Spring Cloud 2.x系列之网关zuul入门（二）

2022-06-30 16:44:12 浏览数 (1)

上一篇Spring Cloud 2.x系列之网关zuul入门（一）讲解了网关zuul的path-url这种转发方式；这一篇讲解一下path-serviceId这种转发方式。path-serviceId这种方式需要使用到注册中心eureka

1、 新建项目sc-zuul-consumer，该项目主要提供一个Controller，两个接口，对应的pom.xml文件如下

代码语言：javascript复制
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">

   <modelVersion>4.0.0</modelVersion>



   <groupId>spring-cloud</groupId>

   <artifactId>sc-zuul-consumer</artifactId>

   <version>0.0.1-SNAPSHOT</version>

   <packaging>jar</packaging>



   <name>sc-zuul-consumer</name>

   <url>http://maven.apache.org</url>



   <parent>

      <groupId>org.springframework.boot</groupId>

      <artifactId>spring-boot-starter-parent</artifactId>

      <version>2.0.4.RELEASE</version>

   </parent>



   <dependencyManagement>

      <dependencies>

        <dependency>

           <groupId>org.springframework.cloud</groupId>

           <artifactId>spring-cloud-dependencies</artifactId>

           <version>Finchley.RELEASE</version>

           <type>pom</type>

           <scope>import</scope>

        </dependency>

      </dependencies>

   </dependencyManagement>



   <properties>

      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

      <maven.compiler.source>1.8</maven.compiler.source>

      <maven.compiler.target>1.8</maven.compiler.target>

   </properties>



   <dependencies>

      <dependency>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-web</artifactId>

      </dependency>

      <!-- 说明是一个 eureka client-->

      <dependency>

        <groupId>org.springframework.cloud</groupId>

         <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>

      </dependency>

   </dependencies>

</project>

2、 新建配置文件application.yml

代码语言：javascript复制
server:

  port: 7090



spring:

  application:

    name: sc-zuul-consumer


eureka:

  client:

    registerWithEureka: true #是否将自己注册到Eureka服务中，默认为true

    fetchRegistry: true #是否从Eureka中获取注册信息，默认为true

    serviceUrl:

      defaultZone:http://localhost:5001/eureka/

3、 新建Controller

代码语言：javascript复制
package sc.zuul.consumer.controller;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;


import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;



import sc.zuul.consumer.model.User;



@RestController
public class UserController{



   @RequestMapping("/user/getUser/{id}")
   public Map<String, Object> getUser(@PathVariable Integer id) {

      System.out.println("id = "   id);

      Map<String,Object> resp = new HashMap<String, Object>();

      resp.put("code", "000000");

      resp.put("msg", "success");

      User u = new User();

      u.setId(1);

      u.setPosition("cto");

      u.setUsername("黄金");

      resp.put("body", u);

      returnresp;

   }



   @RequestMapping("/user/listUser")
   public Map<String, Object> listUser() {

      Map<String,Object> resp = new HashMap<String, Object>();

      resp.put("code", "000000");

      resp.put("msg", "success");

      User u1 = new User();

      u1.setId(1);

      u1.setPosition("cto");

      u1.setUsername("黄金");



      User u2 = new User();

      u2.setId(2);

      u2.setPosition("cto");

      u2.setUsername("白银");



      List<User> list = newArrayList<User>();

      list.add(u1);

      list.add(u2);

      resp.put("body", list);



      returnresp;

   }



}

4、 新建springboot启动类ZuulConsumerApplication.java

代码语言：javascript复制
package sc.zuul.consumer;



import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.cloud.netflix.eureka.EnableEurekaClient;



@SpringBootApplication

@EnableEurekaClient

public class ZuulConsumerApplication {



public static void main(String[] args) {

       SpringApplication.run(ZuulConsumerApplication.class,args);

}

}

5、 先启动注册中心项目sc-eureka-server，再启动sc-zuul-consumer

访问接口：http://127.0.0.1:7090/user/listUser

访问接口：http://127.0.0.1:7090/user/getUser/1

6、 新建网关项目sc-zuul-towway，对应的pom.xml文件如下

代码语言：javascript复制
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">

   <modelVersion>4.0.0</modelVersion>



   <groupId>spring-cloud</groupId>

   <artifactId>sc-zuul-towway</artifactId>

   <version>0.0.1-SNAPSHOT</version>

   <packaging>jar</packaging>



   <name>sc-zuul-towway</name>

   <url>http://maven.apache.org</url>

   <parent>

      <groupId>org.springframework.boot</groupId>

      <artifactId>spring-boot-starter-parent</artifactId>

      <version>2.0.4.RELEASE</version>

   </parent>



   <dependencyManagement>

      <dependencies>

        <dependency>

           <groupId>org.springframework.cloud</groupId>

           <artifactId>spring-cloud-dependencies</artifactId>

           <version>Finchley.RELEASE</version>

           <type>pom</type>

           <scope>import</scope>

        </dependency>

      </dependencies>

   </dependencyManagement>



   <properties>

      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

      <maven.compiler.source>1.8</maven.compiler.source>

      <maven.compiler.target>1.8</maven.compiler.target>

   </properties>



   <dependencies>

      <!-- 说明是一个 eureka client-->

      <dependency>

        <groupId>org.springframework.cloud</groupId>

         <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>

      </dependency>



      <dependency>

        <groupId>org.springframework.cloud</groupId>

        <artifactId>spring-cloud-starter-netflix-zuul</artifactId>

      </dependency>

      <!--

      <dependency>

         <groupId>org.springframework.cloud</groupId>

          <artifactId>spring-cloud-starter-zuul</artifactId>

         <version>1.4.6.RELEASE</version>

      </dependency>

      -->


   </dependencies>

</project>

备注：springboot2.x后spring-cloud-starter-zuul被标志为过期

7、 新建配置文件application.yml

代码语言：javascript复制
server:

  port: 8090



spring:

  application:

    name: sc-zuul-towway



# 路由规则配置

zuul:

  routes:

    user:

      path: /api/**

      serviceId: sc-zuul-consumer



#API网关也将作为一个服务注册到eureka-server上

eureka:

  client:

    registerWithEureka: true #是否将自己注册到Eureka服务中，默认为true

    fetchRegistry: true #是否从Eureka中获取注册信息，默认为true

    serviceUrl:

      defaultZone:http://localhost:5001/eureka/

8、 新建启动类ZuulApplication.java

代码语言：javascript复制
package sc.zuul.towway;



import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

import org.springframework.cloud.netflix.zuul.EnableZuulProxy;



@SpringBootApplication

@EnableZuulProxy

@EnableEurekaClient
public class ZuulApplication {


   public static void main(String[] args) {

      SpringApplication.run(ZuulApplication.class, args);

   }

}

9、 启动项目ZuulApplication.java

10、 验证

访问注册中心

访问：http://127.0.0.1:8090/api/user/listUser

访问：http://127.0.0.1:8090/api/user/getUser/1

源码：

代码语言：javascript复制
https://gitee.com/hjj520/spring-cloud-2.x/tree/master/sc-zuul-consumer
https://gitee.com/hjj520/spring-cloud-2.x/tree/master/sc-zuul-towway
http java api maven

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