Spring Cloud Alibaba 路由网关(Gateway，完整可用)

骑猪看日落 2023-02-11 13:28 199阅读 0赞

**1.先完成nacos-server项目，提供服务**

**2.pom.xml**

<?xml version="1.0" encoding="UTF-8"?>
    
    <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/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
      <modelVersion>4.0.0</modelVersion>
    
      <groupId>com.cxb</groupId>
      <artifactId>nacos-server</artifactId>
      <version>0.0.1-SNAPSHOT</version>
    
      <name>nacos-server</name>
      
      <url>http://www.example.com</url>
    <parent>
    	<groupId>org.springframework.boot</groupId>
    	<artifactId>spring-boot-starter-parent</artifactId>
    	<version>2.0.5.RELEASE</version> 
    </parent>
      <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>
    <dependencyManagement>
    	<dependencies>
    		<dependency>
    			<groupId>org.springframework.cloud</groupId>
    			<artifactId>spring-cloud-dependencies</artifactId>
    			<version>Finchley.SR1</version>
    			<type>pom</type>
    			<scope>import</scope>
    		</dependency>
    		<dependency>
    			<groupId>com.alibaba.cloud</groupId>
    			<artifactId>spring-cloud-alibaba-dependencies</artifactId>
    			<version>2.0.0.RELEASE</version>
    			<type>pom</type>
    			<scope>import</scope>
    		</dependency>
    	</dependencies>
    </dependencyManagement>
      <dependencies>
        <dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-web</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-actuator</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>com.alibaba.cloud</groupId>
    			<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>org.projectlombok</groupId>
    			<artifactId>lombok</artifactId>
    			<version> 1.16.22</version>
    			<optional>true</optional>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-test</artifactId>
    			<scope>test</scope>
    		</dependency>
      </dependencies>
    
      <build>
        
      </build>
    </project>

**3.application.properties**

server.port=8070
    spring.application.name=cloud-nacos-server
    
    spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848

**4.CloudNacosServerApplication**

package com.cxb.nacos_server;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.RestController;
    
    /**
     * Hello world!
     *
     */
    @EnableDiscoveryClient
    @SpringBootApplication
    public class CloudNacosServerApplication 
    {
        public static void main( String[] args )
        {
            SpringApplication.run(CloudNacosServerApplication.class, args);
        }
        
        @RestController
    	class EchoController {
    		@RequestMapping(value = "/echo/{string}", method = RequestMethod.GET)
    		public String echo(@PathVariable String string) {
    			return "hello Nacos Discovery " + string;
    		}
    
    		@RequestMapping(value = "/divide", method = RequestMethod.GET)
    		public String divide(@RequestParam Integer a, @RequestParam Integer b) {
    			return String.valueOf(a / b);
    		}
    	}
    }

**5.启动服务**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70][]

**\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*gateway\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\***

**1.pom.xml**

<?xml version="1.0" encoding="UTF-8"?>
    
    <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/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    	<modelVersion>4.0.0</modelVersion>
    
    	<groupId>com.cxb</groupId>
    	<artifactId>nacos-gataway</artifactId>
    	<version>0.0.1-SNAPSHOT</version>
    
    	<name>nacos-gataway</name>
    	
    	<url>http://www.example.com</url>
    	<parent>
    		<groupId>org.springframework.boot</groupId>
    		<artifactId>spring-boot-starter-parent</artifactId>
    		<version>2.0.5.RELEASE</version> 
    	</parent>
    	<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>
    	<dependencyManagement>
    		<dependencies>
    			<dependency>
    				<groupId>org.springframework.cloud</groupId>
    				<artifactId>spring-cloud-dependencies</artifactId>
    				<version>Finchley.SR1</version>
    				<type>pom</type>
    				<scope>import</scope>
    			</dependency>
    			<dependency>
    				<groupId>com.alibaba.cloud</groupId>
    				<artifactId>spring-cloud-alibaba-dependencies</artifactId>
    				<version>2.0.0.RELEASE</version>
    				<type>pom</type>
    				<scope>import</scope>
    			</dependency>
    		</dependencies>
    	</dependencyManagement>
    	<dependencies>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-actuator</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>com.alibaba.cloud</groupId>
    			<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework.cloud</groupId>
    			<artifactId>spring-cloud-starter-gateway</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>org.projectlombok</groupId>
    			<artifactId>lombok</artifactId>
    			<version> 1.16.22</version>
    			<optional>true</optional>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-test</artifactId>
    			<scope>test</scope>
    		</dependency>
    
    	</dependencies>
    
    	<build>
    
    	</build>
    </project>

**2.application.properties**

server.port=18085
    #\u914D\u7F6E Nacos Server \u5730\u5740
    spring.application.name=nacos-gateway
    spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
    management.endpoints.web.exposure.include=*
    
    # \u914D\u7F6E\u6587\u4EF6\u4E2D\u914D\u7F6E Spring Cloud Gateway \u8DEF\u7531
    spring.cloud.gateway.routes[0].id=nacos-route
    #\u683C\u5F0F\u4E3A\uFF1Alb://\u5E94\u7528\u6CE8\u518C\u670D\u52A1\u540D
    spring.cloud.gateway.routes[0].uri=lb://cloud-nacos-server
    spring.cloud.gateway.routes[0].predicates[0].name=Path
    spring.cloud.gateway.routes[0].predicates[0].args[pattern]=/nacos/**
    spring.cloud.gateway.routes[0].filters[0]=StripPrefix=1

**3.GatawayApplication**

package com.cxb.nacos_gataway;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    
    /**
     * Hello world!
     *
     */
    @EnableDiscoveryClient
    @SpringBootApplication
    public class GatawayApplication 
    {
        public static void main( String[] args )
        {
            SpringApplication.run(GatawayApplication.class, args);
        }
    }

**4.启动项目测试**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 1][]

**访问[http://localhost:8070/echo/456][http_localhost_8070_echo_456] 调用服务本身的接口**

![20200523215344513.png][]

**通过gateway配置的访问：[http://localhost:18085/nacos/echo/8999][http_localhost_18085_nacos_echo_8999]**

![20200523215408319.png][]

**[http://localhost:18085/nacos/divide?a=10&b=2][http_localhost_18085_nacos_divide_a_10_b_2]**

![20200523215743849.png][]

这里实现找了很多demo参考，要么pom文件的依赖各种报错，要么properties里面的配置各种不能用，虽说文件少，特么花了我大半天的时间，心塞啊（桑心0.0）

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200523214934561.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/2020052321531911.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2,size_16,color_FFFFFF,t_70
[http_localhost_8070_echo_456]: http://localhost:8070/echo/456
[20200523215344513.png]: https://img-blog.csdnimg.cn/20200523215344513.png
[http_localhost_18085_nacos_echo_8999]: http://localhost:18085/nacos/echo/8999
[20200523215408319.png]: https://img-blog.csdnimg.cn/20200523215408319.png
[http_localhost_18085_nacos_divide_a_10_b_2]: http://localhost:18085/nacos/divide?a=10&b=2
[20200523215743849.png]: https://img-blog.csdnimg.cn/20200523215743849.png