zuul网关
zuul网关
Zuul 路由配置
我们新建一个module microservice-zuul-3001
这里我们的zuul也注册到eureka服务里,端口3001;
我们修改下Hosts,专门为zuul搞个本地域名映射
hosts文件 加下:
然后pom.xml要加上:
<!--zuul网关-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zuul</artifactId>
</dependency>
完整的pom
<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.lqx</groupId>
<artifactId>springcloudlqx</artifactId>
<version>1.0-SNAPSHOT</version>
</parent>
<artifactId>microservice-zuul-3001</artifactId>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>com.lqx</groupId>
<artifactId>microservice-common</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<!-- actuator监控 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<!-- hystrix容错 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-hystrix</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<!--zuul网关-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zuul</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
yml文件配置
server:
port: 3001
context-path: /
spring:
application:
name: microservice-zuul
eureka:
instance:
instance-id: microservice-zuul:3001
prefer-ip-address: true
client:
service-url:
defaultZone: http://eureka2001.lqx.com:2001/eureka/,http://eureka2002.lqx.com:2002/eureka/,http://eureka2003.lqx.com:2003/eureka/
info:
groupId: com.lqx.testSpringcloud
artifactId: microservice-zuul-3001
version: 1.0-SNAPSHOT
userName: http://lqx.com
phone: 123456
启动类注解
package com.lqx.microservicezuul3001;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
@SpringBootApplication(exclude={DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class})
@EnableZuulProxy
public class MicroserviceZuul3001Application {
public static void main(String[] args) {
SpringApplication.run(MicroserviceZuul3001Application.class, args);
}
}
启动三个eureka 然后再启动下一个1001服务,以及 zuul网关服务;
这里有两个服务;
我们直接请求:http://localhost:1001/student/list 能获取到数据;
我们用 http://zuul.javaxl.com:3001/microservice-student/student/list 域名+端口+服务名称+请求地址 也能请求到数据;
说明我们的路由基本配置OK
说明我们的路由基本配置OK
Zuul路由映射配置
上面是zuul的简单使用,从接口地址很轻易的就暴露了服务提供者的唯一标识名microservice-student;有安全风险,我们需要将其隐藏;
ignored-services的作用是将原来的服务提供者唯一标识名禁用;
Prefix的作用是给服务加前缀
yml文件中添加以下配置:
zuul:
routes:
studentServer.serviceId: microservice-student
studentServer.path: /studentServer/**
ignored-services: "*"
prefix: /lqx
配置完毕后可通过以下链接做测试
http://zuul.javaxl.com:3001/microservice-student/student/list
http://zuul.javaxl.com:3001/studentServer/student/list
http://zuul.javaxl.com:3001/javaxl/microservice-student/student/list
http://zuul.javaxl.com:3001/javaxl/studentServer/student/list
对应的配置会出现上面的错误页面,这是正常现象。
Zuul请求过滤配置
比如我们登录某个系统 需要身份验证,用户名密码啥的;
我们请求服务,也可以来设置身份验证,也就是过滤非法请求;Zuul通过ZuulFilter过滤器实现;
一般具体实现的话 每次经过Zuul服务网关 我们都对带来的token进行有效性验证;
我们先定义一个 AccessFilter类:
package com.lqx.microservicezuul3001.filter;
import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;
import com.netflix.zuul.exception.ZuulException;
import org.apache.log4j.Logger;
import javax.servlet.http.HttpServletRequest;
/**
* @author 小李飞刀
* @site www.javaxl.com
* @company
* @create 2019-04-30 16:05
*/
public class AccessFilter extends ZuulFilter {
Logger logger=Logger.getLogger(AccessFilter.class);
/**
* 判断该过滤器是否要被执行
*/
@Override
public boolean shouldFilter() {
return true;
}
/**
* 过滤器的具体执行逻辑
*/
@Override
public Object run() throws ZuulException {
RequestContext ctx = RequestContext.getCurrentContext();
HttpServletRequest request = ctx.getRequest();
String parameter = request.getParameter("accessToken");
logger.info(request.getRequestURL().toString()+" 请求访问");
if(parameter==null){
logger.error("accessToken为空!");
ctx.setSendZuulResponse(false);
ctx.setResponseStatusCode(401);
ctx.setResponseBody("{\"result\":\"accessToken is empty!\"}");
return null;
}
// token判断逻辑
logger.info(request.getRequestURL().toString()+" 请求成功");
return null;
}
/**
* 过滤器的类型 这里用pre,代表会再请求被路由之前执行
*/
@Override
public String filterType() {
return "pre";
}
/**
* 过滤器的执行顺序
*/
@Override
public int filterOrder() {
return 0;
}
}
config
@Configuration
public class ZuulConfig {
@Bean
public AccessFilter accessFilter(){
return new AccessFilter();
}
}
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