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Yyds dry goods inventory springboot integrates gateway to realize gateway function

Grey Wolf_ cxh 2022-01-26 11:20:57 阅读数:60

yyds dry goods inventory springboot

1. Use scenarios ：

The gateway can provide request routing and combination 、 Protocol conversion 、 Safety certification 、 Service authentication 、 Flow control and log monitoring services . There are many optional gateways , such as Nginx、、Linkerd 、eureka、 Spring Cloud Gateway、consul etc. .

Spring Cloud Gateway Make various judgments and handle incoming requests , For example, judge the validity of the request 、 Authority verification , Request address rewrite , Request parameters 、 Header information 、cookie Analysis and rewriting of information , Request rate control , Keep a log, etc . And these can be easily passed through Predicate and GatewayFilter To combine the implementation .

2. Code implementation

1 establish gateway-service service

Introduce dependencies 


<dependency>

 <groupId>org.springframework.cloud</groupId>

 <artifactId>spring-cloud-starter-gateway</artifactId>

 <version>3.0.4</version>

 </dependency>

 <!-- Service registration / Discovery center dependency -->

 <dependency>

 <groupId>com.alibaba.cloud</groupId>

 <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>

 </dependency>



 <!-- The configuration center of the service depends on -->

 <dependency>

 <groupId>com.alibaba.cloud</groupId>

 <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>

 </dependency>



 <!--fegin Components -->

 <dependency>

 <groupId>org.springframework.cloud</groupId>

 <artifactId>spring-cloud-starter-openfeign</artifactId>

 <version>3.0.2</version>

 </dependency>

 <!-- Feign Client for loadBalancing -->

 <dependency>

 <groupId>org.springframework.cloud</groupId>

 <artifactId>spring-cloud-loadbalancer</artifactId>

 <version>3.0.2</version>

 </dependency>

 <!-- Client load balancing loadbalancer-->

 <dependency>

 <groupId>org.springframework.cloud</groupId>

 <artifactId>spring-cloud-starter-loadbalancer</artifactId>

 </dependency>



    

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yml To configure 


server:

 port: 8001



spring:

 application:

 name: gateway-service # service name

 profiles:

 active: dev # Environment settings

 cloud:

 gateway:

 routes:

 # Transparent transmission service

 - id: gateway-client # Set the routing id( In theory, it can be written casually )

 uri: lb://gateway-client # To set up a route url lb://nacos Service registration name

 predicates:

 - Path=/client/** # Path matching rules

 filters:

 - StripPrefix=1

 - id: gateway-consumer

 uri: lb://gateway-consumer

 predicates:

 - Path=/consumer/**

 filters:

 - StripPrefix=1



    

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Cross domain configuration 


@Configuration

public class CorsConfig {

 @Bean

 public CorsWebFilter corsFilter() {

 CorsConfiguration config = new CorsConfiguration();

 config.addAllowedMethod("*");

 config.addAllowedOrigin("*");

 config.addAllowedHeader("*");



 UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(new PathPatternParser());

 source.registerCorsConfiguration("/**", config);



 return new CorsWebFilter(source);

 }

}



    

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2 establish gateway-client service

Introduce dependencies 


<dependency>

 <groupId>org.springframework.boot</groupId>

 <artifactId>spring-boot-starter</artifactId>

 </dependency>



 <dependency>

 <groupId>org.springframework.boot</groupId>

 <artifactId>spring-boot-starter-test</artifactId>

 <scope>test</scope>

 </dependency>



 <!-- Service registration -->

 <dependency>

 <groupId>org.springframework.cloud</groupId>

 <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>

 <version>0.2.1.RELEASE</version>

 </dependency>

 <!-- The service call -->

 <dependency>

 <groupId>org.springframework.cloud</groupId>

 <artifactId>spring-cloud-starter-openfeign</artifactId>

 </dependency>



 <dependency>

 <groupId>org.springframework.boot</groupId>

 <artifactId>spring-boot-starter-web</artifactId>

 </dependency>



    

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yml To configure 


server:

 port: 8002



spring:

 application:

 name: gateway-client # service name

 profiles:

 active: dev # Environment settings

 cloud:

 nacos:

 discovery:

 server-addr: 127.0.0.1:8848 #nacos Service registration



    

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The control layer requests 


@RestController

public class TestController {



 @RequestMapping("/index")

 public String index(){

 return "gateway-client";

 }



}



    

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Start class 


@SpringBootApplication

@EnableDiscoveryClient

public class GatewayClientApplication {



 public static void main(String[] args) {

 SpringApplication.run(GatewayClientApplication.class, args);

 }



}



    

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3. Realization effect

use nacos As a registry , start-up nacos Start after gateway-service, gateway-client project

stay nacos Discovery service registration succeeded

#yyds Dry inventory # springboot Integrate gateway Realize the gateway function _springboot

Make a request in the browser

​ ​http://localhost:8001/client/index​​

Send the request to gateway-client service , Return results

#yyds Dry inventory # springboot Integrate gateway Realize the gateway function _springboot_02

copyright：author[Grey Wolf_ cxh]，Please bring the original link to reprint, thank you. https://en.javamana.com/2022/01/202201261120544834.html

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