springcloud-gateway整合jwt+jcasbin实现权限控制
阅读原文时间:2023年07月08日阅读:2

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。

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*

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

<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>  

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(request)){  
        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/checkPower

ConfigProperty:

@Component
@ConfigurationProperties(prefix = "distribute.config")
@Data
public class ConfigProperty {
List 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。

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:


*/
@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 modelPath;

}

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:


*/
@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

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 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 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:

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,path,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);  
    }

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:


*/
@FeignClient(value = "platform-admin-user",fallback = AdminUserFeignImpl.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:


*/
@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> 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 Account();  
    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:


*/
@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;  
}  

}

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