Spring Cloud Zuul 浅谈Spring Cloud中的API网关服务Zuul（springmvc）

想了解浅谈Spring Cloud中的API网关服务Zuul的相关内容吗，_江南一点雨在本文为您仔细讲解Spring Cloud Zuul的相关知识和一些Code实例，欢迎阅读和指正，我们先划重点：Spring,Cloud,Zuul,spring,cloud,网关服务，下面大家一起来学习吧。

<parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-parent</artifactId>
  <version>1.5.7.RELEASE</version>
  <relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  <java.version>1.8</java.version>
  <spring-cloud.version>Dalston.SR3</spring-cloud.version>
</properties>
<dependencies>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-zuul</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-eureka</artifactId>
  </dependency>
</dependencies>
<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>

@SpringBootApplication
@EnableZuulProxy
public class ApiGatewayApplication {

  public static void main(String[] args) {
    SpringApplication.run(ApiGatewayApplication.class, args);
  }
}

# 基础信息配置
spring.application.name=api-gateway
server.port=2006
# 路由规则配置
zuul.routes.api-a.path=/api-a/**
zuul.routes.api-a.serviceId=feign-consumer

# API网关也将作为一个服务注册到eureka-server上
eureka.client.service-url.defaultZone=http://localhost:1111/eureka/

public class PermisFilter extends ZuulFilter {
  @Override
  public String filterType() {
    return "pre";
  }

  @Override
  public int filterOrder() {
    return 0;
  }

  @Override
  public boolean shouldFilter() {
    return true;
  }

  @Override
  public Object run() {
    RequestContext ctx = RequestContext.getCurrentContext();
    HttpServletRequest request = ctx.getRequest();
    String login = request.getParameter("login");
    if (login == null) {
      ctx.setSendZuulResponse(false);
      ctx.setResponseStatusCode(401);
      ctx.addZuulResponseHeader("content-type","text/html;charset=utf-8");
      ctx.setResponseBody("非法访问");
    }
    return null;
  }
}

@Bean
PermisFilter permisFilter() {
  return new PermisFilter();
}