SpringCloud Alibaba快速入门

 

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

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

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

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

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

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>2.2.0.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

1、nacos注册中心

  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848

@EnableDiscoveryClient
@SpringBootApplication
@MapperScan("com.sun.user.mapper")
public class RoleApplicaion {
    public static void main(String[] args) {
        SpringApplication.run(RoleApplicaion.class, args);
    }
}

  application:
    name: acgn-user

2、OpenFeign

微服务模块引入：

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

被调用微服务：

@RestController
@RequestMapping("coupon/coupon")
public class CouponController {
    @Autowired
    private CouponService couponService;

    @RequestMapping("/member/list")
    public R membercoupons(){
        CouponEntity couponEntity = new CouponEntity();
        couponEntity.setCouponName("100-10");
        return R.ok().put("coupons", Arrays.asList(couponEntity));
    }

调用

package com.atguigu.gulimall.member.feign;

import com.atguigu.common.utils.R;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;

@FeignClient("gulimall-coupon")
public interface CouponFeignService {
    @RequestMapping("/coupon/coupon/member/list")
    public R membercoupons();
}

@EnableFeignClients(basePackages = "com.atguigu.gulimall.member.feign")
@EnableDiscoveryClient
@SpringBootApplication
public class GulimallMemberApplication {

测试：

    @Autowired
    CouponFeignService couponFeignService;

    @RequestMapping("coupons")
    public R test1(){
        MemberEntity memberEntity = new MemberEntity();
        memberEntity.setNickname("sun");
        R memberCoupons = couponFeignService.membercoupons();
        return R.ok().put("member", memberEntity).put("coupons", memberCoupons.get("coupons"));
    }

 

3、nacos配置中心

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

 

3.1 nacos配置中心细节

3.1.1 命名空间：

3.1.2 配置集：

所有配置的集合

3.1.3 配置集ID：

3.1.4 配置分组：

spring:
  application:
    name: gulimall-coupon
  cloud:
    nacos:
      config:
        server-addr: 127.0.0.1:8848
        namespace: 2741d1a0-6f52-4824-ae4f-6ed82053a59f
        group: dev

 

3.2 加载多配置集

数据源相关：

mybatis相关：

其他：

bootstrap.yml:

spring:
  application:
    name: gulimall-coupon
  cloud:
    nacos:
      config:
        server-addr: 127.0.0.1:8848
        namespace: 2741d1a0-6f52-4824-ae4f-6ed82053a59f
        group: dev
        extension-configs[0]:
          data-id: datasource.yml
          group: dev
          refresh: true
        extension-configs[1]:
          data-id: mybatis.yml
          group: dev
          refresh: true
        extension-configs[2]:
          data-id: others.yml
          group: dev
          refresh: true

 

4、Gateway网关

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>

 

application.properties:

spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
spring.application.name=gulimall-gateway

 

排除数据源相关：

测试：
application.yml:

spring:
  cloud:
    gateway:
      routes:
        - id: baidu_route
          uri: https://www.baidu.com
          predicates:
            - Query=url,baidu

        - id: qq_route
          uri: https://www.qq.com
          predicates:
            - Query=url,qq

 

http://localhost:88/s?url=baidu --> https://www.baidu.com/s