和私鑰,並寫入指定文件
     *
     * @param publicKeyFilename  公鑰文件路徑
     * @param privateKeyFilename 私鑰文件路徑
     * @param secret             生成密鑰的密文
     */
    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();
        // 獲取公鑰並寫出
        byte[] publicKeyBytes = keyPair.getPublic().getEncoded();
        publicKeyBytes = Base64.getEncoder().encode(publicKeyBytes);
        writeFile(publicKeyFilename, publicKeyBytes);
        // 獲取私鑰並寫出
        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);
    }
}

4. pojo類Payload

package com.example.domain;

import lombok.Data;

import java.util.Date;

/**
 * @author john
 * @date 2020/1/12 - 9:15
 */
@Data
public class Payload<T> {
    private String id;
    private T userInfo;
    private Date expiration;
}

5. 測試生成rsa簽名的公鑰和私鑰

package com.example.utils;

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.*;

/**
 * @author john
 * @date 2020/1/12 - 9:35
 */
class RsaUtilsTest {
    private String privateFilePath = "D:\\imooc\\study\\springboot_security_jwt_rsa_parent\\key\\private.key";
    private String publicFilePath = "D:\\imooc\\study\\springboot_security_jwt_rsa_parent\\key\\rsa_public.pub";

    @Test
    void getPublicKey() throws Exception {
        System.out.println(RsaUtils.getPublicKey(publicFilePath));
    }

    @Test
    void getPrivateKey() throws Exception {
        System.out.println(RsaUtils.getPrivateKey(privateFilePath));
    }

    @Test
    void generateKey() throws Exception {
        RsaUtils.generateKey(publicFilePath, privateFilePath, "saltss", 2048);
    }
}

效果如圖所示

3. 創建認證模塊

pom.xml如下

<?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.example</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>server_auth</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <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>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>common</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.48</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.mybatis.spring.boot/mybatis-spring-boot-starter -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.1</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.10</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>
</project>

1. application.yml

server:
  port: 8081
spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    password: root
    username: root
    url: jdbc:mysql:///test
mybatis:
  type-aliases-package: com.example.domain
  configuration:
    map-underscore-to-camel-case: true
logging:
  level:
    com.example: debug
rsa:
  key:
    privateKeyFile: D:\test\auth\id_rsa_private_pkcs
    publicKeyFile: D:\test\auth\id_rsa_public.pub

2. 提供解析公鑰和私鑰的配置類

@ConfigurationProperties(prefix = "rsa.key")
@Data
public class RsaKeyProperties {
    private String publicKeyFile;
    private String privateKeyFile;

    private PublicKey publicKey;
    private PrivateKey privateKey;

    @PostConstruct
    public void createRsaKey() throws Exception {
        publicKey = RsaUtils.getPublicKey(publicKeyFile);
        privateKey = RsaUtils.getPrivateKey(privateKeyFile);
    }
}

3. 創建認證服務啟動類

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

4. 編寫認證過濾器

public class JwtLoginFilter extends UsernamePasswordAuthenticationFilter {
    private AuthenticationManager authenticationManager;
    private RsaKeyProperties prop;

    public JwtLoginFilter(AuthenticationManager authenticationManager, RsaKeyProperties prop) {
        this.authenticationManager = authenticationManager;
        this.prop = prop;
    }

    //重寫springsecurity獲取用戶名和密碼操作
    public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException {
        try {
            //從輸入流中獲取用戶名和密碼，而不是表單
            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 {
                //處理失敗請求
                response.setContentType("application/json;charset=utf-8");
                response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
                PrintWriter out = response.getWriter();
                Map map = new HashMap<>();
                map.put("code", HttpServletResponse.SC_UNAUTHORIZED);
                map.put("msg", "用戶名或者密碼錯誤");
                out.write(new ObjectMapper().writeValueAsString(map));
                out.flush();
                out.close();
            } catch (Exception e1) {
                e1.printStackTrace();
            }

            throw new RuntimeException(e);
        }
    }

    //重寫用戶名密碼授權成功操作----返回token憑證
    protected void successfulAuthentication(HttpServletRequest request, HttpServletResponse response, FilterChain chain, Authentication authResult) throws IOException, ServletException {
        //從authResult獲取認證成功的用戶信息
        SysUser resultUser = new SysUser();
        SysUser authUser = (SysUser) authResult.getPrincipal();
        resultUser.setUsername(authUser.getUsername());
        resultUser.setId(authUser.getId());
        resultUser.setStatus(authUser.getStatus());
        resultUser.setRoles((List<SysRole>) authResult.getAuthorities());
        String token = JwtUtils.generateTokenExpireInMinutes(resultUser, prop.getPrivateKey(), 3600*24);
        //將token寫入header
        response.addHeader("Authorization", "Bearer " + token);
        try {
            //登錄成功時，返回json格式進行提示
            response.setContentType("application/json;charset=utf-8");
            response.setStatus(HttpServletResponse.SC_OK);
            PrintWriter out = response.getWriter();
            Map<String, Object> map = new HashMap<String, Object>();
            map.put("code", HttpServletResponse.SC_OK);
            map.put("message", "登陸成功！");
            out.write(new ObjectMapper().writeValueAsString(map));
            out.flush();
            out.close();
        } catch (Exception e1) {
            e1.printStackTrace();
        }
    }
}

5. 編寫檢驗token過濾器

public class JwtVerifyFilter extends BasicAuthenticationFilter {
    private RsaKeyProperties prop;

    public JwtVerifyFilter(AuthenticationManager authenticationManager, RsaKeyProperties prop) {
        super(authenticationManager);
        this.prop = prop;
    }

    /**
     * 過濾請求
     */
    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response,
                                    FilterChain chain) {
        try {
            //請求體的頭中是否包含Authorization
            String header = request.getHeader("Authorization");
            //Authorization中是否包含Bearer，不包含直接返回
            if (header == null || !header.startsWith("Bearer ")) {
                chain.doFilter(request, response);
                responseJson(response);
                return;
            }
            //獲取權限失敗，會拋出異常
            UsernamePasswordAuthenticationToken authentication = getAuthentication(request);
            //獲取后，將Authentication寫入SecurityContextHolder中供后序使用
            SecurityContextHolder.getContext().setAuthentication(authentication);
            chain.doFilter(request, response);
        } catch (Exception e) {
            responseJson(response);
            e.printStackTrace();
        }
    }

    /**
     * 未登錄提示
     *
     * @param response
     */
    private void responseJson(HttpServletResponse response) {
        try {
            //未登錄提示
            response.setContentType("application/json;charset=utf-8");
            response.setStatus(HttpServletResponse.SC_FORBIDDEN);
            PrintWriter out = response.getWriter();
            Map<String, Object> map = new HashMap<String, Object>();
            map.put("code", HttpServletResponse.SC_FORBIDDEN);
            map.put("message", "請登錄！");
            out.write(new ObjectMapper().writeValueAsString(map));
            out.flush();
            out.close();
        } catch (Exception e1) {
            e1.printStackTrace();
        }
    }

    /**
     * 通過token，獲取用戶信息
     *
     * @param request
     * @return
     */
    private UsernamePasswordAuthenticationToken getAuthentication(HttpServletRequest request) {
        String token = request.getHeader("Authorization");
        if (token != null) {
            //通過token解析出載荷信息
            Payload<SysUser> payload = JwtUtils.getInfoFromToken(token.replace("Bearer ", ""),
                    prop.getPublicKey(), SysUser.class);
            SysUser user = payload.getUserInfo();
            //不為null，返回
            if (user != null) {
                return new UsernamePasswordAuthenticationToken(user, null, user.getRoles());
            }
            return null;
        }
        return null;
    }
}

6. 編寫SpringSecurity配置類

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(securedEnabled = true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    private UserService userService;
    @Autowired
    private BCryptPasswordEncoder bCryptPasswordEncoder;
    @Autowired
    private RsaKeyProperties prop;

    @Bean
    public BCryptPasswordEncoder myPasswordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                //關閉跨站請求防護
                .cors()
                .and()
                .csrf()
                .disable()
                //允許不登陸就可以訪問的方法，多個用逗號分隔
                .authorizeRequests()
                .antMatchers("/product").hasAnyRole("ROLE_USER")
                //其他的需要授權后訪問
                .anyRequest().authenticated()
                .and()
                //增加自定義認證過濾器
                .addFilter(new JwtLoginFilter(authenticationManager(), prop))
                //增加自定義驗證認證過濾器
                .addFilter(new JwtVerifyFilter(authenticationManager(), prop))
                // 前后端分離是無狀態的，不用session了，直接禁用。
                .sessionManagement()
                .sessionCreationPolicy(SessionCreationPolicy.STATELESS);
    }

    @Override
    public void configure(AuthenticationManagerBuilder auth) throws Exception {
        //UserDetailsService類
        auth.userDetailsService(userService)
                //加密策略
                .passwordEncoder(bCryptPasswordEncoder);
    }
}

7. 啟動測試認證服務

認證成功會返回token

4. 資源模塊

資源服務可以有很多個，這里只拿產品服務為例，記住，資源服務中只能通過公鑰驗證認證。不能簽發token！

pom.xml如下

<?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.example</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>server_resource</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <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.example</groupId>
            <artifactId>common</artifactId>
            <version>0.0.1-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>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.10</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>
</project>

1. 配置application.yml

server:
  port: 8082
spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    password: root
    username: root
    url: jdbc:mysql:///test
mybatis:
  type-aliases-package: com.example.domain
  configuration:
    map-underscore-to-camel-case: true
logging:
  level:
    com.example: debug
rsa:
  key:
    publicKeyFile: D:\test\auth\id_rsa_public.pub

2. 編寫讀取公鑰的配置類

@ConfigurationProperties(prefix = "rsa.key")
@Data
public class RsaKeyProperties {
    private String publicKeyFile;

    private PublicKey publicKey;

    @PostConstruct
    public void createRsaKey() throws Exception {
        publicKey = RsaUtils.getPublicKey(publicKeyFile);
    }
}

3. 編寫啟動類

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

4. 編寫檢驗token過濾器

public class JwtVerifyFilter extends BasicAuthenticationFilter {
    private RsaKeyProperties prop;

    public JwtVerifyFilter(AuthenticationManager authenticationManager, RsaKeyProperties prop) {
        super(authenticationManager);
        this.prop = prop;
    }

    /**
     * 過濾請求
     */
    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response,
                                    FilterChain chain) {
        try {
            //請求體的頭中是否包含Authorization
            String header = request.getHeader("Authorization");
            //Authorization中是否包含Bearer，不包含直接返回
            if (header == null || !header.startsWith("Bearer ")) {
                chain.doFilter(request, response);
                responseJson(response);
                return;
            }
            //獲取權限失敗，會拋出異常
            UsernamePasswordAuthenticationToken authentication = getAuthentication(request);
            //獲取后，將Authentication寫入SecurityContextHolder中供后序使用
            SecurityContextHolder.getContext().setAuthentication(authentication);
            chain.doFilter(request, response);
        } catch (Exception e) {
            responseJson(response);
            e.printStackTrace();
        }
    }

    /**
     * 未登錄提示
     *
     * @param response
     */
    private void responseJson(HttpServletResponse response) {
        try {
            //未登錄提示
            response.setContentType("application/json;charset=utf-8");
            response.setStatus(HttpServletResponse.SC_FORBIDDEN);
            PrintWriter out = response.getWriter();
            Map<String, Object> map = new HashMap<String, Object>();
            map.put("code", HttpServletResponse.SC_FORBIDDEN);
            map.put("message", "請登錄！");
            out.write(new ObjectMapper().writeValueAsString(map));
            out.flush();
            out.close();
        } catch (Exception e1) {
            e1.printStackTrace();
        }
    }

    /**
     * 通過token，獲取用戶信息
     *
     * @param request
     * @return
     */
    private UsernamePasswordAuthenticationToken getAuthentication(HttpServletRequest request) {
        String token = request.getHeader("Authorization");
        if (token != null) {
            //通過token解析出載荷信息
            Payload<SysUser> payload = JwtUtils.getInfoFromToken(token.replace("Bearer ", ""),
                    prop.getPublicKey(), SysUser.class);
            SysUser user = payload.getUserInfo();
            //不為null，返回
            if (user != null) {
                return new UsernamePasswordAuthenticationToken(user, null, user.getRoles());
            }
            return null;
        }
        return null;
    }
}

5. 編寫SpringSecurity配置類

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(securedEnabled = true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    private UserService userService;
    @Autowired
    private BCryptPasswordEncoder bCryptPasswordEncoder;
    @Autowired
    private RsaKeyProperties prop;

    @Bean
    public BCryptPasswordEncoder myPasswordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                //關閉跨站請求防護
                .cors()
                .and()
                .csrf()
                .disable()
                //允許不登陸就可以訪問的方法，多個用逗號分隔
                .authorizeRequests()
                .antMatchers("/product").hasAnyRole("ROLE_USER")
                //其他的需要授權后訪問
                .anyRequest().authenticated()
                .and()
                //增加自定義驗證認證過濾器
                .addFilter(new JwtVerifyFilter(authenticationManager(), prop))
                // 前后端分離是無狀態的，不用session了，直接禁用。
                .sessionManagement()
                .sessionCreationPolicy(SessionCreationPolicy.STATELESS);
    }

    @Override
    public void configure(AuthenticationManagerBuilder auth) throws Exception {
        //UserDetailsService類
        auth.userDetailsService(userService)
                //加密策略
                .passwordEncoder(bCryptPasswordEncoder);
    }
}

6. 編寫測試產品控制器

@RestController
@RequestMapping("/product")
public class ProductController {
    @Secured("ROLE_PRODUCT")
    @RequestMapping("/list")
    public String findAll(){
        return "產品測試成功！";
    }
}

7. 啟動產品服務做測試

當不包含ROLE_PRODUCT權限的用戶訪問時會被阻止

當包含ROLE_PRODUCT權限的用戶認證后會被允許訪問

4. 實例代碼

代碼資源

5. 參考資源

企業開發首選的安全框架Spring Security深入淺出

感謝黑馬程序員的課程分享