springcloud整合gateway实现网关代码示例

本篇文章小编给大家分享一下springcloud整合gateway实现网关代码示例，文章代码介绍的很详细，小编觉得挺不错的，现在分享给大家供大家参考，有需要的小伙伴们可以来看看。

1.项目目录：

创建项目gateway作为父类

2.代码实现：

父类依赖

        org.springframework.boot
        spring-boot-starter-parent
        2.6.2
         
    
    com.cxh
    gateway
    0.0.1-SNAPSHOT
    gateway
    Demo project for Spring Boot
    pom
    
        8
        2021.1
        2021.0.0
    

    
        
            
                org.springframework.cloud
                spring-cloud-dependencies
                ${spring-cloud-dependencies.version}
                pom
                import
            
            
                com.alibaba.cloud
                spring-cloud-alibaba-dependencies
                ${spring-cloud-alibaba-dependencies.version}
                pom
                import
            
        
    

创建module项目gateway-client

添加依赖

        com.cxh
        gateway
        0.0.1-SNAPSHOT
         
    
    com.cxh
    gateway-client
    0.0.1-SNAPSHOT
    gateway-client
    Demo project for Spring Boot
    
        1.8
    
    
        
            org.springframework.boot
            spring-boot-starter
        

        
            org.springframework.boot
            spring-boot-starter-test
            test
        
        
            org.springframework.boot
            spring-boot-starter
        

        
            org.springframework.boot
            spring-boot-starter-test
            test
        

        
        
            org.springframework.cloud
            spring-cloud-starter-alibaba-nacos-discovery
            0.2.1.RELEASE
        
        
        
            org.springframework.cloud
            spring-cloud-starter-openfeign
        

        
            org.springframework.boot
            spring-boot-starter-web
        

    

yml配置

server:
  port: 8002

spring:
  application:
    name: gateway-client #服务名
  profiles:
    active: dev #环境设置
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848 #nacos服务注册

控制层

@RestController
public class ClientController {

    @Value("${server.port}")
    private String port;

    @RequestMapping("/index")
    public String index(){
        return "gateway-client端口：" + port;
    }
}

启动类添加注解

@SpringBootApplication
@EnableDiscoveryClient
public class GatewayClientApplication {

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

}

创建module项目gateway-service

添加依赖

        com.cxh
        gateway
        0.0.1-SNAPSHOT
         
    
    com.cxh
    gateway-service
    0.0.1-SNAPSHOT
    gateway-service
    Demo project for Spring Boot
    
        1.8
    
    
        
            org.springframework.boot
            spring-boot-starter
        

        
            org.springframework.boot
            spring-boot-starter-test
            test
        

        
            org.springframework.cloud
            spring-cloud-starter-gateway
            3.0.4
        
        
        
            com.alibaba.cloud
            spring-cloud-starter-alibaba-nacos-discovery
        

        
        
            com.alibaba.cloud
            spring-cloud-starter-alibaba-nacos-config
        

        
            org.springframework.cloud
            spring-cloud-starter-feign
            1.4.3.RELEASE
        
        
            org.springframework.cloud
            spring-cloud-loadbalancer
        
        
            org.springframework.cloud
            spring-cloud-starter-netflix-hystrix
            2.2.10.RELEASE
        


    

yml配置

server:
  port: 8001

spring:
  application:
    name: gateway-service #服务名
  profiles:
    active: dev #环境设置
  cloud:
    gateway:
      routes:
        # 透传服务
        - id: gateway-client #设置路由id
          uri: lb://gateway-client  #设置路由的url lb://nacos服务注册名称
          predicates:
            - Path=/client/** #路径匹配规则
          filters:
            - StripPrefix=1

跨域配置

@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);
    }
}

3.实现效果：

启动nacos后，再启动gateway-client, gateway-service项目，打开浏览器http://localhost:8001/client/index

返回信息：gateway-client端口：8002