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!
开源软件 | 版本 |
---|---|
springboot | 2.1.6.RELEASE |
jdk | 11.0.3 |
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}"
}
}
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:
- UnionResult
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
*/
@Component
public 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<T> inClass, Class<R> outClass, RewriteFunction<T, R> 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<Object, UnionResult> getRewriteFunction() {
return (exchange, resp) -> Mono.just(UnionResult.builder().requestId(exchange.getRequest().getHeaders().getFirst("cn-buddie.demo.requestId")).result(resp).build());
}
}
package cn.buddie.demo.springcloudgateway.model;
import lombok.Builder;
import lombok.Getter;
import lombok.Setter;
/**
* description
*
* @author buddie.wei
* @date 2019/7/20
*/
@Getter
@Setter
@Builder
public 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亿速云网站,小编将为大家输出更多高质量的实用文章!
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原文链接:https://my.oschina.net/buddie/blog/3076723