微服务网关Zuul路由ZuulFilter过滤
一、需求该过滤的条件是,只有请求参数携带有user的请求才可访问端口号为/abc8080工程,否则返回401,未授权。只有当访问/abc8080且user为空时是通不过过滤的,其它请求都可以。二、基本环境搭建一个eureka一个网关zuul三、创建项目eureka(1)创建项目,命名00-eurekaserver-8000(2)依赖<?xml versio...
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一、需求
该过滤的条件是,只有请求参数携带有user的请求才可访问端口号为/abc8080工程,否则返回401,未授权。只有当访问/abc8080且user为空时是通不过过滤的,其它请求都可以。
二、基本环境搭建
- 一个eureka
- 一个网关zuul
三、创建项目eureka
(1)创建项目,命名00-eurekaserver-8000
(2)依赖
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.abc</groupId>
<artifactId>00-eurekaserver-8000</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.7.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR2</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
(3)application.yml配置
server:
port: 8000
eureka:
instance:
hostname: localhost # 指定Eureka主机
client:
register-with-eureka: false # 指定当前主机是否向Eureka服务器进行注册
fetch-registry: false # 指定当前主机是否要从Eurka服务器下载服务注册列表
service-url: # 服务暴露地址
defaultZone: http://localhost:8000/eureka
# defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka
# server:
# enable-self-preservation: false # 关闭自我保护
(4)启动类
package com.abc.eureka;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
@SpringBootApplication
@EnableEurekaServer // 开启Eureka服务
public class EurekaServerApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaServerApplication.class, args);
}
}
四、创建项目网关zuul
(1)创建项目,命名00-zuul-filter-9000
(2)依赖
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.abc</groupId>
<artifactId>00-zuul-filter-9000</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.7.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR1</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<!--zuul依赖-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-zuul</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
(3)application.yml配置
server:
port: 9000
eureka:
client:
service-url:
defaultZone: http://localhost:8000/eureka
spring:
application:
name: abcmsc-zuul-depart
zuul:
routes:
# 指定微服务的路由规则
abcmsc-consumer-depart-8080: /abc8080/**
abcmsc-consumer-depart-8090: /abc8090/**
abcmsc-consumer-depart: /abc012/**
(4)ZuulFilter类
package com.abc.zuul.filter;
import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;
import com.netflix.zuul.exception.ZuulException;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpStatus;
import org.springframework.cloud.netflix.zuul.filters.support.FilterConstants;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import javax.servlet.http.HttpServletRequest;
@Component
@Slf4j
public class RouteFilter extends ZuulFilter {
@Override
public String filterType() {
// 在路由之前进行过滤
return FilterConstants.PRE_TYPE;
}
@Override
public int filterOrder() {
return -5;
}
// 过滤通过后要执行的方法
@Override
public Object run() throws ZuulException {
log.info("通过过滤");
return null;
}
// 过滤的核心逻辑
@Override
public boolean shouldFilter() {
// 获取请求上下文
RequestContext context = RequestContext.getCurrentContext();
// 获取到request
HttpServletRequest request = context.getRequest();
String user = request.getParameter("user");
String uri = request.getRequestURI();
// 若请求中包含/abc8080路径,且没有user请求参数,则无法通过过滤
if(uri.contains("/abc8080") && StringUtils.isEmpty(user)) {
log.warn("user用户为空");
// 指定当前请求未通过zuul过滤,默认值为true
context.setSendZuulResponse(false);
context.setResponseStatusCode(HttpStatus.SC_UNAUTHORIZED);
return false;
}
return true;
}
}
(5)启动类
package com.abc.zuul;
import com.abc.zuul.filter.RouteFilter;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
import org.springframework.context.annotation.Bean;
@EnableZuulProxy // 开启zuul代理模式
@SpringBootApplication
public class ZuulApplication {
public static void main(String[] args) {
SpringApplication.run(ZuulApplication.class, args);
}
}
五、测试
(1)启动eureka
(2)启动zuul
(3)效果
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