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40 lines
944 B
40 lines
944 B
# 自定义过滤器
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演示在网关追加一个header
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```java
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public class CustomFilter implements GlobalFilter, Ordered {
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@Override
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public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
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// 演示在网关追加header
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ApiParam apiParam = ServerWebExchangeUtil.getApiParam(exchange);
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String token = apiParam.fetchAccessToken();
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ServerWebExchange serverWebExchange = ServerWebExchangeUtil.addHeaders(exchange, httpHeaders -> {
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httpHeaders.add("token", token);
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});
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return chain.filter(serverWebExchange);
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}
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@Override
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public int getOrder() {
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// 自定义过滤器可以从0开始
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return 0;
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}
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}
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```
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使用过滤器，在sop-gateway中找到MyConfig，添加：
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```java
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@Configuration
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public class MyConfig {
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...
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@Bean
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CustomFilter customFilter() {
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return new CustomFilter();
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}
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...
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}
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``` |