在訪問不同的url時,通過gateway對路徑的攔截,按url的區別分配到不同服務器上。
具體實現
首先創建一個父module,eureka-family,同時開啓consul
服務提供者
創建子module,eureka-client-hello(其實服務發現工具用的是consul,但命名成eureka了,不過也不重要!)
pom.xml如下
<?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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.hpsyche</groupId>
<artifactId>eureka-client-hello</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>eureka-client-hello</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR2</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-consul-discovery</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>
修改application.yml,如下
server:
port: 8761
spring:
application:
name: consul-server-hello
cloud:
consul:
host: localhost
port: 8500
discovery:
serviceName: server-hello
在啓動類添加註解@EnableDiscoveryClient
同時添加controller接口,如下
package com.hpsyche.eurekaclienthello.controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @author Hpsyche
*/
@RestController("/hello")
public class HelloController {
@GetMapping("/hello")
public String hello(){
return "hello";
}
}
同上,創建服務提供者eureka-client-hi
application.yml如下
server:
port: 8762
spring:
application:
name: consul-server-hi
cloud:
consul:
host: localhost
port: 8500
discovery:
serviceName: server-hi
同樣在啓動類加上@EnableDiscoveryClient
註解,同時創建controller
package com.hpsyche.eurekaclienthi.controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @author Hpsyche
*/
@RestController("/hi")
public class HiController {
@GetMapping("/hi")
public String hi(){
return "hi";
}
}
gateway模塊
創建gateway模塊,引入gateway starter等,pom.xml如下
<?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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.hpsyche</groupId>
<artifactId>gateway-client</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>gateway-client</name>
<description>Demo project for Spring Boot</description>
<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-gateway</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-consul-discovery</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>
其application.yml如下所示,
server:
port: 8750
spring:
cloud:
gateway:
discovery:
locator:
lowerCaseServiceId: true
enabled: true
routes:
- id: server-hello
uri: lb://server-hello
order: 8000
predicates:
- Path=/api/server1/**
filters:
- StripPrefix=2
- id: server-hi
uri: lb://server-hi
order: 8001
predicates:
- Path=/api/server2/**
filters:
- StripPrefix=2
application:
name: gateway-client
啓動三個服務,訪問localhost:8500,如下所示:
訪問http://localhost:8750/api/server1/hello
同樣訪問http://localhost:8750/api/server2/hi,均能正常訪問。
配置成功!