SpringCloud - Zuul（一）

使用步骤

1、引入依赖 spring-cloud-starter-netflix-zuul

2、使用注解 @EnableZuulProxy

3、配置 yml

4、测试：访问zuul所在的IP:端口号 + 你需要的服务名 + 你需要的路由地址来实现

api-gateway

<?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.imooc</groupId>
	<artifactId>api-gateway</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>api-gateway</name>
	<description>Demo project for Spring Boot</description>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.0.M3</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
		<spring-cloud.version>Finchley.M2</spring-cloud.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-config</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-zuul</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>

	<repositories>
		<repository>
			<id>spring-snapshots</id>
			<name>Spring Snapshots</name>
			<url>https://repo.spring.io/snapshot</url>
			<snapshots>
				<enabled>true</enabled>
			</snapshots>
		</repository>
		<repository>
			<id>spring-milestones</id>
			<name>Spring Milestones</name>
			<url>https://repo.spring.io/milestone</url>
			<snapshots>
				<enabled>false</enabled>
			</snapshots>
		</repository>
	</repositories>

	<pluginRepositories>
		<pluginRepository>
			<id>spring-snapshots</id>
			<name>Spring Snapshots</name>
			<url>https://repo.spring.io/snapshot</url>
			<snapshots>
				<enabled>true</enabled>
			</snapshots>
		</pluginRepository>
		<pluginRepository>
			<id>spring-milestones</id>
			<name>Spring Milestones</name>
			<url>https://repo.spring.io/milestone</url>
			<snapshots>
				<enabled>false</enabled>
			</snapshots>
		</pluginRepository>
	</pluginRepositories>

</project>

# bootstrap.yml

spring:
  application:
    name: api-gateway
  cloud:
    config:
      discovery:
        enabled: true
        service-id: CONFIG
      profile: dev
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8761/eureka/
zuul:
  routes:
  # 自定义路由地址
  # /myProduct/product/list -> /product/product/list
    aaaaaa:
      path: /myProduct/**
      serviceId: product
      # sensitiveHeaders是敏感头的配置，如果需要传递敏感信息如cookie，将其设置为空。默认是过滤掉 cookie，解除过滤 cookie
      sensitiveHeaders:
  # 简洁写法
#    product: /myProduct/**
  # 排除某些路由（路由禁用配置套路，支持通配符）
  ignored-patterns:
    - /**/product/listForOrder
management:
  security:
    enabled: false

• 查看所有路由规则，首先需要配置：management.security.enabled: false（查看路由权限打开）
  
• 较新版本的配置：
  # 新版本中management.security.enabled配置已经过时，改用下面的配置
  # 放开请求路径，这样才能在启动日志里面看到隐藏的请求 management.endpoints.web.exposure.include=*
  # 新版本查看routes规则，不再是application/routes 而是/actuator/routes

package com.imooc.apigateway;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.cloud.netflix.zuul.filters.ZuulProperties;
import org.springframework.stereotype.Component;

@Component
public class ZuulConfig {

   @ConfigurationProperties("zuul")
   @RefreshScope
   public ZuulProperties zuulProperties() {
       return new ZuulProperties();
   }
}

或

package com.imooc.apigateway;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;

@SpringBootApplication
@EnableZuulProxy
public class ApiGatewayApplication {

	public static void main(String[] args) {
		SpringApplication.run(ApiGatewayApplication.class, args);
	}

	@ConfigurationProperties("zuul")
	@RefreshScope
	public ZuulProperties zuulProperties() {
	   return new ZuulProperties();
	}
}

• 这样配置后再到 git 上配置对应的，就可以实现自动刷新啦！