How to modify the returned data by SpringCloud gateway
本篇内容介绍了"SpringCloud gateway怎么修改返回数据"的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧!希望大家仔细阅读，能够学有所成!
SpringCloud gateway 修改返回数据版本说明开源软件版本springboot2.1.6.RELEASEjdk11.0.3gradle
主要引入了springboot 2.1,lombok
plugins { id 'org.springframework.boot' version '2.1.6.RELEASE' id 'java' id "io.freefair.lombok" version "3.6.6"}apply plugin: 'io.spring.dependency-management'group = 'cn.buddie.demo'version = '0.0.1-SNAPSHOT'sourceCompatibility = '11'repositories { mavenCentral()}ext { set('springCloudVersion', "Greenwich.SR2")}dependencies { implementation 'org.springframework.cloud:spring-cloud-starter-gateway' compile 'org.projectlombok:lombok:1.18.8' testImplementation 'org.springframework.boot:spring-boot-starter-test'}dependencyManagement { imports { mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}" }}yaml
定义路由及过滤器 test-route路由，当Path为/users时，转到uri中配置的链接http://127.0.0.1:8123/users中。使用UnionResult来过滤
spring: cloud: gateway: enabled: true routes: - id: test-route uri: http://127.0.0.1:8123/users predicates: - Path=/users filters: - UnionResultfilter
yaml中配置的filter名字，加"GatewayFilterFactory",就是对应的过滤器Java类
package cn.buddie.demo.springcloudgateway.filter;import cn.buddie.demo.springcloudgateway.model.UnionResult;import org.springframework.cloud.gateway.filter.GatewayFilter;import org.springframework.cloud.gateway.filter.factory.rewrite.ModifyResponseBodyGatewayFilterFactory;import org.springframework.cloud.gateway.filter.factory.rewrite.RewriteFunction;import org.springframework.stereotype.Component;import reactor.core.publisher.Mono;/** * description * * @author buddie.wei * @date 2019/7/20 */@Componentpublic class UnionResultGatewayFilterFactory extends ModifyResponseBodyGatewayFilterFactory { @Override public GatewayFilter apply(Config config) { return new ModifyResponseGatewayFilter(this.getConfig()); } private Config getConfig() { Config cf = new Config(); // Config.setRewriteFunction(Class inClass, Class outClass, RewriteFunction rewriteFunction) // inClass 原数据类型，可以指定为具体数据类型，我这里指定为Object,是为了处理多种数据类型。 // 当然支持多接口返回多数据类型的统一修改，yaml中的配置，path,uri需要做相关调整 // outClass 目标数据类型 // rewriteFunction 内容重写方法 cf.setRewriteFunction(Object.class, UnionResult.class, getRewriteFunction()); return cf; } private RewriteFunction getRewriteFunction() { return (exchange, resp) -> Mono.just(UnionResult.builder().requestId(exchange.getRequest().getHeaders().getFirst("cn-buddie.demo.requestId")).result(resp).build()); }}modelpackage cn.buddie.demo.springcloudgateway.model;import lombok.Builder;import lombok.Getter;import lombok.Setter;/** * description * * @author buddie.wei * @date 2019/7/20 */@Getter@Setter@Builderpublic class UnionResult { private String requestId; private Object result;}"SpringCloud gateway怎么修改返回数据"的内容就介绍到这里了，感谢大家的阅读。如果想了解更多行业相关的知识可以关注网站，小编将为大家输出更多高质量的实用文章!
