在spring中获取当前mongo用户角色

import com.mongodb.BasicDBObject;
import com.mongodb.CommandResult;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.stereotype.Component;

@Component
public class MongoUserRoleService {

    @Autowired
    private MongoTemplate mongoTemplate;

    public void getCurrentUserRoles() {
        // 获取当前数据库连接
        DB db = mongoTemplate.getDb();

        // 创建命令对象
        BasicDBObject command = new BasicDBObject();
        command.put("usersInfo", 1);
        command.put("user", db.getMongo().getCredentials().getUserName());

        // 执行命令
        CommandResult result = db.command(command);

        // 获取用户角色信息
        BasicDBList users = (BasicDBList) result.get("users");
        for (Object user : users) {
            BasicDBObject userInfo = (BasicDBObject) user;
            BasicDBList roles = (BasicDBList) userInfo.get("roles");
            for (Object role : roles) {
                System.out.println("Role: " + role);
            }
        }
    }
}