Spring-Cloud-Alibaba的简单使用

springcloud

Spring Cloud Alibaba Demo

demo地址:spring-cloud-aliabab-demo

1. 新建项目，并统一依赖管理

1.1 创建项目

spring-cloud-alibaba-demo

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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.lzj</groupId>
    <artifactId>spring-cloud-alibaba-demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>spring-cloud-alibaba-demo</name>
    <description>Demo project for Spring Boot</description>
	<packaging>pom</packaging>
    <properties>
        <java.version>1.8</java.version>
        <maven.compiler.source>${java.version}</maven.compiler.source>
        <maven.compiler.target>${java.version}</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    </properties>

    <modules>
        <module>spring-cloud-alibaba-demo-dependencies</module>
        <module>spring-cloud-alibaba-demo-provider</module>
    </modules>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.lzj</groupId>
                <artifactId>spring-cloud-alibaba-demo-dependencies</artifactId>
                <version>${project.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>


    <profiles>
        <profile>
            <id>default</id>
            <activation>
                <activeByDefault>true</activeByDefault>
            </activation>
            <properties>
                <spring-javaformat.version>0.0.12</spring-javaformat.version>
            </properties>
            <build>
                <plugins>
                    <plugin>
                        <groupId>io.spring.javaformat</groupId>
                        <artifactId>spring-javaformat-maven-plugin</artifactId>
                        <version>${spring-javaformat.version}</version>
                    </plugin>
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-surefire-plugin</artifactId>
                        <configuration>
                            <includes>
                                <include>**/*Tests.java</include>
                            </includes>
                            <excludes>
                                <exclude>**/Abstract*.java</exclude>
                            </excludes>
                            <systemPropertyVariables>
                                <java.security.egd>file:/dev/./urandom</java.security.egd>
                                <java.awt.headless>true</java.awt.headless>
                            </systemPropertyVariables>
                        </configuration>
                    </plugin>
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-enforcer-plugin</artifactId>
                        <executions>
                            <execution>
                                <id>enforce-rules</id>
                                <goals>
                                    <goal>enforce</goal>
                                </goals>
                                <configuration>
                                    <rules>
                                        <bannedDependencies>
                                            <excludes>
                                                <exclude>commons-logging:*:*</exclude>
                                            </excludes>
                                            <searchTransitive>true</searchTransitive>
                                        </bannedDependencies>
                                    </rules>
                                    <fail>true</fail>
                                </configuration>
                            </execution>
                        </executions>
                    </plugin>
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-install-plugin</artifactId>
                        <configuration>
                            <skip>true</skip>
                        </configuration>
                    </plugin>
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-javadoc-plugin</artifactId>
                        <configuration>
                            <skip>true</skip>
                        </configuration>
                        <inherited>true</inherited>
                    </plugin>
                </plugins>
            </build>
        </profile>
    </profiles>
</project>

1.2 创建统一的依赖

spring-cloud-alibaba-demo-dependencies

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.lzj</groupId>
    <artifactId>spring-cloud-alibaba-demo-dependencies</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>
    <properties>
        <spring-cloud.version>Greenwich.RELEASE</spring-cloud.version>
        <spring-cloud-alibaba.version>2.1.1.RELEASE</spring-cloud-alibaba.version>
    </properties>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring-cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
</project>

1.3 Nacos

Nacos 官网

1.4 创建服务提供者

spring-cloud-alibaba-demo-provider

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>
    <parent>
        <groupId>com.lzj</groupId>
        <artifactId>spring-cloud-alibaba-demo</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath>../pom.xml</relativePath>
    </parent>
    <artifactId>spring-cloud-alibaba-demo-provider</artifactId>
    <packaging>jar</packaging>
    <dependencies>
        <!-- Spring Boot Begin -->
        <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>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- Spring Boot End -->
        <!-- Spring Cloud Begin -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
        <!-- Spring Cloud End -->
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.lzj.spring.cloud.alibaba.provider.ProviderApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

ProviderApplication

@SpringBootApplication
@EnableDiscoveryClient
public class ProviderApplication {

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

application.yml

spring:
  application:
    # 服务名
    name: service-provider
  cloud:
    nacos:
      discovery:
        # 服务注册中心
        server-addr: 127.0.0.1:8848
server:
  # 服务端口
  port: 8070
management:
  # 端点检查（健康检查）
  endpoints:
    web:
      exposure:
        include: "*"

controller

@RestController
public class ProviderController {

    @GetMapping("/echo/{string}")
    public String echo(@PathVariable String string){
        return "Hello Nacos Provider "+string;
    }
}

1.5 创建服务消费者

spring-cloud-alibaba-demo-consumer

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>
    <parent>
        <groupId>com.lzj</groupId>
        <artifactId>spring-cloud-alibaba-demo</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath>../pom.xml</relativePath>
    </parent>
    <artifactId>spring-cloud-alibaba-demo-consumer</artifactId>
    <packaging>jar</packaging>
    <dependencies>
        <!-- Spring Boot Begin -->
        <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>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- Spring Boot End -->
        <!-- Spring Cloud Begin -->
        <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-openfeign</artifactId>
        </dependency>
        <!-- Spring Cloud End -->
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.lzj.spring.cloud.alibaba.consumer.ConsumerApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

ConsumerApplication

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class ConsumerApplication {

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

application.yml

spring:
  application:
    name: service-consumer
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848
        
server:
  port: 8081
#健康检查
management:
  endpoints:
    web:
      exposure:
        include: "*"

feignClient

@FeignClient(value = "service-provider")
public interface ConsumerService {

    @GetMapping(value = "/echo/{string}")
    String echo(@PathVariable("string") String string);
}

controller

@RestController
public class ConsumerController {

    @Resource
    private ConsumerService consumerService;

    @GetMapping("/echo/{str}")
    public String echo(@PathVariable String str){
        return "Consumer send str and reply is:" + consumerService.echo(str);
    }
    
}

1.6 加入分布式配置中心

在消费者中增加依赖

<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
</dependency>

创建bootstrap.properties 文件

spring.application.name=service-consumer-config
spring.cloud.nacos.config.server-addr=127.0.0.1:8848
spring.cloud.nacos.config.file-extension=yaml

将application.yml中的配置添加再nacos中
将application.yml文件删除，这里为保证项目完整，更名为tmp_application.yml
启动测试
动态刷新配置

在nacos配置中加入新配置

user:
  name: 张三

更改ConsumerController 增加注解@RefreshScope

@RestController
@RefreshScope
public class ConsumerController {	
	@Value("${user.name}")
    private String username;

    @GetMapping("/user")
    public String user(){
        return username;
    }
}

启动测试访问http://localhost:8081/user 返回结果为：张三
更改配置为

user:
  name: 李四

再次访问：可以看到结果为：李四

1.7 加入`sentinel` 流量监控

获取控制台

从 release 页面下载最新版本的控制台 jar 包。

启动控制台 sentinel-dashboard-version.jar 替换成真实jar包名

java -Dserver.port=8080 -Dcsp.sentinel.dashboard.server=localhost:8080 -Dproject.name=sentinel-dashboard -jar sentinel-dashboard-version.jar

引入依赖

<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
</dependency>

当前spring-cloud-starter-alibaba-sentinel并不支持最新版sentinel 1.7.1的客户端，所以我们下载1.7.0的客户端

配置控制台信息

spring:
  cloud:
    sentinel:
      transport:
        port: 8719
        dashboard: localhost:8080

配置文件打开 Sentinel 对 Feign 的支持：feign.sentinel.enabled=true
加入 spring-cloud-starter-openfeign 依赖使 Sentinel starter 中的自动化配置类生效(已加入)

2.使用dubbo

1.1 创建dubbo服务提供者

spring-cloud-alibaba-demo-dubbo-provider

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>
    <parent>
        <groupId>com.lzj</groupId>
        <artifactId>spring-cloud-alibaba-demo</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>spring-cloud-alibaba-demo-dubbo-provider</artifactId>
    <packaging>pom</packaging>
    <properties>
        <nacos.version>1.1.3</nacos.version>
        <dubbo.version>2.7.3</dubbo.version>
        <spring-context-support.version>1.0.6</spring-context-support.version>
    </properties>
    <dependencies>
        <!-- Apache Dubbo Begin -->
        <dependency>
            <groupId>com.alibaba.nacos</groupId>
            <artifactId>nacos-client</artifactId>
            <version>${nacos.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-registry-nacos</artifactId>
            <version>${dubbo.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>${dubbo.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo</artifactId>
            <version>${dubbo.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>javax.servlet</groupId>
                    <artifactId>servlet-api</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-serialization-kryo</artifactId>
            <version>${dubbo.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.apache.dubbo</groupId>
                    <artifactId>dubbo-common</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.alibaba.spring</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${spring-context-support.version}</version>
        </dependency>

        <!-- Apache Dubbo End -->
    </dependencies>
    <modules>
        <module>spring-cloud-alibaba-demo-dubbo-provider-api</module>
        <module>spring-cloud-alibaba-demo-dubbo-provider-service</module>
    </modules>
</project>

1.2 创建api

spring-cloud-alibaba-demo-dubbo-provider-api

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>
    <parent>
        <groupId>com.lzj</groupId>
        <artifactId>spring-cloud-alibaba-demo-dubbo-provider</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <artifactId>spring-cloud-alibaba-demo-dubbo-provider-api</artifactId>
    <packaging>jar</packaging>
</project>

interface

package com.lzj.spring.cloud.alibaba.dubbo.provider;

/**
 * @author Zijian Liao
 * @date 2020/1/17 18:36
 * @description
 */
public interface HelloService {

    String hello(String string);
}

1.3 创建service

spring-cloud-alibaba-demo-dubbo-provider-service

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>
    <parent>
        <groupId>com.lzj</groupId>
        <artifactId>spring-cloud-alibaba-demo-dubbo-provider</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>spring-cloud-alibaba-demo-dubbo-provider-service</artifactId>
    <packaging>jar</packaging>

    <dependencies>
        <!-- Spring Boot Begin -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- Spring Boot End -->

        <!-- Projects Begin -->
        <dependency>
            <groupId>com.lzj</groupId>
            <artifactId>spring-cloud-alibaba-demo-dubbo-provider-api</artifactId>
            <version>${project.parent.version}</version>
        </dependency>
        <!-- Projects End -->
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.lzj.spring.cloud.alibaba.dubbo.provider.ProviderDubboApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

ProviderDubboApplication

@SpringBootApplication
public class ProviderDubboApplication {

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

application.yml

spring:
  application:
    name: dubbo-provider
  main:
    allow-bean-definition-overriding: true
dubbo:
  scan:
    base-packages: com.lzj.spring.cloud.alibaba.dubbo.provider.service
  protocol:
    name: dubbo
    port: 20881
    #使用kryo实现高速序列化
    serialization: kryo
  provider:
  #负载策略
    loadbalance: roundrobin
  registry:
    address: nacos://127.0.0.1:8848

HelloServiceImpl

package com.lzj.spring.cloud.alibaba.dubbo.provider.service;

import com.lzj.spring.cloud.alibaba.dubbo.provider.HelloService;
import org.apache.dubbo.config.annotation.Service;

/**
 * @author Zijian Liao
 * @date 2020/1/17 18:48
 * @description
 */
@Service(version = "1.0.0")
public class HelloServiceImpl implements HelloService {

    @Override
    public String hello(String string) {
        return "Hello dubbo!";
    }
}

1.4 更新消费者配置

pom.xml

  <!-- Projects Begin -->
        <dependency>
            <groupId>com.lzj</groupId>
            <artifactId>spring-cloud-alibaba-demo-dubbo-provider-api</artifactId>
            <version>${project.parent.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.apache.dubbo</groupId>
                    <artifactId>dubbo-registry-nacos</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-registry-nacos</artifactId>
            <version>2.7.3</version>
        </dependency>
        <!-- Projects End -->

ConsumerController

   @Reference(version = "1.0.0")
    private HelloService helloService;

    @GetMapping("/hello/{str}")
    public String hello(@PathVariable String str){
        return "Consumer send hello and reply is:" + helloService.hello(str);
    }

更新配置

dubbo:
  scan:
  #扫描包
    base-packages: com.lzj.spring.cloud.alibaba.consumer.controller
  protocol:
    name: dubbo
    port: -1
    #使用kryo实现序列化
    serialization: kryo
  registry:
    address: nacos://127.0.0.1:8848

1.使用路由网关

1.1 创建网关GateWay

spring-cloud-alibaba-demo-gateway

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>
    <parent>
        <groupId>com.lzj</groupId>
        <artifactId>spring-cloud-alibaba-demo</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>spring-cloud-alibaba-demo-gateway</artifactId>
    <packaging>jar</packaging>
    <dependencies>
        <!-- Spring Boot Begin -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- Spring Boot End -->
        <!-- Spring Cloud Begin -->
        <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>
        <!-- Spring Cloud End -->
        <!-- Commons Begin -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
        </dependency>
        <!-- Commons Begin -->
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.lzj.spring.cloud.alibaba.gateway.GatewayApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

GatewayApplication

@SpringBootApplication
@EnableDiscoveryClient
public class GatewayApplication {

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

application.yml

spring:
  application:
    # 应用名称
    name: gateway
  main:
    allow-bean-definition-overriding: true
  cloud:
    # 使用 Nacos 作为服务注册发现
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848
    # 路由网关配置
    gateway:
      # 设置与服务注册发现组件结合，这样可以采用服务名的路由策略
      discovery:
        locator:
          enabled: true
      # 配置路由规则
      routes:
        # 采用自定义路由 ID（有固定用法，不同的 id 有不同的功能，详见：https://cloud.spring.io/spring-cloud-gateway/2.0.x/single/spring-cloud-gateway.html#gateway-route-filters）
        - id: provider
          # 采用 LoadBalanceClient 方式请求，以 lb:// 开头，后面的是注册在 Nacos 上的服务名
          uri: lb://service-provider
          predicates:
            # 路径匹配，以 api 开头，直接配置是不生效的，看 filters 配置
            - Path=/api/provider/**
          filters:
            # 此处配置去掉 2 个路径前缀，再配置上面的 Path=/api/provider/**，就能按照 http://localhost:8888/api/provider/** 的方式访问了
            - StripPrefix=2
        - id: consumer
          uri: lb://service-consumer
          predicates:
            - Path=/api/consumer/**
          filters:
            - StripPrefix=2
server:
  port: 8888
logging:
  level:
    org.springframework.cloud.gateway: debug

访问:

服务提供者: http://localhost:8888/api/provider/echo/hello
服务消费者: http://localhost:8888/api/consumer/echo/hello

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springcloud

Spring-Cloud-Alibaba的简单使用

https://zijiancode.cn/archives/springcloudalibabademo

作者

阿紫

发布于

2020-04-20

更新于

2020-04-20

许可协议

CC BY 4.0

Spring-Cloud-Alibaba的简单使用

Spring-Cloud-Alibaba的简单使用

Spring Cloud Alibaba Demo

1. 新建项目，并统一依赖管理

1.1 创建项目

1.2 创建统一的依赖

1.3 Nacos

1.4 创建服务提供者

1.5 创建服务消费者

1.6 加入分布式配置中心

1.7 加入sentinel 流量监控

2.使用dubbo

1.1 创建dubbo服务提供者

1.2 创建api

1.3 创建service

1.4 更新消费者配置

1.使用路由网关

1.1 创建网关GateWay

作者

发布于

更新于

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评论

1.7 加入`sentinel` 流量监控