之前写过一篇微服务网关Zuul,今天介绍gateWay,二者大同小异,但各有优势,大家可以都了解一下,拓展自己的知识面;
主要作用
没有网关的话存在的问题
加入网关之后
网关整合多个微服务形成一套或多套系统
所以建议做多套网关,每个网关整合自己的一套微服务
不同的微服务一般会有不同的网络地址,而外部客户端可能需要调用多个服务的接口才能完成一个业务需求,如果让客户端直接与各个微服务通信,会有以下的问题:
以上这些问题可以借助网关解决。
网关是介于客户端和服务器端之间的中间层,所有的外部请求都会先经过 网关这一层。也就是说,API 的实现方面更多的考虑业务逻辑,而安全、性能、监控可以交由 网关来做,这样既提高业务灵活性又不缺安全性,典型的架构图如图所示:
优点如下:
总结:微服务网关就是一个系统,通过暴露该微服务网关系统,方便我们进行相关的鉴权,安全控制,日志统一处理,易于监控的相关功能。
实现微服务网关的技术有很多,
我们使用gateway这个网关技术,无缝衔接到基于spring cloud的微服务开发中来。
gateway官网:
https://spring.io/projects/spring-cloud-gateway
由于我们开发的系统 有包括前台系统和后台系统,后台的系统 给管理员使用。那么也需要调用各种微服务,所以我们针对 系统管理搭建一个网关系统。分析如下:
由上可知道,由于 需要有多个网关,所以为了管理方便。我们新建一个项目,打包方式为pom,在里面建立各种网关系统模块即可。如图所示:
(1)引入依赖
修改changgou-gateway工程,打包方式为pom
pom.xml如下:
<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>changgou-parentartifactId>
<groupId>com.changgougroupId>
<version>1.0-SNAPSHOTversion>
parent>
<modelVersion>4.0.0modelVersion>
<artifactId>changgou-gatewayartifactId>
<packaging>pompackaging>
<modules>
<module>changgou-gateway-webmodule>
modules>
<dependencies>
<dependency>
<groupId>org.springframework.cloudgroupId>
<artifactId>spring-cloud-starter-gatewayartifactId>
dependency>
<dependency>
<groupId>org.springframework.cloudgroupId>
<artifactId>spring-cloud-starter-netflix-hystrixartifactId>
dependency>
<dependency>
<groupId>org.springframework.cloudgroupId>
<artifactId>spring-cloud-starter-netflix-eureka-clientartifactId>
dependency>
dependencies>
project>
在changgou-gateway工程中,创建 changgou-gateway-web工程,该网关主要用于对后台微服务进行一个调用操作,将多个微服务串联到一起。
pom.xml:
<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>changgou-gatewayartifactId>
<groupId>com.changgougroupId>
<version>1.0-SNAPSHOTversion>
parent>
<modelVersion>4.0.0modelVersion>
<artifactId>changgou-gateway-webartifactId>
<description>
普通web请求网关
description>
project>
(2)引导类
在changgou-gateway-web中创建一个引导类com.changgou.GatewayWebApplication,代码如下:
@SpringBootApplication
@EnableEurekaClient
public class GatewayWebApplication {
public static void main(String[] args) {
SpringApplication.run(GatewayWebApplication.class,args);
}
}
(3)application.yml配置
在changgou-gateway-web的resources下创建application.yml,代码如下:
spring:
application:
name: gateway-web
server:
port: 8001
eureka:
client:
service-url:
defaultZone: http://127.0.0.1:7001/eureka
instance:
prefer-ip-address: true
management:
endpoint:
gateway:
enabled: true
web:
exposure:
include: true
spring:
cloud:
gateway:
globalcors:# 全局配置
cors-configurations:
'[/**]': # 匹配所有请求
allowedOrigins: "*" #跨域处理 允许所有的域
allowedMethods: # 支持的方法
- GET
- POST
- PUT
- DELETE
最终文件如下:
spring:
cloud:
gateway:
globalcors:
cors-configurations:
'[/**]': # 匹配所有请求
allowedOrigins: "*" #跨域处理 允许所有的域
allowedMethods: # 支持的方法
- GET
- POST
- PUT
- DELETE
application:
name: gateway-web
server:
port: 8001
eureka:
client:
service-url:
defaultZone: http://127.0.0.1:7001/eureka
instance:
prefer-ip-address: true
management:
endpoint:
gateway:
enabled: true
web:
exposure:
include: true
路由过滤器允许以某种方式修改传入的HTTP请求或传出的HTTP响应。 路径过滤器的范围限定为特定路径。 Spring Cloud Gateway包含许多内置的GatewayFilter工厂。如上图,根据请求路径路由到不同微服务去,这块可以使用Gateway的路由过滤功能实现。
过滤器 有 20 多个 实现 类, 包括 头部 过滤器、 路径 类 过滤器、 Hystrix 过滤器 和 变更 请求 URL 的 过滤器, 还有 参数 和 状态 码 等 其他 类型 的 过滤器。
内置的过滤器工厂有22个实现类,包括 头部过滤器、路径过滤器、Hystrix 过滤器 、请求URL 变更过滤器,还有参数和状态码等其他类型的过滤器。根据过滤器工厂的用途来划分,可以分为以下几种:Header(头文件)、Parameter(请求参数)、Path、Body(提交数据)、Status(响应状态)、Session、Redirect、Retry(用户重试次数)、RateLimiter(限流)和Hystrix(熔断)。
比如用户请求cloud.itheima.com的时候,可以将请求路由给http://localhost:18081服务处理,如下配置:
上图配置如下:
routes:
- id: changgou_goods_route#唯一标识
uri: http://localhost:18081#指定要路由的服务
predicates:#路由断言,即路由规则配置
#所有以cloud.itheima.com开头的请求都将被路由到http://localhost:18081
- Host=cloud.itheima.com**#用户请求的域名规则配置
测试请求http://cloud.itheima.com:8001/brand
,效果如下:
注意:此时要想让cloud.itheima.com访问本地计算机,要配置C:\Windows\System32\drivers\etc\hosts
文件,映射配置如下:
127.0.0.1 cloud.itheima.com
我们还可以根据请求路径实现对应的路由过滤操作,例如请求中以/brand/
路径开始的请求,都直接交给http://localhost:180801
服务处理,如下配置:
上图配置如下:
routes:
- id: changgou_goods_route
uri: http://localhost:18081
predicates:
- Path=/brand/**
测试请求http://localhost:8001/brand
,效果如下:
用户每次请求路径的时候,我们可以给真实请求加一个统一前缀,例如用户请求http://localhost:8001
的时候我们让它请求真实地址http://localhost:8001/brand
,如下配置:
上图配置如下:
routes:
- id: changgou_goods_route
uri: http://localhost:18081
predicates:
#- Host=cloud.itheima.com**
- Path=/**
filters:
- PrefixPath=/brand
测试请求http://localhost:8001/
效果如下:
很多时候也会有这么一种请求,用户请求路径是/api/brand
,而真实路径是/brand
,这时候我们需要去掉/api
才是真实路径,此时可以使用SttripPrefix功能来实现路径的过滤操作,如下配置:
上图配置如下:
routes:
- id: changgou_goods_route
uri: http://localhost:18081
predicates:
#- Host=cloud.itheima.com**
- Path=/**
filters:
#- PrefixPath=/brand
#将请求路径中的第一个路径去掉,一个/代表一个路径
- StripPrefix=1
测试请求http://localhost:8001/api/brand
,效果如下:
上面的路由配置每次都会将请求给指定的URL
处理,但如果在以后生产环境,并发量较大的时候,我们需要根据服务的名称判断来做负载均衡操作(每一个微服务都部署了多台,有多个地址),可以使用LoadBalancerClientFilter
来实现负载均衡调用。LoadBalancerClientFilter
会作用在url以lb开头的路由,然后利用loadBalancer
来获取服务实例,构造目标requestUrl
,设置到GATEWAY_REQUEST_URL_ATTR
属性中,供NettyRoutingFilter
使用。
修改application.yml配置文件,代码如下:
上图配置如下:
routes:
- id: changgou_goods_route
#uri: http://localhost:18081
#goods:微服务名称
uri: lb://goods
predicates:
#- Host=cloud.itheima.com**
- Path=/**
filters:
#- PrefixPath=/brand
- StripPrefix=1
测试请求路径http://localhost:8001/api/brand
这样就会访问集群里随机任意的一台机器
网关可以做很多的事情,比如,限流,当我们的系统 被频繁的请求的时候,就有可能 将系统压垮,所以 为了解决这个问题,需要在每一个微服务中做限流操作,但是如果有了网关,那么就可以在网关系统做限流,因为所有的请求都需要先通过网关系统才能路由到微服务中。
令牌桶算法是比较常见的限流算法之一,大概描述如下:
1)所有的请求在处理之前都需要拿到一个可用的令牌才会被处理;
2)根据限流大小,设置按照一定的速率往桶里添加令牌(匀速生成令牌,如每秒生成5个令牌,代表系统的并发数就是5);
3)桶设置最大的放置令牌限制,当桶满时、新添加的令牌就被丢弃或者拒绝;
4)请求达到后首先要获取令牌桶中的令牌,拿着令牌才可以进行其他的业务逻辑,处理完业务逻辑之后,将令牌直接删除;
5)令牌桶有最低限额,当桶中的令牌达到最低限额的时候,请求处理完之后将不会删除令牌,以此保证足够的限流
如下图:
这个算法的实现,有很多技术,Guaua是其中之一,redis客户端也有其实现(本文使用redis做令牌桶)。
spring cloud gateway 默认使用redis的RateLimter限流算法来实现。所以我们要使用首先需要引入redis的依赖
(1)引入redis依赖
在changgou-gateway的pom.xml中引入redis的依赖
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-data-redis-reactiveartifactId>
<version>2.1.3.RELEASEversion>
dependency>
(2)定义KeyResolver
KeyResolver:用户唯一标识,这里使用用户的ip作为唯一表示;
在Applicatioin引导类中添加如下代码,KeyResolver用于计算某一个类型的限流的KEY也就是说,可以通过KeyResolver来指定限流的Key。
我们可以根据IP来限流,比如每个IP每秒钟只能请求一次,在GatewayWebApplication定义key的获取,获取客户端IP,将IP作为key,如下代码:
/***
*启动类里加如下方法
* IP限流
* @return
*/
@Bean(name="ipKeyResolver")
public KeyResolver userKeyResolver() {
return new KeyResolver() {
@Override
public Mono<String> resolve(ServerWebExchange exchange) {
//获取远程客户端IP
String hostName = exchange.getRequest().getRemoteAddress().getAddress().getHostAddress();
System.out.println("hostName:"+hostName);
return Mono.just(hostName);
}
};
}
(3)修改application.yml中配置项,指定限制流量的配置以及REDIS的配置,如图
spring:
cloud:
gateway:
globalcors:
corsConfigurations:
'[/**]': # 匹配所有请求
allowedOrigins: "*" #跨域处理 允许所有的域
allowedMethods: # 支持的方法
- GET
- POST
- PUT
- DELETE
routes:
- id: changgou_goods_route
uri: lb://goods
predicates:
- Path=/api/brand**
filters:
- StripPrefix=1
- name: RequestRateLimiter #局部限流过滤器,请求数限流 名字不能随便写 ,使用默认的facatory
args:
key-resolver: "#{@ipKeyResolver}"# 用户身份唯一标识(与代码里的注释写法一致)
redis-rate-limiter.replenishRate: 1 #每秒只允许一个请求
redis-rate-limiter.burstCapacity: 3 #宽限的请求数量(即实际允许并发4个请求)
application:
name: gateway-web
#Redis配置
redis:
host: 192.168.211.132
port: 6379
server:
port: 8001
eureka:
client:
service-url:
defaultZone: http://127.0.0.1:7001/eureka
instance:
prefer-ip-address: true
management:
endpoint:
gateway:
enabled: true
web:
exposure:
include: true
解释:
redis-rate-limiter.replenishRate
是您希望允许用户每秒执行多少请求,而不会丢弃任何请求。这是令牌桶填充的速率
redis-rate-limiter.burstCapacity
是指令牌桶的容量,允许在一秒钟内完成的最大请求数,将此值设置为零将阻止所有请求。
key-resolver: “#{@ipKeyResolver}” 用于通过SPEL表达式来指定使用哪一个KeyResolver.
如上配置:
表示 一秒内,允许 一个请求通过,令牌桶的填充速率也是一秒钟添加一个令牌。
最大突发状况 也只允许 一秒内有一次请求,可以根据业务来调整 。
项目中有2个重要角色,分别为管理员和用户,在需要登录后操作的系统里,用户如果没登录是没法操作的,所以我们这里需要实现一个登录功能。
changgou_user表如下:
用户信息表tb_user
CREATE TABLE `tb_user` (
`username` varchar(50) NOT NULL COMMENT '用户名',
`password` varchar(100) NOT NULL COMMENT '密码,加密存储',
`phone` varchar(20) DEFAULT NULL COMMENT '注册手机号',
`email` varchar(50) DEFAULT NULL COMMENT '注册邮箱',
`created` datetime NOT NULL COMMENT '创建时间',
`updated` datetime NOT NULL COMMENT '修改时间',
`source_type` varchar(1) DEFAULT NULL COMMENT '会员来源:1:PC,2:H5,3:Android,4:IOS',
`nick_name` varchar(50) DEFAULT NULL COMMENT '昵称',
`name` varchar(50) DEFAULT NULL COMMENT '真实姓名',
`status` varchar(1) DEFAULT NULL COMMENT '使用状态(1正常 0非正常)',
`head_pic` varchar(150) DEFAULT NULL COMMENT '头像地址',
`qq` varchar(20) DEFAULT NULL COMMENT 'QQ号码',
`is_mobile_check` varchar(1) DEFAULT '0' COMMENT '手机是否验证 (0否 1是)',
`is_email_check` varchar(1) DEFAULT '0' COMMENT '邮箱是否检测(0否 1是)',
`sex` varchar(1) DEFAULT '1' COMMENT '性别,1男,0女',
`user_level` int(11) DEFAULT NULL COMMENT '会员等级',
`points` int(11) DEFAULT NULL COMMENT '积分',
`experience_value` int(11) DEFAULT NULL COMMENT '经验值',
`birthday` datetime DEFAULT NULL COMMENT '出生年月日',
`last_login_time` datetime DEFAULT NULL COMMENT '最后登录时间',
PRIMARY KEY (`username`),
UNIQUE KEY `username` (`username`) USING BTREE
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='用户表';
创建工程之前,先使用代码生成器生成对应的业务代码。
(1)公共API创建
在changgou-service-api中创建changgou-service-user-api,并将pojo拷贝到工程中,如下图:
在changgou-service中创建changgou-service-user微服务,并引入生成的业务逻辑代码,如下图:
(2)依赖
在changgou-service-user的pom.xml引入如下依赖:
<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>changgou-serviceartifactId>
<groupId>com.changgougroupId>
<version>1.0-SNAPSHOTversion>
parent>
<modelVersion>4.0.0modelVersion>
<artifactId>changgou-service-userartifactId>
<dependencies>
<dependency>
<groupId>com.changgougroupId>
<artifactId>changgou-service-user-apiartifactId>
<version>1.0-SNAPSHOTversion>
dependency>
dependencies>
project>
(3)启动类创建
在changgou-service-user微服务中创建启动类com.changgou.UserApplication,代码如下:
@SpringBootApplication
@EnableEurekaClient
@MapperScan("com.changgou.user.dao")
public class UserApplication {
public static void main(String[] args) {
SpringApplication.run(UserApplication.class,args);
}
}
(4)application.yml配置
在changgou-service-user的resources中创建application.yml配置,代码如下:
server:
port: 18089
spring:
application:
name: user
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://192.168.211.132:3306/changgou_user?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
username: root
password: 123456
eureka:
client:
service-url:
defaultZone: http://127.0.0.1:7001/eureka
instance:
prefer-ip-address: true
feign:
hystrix:
enabled: true
登录的时候,需要进行密码校验,这里采用了BCryptPasswordEncoder进行加密,需要将BCrypt.java导入到common工程中,其中BCrypt.checkpw(“明文”,“密文”)用于对比密码是否一致。
BCrypt.java加密解密工具类如下
// Copyright (c) 2006 Damien Miller
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
package entity;
import java.io.UnsupportedEncodingException;
import java.security.SecureRandom;
/**
* BCrypt implements OpenBSD-style Blowfish password hashing using
* the scheme described in "A Future-Adaptable Password Scheme" by
* Niels Provos and David Mazieres.
*
* This password hashing system tries to thwart off-line password
* cracking using a computationally-intensive hashing algorithm,
* based on Bruce Schneier's Blowfish cipher. The work factor of
* the algorithm is parameterised, so it can be increased as
* computers get faster.
*
* Usage is really simple. To hash a password for the first time,
* call the hashpw method with a random salt, like this:
*
*
* String pw_hash = BCrypt.hashpw(plain_password, BCrypt.gensalt());
*
*
* To check whether a plaintext password matches one that has been
* hashed previously, use the checkpw method:
*
*
* if (BCrypt.checkpw(candidate_password, stored_hash))
* System.out.println("It matches");
* else
* System.out.println("It does not match");
*
*
* The gensalt() method takes an optional parameter (log_rounds)
* that determines the computational complexity of the hashing:
*
*
* String strong_salt = BCrypt.gensalt(10)
* String stronger_salt = BCrypt.gensalt(12)
*
*
* The amount of work increases exponentially (2**log_rounds), so
* each increment is twice as much work. The default log_rounds is
* 10, and the valid range is 4 to 30.
*
* @version 0.2
*/
public class BCrypt {
// BCrypt parameters
private static final int GENSALT_DEFAULT_LOG2_ROUNDS = 10;
private static final int BCRYPT_SALT_LEN = 16;
// Blowfish parameters
private static final int BLOWFISH_NUM_ROUNDS = 16;
// Initial contents of key schedule
private static final int P_orig[] = {
0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
0x9216d5d9, 0x8979fb1b
};
private static final int S_orig[] = {
0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce,
0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88,
0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88,
0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba,
0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0,
0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7,
0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477,
0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41,
0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a,
0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623,
0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e,
0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff,
0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701,
0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf,
0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e,
0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16,
0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f,
0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4,
0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510,
0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50,
0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8,
0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128,
0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0,
0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3,
0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735,
0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9,
0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7,
0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934,
0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a,
0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42,
0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2,
0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33,
0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3,
0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b,
0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37,
0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804,
0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350,
0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d,
0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f,
0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2,
0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e,
0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52,
0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24,
0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4,
0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0,
0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b,
0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304,
0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9,
0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593,
0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b,
0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c,
0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb,
0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae,
0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5,
0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84,
0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8,
0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38,
0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c,
0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964,
0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8,
0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02,
0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0,
0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e,
0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6
};
// bcrypt IV: "OrpheanBeholderScryDoubt". The C implementation calls
// this "ciphertext", but it is really plaintext or an IV. We keep
// the name to make code comparison easier.
static private final int bf_crypt_ciphertext[] = {
0x4f727068, 0x65616e42, 0x65686f6c,
0x64657253, 0x63727944, 0x6f756274
};
// Table for Base64 encoding
static private final char base64_code[] = {
'.', '/', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V',
'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5',
'6', '7', '8', '9'
};
// Table for Base64 decoding
static private final byte index_64[] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, 0, 1, 54, 55,
56, 57, 58, 59, 60, 61, 62, 63, -1, -1,
-1, -1, -1, -1, -1, 2, 3, 4, 5, 6,
7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
-1, -1, -1, -1, -1, -1, 28, 29, 30,
31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
51, 52, 53, -1, -1, -1, -1, -1
};
// Expanded Blowfish key
private int P[];
private int S[];
/**
* Encode a byte array using bcrypt's slightly-modified base64
* encoding scheme. Note that this is *not* compatible with
* the standard MIME-base64 encoding.
*
* @param d the byte array to encode
* @param len the number of bytes to encode
* @return base64-encoded string
* @exception IllegalArgumentException if the length is invalid
*/
private static String encode_base64(byte d[], int len)
throws IllegalArgumentException {
int off = 0;
StringBuffer rs = new StringBuffer();
int c1, c2;
if (len <= 0 || len > d.length) {
throw new IllegalArgumentException("Invalid len");
}
while (off < len) {
c1 = d[off++] & 0xff;
rs.append(base64_code[(c1 >> 2) & 0x3f]);
c1 = (c1 & 0x03) << 4;
if (off >= len) {
rs.append(base64_code[c1 & 0x3f]);
break;
}
c2 = d[off++] & 0xff;
c1 |= (c2 >> 4) & 0x0f;
rs.append(base64_code[c1 & 0x3f]);
c1 = (c2 & 0x0f) << 2;
if (off >= len) {
rs.append(base64_code[c1 & 0x3f]);
break;
}
c2 = d[off++] & 0xff;
c1 |= (c2 >> 6) & 0x03;
rs.append(base64_code[c1 & 0x3f]);
rs.append(base64_code[c2 & 0x3f]);
}
return rs.toString();
}
/**
* Look up the 3 bits base64-encoded by the specified character,
* range-checking againt conversion table
* @param x the base64-encoded value
* @return the decoded value of x
*/
private static byte char64(char x) {
if ((int)x < 0 || (int)x > index_64.length) {
return -1;
}
return index_64[(int)x];
}
/**
* Decode a string encoded using bcrypt's base64 scheme to a
* byte array. Note that this is *not* compatible with
* the standard MIME-base64 encoding.
* @param s the string to decode
* @param maxolen the maximum number of bytes to decode
* @return an array containing the decoded bytes
* @throws IllegalArgumentException if maxolen is invalid
*/
private static byte[] decode_base64(String s, int maxolen)
throws IllegalArgumentException {
StringBuffer rs = new StringBuffer();
int off = 0, slen = s.length(), olen = 0;
byte ret[];
byte c1, c2, c3, c4, o;
if (maxolen <= 0) {
throw new IllegalArgumentException("Invalid maxolen");
}
while (off < slen - 1 && olen < maxolen) {
c1 = char64(s.charAt(off++));
c2 = char64(s.charAt(off++));
if (c1 == -1 || c2 == -1) {
break;
}
o = (byte)(c1 << 2);
o |= (c2 & 0x30) >> 4;
rs.append((char)o);
if (++olen >= maxolen || off >= slen) {
break;
}
c3 = char64(s.charAt(off++));
if (c3 == -1) {
break;
}
o = (byte)((c2 & 0x0f) << 4);
o |= (c3 & 0x3c) >> 2;
rs.append((char)o);
if (++olen >= maxolen || off >= slen) {
break;
}
c4 = char64(s.charAt(off++));
o = (byte)((c3 & 0x03) << 6);
o |= c4;
rs.append((char)o);
++olen;
}
ret = new byte[olen];
for (off = 0; off < olen; off++) {
ret[off] = (byte) rs.charAt(off);
}
return ret;
}
/**
* Blowfish encipher a single 64-bit block encoded as
* two 32-bit halves
* @param lr an array containing the two 32-bit half blocks
* @param off the position in the array of the blocks
*/
private final void encipher(int lr[], int off) {
int i, n, l = lr[off], r = lr[off + 1];
l ^= P[0];
for (i = 0; i <= BLOWFISH_NUM_ROUNDS - 2;) {
// Feistel substitution on left word
n = S[(l >> 24) & 0xff];
n += S[0x100 | ((l >> 16) & 0xff)];
n ^= S[0x200 | ((l >> 8) & 0xff)];
n += S[0x300 | (l & 0xff)];
r ^= n ^ P[++i];
// Feistel substitution on right word
n = S[(r >> 24) & 0xff];
n += S[0x100 | ((r >> 16) & 0xff)];
n ^= S[0x200 | ((r >> 8) & 0xff)];
n += S[0x300 | (r & 0xff)];
l ^= n ^ P[++i];
}
lr[off] = r ^ P[BLOWFISH_NUM_ROUNDS + 1];
lr[off + 1] = l;
}
/**
* Cycically extract a word of key material
* @param data the string to extract the data from
* @param offp a "pointer" (as a one-entry array) to the
* current offset into data
* @return the next word of material from data
*/
private static int streamtoword(byte data[], int offp[]) {
int i;
int word = 0;
int off = offp[0];
for (i = 0; i < 4; i++) {
word = (word << 8) | (data[off] & 0xff);
off = (off + 1) % data.length;
}
offp[0] = off;
return word;
}
/**
* Initialise the Blowfish key schedule
*/
private void init_key() {
P = (int[])P_orig.clone();
S = (int[])S_orig.clone();
}
/**
* Key the Blowfish cipher
* @param key an array containing the key
*/
private void key(byte key[]) {
int i;
int koffp[] = {
0 };
int lr[] = {
0, 0 };
int plen = P.length, slen = S.length;
for (i = 0; i < plen; i++) {
P[i] = P[i] ^ streamtoword(key, koffp);
}
for (i = 0; i < plen; i += 2) {
encipher(lr, 0);
P[i] = lr[0];
P[i + 1] = lr[1];
}
for (i = 0; i < slen; i += 2) {
encipher(lr, 0);
S[i] = lr[0];
S[i + 1] = lr[1];
}
}
/**
* Perform the "enhanced key schedule" step described by
* Provos and Mazieres in "A Future-Adaptable Password Scheme"
* http://www.openbsd.org/papers/bcrypt-paper.ps
* @param data salt information
* @param key password information
*/
private void ekskey(byte data[], byte key[]) {
int i;
int koffp[] = {
0 }, doffp[] = {
0 };
int lr[] = {
0, 0 };
int plen = P.length, slen = S.length;
for (i = 0; i < plen; i++) {
P[i] = P[i] ^ streamtoword(key, koffp);
}
for (i = 0; i < plen; i += 2) {
lr[0] ^= streamtoword(data, doffp);
lr[1] ^= streamtoword(data, doffp);
encipher(lr, 0);
P[i] = lr[0];
P[i + 1] = lr[1];
}
for (i = 0; i < slen; i += 2) {
lr[0] ^= streamtoword(data, doffp);
lr[1] ^= streamtoword(data, doffp);
encipher(lr, 0);
S[i] = lr[0];
S[i + 1] = lr[1];
}
}
/**
* Perform the central password hashing step in the
* bcrypt scheme
* @param password the password to hash
* @param salt the binary salt to hash with the password
* @param log_rounds the binary logarithm of the number
* of rounds of hashing to apply
* @param cdata the plaintext to encrypt
* @return an array containing the binary hashed password
*/
public byte[] crypt_raw(byte password[], byte salt[], int log_rounds,
int cdata[]) {
int rounds, i, j;
int clen = cdata.length;
byte ret[];
if (log_rounds < 4 || log_rounds > 30) {
throw new IllegalArgumentException("Bad number of rounds");
}
rounds = 1 << log_rounds;
if (salt.length != BCRYPT_SALT_LEN) {
throw new IllegalArgumentException("Bad salt length");
}
init_key();
ekskey(salt, password);
for (i = 0; i != rounds; i++) {
key(password);
key(salt);
}
for (i = 0; i < 64; i++) {
for (j = 0; j < (clen >> 1); j++) {
encipher(cdata, j << 1);
}
}
ret = new byte[clen * 4];
for (i = 0, j = 0; i < clen; i++) {
ret[j++] = (byte)((cdata[i] >> 24) & 0xff);
ret[j++] = (byte)((cdata[i] >> 16) & 0xff);
ret[j++] = (byte)((cdata[i] >> 8) & 0xff);
ret[j++] = (byte)(cdata[i] & 0xff);
}
return ret;
}
/**
* Hash a password using the OpenBSD bcrypt scheme
* @param password the password to hash
* @param salt the salt to hash with (perhaps generated
* using BCrypt.gensalt)
* @return the hashed password
*/
public static String hashpw(String password, String salt) {
BCrypt B;
String real_salt;
byte passwordb[], saltb[], hashed[];
char minor = (char)0;
int rounds, off = 0;
StringBuffer rs = new StringBuffer();
if (salt.charAt(0) != '$' || salt.charAt(1) != '2') {
throw new IllegalArgumentException("Invalid salt version");
}
if (salt.charAt(2) == '$') {
off = 3;
} else {
minor = salt.charAt(2);
if (minor != 'a' || salt.charAt(3) != '$') {
throw new IllegalArgumentException("Invalid salt revision");
}
off = 4;
}
// Extract number of rounds
if (salt.charAt(off + 2) > '$') {
throw new IllegalArgumentException("Missing salt rounds");
}
rounds = Integer.parseInt(salt.substring(off, off + 2));
real_salt = salt.substring(off + 3, off + 25);
try {
passwordb = (password + (minor >= 'a' ? "\000" : "")).getBytes("UTF-8");
} catch (UnsupportedEncodingException uee) {
throw new AssertionError("UTF-8 is not supported");
}
saltb = decode_base64(real_salt, BCRYPT_SALT_LEN);
B = new BCrypt();
hashed = B.crypt_raw(passwordb, saltb, rounds,
(int[])bf_crypt_ciphertext.clone());
rs.append("$2");
if (minor >= 'a') {
rs.append(minor);
}
rs.append("$");
if (rounds < 10) {
rs.append("0");
}
if (rounds > 30) {
throw new IllegalArgumentException(
"rounds exceeds maximum (30)");
}
rs.append(Integer.toString(rounds));
rs.append("$");
rs.append(encode_base64(saltb, saltb.length));
rs.append(encode_base64(hashed,
bf_crypt_ciphertext.length * 4 - 1));
return rs.toString();
}
/**
* Generate a salt for use with the BCrypt.hashpw() method
* @param log_rounds the log2 of the number of rounds of
* hashing to apply - the work factor therefore increases as
* 2**log_rounds.
* @param random an instance of SecureRandom to use
* @return an encoded salt value
*/
public static String gensalt(int log_rounds, SecureRandom random) {
StringBuffer rs = new StringBuffer();
byte rnd[] = new byte[BCRYPT_SALT_LEN];
random.nextBytes(rnd);
rs.append("$2a$");
if (log_rounds < 10) {
rs.append("0");
}
if (log_rounds > 30) {
throw new IllegalArgumentException(
"log_rounds exceeds maximum (30)");
}
rs.append(Integer.toString(log_rounds));
rs.append("$");
rs.append(encode_base64(rnd, rnd.length));
return rs.toString();
}
/**
* Generate a salt for use with the BCrypt.hashpw() method
* @param log_rounds the log2 of the number of rounds of
* hashing to apply - the work factor therefore increases as
* 2**log_rounds.
* @return an encoded salt value
*/
public static String gensalt(int log_rounds) {
return gensalt(log_rounds, new SecureRandom());
}
/**
* Generate a salt for use with the BCrypt.hashpw() method,
* selecting a reasonable default for the number of hashing
* rounds to apply
* @return an encoded salt value
*/
public static String gensalt() {
return gensalt(GENSALT_DEFAULT_LOG2_ROUNDS);
}
/**
* Check that a plaintext password matches a previously hashed
* one
* @param plaintext the plaintext password to verify
* @param hashed the previously-hashed password
* @return true if the passwords match, false otherwise
*/
public static boolean checkpw(String plaintext, String hashed) {
byte hashed_bytes[];
byte try_bytes[];
try {
String try_pw = hashpw(plaintext, hashed);
hashed_bytes = hashed.getBytes("UTF-8");
try_bytes = try_pw.getBytes("UTF-8");
} catch (UnsupportedEncodingException uee) {
return false;
}
if (hashed_bytes.length != try_bytes.length) {
return false;
}
byte ret = 0;
for (int i = 0; i < try_bytes.length; i++) {
ret |= hashed_bytes[i] ^ try_bytes[i];
}
return ret == 0;
}
}
修改changgou-service-user的com.changgou.user.controller.UserController添加登录方法,代码如下:
/***
* 用户登录
*/
@RequestMapping(value = "/login")
public Result login(String username,String password){
//去数据库查询用户信息(用户名是主键)
User user = userService.findById(username);
if(user!=null && BCrypt.checkpw(password,user.getPassword())){
return new Result(true,StatusCode.OK,"登录成功!",user);
}
return new Result(false,StatusCode.LOGINERROR,"账号或者密码错误!");
}
注意:这里密码进行了加密。
在我们平时工作中,并不会直接将微服务暴露出去,一般都会使用网关对接,实现对微服务的一个保护作用,如上图,当用户访问/api/user/
的时候我们再根据用户请求调用用户微服务的指定方法。当然,除了/api/user/
还有/api/address/
、/api/areas/
、/api/cities/
、/api/provinces/
都需要由user微服务处理,修改网关工程changgou-gateway-web
的application.yml配置文件,如下代码:
spring:
cloud:
gateway:
globalcors:
corsConfigurations:
'[/**]': # 匹配所有请求
allowedOrigins: "*" #跨域处理 允许所有的域
allowedMethods: # 支持的方法
- GET
- POST
- PUT
- DELETE
routes:
- id: changgou_goods_route
uri: lb://goods
predicates:
- Path=/api/goods/**
filters:
- StripPrefix=1
- name: RequestRateLimiter #请求数限流 名字不能随便写 ,使用默认的facatory
args:
key-resolver: "#{@ipKeyResolver}"
redis-rate-limiter.replenishRate: 1
redis-rate-limiter.burstCapacity: 1
#用户微服务
- id: changgou_user_route
uri: lb://user
predicates:
- Path=/api/user/**,/api/address/**,/api/areas/**,/api/cities/**,/api/provinces/**
filters:
- StripPrefix=1
application:
name: gateway-web
#Redis配置
redis:
host: 192.168.211.132
port: 6379
server:
port: 8001
eureka:
client:
service-url:
defaultZone: http://127.0.0.1:7001/eureka
instance:
prefer-ip-address: true
management:
endpoint:
gateway:
enabled: true
web:
exposure:
include: true
使用Postman访问http://localhost:8001/api/user/login?username=changgou&password=changgou
,效果如下:
我们之前已经搭建过了网关,使用网关在网关系统中比较适合进行权限校验。
用户登录user微服务后,登录成功后,user微服务将用户信息使用token令牌加密后返回给浏览器,下次浏览器访问任何一个微服务的时候,都会经过网关,网关可以对加密后的用户信息进行令牌校验
我们可以采用JWT的方式来实现鉴权校验。
JSON Web Token(JWT)是一个非常轻巧的规范。这个规范允许我们使用JWT在用户和服务器之间传递安全可靠的信息。
一个JWT实际上就是一个字符串,它由三部分组成,头部、载荷与签名。
头部(Header)
头部用于描述关于该JWT的最基本的信息,例如其类型以及签名所用的算法等。这也可以被表示成一个JSON对象。
{
"typ":"JWT","alg":"HS256"}
type:当前令牌的类型;alg:在头部指明了签名算法是HS256算法。 我们进行BASE64编码http://base64.xpcha.com/,编码后的字符串如下:
eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9
小知识:Base64是一种基于64个可打印字符来表示二进制数据的表示方法。由于2的6次方等于64,所以每6个比特为一个单元,对应某个可打印字符。三个字节有24个比特,对应于4个Base64单元,即3个字节需要用4个可打印字符来表示。JDK 中提供了非常方便的 BASE64Encoder 和 BASE64Decoder,用它们可以非常方便的完成基于 BASE64 的编码和解码
Base加密解密
加密:
载荷(playload)
载荷就是存放有效信息的地方。这个名字像是特指飞机上承载的货品,这些有效信息包含三个部分
(1)标准中注册的声明(建议但不强制使用)
iss: jwt签发者(令牌的生产者)
sub: jwt所面向的用户(当前令牌的描述说明)
aud: 接收jwt的一方
exp: jwt的过期时间,这个过期时间必须要大于签发时间
nbf: 定义在什么时间之前,该jwt都是不可用的.
iat: jwt的签发时间
jti: jwt的唯一身份标识,主要用来作为一次性token,从而回避重放攻击。
(2)公共的声明
公共的声明可以添加任何的信息,一般添加用户的相关信息或其他业务需要的必要信息.但不建议添加敏感信息,因为该部分在客户端可解密.
(3)私有的声明
私有声明是提供者和消费者所共同定义的声明,一般不建议存放敏感信息,因为base64是对称解密的,意味着该部分信息可以归类为明文信息。
这个指的就是自定义的claim。比如下面面结构举例中的admin和name都属于自定的claim。这些claim跟JWT标准规定的claim区别在于:JWT规定的claim,JWT的接收方在拿到JWT之后,都知道怎么对这些标准的claim进行验证(还不知道是否能够验证);而private claims不会验证,除非明确告诉接收方要对这些claim进行验证以及规则才行。
定义一个payload:
{
"sub":"1234567890","name":"John Doe","admin":true}
然后将其进行base64加密,得到Jwt的第二部分。
eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWV9
载荷总结:
注意,网关去校验令牌是否有效的时候,公共的声明和私有的声明不参与校验;
签证/签名(signature)
jwt的第三部分是一个签证信息(校验数据是否被篡改),这个签证信息由三部分组成:
header (base64加密后的)
payload (base64加密后的)
secret(秘钥:盐)
这个部分需要base64加密后的header和base64加密后的payload使用.连接组成的字符串,然后通过header中声明的加密方式进行加盐secret组合加密,然后就构成了jwt的第三部分。
TJVA95OrM7E2cBab30RMHrHDcEfxjoYZgeFONFh7HgQ
将这三部分用.连接成一个完整的字符串,构成了最终的jwt:
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWV9.TJVA95OrM7E2cBab30RMHrHDcEfxjoYZgeFONFh7HgQ
注意:secret是保存在服务器端的,jwt的签发生成也是在服务器端的,secret就是用来进行jwt的签发和jwt的验证,所以,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。
网关对令牌进行校验的原理
首先,网关是已经有秘钥的,然后用户将令牌的三大部分(头部、载荷、秘钥)传过来后,网关对这三大部分进行HS256算法加密,得到加密后的密文,将这个密文与已经有的秘钥进行对比,一致的话就放行,不一致则过滤掉;
JJWT(javaJWT:生成令牌)是一个提供端到端的JWT创建和验证的Java库。永远免费和开源(Apache License,版本2.0),JJWT很容易使用和理解。它被设计成一个以建筑为中心的流畅界面,隐藏了它的大部分复杂性。
官方文档:
https://github.com/jwtk/jjwt
(1)依赖引入
在changgou-parent项目中的pom.xml中添加依赖:
<dependency>
<groupId>io.jsonwebtokengroupId>
<artifactId>jjwtartifactId>
<version>0.9.0version>
dependency>
(2)创建测试
在changgou-common的/test/java下创建测试类,并设置测试方法
public class JwtTest {
/****
* 创建Jwt令牌
*/
@Test
public void testCreateJwt(){
JwtBuilder builder= Jwts.builder()
.setId("888") //设置唯一编号
.setSubject("啦啦啦") //设置主题 可以是JSON数据
.setIssuedAt(new Date()) //设置签发日期
//参数1:签名算法,参数2:秘钥(盐)
.signWith(SignatureAlgorithm.HS256,"maltose");//设置签名 使用HS256算法,并设置SecretKey(字符串)
//获取密文 并返回一个字符串
System.out.println( builder.compact() );
}
}
运行打印结果:
eyJhbGciOiJIUzI1NiJ9.eyJqdGkiOiI4ODgiLCJzdWIiOiLlsI_nmb0iLCJpYXQiOjE1NjIwNjIyODd9.RBLpZ79USMplQyfJCZFD2muHV_KLks7M1ZsjTu6Aez4
再次运行,会发现每次运行的结果是不一样的,因为我们的载荷中包含了时间。
我们刚才已经创建了token ,在web应用中这个操作是由服务端进行然后发给客户端,客户端在下次向服务端发送请求时需要携带这个token(这就好像是拿着一张门票一样),那服务端接到这个token 应该解析出token中的信息(例如用户id),根据这些信息查询数据库返回相应的结果。
/***
* 解析Jwt令牌数据
*/
@Test
public void testParseJwt(){
String compactJwt="eyJhbGciOiJIUzI1NiJ9.eyJqdGkiOiI4ODgiLCJzdWIiOiLlsI_nmb0iLCJpYXQiOjE1NjIwNjIyODd9.RBLpZ79USMplQyfJCZFD2muHV_KLks7M1ZsjTu6Aez4";
Claims claims = Jwts.parser().
setSigningKey("maltose").//秘钥(盐)
parseClaimsJws(compactJwt).
getBody();
System.out.println(claims);
}
运行打印效果:
{jti=888, sub=小白, iat=1562062287}
试着将token或签名秘钥篡改一下,会发现运行时就会报错,所以解析token也就是验证token.
有很多时候,我们并不希望签发的token是永久生效的,所以我们可以为token添加一个过期时间。
.setExpiration(date)//用于设置过期时间 ,参数为Date类型数据
运行,打印效果如下:
eyJhbGciOiJIUzI1NiJ9.eyJqdGkiOiI4ODgiLCJzdWIiOiLlsI_nmb0iLCJpYXQiOjE1NjIwNjI5MjUsImV4cCI6MTU2MjA2MjkyNX0._vs4METaPkCza52LuN0-2NGGWIIO7v51xt40DHY1U1Q
/***
* 解析Jwt令牌数据
*/
@Test
public void testParseJwt(){
String compactJwt="eyJhbGciOiJIUzI1NiJ9.eyJqdGkiOiI4ODgiLCJzdWIiOiLlsI_nmb0iLCJpYXQiOjE1NjIwNjI5MjUsImV4cCI6MTU2MjA2MjkyNX0._vs4METaPkCza52LuN0-2NGGWIIO7v51xt40DHY1U1Q";
Claims claims = Jwts.parser().
setSigningKey("itcast").
parseClaimsJws(compactJwt).
getBody();
System.out.println(claims);
}
自定义载荷信息
我们刚才的例子只是存储了id和subject两个信息,如果你想存储更多的信息(例如角色)可以定义自定义claims。
创建测试类,并设置测试方法:
创建token:
@Test
public void createJwt(){
long currentTimeMillis = System.currentTimeMillis();
long l = currentTimeMillis + 20000;
//
//创建jwtbuilder
JwtBuilder builder = Jwts.builder();
//1.头(不设置,默认) 2 载荷(数据) 3. 签名
builder.setId("唯一的标识")
.setIssuer("颁发者")//生成令牌的一方
.setSubject("主题")//就是描述 jwt的信息
.setExpiration(new Date(l))//设置过期时间
.signWith(SignatureAlgorithm.HS256,"maltose");//设置签名
//3.可以自定义载荷
Map<String, Object> map = new HashMap<>();
map.put("myaddress","cn");
map.put("mycity","sz");
builder.addClaims(map);
//生成令牌
String compact = builder.compact();
System.out.println(compact);
}
1.用户通过访问微服务网关调用微服务,同时携带头文件信息
2.在微服务网关这里进行拦截,拦截后获取用户要访问的路径
3.识别用户访问的路径是否需要登录,如果需要,识别用户的身份是否能访问该路径[这里可以基于数据库设计一套权限]
4.如果需要权限访问,用户已经登录,则放行
5.如果需要权限访问,且用户未登录,则提示用户需要登录
6.用户通过网关访问用户微服务,进行登录验证
7.验证通过后,用户微服务会颁发一个令牌给网关,网关会将用户信息封装到头文件中,并响应用户
8.用户下次访问,携带头文件中的令牌信息即可识别是否登录
(1)生成令牌工具类
在changgou-common中创建类entity.JwtUtil,主要辅助生成Jwt令牌信息,代码如下:
public class JwtUtil {
//默认有效期为
public static final Long JWT_TTL = 3600000L;// 60 * 60 *1000 一个小时
//Jwt令牌信息
public static final String JWT_KEY = "itcast";
/**
*创建令牌
*id:唯一表示
*subject:主题
*ttlMillis:有效期 传null的话,默认1小时
**/
public static String createJWT(String id, String subject, Long ttlMillis) {
//指定算法
SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256;
//当前系统时间
long nowMillis = System.currentTimeMillis();
//令牌签发时间
Date now = new Date(nowMillis);
//如果令牌有效期为null,则默认设置有效期1小时
if(ttlMillis==null){
ttlMillis=JwtUtil.JWT_TTL;
}
//令牌过期时间设置
long expMillis = nowMillis + ttlMillis;
Date expDate = new Date(expMillis);
//生成秘钥
SecretKey secretKey = generalKey();
//封装Jwt令牌信息
JwtBuilder builder = Jwts.builder()
.setId(id) //唯一的ID
.setSubject(subject) // 主题 可以是JSON数据
.setIssuer("admin") // 签发者
.setIssuedAt(now) // 签发时间
.signWith(signatureAlgorithm, secretKey) // 签名算法以及密匙
.setExpiration(expDate); // 设置过期时间
return builder.compact();
}
/**
* 生成加密 secretKey
* @return
*/
public static SecretKey generalKey() {
byte[] encodedKey = Base64.getEncoder().encode(JwtUtil.JWT_KEY.getBytes());
SecretKey key = new SecretKeySpec(encodedKey, 0, encodedKey.length, "AES");
return key;
}
/**
* 解析令牌数据
* @param jwt
* @return
* @throws Exception
*/
public static Claims parseJWT(String jwt) throws Exception {
SecretKey secretKey = generalKey();
return Jwts.parser()
.setSigningKey(secretKey)
.parseClaimsJws(jwt)
.getBody();
}
}
(2) 用户登录成功 则 签发TOKEN,修改登录的方法:
代码如下:
/***
* 用户登录
*/
@RequestMapping(value = "/login")
public Result login(String username,String password){
//查询用户信息
User user = userService.findById(username);
if(user!=null && BCrypt.checkpw(password,user.getPassword())){
//设置令牌信息
Map<String,Object> info = new HashMap<String,Object>();
info.put("role","USER");
info.put("success","SUCCESS");
info.put("username",username);
//生成令牌
String jwt = JwtUtil.createJWT(UUID.randomUUID().toString(), JSON.toJSONString(info),null);
return new Result(true,StatusCode.OK,"登录成功!",jwt);
}
return new Result(false,StatusCode.LOGINERROR,"账号或者密码错误!");
}
拷贝JwtUtil到changgou-gateway-web中
创建 过滤器类,如图所示:
AuthorizeFilter代码如下:
//实现用户权限校验
@Component
public class AuthorizeFilter implements GlobalFilter, Ordered {
//令牌头名字(可能存在头文件里,或cookie里,或请求体里 )
private static final String AUTHORIZE_TOKEN = "Authorization";
/***
* 全局过滤器
* @param exchange
* @param chain
* @return
*/
@Override
public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
//获取Request、Response对象
ServerHttpRequest request = exchange.getRequest();
ServerHttpResponse response = exchange.getResponse();
//获取请求的URI
String path = request.getURI().getPath();
//如果是登录、goods等开放的微服务[这里的goods部分开放],则直接放行,这里不做完整演示,完整演示需要设计一套权限系统
if (path.startsWith("/api/user/login") || path.startsWith("/api/brand/search/")) {
//放行
Mono<Void> filter = chain.filter(exchange);
return filter;
}
//获取头文件中的令牌信息
String tokent = request.getHeaders().getFirst(AUTHORIZE_TOKEN);
//如果头文件中没有令牌信息,则从请求参数中获取
if (StringUtils.isEmpty(tokent)) {
tokent = request.getQueryParams().getFirst(AUTHORIZE_TOKEN);
}
//如果请求参数中没有令牌信息,则从cookie中获取
if (StringUtils.isEmpty(tokent)) {
HttpCookie httpCookie= request.getCookies().getFirst(AUTHORIZE_TOKEN);
if(httpCookie!=null){
tokent =httpCookie.getValue();
}
}
//如果令牌为空,则输出错误代码
if (StringUtils.isEmpty(tokent)) {
//设置方法不允许被访问,405错误代码
response.setStatusCode(HttpStatus.METHOD_NOT_ALLOWED);
return response.setComplete();
}
//解析令牌数据
try {
Claims claims = JwtUtil.parseJWT(tokent);
} catch (Exception e) {
e.printStackTrace();
//解析失败,响应401错误
response.setStatusCode(HttpStatus.UNAUTHORIZED);
return response.setComplete();
}
//放行
return chain.filter(exchange);
}
/***
* 过滤器执行顺序(越小越先执行)
* @return
*/
@Override
public int getOrder() {
return 0;
}
}
spring:
cloud:
gateway:
globalcors:
corsConfigurations:
'[/**]': # 匹配所有请求
allowedOrigins: "*" #跨域处理 允许所有的域
allowedMethods: # 支持的方法
- GET
- POST
- PUT
- DELETE
routes:
- id: changgou_goods_route
uri: lb://goods
predicates:
- Path=/api/album/**,/api/brand/**,/api/cache/**,/api/categoryBrand/**,/api/category/**,/api/para/**,/api/pref/**,/api/sku/**,/api/spec/**,/api/spu/**,/api/stockBack/**,/api/template/**
filters:
- StripPrefix=1
- name: RequestRateLimiter #请求数限流 名字不能随便写 ,使用默认的facatory
args:
key-resolver: "#{@ipKeyResolver}"
redis-rate-limiter.replenishRate: 1
redis-rate-limiter.burstCapacity: 1
#用户微服务
- id: changgou_user_route
uri: lb://user
predicates:
- Path=/api/user/**,/api/address/**,/api/areas/**,/api/cities/**,/api/provinces/**
filters:
- StripPrefix=1
application:
name: gateway-web
#Redis配置
redis:
host: 192.168.211.132
port: 6379
server:
port: 8001
eureka:
client:
service-url:
defaultZone: http://127.0.0.1:7001/eureka
instance:
prefer-ip-address: true
management:
endpoint:
gateway:
enabled: true
web:
exposure:
include: true
测试访问http://localhost:8001/api/user/login?username=changgou&password=changgou
,效果如下:
测试访问http://localhost:8001/api/user
,效果如下:
参考官方手册:
https://cloud.spring.io/spring-cloud-gateway/spring-cloud-gateway.html#_stripprefix_gatewayfilter_factory
用户每次请求的时候,我们都需要获取令牌数据,方法有多重,可以在每次提交的时候,将数据提交到头文件中,也可以将数据存储到Cookie中,每次从Cookie中校验数据,还可以每次将令牌数据以参数的方式提交到网关,这里面采用Cookie的方式比较容易实现。
修改user微服务,每次登录的时候,添加令牌信息到Cookie中,修改changgou-service-user的com.changgou.user.controller.UserController
的login
方法,代码如下:
每次在网关中通过过滤器获取Cookie中的令牌,然后对令牌数据进行解析,修改微服务网关changgou-gateway-web中的AuthorizeFilter,代码如下:
登录后测试,可以识别用户身份,不登录无法识别。如下访问http://localhost:8001/api/user
会携带令牌数据:
我们还可以在Gateway的全局过滤器中添加请求头信息,例如可以将令牌信息添加到请求头中,在微服务中获取头信息,如下代码:
修改微服务网关中的AuthorizeFilter过滤器,在令牌信息校验那块将令牌加入到请求头中,如下代码:
在changgou-service-user微服务的UserController的findAll方法中获取请求头测试,代码如下:
后台输出令牌数据如下: