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四，Eureka 第四章

2.1.3 增加依赖

 <!--添加依赖-->
    <dependencies>
     <!--Eureka Server-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>

        <!--增加公共方法-->
        <dependency>
            <groupId>cn.bdqn</groupId>
            <artifactId>springcloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>

        <!--web-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!--监控-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>

         <!--测试-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

    </dependencies>

2.1.4 yml

server:
    port: 7001
eureka:
    instance:
        hostname: localhost #eureka服务器端的

    client:
        #false 表示不向注册中心注册自己
        register-with-eureka: false
        #false 表示自己端就是注册中心，我的职责就是维护服务实例，并不需要去检索服务
        fetch-register: false

        server-url:
            #设置与Eureka server交互的地址查询服务和注册服务都需要依赖这个地址
            defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

2.1.5编写主启动类


@EnableEurekaServer
@SpringBootApplication
public class EurakeServer7001Application {
    public static void main(String[] args) {
        SpringApplication.run(EurakeSever7001Application.class,args);
    }
}

2.2.2修改pom添加依赖

 <!--添加Eureka client -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

2.2.3修改yml：添加Eureka的配置

 eureka:
   client:
     #表示是否将自己注册进EurekaServer默认为true
      register-with-eureka: true
      #是否从EurekaServer抓取已有的注册信息，默认为true 单节点无所谓，集群必须设置true 才能配合ribbon  使用负载均衡
      fetch-registry: true
      service-url:
        defaultZone: http://localhost:7001/eureka
      instance:
        prefer-ip-address: true #使用ip地址注册

2.2.4修改主启动类：标注Eureka客户端


@SpringBootApplication
@EnableEurekaClient
    public class PaymentApplication {
        public static void main(String[] args) {
            SpringApplication.run(PaymentApplication.class,args);
        }
}

2.3.2修改pom添加依赖

        <!--eureka client-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

2.3.3 修改yml：添加Eureka的配置

eureka:
  client:
    #表示是否将自己注册进EurekaServer默认为true
    register-with-eureka: true
    #是否从EurekaServer抓取已有的注册信息，默认为true 单节点无所谓，集群必须设置true 才能配合ribbon  使用负载均衡
    fetch-registry: true
    server-url:
      defaultZone: http://localhost:7001/eureka
    instance:
      prefer-ip-address: true #使用ip地址注册

2.3.4修改启动类 标注Eureka客户端

@SpringBootApplication
@EnableEurekaClient
public class OrderApplication {
    public static void main(String[] args) {
        SpringApplication.run(OrderApplication.class,args);
    }
}

2.3.4修改主启动类 标注为Eureka客户端

2.3.6补充


//    private static final String PAYMENT_URL="http://localhost:8001";
    @Autowired
    private RestTemplate restTemplate;

    @Autowired
    private DiscoveryClient discoveryClient;

    //根据id查询
    @GetMapping("/consumer/payment/get/{id}")
    public ResponseResult queryById(@PathVariable("id") Integer id){
       List<ServiceInstance> serviceInstances = discoveryClient.getInstances("SPRINGCLOUD-PAYMENT-PROVIDER-SERVICE");
       ServiceInstance instance = serviceInstances.get(0);
       ResponseResult rs = restTemplate.getForObject("http://"+instance.getHost()+instance.getPort()+"/payment/get/"+id,ResponseResult.class);
//            ResponseResult rs =restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,ResponseResult.class);
            return rs;
    }
    //创建订单
    @GetMapping("/consumer/payment/save")
    public ResponseResult save(Payment payment){
//        ResponseResult rs =restTemplate.postForObject(PAYMENT_URL+"/payment/save", payment,ResponseResult.class);
        List<ServiceInstance> serviceInstances =   discoveryClient.getInstances("SPRINGCLOUD-PAYMENT-PROVIDER-SERVICE");
        ServiceInstance instance =  serviceInstances.get(0);
        ResponseResult rs = restTemplate.postForObject("http://"+instance.getHost()+instance.getPort()+"/payment/save",payment,ResponseResult.class);
        return  rs;
    }
}

3.2.1修改pom添加依赖

<!--依赖-->
    <dependencies>

        <!--eureka server-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>

        <!--公共方法-->
        <dependency>
            <groupId>cn.bdqn</groupId>
            <artifactId>springcloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>

        <!--web-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!--热部署工具-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>

        <!--测试-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

    </dependencies>

3.2.2编写yml

server:
    port: 7002

eureka:
  instance:
    hostname: eureka7002.com #eureka服务器端的

  client:
    #false 表示不向注册中心注册自己
    register-with-eureka: false
    #false 表示自己端就是注册中心，我的职责就是维护服务实例，并不需要去检索服务
    fetch-registry: false

    service-url:
      #设置与Eureka server交互的地址查询服务和注册服务都需要依赖这个地址
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

3.2.5 编写启动类

@SpringBootApplication
@EnableEurekaServer
public class EurekaServer7002Application {
    public static void main(String[] args) {
        SpringApplication.run(EurekaServer7002Application.class,args);
    }
}

3.3.3修改pom添加依赖


  <dependencies>
      <!--eureka server-->
      <dependency>
          <groupId>org.springframework.cloud</groupId>
          <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
      </dependency>

      <!--公共类-->
      <dependency>
          <groupId>cn.bdqn</groupId>
          <artifactId>springcloud-api-commons</artifactId>
          <version>${project.version}</version>
      </dependency>

    <!--web-->
      <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-web</artifactId>
      </dependency>

      <!--热部署-->
      <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-devtools</artifactId>
      </dependency>

      <!--测试-->
      <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-test</artifactId>
          <scope>test</scope>
      </dependency>

  </dependencies>

3.3.4编写yml

server:
  port: 7003

eureka:
  instance:
    hostname: eureka7003.com #eureka服务器端的

  client:
    #false 表示不向注册中心注册自己
    register-with-eureka: false
    #false 表示自己端就是注册中心，我的职责就是维护服务实例，并不需要去检索服务
    fetch-registry: false

    service-url:
        #设置与Eureka server交互的地址查询服务和注册服务都需要依赖这个地址
        defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

3.3.5编写启动类

@SpringBootApplication
@EnableEurekaServer
public class EurekaServer7003Application {
    public static void main(String[] args) {
        SpringApplication.run(EurekaServer7003Application.class,args);
    }
}

3.4.2 修改后的配置文件

springcloud-eureka-sever-7001

server:
    port: 7001
eureka:
    instance:
        hostname: eureka7001.com #eureka服务器端的

    client:
        #false 表示不向注册中心注册自己
        register-with-eureka: false
        #false 表示自己端就是注册中心，我的职责就是维护服务实例，并不需要去检索服务
        fetch-register: false

        service-url:
            #设置与Eureka server交互的地址查询服务和注册服务都需要依赖这个地址
           # defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
           defaultZone: http://eureka7001.com:7002/eureka/,http://eureka7003.com:7002/eureka/

springcloud-eureka-sever-7001 

server:
    port: 7002

eureka:
  instance:
    hostname: eureka7002.com #eureka服务器端的

  client:
    #false 表示不向注册中心注册自己
    register-with-eureka: false
    #false 表示自己端就是注册中心，我的职责就是维护服务实例，并不需要去检索服务
    fetch-registry: false

    service-url:
      #设置与Eureka server交互的地址查询服务和注册服务都需要依赖这个地址
      # defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
      defaultZone: http://eureka7001.com:7001/eureka/,http://eureka7003.com:7003/eureka/

springcloud-eureka-sever003

server:
  port: 7003

eureka:
  instance:
    hostname: eureka7003.com #eureka服务器端的

  client:
    #false 表示不向注册中心注册自己
    register-with-eureka: false
    #false 表示自己端就是注册中心，我的职责就是维护服务实例，并不需要去检索服务
    fetch-registry: false

    service-url:
        #设置与Eureka server交互的地址查询服务和注册服务都需要依赖这个地址
       # defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
      defaultZone: http://eureka7002.com:7002/eureka/,http://eureka7001.com:7001/eureka/

4.1支付微服务发布到 Eureka Sever中

 server:
  port: 8001
 spring:
  application:
    name: springcloud-payment-provider-service
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/springcloud_db?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=GMT
    username: root
    password: xiaoduo456new

 mybatis:
  mapper-locations: classpath:mapper/*.xml
  type-aliases-package: cn.bdqn.domain # 所有Entity别名类所在包

 eureka:
   client:
     #表示是否将自己注册进EurekaServer默认为true
      register-with-eureka: true
      #是否从EurekaServer抓取已有的注册信息，默认为true 单节点无所谓，集群必须设置true 才能配合ribbon  使用负载均衡
      fetch-registry: true
      service-url:
        #defaultZone: http://localhost:7001/eureka
        defaultZone: http://eureka7001.com:7001/eureka,
                     http://eureka7002.com:7002/eureka,
                     http://eureka7003.com:7003/eureka,
      instance:
        prefer-ip-address: true #使用ip地址注册

4.2订单微服务发布到Eureka Server中

 server:
  port: 8001
 spring:
  application:
    name: springcloud-payment-provider-service
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/springcloud_db?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=GMT
    username: root
    password: xiaoduo456new

 mybatis:
  mapper-locations: classpath:mapper/*.xml
  type-aliases-package: cn.bdqn.domain # 所有Entity别名类所在包

 eureka:
   client:
     #表示是否将自己注册进EurekaServer默认为true
      register-with-eureka: true
      #是否从EurekaServer抓取已有的注册信息，默认为true 单节点无所谓，集群必须设置true 才能配合ribbon  使用负载均衡
      fetch-registry: true
      service-url:
        #defaultZone: http://localhost:7001/eureka
        defaultZone: http://eureka7001.com:7001/eureka,
                     http://eureka7002.com:7002/eureka,
                     http://eureka7003.com:7003/eureka,
      instance:
        prefer-ip-address: true #使用ip地址注册

5.2.2修改pom 添加依赖

<!--依懒-->
    <dependencies>

        <!--添加Eureka client -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <!--公共的部分-->
        <dependency>
            <groupId>cn.bdqn</groupId>
            <artifactId>springcloud-api-commons</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

        <!--web-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--监控-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <!--数据库-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.0.0</version>
        </dependency>
        <!--阿里云数据源-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
        </dependency>
         <!--驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>

        </dependency>
        <!--jdbc-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <!--热部署-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        
        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

5.2.3编辑yml

server:
  port: 8002

spring:
  application:
    name: springcloud-payment-provider-service

  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/springcloud_db?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=GMT
    username: root
    password: xiaoduo456new

mybatis:
  mapper-locations: classpath:mapper/*.xml
  type-aliases-package: cn.bdqn.domain

eureka:
  client:
    #表示是否将自己注册进EurekaServer默认为true
    register-with-eureka: true
    #是否从EurekaServer抓取已有的注册信息，默认为true 单节点无所谓，集群必须设置true 才能配合ribbon  使用负载均衡
    fetch-registry: true

    service-url:
      defaultZone: http://eureka7001.com:7001/eureka,
                   http://eureka7002.com:7002/eureka,
                   http://eureka7003.com:7003/eureka,

    instance:
      prefer-ip-address: true #使用ip地址注册

5.24编写启动类

@SpringBootApplication
@EnableEurekaClient
public class Payment8002Application {
    public static void main(String[] args) {

        SpringApplication.run(Payment8002Application.class,args);
    }
}

5.25编写PaymentMapper接口 


@Mapper
public interface PaymentMapper {

    //保存一个支付流水
    public void insert(Payment payment);

    //根据id获取具体的支付信息
    public Payment selectById(@Param("id") Integer id);
}

5.2.6编写PaymentMapper.xml映射文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
        PUBLIC "--//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.bdqn.Mapper.PaymentMapper">
    <resultMap id="PaymentResultMap" type="cn.bdqn.domain.Payment">
        <id column="id" property="id"></id>
        <id column="flow_number" property="flowNumber"></id>
    </resultMap>
    <insert id="insert" parameterType="cn.bdqn.Mapper.PaymentMapper">
        insert into t_payment(flow_number) values(#{flowNumber})
    </insert>
    <select id="selectById" resultMap="PaymentResultMap">
        select  id,flow_number from t_payment where id=#{id};
    </select>
</mapper>

5.

5.2.7编写payment业务接口以及实现类


public interface PaymentServer {
    //保存一个支付流水
    public void save(Payment payment);

    //根据id获取具体的支付信息
    public Payment queryById(Integer id);

}


@Service
public class PaymentServerImpl implements PaymentServer {
    @Autowired
    private PaymentMapper paymentMapper;

    @Override
    public Payment queryById(Integer id) {
        return paymentMapper.selectById(id);
    }

    @Override
    public void save(Payment payment) {
         paymentMapper.insert(payment);
    }
}

5.2.8 编写paymentController控制器


@RestController
public class PaymentConroller {

    @Autowired
    private PaymentServerImpl paymentServer;

    @GetMapping("/payment/get/{id}")
    public ResponseResult queryById(@PathVariable(name="id") Integer id){
        Payment payment = paymentServer.queryById(id);
        if(payment!=null) {
          return  new ResponseResult(200,"成功",payment);
        }else{
          return  new ResponseResult(404,"没有对应的记录，查询id"+id,null);
        }
    }

    @PostMapping("/payment/save")
    public ResponseResult save(@RequestBody Payment payment){
        try {
            paymentServer.save(payment);
           return new ResponseResult(200,"插入成功",null);
        }catch (Exception e){
            e.printStackTrace();
           return new ResponseResult(200,"插入失败",null);
        }
    }
}

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本文转载自: https://blog.csdn.net/zyu67/article/details/131878151
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