目錄
基礎使用
Maven依賴
注意：不能引入 spring-cloud-starter-web，會出現錯誤
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
<version>2.0.0.RELEASE</version>
</dependency>
</dependencies>
application配置
server:
port: 80
####服務網關名稱
spring:
application:
name: mayikt-gateway
cloud:
gateway:
###路由策略
routes:
###路由id
- id: mayikt
####轉發http://www.mayikt.com/
uri: http://www.mayikt.com/
###匹配規則
predicates:
- Path=/mayikt/**
###瀏覽器請求127.0.0.1/mayikt會轉發到http://www.mayikt.com/
瀏覽器輸入127.0.0.1/mayikt會轉發到http://www.mayikt.com/
Gateway整合Nacos實現服務轉發
Maven依賴
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
<version>2.0.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
<version>0.2.2.RELEASE</version>
</dependency>
</dependencies>
application配置
server:
port: 80
####服務網關名稱
spring:
application:
name: mayikt-gateway
cloud:
gateway:
discovery:
locator:
####開啓以服務id去註冊中心上獲取轉發地址
enabled: true
###路由策略
routes:
###路由id
- id: mayikt
####轉發http://www.mayikt.com/
uri: http://www.mayikt.com/
###匹配規則
predicates:
- Path=/mayikt/**
###路由id
- id: member
#### 基於lb負載均衡形式轉發，mayikt-member爲nacos中的會員服務名稱
uri: lb://mayikt-member
filters:
- StripPrefix=1
###匹配規則
predicates:
- Path=/member/**
nacos:
discovery:
server-addr: 127.0.0.1:8848
### nacos註冊中心地址
自定義TokenFilter實現參數攔截
案例：攔截所求請求，如果請求參數不包含token則返回500響應碼
@Component
public class TokenFilter implements GlobalFilter {
// 攔截所求請求，如果請求參數不包含token則返回500響應碼
@Override
public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
String token = exchange.getRequest().getQueryParams().getFirst("token");
if (token == null || token.isEmpty()) {
// 封裝響應內容
ServerHttpResponse response = exchange.getResponse();
response.setStatusCode(HttpStatus.BAD_REQUEST);
String msg = "token not is null ";
DataBuffer buffer = response.bufferFactory().wrap(msg.getBytes());
return response.writeWith(Mono.just(buffer));
}
// 使用網關過濾
return chain.filter(exchange); // 放行
}
}