springcloud整合gateway怎么实现网关

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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: 8002spring:  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

@RestControllerpublic 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@EnableDiscoveryClientpublic 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: 8001spring:  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

@Configurationpublic 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

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