SpringCloud Gateway 的使用（一）（建议收藏）｜牛气冲天新年征文

<properties>
    <spring.cloud-version>Hoxton.SR8</spring.cloud-version>
</properties>
<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>
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spring:
  cloud:
    gateway:
      routes:
        - id: weight_high
          uri: http://localhost:8080/
          predicates:
            - Path=/gateway/a
          filters:
#           去掉请求路径中的 第一个  如 /gateway/a 变成/a
            - StripPrefix=1
#           重新设置这个路由地址
            - SetPath=/debug
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spring:
  cloud:
    gateway:
      routes:
      - id: cookie_route
        uri: https://example.org
        predicates:
#           匹配在这个时间之后的
            - After=2017-01-20T17:42:47.789-07:00[America/Denver]
#           匹配在这个时间之后的
            - Before=2017-01-20T17:42:47.789-07:00[America/Denver]
#           匹配这个时间中间的
            - Between=2017-01-20T17:42:47.789-07:00[America/Denver], 2017-01-21T17:42:47.789-07:00[America/Denver]
#           匹配 cookie 为 chocolate=ch.p 时拦截该请求
            - Cookie=chocolate, ch.p
#           当 header 中有 X-Request-Id 该请求头时，且它的值匹配该正则时 拦截
            - Header=X-Request-Id, \d+
#           匹配该 host 地址~
            - Host=**.somehost.org,**.anotherhost.org
#           匹配该 请求方法
            - Method=GET,POST
#           匹配该路径
            - Path=/gateway/a
#           匹配该请求参数~  当请求参数为red 且值为 gree开头的~
            - Query=red, gree.
#           匹配 网址为  192.168.1.1 - 192.168.1.254
            - RemoteAddr=192.168.1.1/24
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spring:
  cloud:
    gateway:
      routes:
      - id: weight_high
        uri: https://weighthigh.org
        predicates:
        - Weight=group1, 8
      - id: weight_low
        uri: https://weightlow.org
        predicates:
        - Weight=group1, 2
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@Component
public class CustomGlobalFilter implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        log.info("custom global filter");
        return chain.filter(exchange);
    }
    @Override
    public int getOrder() {
        return -1;
    }