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springcloud-gateway整合jwt+jcasbin实现权限控制的详细过程

开发者 https://www.devze.com 2023-02-07 10:40 出处:网络 作者: 陈扬天
目录jcasbin简介:jcasbin 的主要特性包括:jcasbin 不做的事情:项目架构:父pom文件:gateway项目:pom文件:gateway相关核心代码:admin-user项目:pom文件:登录控制器(测试):jcasbin的整合:feign项目:最后
目录
  • jcasbin简介:
  • jcasbin 的主要特性包括:
  • jcasbin 不做的事情:
  • 项目架构:
  • 父pom文件:
  • gateway项目:
    • pom文件:
    • gateway相关核心代码:
  • admin-user项目:
    • pom文件:
    • 登录控制器(测试):
    • jcasbin的整合:
  • feign项目:
    • 最后自行设置异常信息:

      jcasbin简介:

      jcasbin 是一个用 Java 语言打造的轻量级开源访问控制框架https://github.com/casbin/jcasbin,是casbin的Java语言版本。目前在 GitHub 开源。jcasbin 采用了元模型的设计思想,支持多种经典的访问控制方案,如基于角色的访问控制 RBAC、基于属性的访问控制 ABAC 等。

      jcasbin 的主要特性包括:

      1.支持自定义请求的格式,默认的请求格式为{subject, object, action};

      2.具有访问控制模型 model 和策略 policy 两个核心概念;

      3.支持 RBAC 中的多层角色继承,不止主体可以有角色,资源也可以具有角色;

      4.支持超级用户,如 root 或 Administrator,超级用户可以不受授权策略的约束访问任意资源;

      5.支持多种内置的操作符,如 keyMatch,方便对路径式的资源进行管理,如 /foo/bar 可以映射到 /foo*

      jcasbin 不做的事情:

      1.身份认证 authentication (即验证用户的用户名、密码),jcasbin 只负责访问控制。应该有其他专门的组件负责身份认证,然后由 jcasbin 进行访问控制,二者是相互配合的关系;

      2.管理用户列表或角色列表。jcasbin 认为由项目自身来管理用户、角色列表更为合适,jcasbin 假设所有策略和请求中出现的用户、角色、资源都是合法有效的。

      项目架构:

      基于springboot+springcloud+nacos的简单分布式项目,项目交互采用openFeign框架,单独提取出来成为一个独立的model:feign

      父pom文件:

         <properties>
              <spring-cloud.version>Hoxton.SR9</spring-cloud.version>
              <druid.version>1.2.4</druid.version>
              <spring-boot.version>2.2.6.RELEASE</spring-boot.version>
              <spring-cloud-alibaba.version>2.2.9.RELEASE</spring-cloud-alibaba.version>
              <sql.version>8.0.29</sql.version>
              <jwt.version>0.9.0</jwt.version>
              <swagger2.version>2.9.2</swagger2.version>
              <jcasbin.version>1.32.1</jcasbin.version>
              <jdbc-adapter.version>2.3.3</jdbc-adapter.version>
          </properties>
          <dependencies>
              <dependency>
                  <groupId>com.distribute</groupId>
                  <artifactId>commonUtil</artifactId>
                  <version>${version}</version>
              </dependency>
              <dependency>
                  <groupId>org.casbin</groupId>
                  <artifactId>jcasbin</artifactId>
                  <version>${jcasbin.version}</version>
              </dependency>
              <dependency>
                  <groupId>org.casbin</groupId>
                  <artifactId>jdbc-adapter</artifactId>
                  <version>${jdbc-adapter.version}</version>
              </dependency>
              <dependency>
                  <groupId>org.springframework.boot</groupId>
                  <artifactId>spring-boot-starter</artifactId>
              </dependency>
              <dependency>
                  <groupId>org.springframework.boot</groupId>
                  <artifactId>spring-boot-configuration-processor</artifactId>
                  <optional>true</optional>
              </dependency>
              <dependency>
                  <groupId>org.projectlombok</groupId>
                  <artifactId>lombok</artifactId>
                  <optional>true</optional>
              </dependency>
          </dependencies>
          <dependencyManagement>
              <dependencies>
                  <dependency>
                      <groupId>com.distribute</groupId>
                      <artifactId>feign</artifactId>
                      <version>${version}</version>
                  </dependency>
                  <!--鉴权-->
                  <dependency>
                      <groupId>io.jsonwebtoken</groupId>
                      <artifactId>jjwt</artifactId>
                      <version>${jwt.version}</version>
                  </dependency>
                  <dependency>
                      <groupId>mysql</groupId>
                      <artifactId>mysql-connector-java</artifactId>
                      <version>${sql.version}</version>
                      <scope>runtime</scope>
                  </dependency>
      
                  <!--druid-->
                  <dependency>
                      <groupId>com.alibaba</groupId>
                      <artifactId>druid-spring-boot-starter</artifactId>
                      <version>${druid.version}</version>
                  </dependency>
                  <dependency>
                      <groupId>org.springframework.cloud</groupId>
                      <artifactId>spring-cloud-dependencies</artifactId>
                      <version>${spring-cloud.version}</version>
                      <type>pom</type>
                      <scope>import</scope>
                  </dependency>
                  <dependency>
                      <groupId>org.springframework.boot</groupId>
                      <artifactId>spring-boot-dependencies</artifactId>
                      <version>${spring-boot.version}</version>
                      <type>pom</type>
                      <scope>import</scope>
                  </dependency>
                  <dependency>
                      <groupId>com.alibaba.cloud</groupId>
                      <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                      <version>${spring-cloud-alibaba.version}</version>
                      <type>pom</type>
                      <scope>import</scope>
                  </dependency>
              </dependencies>
          </dependencyManagement>
      </project>

      gateway项目:

      pom文件:

       <dependencies>
              <dependency>
                  <groupId>com.distribute</groupId>
                  <artifactId>feign</artifactId>
              </dependency>
              <dependency>
                  <groupId>org.springframework.cloud</groupId>
                  <artifactId>spring-cloud-starter-gateway</artifactId>
              </dependency>
              <dependency>
                  <groupId>com.alibaba.cloud</groupId>
                  <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
              </dependency>
              <dependency>
                  <groupId>com.alibaba.cloud</groupId>
                  <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
              </dependency>
          </dependencies>

      gateway相关核心代码:

      注册中心采用nacos,关于nacos的使用可以自行学习,不是本文关键。

      网关采用gateway,核心就是gateway中的过滤器接口:GlobalFilter:

      @Slf4j
      @Component
      @Order(value = Integer.MIN_VALUE)
      public class AuthorityGlobalFilter implements GlobalFilter, Ordered {
      
          @Autowired
          private ConfigProperty configProperty;
          @Autowired
          private AdminUserInterfaceFeign adminUserInterfaceFeign;
      
      
      
          @Override
          public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
              //filter的前置处理
              ServerHttpRequest request = exchange.getRequest();
              String path = request.getPath().pathWithinApplication().value();
              InetSocketAddress remoteAddress = request.getRemoteAddress();
              //3 获得请求头 ,获得token值
              HttpHeaders headers = request.getHeaders();
              //判断白名单和是否有权限
              if (validateWhiteList(path)) {
                  return chain
                          //继续调用filter
                          .filter(exchange)
                          //filter的后置处理
                          .then(Mono.fromRunnable(() -> {
                              ServerHttpResponse response = exchange.getResponse();
                              HttpStatus statusCode = response.getStatusCode();
                              log.info("请求路径:{},远程IP地址:{},响应码:{}", path, remoteAddress, statusCode);
                          }));
              } else if(hASPower(requejsst)){
                  return chain
                          //继续调用filter
                          .filter(exchange)
                          //filter的后置处理
                          .then(Mono.fromRunnable(() -> {
                              ServerHttpResponse response = exchange.getResponse();
                              HttpStatus statusCode = response.getStatusCode();
                              log.info("请求路径:{},远程IP地址:{},响应码:{}", path, remoteAddress, statusCode);
                          }));
              }else {
                  return noPower(exchange);
              }
      
          }
      
          @Override
          public int getOrder() {
              return 0;
          }
      
      
          /**
           * 判断是否有权限
           */
          private boolean hasPower( ServerHttpRequest request) {
              HttpHeaders headers = request.getHeaders();
             List<String> authorizationList =  headers.getOrEmpty("Authorization");
             if(authorizationList.size()==0){
                 return false;
             }else{
                 try {
                     Claims claims = JwtUtil.parseJWT(authorizationList.get(0));
                     //判断token是否过期
                     Date expireTime = claims.getExpiration();
                     Date now = new Date();
                     if (now.after(expireTime))
                     {
                         return false;
                     }
      
                      String userName = claims.getSubject();
      
                     String path = request.getPath().pathWithinApplication().value();
                     String method = request.getMethodValue();
                     Policy checkPower = new Policy(userName,path,method);
                     CommonResult result = adminUserInterfaceFeign.checkPower(checkPower);
                     return result.isSuccess() && (Boolean) result.getData();
                 }catch (Exception e){
                     return false;
                 }
             }
          }
      
          /**
           * 网关拒绝,返回Result
           *
           * @param
           */
          private Mono<Void> noPower(ServerWebExchange serverWebExchange) {
              // 权限不够拦截
              serverWebExchange.getResponse().setStatusCode(HttpStatus.UNAUTHORIZED);
              DataBuffer buffer = serverWebExchange.getResponse().bufferFactory().wrap(JSONUtil.toJsonStr(CommonResult.error(HttpStatusCode.UNAUTHORIZED)).getBytes(StandardCharsets.UTF_8));
              ServerHttpResponse response = serverWebExchange.getResponse();
              response.setStatusCode(HttpStatus.UNAUTHORIZED);
              //指定编码,否则在浏览器中会中文乱码
              response.getHeaders().add("Content-Type", "application/json;charset=UTF-8");
              return response.writeWith(Mono.just(buffer));
      
          }
          public boolean validateWhiteList(String requestPath) {
              for (String whiteList : configProperty.getWhiteList()) {
                  if (requestPath.contains(whiteList) || requestPath.matches(whiteList)) {
                      return true;
                  }
              }
              return false;
          }
      }
      

      网关中首先校验是否属于白名单,白名单可以写在application.yml中,通过实体类加载:

      application.yml:

      distribute:
         config:
           whiteList:
            - admin/login
            - admin/role/checkPowRWAbUOer

      ConfigProperty:

      @Component
      @ConfigurationProperties(prefix = "distribute.config")
      @Data
      public class ConfigProperty {
          List<String> whiteList;
      }

      访问的资源(比如Controller路径)如果不存在于白名单,则通过Feign调用admin-user项目中的鉴权方法进行鉴权,关于admin-user项目以及feign的使用,在之后会提到,GlobalFilter中涉及的jwt工具类,文末会给出。

      admin-user项目:

      pom文件:

       <dependencies>
              <dependency>
                  <groupId>com.distribute</groupId>
                  <artifactId>feign</artifactId>
              </dependency>
      
              <!--数据库驱动-->
              <dependency>
                  <groupId>mysql</groupId>
                  <artifactId>mysql-connector-java</artifactId>
              </dependency>
      
              <!--数据库连接池-->
              <dependency>
                  <groupId>com.alibaba</groupId>
                  <artifactId>druid-spring-boot-starter</artifactId>
              </dependency>
              <!--jdbc连接数据库-->
              <dependency>
                  <groupId>org.springframework.boot</groupId>
                  <artifactId>spring-boot-starter-jdbc</artifactId>
              </dependency>
      
              <!--服务注册与发现-->
              <dependency>
                  <groupId>com.alibaba.cloud</groupId>
                  <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
              </dependency>
              <dependency>
                  <groupId>com.alibaba.cloud</groupId>
                  <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
              </dependency>
              <!--web-->
              <dependency>
                  <groupId>org.springframework.boot</groupId>
                  <artifactId>spring-boot-starter-web</artifactId>
              </dependency>
          </dependencies>
      

      登录控制器(测试):

      /**
       * @author :fengwenzhe
       * @date :Created in 2023/2/3 11:41
       * 文件说明: </p>
       */
      @RestController
      @RequestMapping("admin")
      public class LoginCtrl {
      
          @PostMapping("login")
          public CommonResult login(@RequestBody Account account){
      
                  String token = JwtUtil.createJWT(UUID.randomUUID().toString(), account.getUserName(), 3600L*1000);
                  Map<String,Object> result = new HashMap<>();
                  result.put("username",account.getUserName());
                  result.put("token",token);
                  return CommonResult.ok(result);
          }
      
      }

      jcasbin的整合:

      jcasbin可以从文件加载角色权限信息,此处已整合成从数据库加载角色权限信息,为此,需要为jcasbin配置数据源(为了方便直接使用项目中的数据库,实际生产环境可以分开)以及模型文件路径:

      application.yml:

      org:
        jcasbin:
          model-path: jcasbin/basic_model.conf
      spring:
        datasource:
          url: jdbc:mysql://localhost:3306/jcasbin?useSSL=false
          driver-class-name: com.mysql.jdbc.Driver
          username: root
          password: root

      使用jcasbin首先需要配置jcasbin工厂类,初始化enforcer:

      @Component
      public class EnforcerFactory implements InitializingBean {
      
        private static Enforcer enforcer;
      
        @Autowired
        private EnforcerConfigProperties enforcerConfigProperties;
        @Autowired
        private DataSource dataSource;
      
      
        @Override
        public void afterPropertiesSet() throws Exception {
          //从数据库读取策略
      
          JDBCAdapter jdbcAdapter = new JDBCAdapter(dataSource);
      
          String path = this.getClass().getClassLoader().getResource("").getPath();
          enforcer = new Enforcer(path+enforcerConfigProperties.getModelPath(), jdbcAdapter);
          enforcer.loadPolicy();//Load the policy from DB.
        }
      
        public static Enforcer getEnforcer(){
          return enforcer;
        }
      }
      
      @Configuration
      @ConfigurationProperties(prefix = "org.jcasbin")
      @Data
      public class EnforcerConfigProperties {
      
        private String modelandroidPath;
      
      }

      此后所有对jcasbin的操作都基于唯一实例enforcer,此时就可以进行业务上的新增权限、角色、鉴权等的开发了。

      RoleController角色控制器:

      package com.distribute.admin.ctrl;
      
      import com.distribute.admin.service.EnforcerFactory;
      import com.distribute.common.CommonResult;
      import com.distribute.entity.PermissionEntity;
      import com.distribute.entity.Policy;
      import org.springframework.web.bind.annotation.PostMapping;
      import org.springframework.web.bind.annotation.RequestBody;
      import org.springframework.web.bind.annotation.RequestMapping;
      import org.springframework.web.bind.annotation.RestController;
      
      
      /**
       * @author :fengwenzhe
       * @date :Created in 2023/2/3 11:41
       * 文件说明: </p>
       */
      @RestController
      @RequestMapping("admin/role")
      public class RoleCtrl {
      
          /**
           *@Description <获取全部角色>
           *@return com.distribute.common.CommonResult
           *@date 2023/2/6 11:13
           *@auther fengwenzhee
           */
          @PostMapping("findAllRoleList")
          public CommonResult findAllRoleList(){
              return EnforcerFactory.findAllRoleList();
          }
      
      
          /**
           *@Description <批量新增 用户/角色 的权限>
           *@param permissionEntity
           *@return com.distribute.common.CommonResult
           *@date 2023/2/6 11:13
           *@auther fengwenzhee
           */
          @PostMapping("BATchAddPermission")
          public CommonResult batchAddPermission(@RequestBody PermissionEntity permissionEntity){
              return EnforcerFactory.batchAddPermission(permissionEntity);
          }
      
          /**
           *@Description <批量删除 用户/角色 的权限>
           *@param permissionEntity
           *@return com.distribute.common.CommonResult
           *@date 2023/2/5 17:08
           *@auther fengwenzhee
           */
          @PostMapping("batchDeletePermission")
          public CommonResult batchDeletePermission(@RequestBody PermissionEntity permissionEntity){
              return EnforcerFactory.batchDeletePermission(permissionEntity);
          }
      
          /**
           *@Description <批量为用户添加角色>
           *@param permissionEntity
           *@return com.distribute.common.CommonResult
           *@date 2023/2/6 11:17
           *@auther fengwenzhee
           */
          @PostMapping("batchAddRoleForUser")
          public CommonResult batchAddRoleForUser(@RequestBody PermissionEntity permissionEntity){
              return EnforcerFactory.batchAddRoleForUser(permissionEntity);
          }
      
          /**
           *@Description <批量删除用户角色>
           *@param permissionEntity
           *@return com.distribute.common.CommonResult
           *@date 2023/2/5 17:08
           *@auther fengwenzhee
           */
          @PostMapping("batchDeleteRoleForUser")
          public CommonResult batchDeleteRoleForUser(@RequestBody PermissionEntity permissionEntity){
              return EnforcerFactory.batchDeleteRoleForUser(permissionEntity);
          }
      
      
          /**
           *@Description <批量删除角色及其涉及到的用户与角色关系>
           *@param permissionEntity
           *@return com.distribute.common.CommonResult
           *@date 2023/2/5 17:08
           *@auther fengwenzhee
           */
          @PostMapping("batchDeleteRole")
          public CommonResult batchDeleteRole(@RequestBody PermissionEntity permissionEntity){
              return EnforcerFactory.batchDeleteRole(permissionEntity);
          }
      
      
          @PostMapping("checkPower")
          public  CommonResult checkPower(@RequestBody Policy policy){
              if(policy.getSub().equals("admin")){ //超级管理员直接放行
                  return CommonResult.ok(true);
              }
              String path = this.getClass().getClassLoader().getResource("").getPath();
              // Enforcer enforcer = new Enforcer(path+"/jcasbin/basic_model.conf", path+"/jcasbin/basic_policy.csv"); 从本地文件加载权限信息
      
              if (EnforcerFactory.getEnforcer().enforce("user_"+policy.getSub(), policy.getObj(), policy.getAct())) {
                  // permit alice to read data1
      
                  return CommonResult.ok(true);
              } else {
                  // deny the request, show an error
      
                  return CommonResult.ok(false);
              }
          }
      
      }
      

      基于RBAC的模型文件basic_model.conf:

      [request_definition]
      r = sub, obj, act
      
      [policy_definition]
      p = sub, obj, act
      
      [role_definition]
      g = _, _
      
      [policy_effect]
      e = some(where (p.eft == allow))
      
      [matchers]
      m = g(r.sub, p.sub) && r.obj == p.obj && r.act == p.act

      在RoleController角色控制器中已经写好了一些方法,后续可以根据需要自行新增,入参实体我简单封装了一下,然后循环进行批量操作:

      PermissionEntity:

      @Data
      public class PermissionEntity  implements Serializable {
          private Integer type; //操作对象是用户还是角色
          private List<Policy> policyList;
      
      }
      

      Policy:

      @Data
      public class Policy implements Serializable {
          /**想要访问资源的用户 或者角色*/
          private String sub;
      
          /**将要访问的资源,可以使用  * 作为通配符,例如/user/* */
          private String obj;
      
          /**用户对资源执行的操作。HTTP方法,GET、POST、PUT、DELETE等,可以使用 * 作为通配符*/
          private String act;
      
          /**
           *
           * @param sub 想要访问资源的用户 或者角色
           * @param obj 将要访问的资源,可以使用  * 作为通配符,例如/user/*
           * @param act 用户对资源执行的操作。HTTP方法,GET、POST、PUT、DELETE等,可以使用 * 作为通配符
           */
          public Policy(String sub, String obj, String act) {
              super();
              this.sub = sub;
              this.obj = obj;
              this.act = act;
          }
      
          @Override
          public String toString() {
              return "Policy [sub=" + sub + ", obj=" + obj + ", act=" + act + "]";
          }
      
      }

      在EnforcerFactory中新增RoleController对应方法:

       public static CommonResult batchAddPermission(PermissionEntity permissionEntity) {
          if(permissionEntity.getType()==null){
            return CommonResult.error(HttpStatusCode.OPERATION_TYPE_REQUIRED);
          }
          if(permissionEntity.getType()==1){
            //操作对象为用户
            for (Policy policy:permissionEntity.getPolicyList()){
              enforcer.addPermissionForUser("user_"+policy.getSub(),policy.getObj(),policy.getAct());
            }
          }else if(permissionEntity.getType()==2){
            //操作对象为角色
            for (Policy policy:permissionEntity.getPolicyList()){
              enforcer.addPermissionForUser("role_"+policy.getSub(),policy.getObj(),policy.getAct());
            }
          }else {
            return CommonResult.error(HttpStatusCode.OPERATION_TYPE_ERROR);
          }
          return CommonResult.ok(true);
        }
      
        public static CommonResult batchAddRoleForUser(PermissionEntity permissionEntity) {
          for (Policy policy:permissionEntity.getPolicyList()){
            enforcer.addRoleForUser("user_"+policy.getSub(),"role_"+policy.getObj());
          }
          return CommonResult.ok(true);
        }
      
        public static CommonResult batchDeleteRole(PermissionEntity permissionEntity) {
      
          for (Policy policy:permissionEntity.getPolicyList()){
            enforcer.deleteRole("role_"+policy.getSub());
          }
          return CommonResult.ok(true);
        }
      
        public static CommonResult batchDeleteRoleForUser(PermissionEntity permissionEntity) {
          for (Policy policy:permissionEntity.getPolicyList()){
            enforcer.deleteRoleForUser("user_"+policy.getSub(),"role_"+policy.getObj());
          }
          return CommonResult.ok(true);
        }
      
        public static CommonResult batchDeletePermission(PermissionEntity permissionEntity) {
          if(permissionEntity.getType()==null){
            return CommonResult.error(HttpStatusCode.OPERATION_TYPE_REQUIRED);
          }
          if(permissionEntity.getType()==1){
            //操作对象为用户
            for (Policy policy:permissionEntity.getPolicyList()){
              enforcer.deletePermissionForUser("user_"+policy.getSub(),policy.getObj(),policy.getAct());
            }
          }else if(permissionEntity.getType()==2){
            //操作对象为角色
            for (Policy policy:permissionEntity.getPolicyList()){
              enforcer.deletePermissionForUser("role_"+policy.getSub(),policy.getObj(),policy.getAct());
            }
          }else {
            return CommonResult.error(HttpStatusCode.OPERATION_TYPE_ERROR);
          }
          return CommonResult.ok(true);
        }
      
        public static CommonResult findAllRoleList() {
          List<String> roles = new ArrayList<>();
          for (String role:enforcer.getAllRoles()){
            roles.add(role.split("role_")[1]);
          }
          return CommonResult.ok(roles);
        }
      

      PS:jcasbin中对权限的把控是基于subject的,所以无法区分权限是用户还是角色的,在这里用前缀是user_还是role_来区分,数据库测试数据如下:

      springcloud-gateway整合jwt+jcasbin实现权限控制的详细过程

      意思是role_管理员角色下有两个权限,分别是/c/main/getUser POST,和/c/main/deleteUser DELETE,v1字段可以视为资源,v2为请求动作,

      user_fengwenzhe用户具有role_管理员的角色,鉴权时可以如下进行:

       String path = request.getPath().pathWithinApplication().value();
                     String method = request.getMethodValue();
                     Policy checkPower = new Policy(userName,pathjavascript,method);
                     CommonResult result = adminUserInterfaceFeign.checkPower(checkPower);

      比如此时我传入userName=fengwenzhe,path=/c/main/getUser method=POST,就可以鉴权成功,因为有前缀存在,代码中自行补足'user_':

      if (EnforcerFactory.getEnforcer().enforce("user_"+policy.getSub(), policy.getObj(), policy.getAct())) {
                  // permit  to read data
      
                  return CommonResult.ok(true);
              } else {
                  // deny the request, show an error
      
                  return CommonResult.ok(false);
              }

      feign项目:

      只定义feign相关接口与实现类:

      /**
       * @author :fengwenzhe
       * @date :Created in 2023/2/2 21:48
       * 文件说明: </p>
       */
      @FeignClient(value = "platform-admin-user",fallback = AdminUseandroidrFeignImpl.class)
      @Component
      public interface AdminUserInterfaceFeign {
      
          @PostMapping("admin/role/checkPower")
          CommonResult checkPower(@RequestBody Policy policy);
      
      /**
           *@Description <批量新增 用户/角色 的权限>
           *@param permissionEntity
           *@return com.distribute.common.CommonResult
           *@date 2023/2/6 11:13
           *@auther fengwenzhee
           */
          @PostMapping("batchAddPermission")
           CommonResult batchAddPermission(@RequestBody PermissionEntity permissionEntity);
      }
      package com.distribute.impl;
      
      import com.distribute.AdminUserInterfaceFeign;
      import com.distribute.common.CommonResult;
      import com.distribute.common.HttpStatusCode;
      import com.distribute.entity.PermissionEntity;
      import com.distribute.entity.Policy;
      import org.springframework.stereotype.Component;
      import org.springframework.web.bind.annotation.RequestBody;
      
      /**
       * @author :fengwenzhe
       * @date :Created in 2023/2/2 22:03
       * 文件说明: </p>
       */
      @Component
      public class AdminUserFeignImpl implements AdminUserInterfaceFeign {
      
          @Override
          public CommonResult checkPower(@RequestBody Policy power) {
              return CommonResult.error(HttpStatusCode.REQUEST_TIMEOUT);
          }
      
      
          @Override
          public CommonResult batchAddPermission(PermissionEntity permissionEntity) {
      
              return CommonResult.error(HttpStatusCode.REQUEST_TIMEOUT);
          }
      }

      gateway启动类加入feign相关注释:

      @SpringBootApplication
      @ComponentScan(basePackages = {"com.distribute"})
      @EnableFeignClients(basePackages = "com.distribute") //因为feign接口定义的包与项目不同级  项目默认扫描com.distribute.gateway
      public class GatewayApplication {
      
          public static void main(String[] args) {
              SpringApplication.run(GatewayApplication.class, args);
          }
      
      }
      

      此时启动gateway通过feign调用admin-user项目中的方法依然还是报错,需要增加如下配置类:

      /**
       *@Description <手动注入Bean Spring Cloud Gateway是基于WebFlux的,是ReactiveWeb,所以HttpMessageConverters不会自动注入。如果不注入,springcloudGateway调用feign时会报错
       * No qualifying bean of type 'org.springframework.boot.autoconfigure.http.HttpMessageConverters>
       */
      @Configuration
      public class FeignConfig {
          @Bean
          @ConditionalOnMissingBean
          public HttpMessageConverters messageConverters(ObjectProvider<HttpMessageConverter<?>> converters) {
              return new HttpMessageConverters(converters.orderedStream().collect(Collectors.toList()));
          }
      }

      最后自行设置异常信息:

      没有权限:

      {
          "code": 401,
          "data": "",
          "message": "没有被授权或者授权已经失效",
          "success": false
      }

      鉴权成功:

      {
          "data": [
              "管理员"
          ],
          "success": true,
          "code": 200,
          "message": "请求已经成功处理"
      }

      jwt工具类:

      @Component
      public class JwtUtil {
      
          //加密 解密时的密钥 用来生成key
          public static final String JWT_KEY = "IT1995";
      
          /**
           * 生成加密后的秘钥 secretKey
           * @return
           */
          public static SecretKey generalKey() {
              byte[] encodedKey = Base64.getDecoder().decode(JwtUtil.JWT_KEY);
              SecretKey key = new SecretKeySpec(encodedKey, 0, encodedKey.length, "AES");
              return key;
          }
      
      
          public static String createJWT(String id, String subject, long ttlMillis){
      
              SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256; //指定签名的时候使用的签名算法,也就是header那部分,jwt已经将这部分内容封装好了。
              long nowMillis = System.currentTimeMillis();//生成JWT的时间
              Date now = new Date(nowMillis);
              SecretKey key = generalKey();//生成签名的时候使用的秘钥secret,这个方法本地封装了的,一般可以从本地配置文件中读取,切记这个秘钥不能外露哦。它就是你服务端的私钥,在任何场景都不应该流露出去。一旦客户端得知这个secret, 那就意味着客户端是可以自我签发jwt了。
              JwtBuilder builder = Jwts.builder() //这里其实就是new一个JwtBuilder,设置jwt的body
      //                .setClaims(claims)            //如果有私有声明,一定要先设置这个自己创建的私有的声明,这个是给builder的claim赋值,一旦写在标准的声明赋值之后,就是覆盖了那些标准的声明的
                      .setId(id)                    //设置jti(JWT ID):是JWT的唯一标识,根据业务需要,这个可以设置为一个不重复的值,主要用来作为一次性token,从而回避重放攻击。
                      .setIssuedAt(now)            //iat: jwt的签发时间
                      .setSubject(subject)        //sub(Subject):代表这个JWT的主体,即它的所有人,这个是一个json格式的字符串,可以存放什么userid,roldid之类的,作为什么用户的唯一标志。
                      .signWith(signatureAlgorithm, key);//设置签名使用的签名算法和签名使用的秘钥
              if (ttlMillis >= 0) {
                  long expMillis = nowMillis + ttlMillis;
                  Date exp = new Date(expMillis);
                  builder.setExpiration(exp);        //设置过期时间
              }
              return builder.compact();            //就开始压缩为xxxxxxxxxxxxxx.xxxxxxxxxxxxxxx.xxxxxxxxxxxxx这样的jwt
          }
      
          public static Claims parseJWT(String jwt){
      
              SecretKey key = generalKey();  //签名秘钥,和生成的签名的秘钥一模一样
              Claims claims = Jwts.parser()  //得到DefaultJwtParser
                      .setSigningKey(key)         //设置签名的秘钥
                      .parseClaimsJws(jwt).getBody();//设置需要解析的jwt
              return claims;
          }
      
          public static void main(String[] args){
      
              Account account = new Accoun开发者_JAVA教程t();
              account.setUserName("it1995");
              account.setPassword("123456");
              String jwt = createJWT(UUID.randomUUID().toString(), JSONUtil.toJsonStr(account), 3600 * 24);
      
              System.out.println("加密后:" + jwt);
      
              //解密
              Claims claims = parseJWT(jwt);
              System.out.println("解密后:" + claims.getSubject());
          }
      }
      

      统一结果返回类:

      package com.distribute.common;
      
      import lombok.AllArgsConstructor;
      import lombok.Data;
      
      /**
       * @author :fengwenzhe
       * @date :Created in 2023/2/2 20:38
       * 文件说明: </p>
       */
      @Data
      @AllArgsConstructor
      public class CommonResult {
          private Object data;
          private boolean success;
          private Integer code;
          private String message;
          //私有化,防止new
          private CommonResult() {}
      
          //成功
          public static CommonResult ok(Object data,  HttpStatusCode statusCode) {
              return new CommonResult(data,true,statusCode.code,statusCode.zhMessage);  //code 也可以使用字典管理
          }
      
          //成功返回 重载 message没有特别要求
          public static CommonResult ok(Object data) {
              return CommonResult.ok(data, HttpStatusCode.OK); //message 也可以使用字典管理
          }
      
          // 失败
          public static CommonResult error( HttpStatusCode statusCode) {
              return new CommonResult("",false, statusCode.code, statusCode.zhMessage);
          }
      }
      
      package com.distribute.common;
      
      import lombok.Data;
      
      public enum HttpStatusCode {
          /**
           * http状态码枚举所有状态码注解
           */
          USERNAME_PASSWORD_DENY(1000, "username password deny", "用户名或密码错误"),
          OK(200, "OK", "请求已经成功处理"),
          OPERATION_TYPE_ERROR(512, "", "操作类型不正确");
      
          //错误码
          public Integer code;
          //提示信息
          public String enMessage;
      
          //提示信息
          public String zhMessage;
      
      
          HttpStatusCode(int code, String enMessage, String zhMessage) {
              this.code = code;
              this.enMessage = enMessage;
              this.zhMessage = zhMessage;
          }
      }

      到此这篇关于springcloud-gateway整合jwt+jcasbin实现权限控制的文章就介绍到这了,更多相关springcloud-gateway整合jwt+jcasbin内容请搜索我们以前的文章或继续浏览下面的相关文章希望大家以后多多支持我们!

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