Security核心配置

创建ngroute-framework工程作为 Security核心配置

1.引入pom

<!-- spring security 安全认证 -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-security</artifactId>
</dependency>

2.token认证过滤器JWT

import com.cmos.springcloud.common.utils.StringUtils;
import com.cmos.springcloud.domain.LoginUser;
import com.cmos.springcloud.service.TokenService;
import com.cmos.springcloud.util.SecurityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * token过滤器 验证token有效性
 *
 * @author ruoyi
 */
@Component
public class JwtAuthenticationTokenFilter extends OncePerRequestFilter
{
    @Autowired
    private TokenService tokenService;

    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
            throws ServletException, IOException
    {
        LoginUser loginUser = tokenService.getLoginUser(request);
        if (StringUtils.isNotNull(loginUser) && StringUtils.isNull(SecurityUtils.getAuthentication()))
        {
            tokenService.verifyToken(loginUser);
            UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(loginUser, null, loginUser.getAuthorities());
            authenticationToken.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
            SecurityContextHolder.getContext().setAuthentication(authenticationToken);
        }
        chain.doFilter(request, response);
    }
}

3.退出处理类

import com.alibaba.fastjson.JSON;
import com.cmos.springcloud.common.constant.HttpStatus;
import com.cmos.springcloud.common.domain.AjaxResult;
import com.cmos.springcloud.common.utils.ServletUtils;
import com.cmos.springcloud.common.utils.StringUtils;
import com.cmos.springcloud.domain.LoginUser;
import com.cmos.springcloud.service.TokenService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.core.Authentication;
import org.springframework.security.web.authentication.logout.LogoutSuccessHandler;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * 自定义退出处理类 返回成功
 *
 * @author ruoyi
 */
@Configuration
public class LogoutSuccessHandlerImpl implements LogoutSuccessHandler
{
    @Autowired
    private TokenService tokenService;

    /**
     * 退出处理
     *
     * @return
     */
    @Override
    public void onLogoutSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication)
            throws IOException, ServletException
    {
        LoginUser loginUser = tokenService.getLoginUser(request);
        if (StringUtils.isNotNull(loginUser))
        {
            String userName = loginUser.getUsername();
            // 删除用户缓存记录
            tokenService.delLoginUser(loginUser.getToken());
            // 记录用户退出日志
        }
        ServletUtils.renderString(response, JSON.toJSONString(AjaxResult.error(HttpStatus.SUCCESS, "退出成功")));
    }
}

4.SecurityConfig核心配置

import com.cmos.springcloud.security.filter.JwtAuthenticationTokenFilter;
import com.cmos.springcloud.security.handle.LogoutSuccessHandlerImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

/**
 * spring security配置
 *
 * @author ruoyi
 */
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter
{
    /**
     * 自定义用户认证逻辑
     */
    @Autowired
    private UserDetailsService userDetailsService;
    /**
     * 退出处理类
     */
    @Autowired
    private LogoutSuccessHandlerImpl logoutSuccessHandler;
    /**
     * token认证过滤器
     */
    @Autowired
    private JwtAuthenticationTokenFilter authenticationTokenFilter;
    /**
     * 解决 无法直接注入 AuthenticationManager
     *
     * @return
     * @throws Exception
     */
    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception
    {
        return super.authenticationManagerBean();
    }

    /**
     * anyRequest          |   匹配所有请求路径
     * access              |   SpringEl表达式结果为true时可以访问
     * anonymous           |   匿名可以访问
     * denyAll             |   用户不能访问
     * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
     * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
     * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
     * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
     * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
     * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
     * permitAll           |   用户可以任意访问
     * rememberMe          |   允许通过remember-me登录的用户访问
     * authenticated       |   用户登录后可访问
     */
    @Override
    protected void configure(HttpSecurity httpSecurity) throws Exception
    {
        httpSecurity
                // CSRF禁用，因为不使用session
                .csrf().disable()
                // 基于token，所以不需要session
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
                // 过滤请求
                .authorizeRequests()
                // 对于登录login 验证码captchaImage 允许匿名访问
                .antMatchers("/order/user/register","/order/user/login","/system/account/**").anonymous()
                // 除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated()
                .and()
                .headers().frameOptions().disable();
        httpSecurity.logout().logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler);
        // 添加JWT filter
        httpSecurity.addFilterBefore(authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);

    }


    /**
     * 强散列哈希加密实现
     */
    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder()
    {
        return new BCryptPasswordEncoder();
    }

    /**
     * 身份认证接口
     */
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception
    {
        auth.userDetailsService(userDetailsService).
                passwordEncoder(bCryptPasswordEncoder());
    }
}

5.用户鉴权实体类

import com.cmos.springcloud.common.domain.T_User;
import com.fasterxml.jackson.annotation.JsonIgnore;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import java.util.Collection;
import java.util.Set;

/**
 * 登录用户身份权限
 *
 * @author ruoyi
 */
public class LoginUser implements UserDetails
{
    private static final long serialVersionUID = 1L;

    /**
     * 用户唯一标识
     */
    private String token;

    /**
     * 登录时间
     */
    private Long loginTime;

    /**
     * 过期时间
     */
    private Long expireTime;

    /**
     * 登录IP地址
     */
    private String ipaddr;

    /**
     * 登录地点
     */
    private String loginLocation;

    /**
     * 浏览器类型
     */
    private String browser;

    /**
     * 操作系统
     */
    private String os;

    /**
     * 权限列表
     */
    private Set<String> permissions;

    /**
     * 用户信息
     */
    private T_User user;

    public String getToken()
    {
        return token;
    }

    public void setToken(String token)
    {
        this.token = token;
    }

    public LoginUser()
    {
    }

    public LoginUser(T_User user)
    {
        this.user = user;
    }

    @JsonIgnore
    @Override
    public String getPassword()
    {
        return user.getPassword();
    }

    @Override
    public String getUsername()
    {
        return user.getUserName();
    }

    /**
     * 账户是否未过期,过期无法验证
     */
    @JsonIgnore
    @Override
    public boolean isAccountNonExpired()
    {
        return true;
    }

    /**
     * 指定用户是否解锁,锁定的用户无法进行身份验证
     *
     * @return
     */
    @JsonIgnore
    @Override
    public boolean isAccountNonLocked()
    {
        return true;
    }

    /**
     * 指示是否已过期的用户的凭据(密码),过期的凭据防止认证
     *
     * @return
     */
    @JsonIgnore
    @Override
    public boolean isCredentialsNonExpired()
    {
        return true;
    }

    /**
     * 是否可用 ,禁用的用户不能身份验证
     *
     * @return
     */
    @JsonIgnore
    @Override
    public boolean isEnabled()
    {
        return true;
    }

    public Long getLoginTime()
    {
        return loginTime;
    }

    public void setLoginTime(Long loginTime)
    {
        this.loginTime = loginTime;
    }

    public String getIpaddr()
    {
        return ipaddr;
    }

    public void setIpaddr(String ipaddr)
    {
        this.ipaddr = ipaddr;
    }

    public String getLoginLocation()
    {
        return loginLocation;
    }

    public void setLoginLocation(String loginLocation)
    {
        this.loginLocation = loginLocation;
    }

    public String getBrowser()
    {
        return browser;
    }

    public void setBrowser(String browser)
    {
        this.browser = browser;
    }

    public String getOs()
    {
        return os;
    }

    public void setOs(String os)
    {
        this.os = os;
    }

    public Long getExpireTime()
    {
        return expireTime;
    }

    public void setExpireTime(Long expireTime)
    {
        this.expireTime = expireTime;
    }

    public Set<String> getPermissions()
    {
        return permissions;
    }

    public void setPermissions(Set<String> permissions)
    {
        this.permissions = permissions;
    }

    public T_User getUser()
    {
        return user;
    }

    public void setUser(T_User user)
    {
        this.user = user;
    }

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities()
    {
        return null;
    }
}

6.token验证处理

import com.cmos.springcloud.common.constant.Constants;
import com.cmos.springcloud.common.utils.IdUtils;
import com.cmos.springcloud.common.utils.RedisCache;
import com.cmos.springcloud.common.utils.StringUtils;
import com.cmos.springcloud.domain.LoginUser;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * token验证处理
 *
 * @author ruoyi
 */
@Component
public class TokenService
{
    // 令牌自定义标识
    @Value("${token.header}")
    private String header;

    // 令牌秘钥
    @Value("${token.secret}")
    private String secret;

    // 令牌有效期（默认30分钟）
    @Value("${token.expireTime}")
    private int expireTime;

    protected static final long MILLIS_SECOND = 1000;

    protected static final long MILLIS_MINUTE = 60 * MILLIS_SECOND;

    private static final Long MILLIS_MINUTE_TEN = 20 * 60 * 1000L;

    @Autowired
    private RedisCache redisCache;

    /**
     * 获取用户身份信息
     *
     * @return 用户信息
     */
    public LoginUser getLoginUser(HttpServletRequest request)
    {
        // 获取请求携带的令牌
        String token = getToken(request);
        if (StringUtils.isNotEmpty(token))
        {
            Claims claims = parseToken(token);
            // 解析对应的权限以及用户信息
            String uuid = (String) claims.get(Constants.LOGIN_USER_KEY);
            String userKey = getTokenKey(uuid);
            LoginUser user = redisCache.getCacheObject(userKey);
            return user;
        }
        return null;
    }

    /**
     * 设置用户身份信息
     */
    public void setLoginUser(LoginUser loginUser)
    {
        if (StringUtils.isNotNull(loginUser) && StringUtils.isNotEmpty(loginUser.getToken()))
        {
            refreshToken(loginUser);
        }
    }

    /**
     * 删除用户身份信息
     */
    public void delLoginUser(String token)
    {
        if (StringUtils.isNotEmpty(token))
        {
            String userKey = getTokenKey(token);
            redisCache.deleteObject(userKey);
        }
    }

    /**
     * 创建令牌
     *
     * @param loginUser 用户信息
     * @return 令牌
     */
    public String createToken(LoginUser loginUser)
    {
        String token = IdUtils.fastUUID();
        loginUser.setToken(token);
        refreshToken(loginUser);

        Map<String, Object> claims = new HashMap<>();
        claims.put(Constants.LOGIN_USER_KEY, token);
        return createToken(claims);
    }

    /**
     * 验证令牌有效期，相差不足20分钟，自动刷新缓存
     *
     * @param loginUser
     * @return 令牌
     */
    public void verifyToken(LoginUser loginUser)
    {
        long expireTime = loginUser.getExpireTime();
        long currentTime = System.currentTimeMillis();
        if (expireTime - currentTime <= MILLIS_MINUTE_TEN)
        {
            refreshToken(loginUser);
        }
    }

    /**
     * 刷新令牌有效期
     *
     * @param loginUser 登录信息
     */
    public void refreshToken(LoginUser loginUser)
    {
        loginUser.setLoginTime(System.currentTimeMillis());
        loginUser.setExpireTime(loginUser.getLoginTime() + expireTime * MILLIS_MINUTE);
        // 根据uuid将loginUser缓存
        String userKey = getTokenKey(loginUser.getToken());
        redisCache.setCacheObject(userKey, loginUser, expireTime, TimeUnit.MINUTES);
    }

    /**
     * 从数据声明生成令牌
     *
     * @param claims 数据声明
     * @return 令牌
     */
    private String createToken(Map<String, Object> claims)
    {
        String token = Jwts.builder()
                .setClaims(claims)
                .signWith(SignatureAlgorithm.HS512, secret).compact();
        return token;
    }

    /**
     * 从令牌中获取数据声明
     *
     * @param token 令牌
     * @return 数据声明
     */
    private Claims parseToken(String token)
    {
        return Jwts.parser()
                .setSigningKey(secret)
                .parseClaimsJws(token)
                .getBody();
    }

    /**
     * 从令牌中获取用户名
     *
     * @param token 令牌
     * @return 用户名
     */
    public String getUsernameFromToken(String token)
    {
        Claims claims = parseToken(token);
        return claims.getSubject();
    }

    /**
     * 获取请求token
     *
     * @param request
     * @return token
     */
    private String getToken(HttpServletRequest request)
    {
        String token = request.getHeader(header);
        if (StringUtils.isNotEmpty(token) && token.startsWith(Constants.TOKEN_PREFIX))
        {
            token = token.replace(Constants.TOKEN_PREFIX, "");
        }
        return token;
    }

    private String getTokenKey(String uuid)
    {
        return Constants.LOGIN_TOKEN_KEY + uuid;
    }
}

7.安全服务工具类

import com.cmos.springcloud.common.constant.HttpStatus;
import com.cmos.springcloud.common.exception.CustomException;
import com.cmos.springcloud.domain.LoginUser;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;

/**
 * 安全服务工具类
 *
 * @author ruoyi
 */
public class SecurityUtils
{
    /**
     * 获取用户账户
     **/
    public static String getUsername()
    {
        try
        {
            return getLoginUser().getUsername();
        }
        catch (Exception e)
        {
            throw new CustomException("获取用户账户异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取用户
     **/
    public static LoginUser getLoginUser()
    {
        try
        {
            return (LoginUser) getAuthentication().getPrincipal();
        }
        catch (Exception e)
        {
            throw new CustomException("获取用户信息异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取Authentication
     */
    public static Authentication getAuthentication()
    {
        return SecurityContextHolder.getContext().getAuthentication();
    }

    /**
     * 生成BCryptPasswordEncoder密码
     *
     * @param password 密码
     * @return 加密字符串
     */
    public static String encryptPassword(String password)
    {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.encode(password);
    }

    /**
     * 判断密码是否相同
     *
     * @param rawPassword 真实密码
     * @param encodedPassword 加密后字符
     * @return 结果
     */
    public static boolean matchesPassword(String rawPassword, String encodedPassword)
    {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.matches(rawPassword, encodedPassword);
    }

    /**
     * 是否为管理员
     *
     * @param userId 用户ID
     * @return 结果
     */
    public static boolean isAdmin(Long userId)
    {
        return userId != null && 1L == userId;
    }
}

以上是Security核心配置，接下来是服务端引用

服务端配置

1.引入 Security核心配置ngroute-framework

<!-- 核心类 -->
 <dependency>
     <groupId>com.cmos.springcloud</groupId>
     <artifactId>ngroute-framework</artifactId>
     <version>${project.version}</version>
 </dependency>

2.修改yml配置token

令牌标识 Authorization 即请求头的header

# token配置
token:
  # 令牌自定义标识
  header: Authorization
  # 令牌密钥
  secret: abcdefghijklmnopqrstuvwxyz
  # 令牌有效期（默认30分钟）
  expireTime: 30

3.实现security的UserDetailsService接口

import com.alibaba.fastjson.JSONObject;
import com.cmos.springcloud.common.domain.AjaxResult;
import com.cmos.springcloud.common.domain.T_User;
import com.cmos.springcloud.common.utils.StringUtils;
import com.cmos.springcloud.domain.LoginUser;
import com.cmos.springcloud.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.Map;

/**
 * @author lizhe
 * @date 2021-05-18 8:56
 */
@Service
public class UserDetailsServiceImpl implements UserDetailsService {
    @Autowired
    private UserService userService;
    @Override
    public UserDetails loadUserByUsername(String account) throws UsernameNotFoundException {
        T_User user = userService.selectUserByUserName(account);
        if(StringUtils.isNull(account)){
            throw new RuntimeException("异常");
        }
        return createLoginUser(user);
    }
    public UserDetails createLoginUser(T_User user)
    {
        return new LoginUser(user);
    }
}

4.实现登录接口

拿到返回的token密钥，前端在调用接口时，携带密钥信息

@PostMapping(value = "/login")
public AjaxResult login(@RequestBody Map<String,Object> map) {
    // 用户验证
    Authentication authentication = null;
    Map<String, Object> params = (Map<String, Object>) map.get("params");
    String username = params.get("account") == null ? "" : String.valueOf(params.get("account"));
    String password = params.get("password") == null ? "" : String.valueOf(params.get("password"));
    // 该方法会去调用UserDetailsServiceImpl.loadUserByUsername
    UsernamePasswordAuthenticationToken usernamePasswordAuthenticationToken = new UsernamePasswordAuthenticationToken(username, password);
    authentication = authenticationManager.authenticate(usernamePasswordAuthenticationToken);
    LoginUser loginUser = (LoginUser) authentication.getPrincipal();
    return AjaxResult.success(tokenService.createToken(loginUser));
}

返回结果实例

5.密钥测试

header携带密钥Authorization，请求接口成功

客户端通过openfeign携带密钥请求服务端接口

实现RequestInterceptor，相当于拦截器，处理请求头，添加header，携带密钥

1.配置FeignRequestConfig

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import feign.Request;
import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.util.StringUtils;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.util.*;

/**
 * @author lizhe
 * @date 2021-08-10 10:00
 */
@Configuration
public class FeignRequestConfig implements RequestInterceptor {
    @Override
    public void apply(RequestTemplate template) {

        HttpServletRequest request = getServletRequest();
        if (null == request) {
            return;
        }

        template.header("Authorization", getHeaders(request));
    }

    private HttpServletRequest getServletRequest() {
        return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
    }

    private String getHeaders(HttpServletRequest request) {
        return request.getHeader("Authorization");
    }


}

2.客户端controller接口

@PostMapping(value = "/algorithm/CollaborativeFiltering")
    @SentinelResource(value = "fallback")//没有配置
    //@SentinelResource(value = "fallback",fallback = "handlerFallback")//fallback只负责业务
    //@SentinelResource(value = "fallback",blockHandler = "blockHandler")//blockHandler只负责Sentinel控制台配置
    //如果两者都配置则 被限流降级而抛出BlockException时只会进入blockHandler
    //@SentinelResource(value = "fallback",fallback = "handlerFallback",blockHandler = "blockHandler")
    //exceptionsToIgnore排除异常
    //@SentinelResource(value = "fallback",fallback = "handlerFallback",blockHandler = "blockHandler", exceptionsToIgnore={IllegalArgumentException.class})
    public AjaxResult filtering(@RequestBody TreeMap<String,Object> map){
        return algorithmServcie.filtering(map);
    }

2.服务调用

import com.cmos.springcloud.common.domain.AjaxResult;
import com.cmos.springcloud.config.FeignRequestConfig;
import com.cmos.springcloud.service.impl.AlgorithmServcieImpl;
import com.cmos.springcloud.service.impl.UserServiceImpl;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.Map;
import java.util.TreeMap;

/**
 * @author lizhe
 * @date 2021-05-08 22:16
 *
 */
@Component
@FeignClient(value = "ngroute-server",fallback = AlgorithmServcieImpl.class)
public interface AlgorithmServcie {
    @PostMapping("/algorithm/CollaborativeFiltering")
    AjaxResult filtering(@RequestBody TreeMap<String,Object> requestMap);
}

3.如果服务端异常，走客户端本地的兜底接口，防止异常

import com.cmos.springcloud.common.domain.AjaxResult;
import com.cmos.springcloud.service.AlgorithmServcie;
import org.springframework.stereotype.Component;

import java.util.HashMap;
import java.util.Map;
import java.util.TreeMap;

/**
 * @author lizhe
 * @date 2021-05-08 22:16
 */
@Component
public class AlgorithmServcieImpl implements AlgorithmServcie {
    @Override
    public AjaxResult filtering(TreeMap<String, Object> requestMap) {
        return AjaxResult.error(444,"接口太火爆了,客户端繁忙！");
    }
}