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五，Eureka 第五章,eureka,云原生

5.3.2 修改pom添加依赖

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

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

        <!--mybatis-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.0.0</version>
        </dependency>

        <!--连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
        </dependency>

        <!--mysql连接-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

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

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


        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

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

5.3.3编写yml

server:
  port: 8003

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

eureka:
  client:
    #表示是否将自己注册进EurekaServer默认为true
    register-width-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,

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

五，Eureka 第五章,eureka,云原生

5.3.4编写启动类


@SpringBootApplication
@EnableEurekaClient
public class Payment8003Application {
    public static void main(String[] args) {
        SpringApplication.run(Payment8003Application.class, args);
    }
}

五，Eureka 第五章,eureka,云原生

5.3.5编写paymentMapper接口


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 selectById(Integer id);
}

5.3.6编写映射文件

<?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>

5.3.6编写Payment业务接口以及实现类型

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 selectById(Integer id);
}


@Service
public class PaymentServerImpl implements PaymentServer {

    @Autowired
    private PaymentMapper paymentMapper;

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

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

5.3.8编写paymentController控制器


@RestController
@EnableEurekaClient
public class PaymentController {

    @Autowired
    private PaymentServer paymentServer;

    

    @GetMapping("/payment/get/{id}")
       public ResponseResult selectById(@PathVariable(name="id") Integer id) {
        Payment payment = paymentServer.selectById(id);
        if (payment != null) {
            return new ResponseResult(200, "成功", payment);
        } else {
            return new ResponseResult(200, "失败", 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(404,"插入失败",null);
        }
    }
}

五，Eureka 第五章,eureka,云原生

5.4查看Eureka server的状态

eureka.com:7001的状态

五，Eureka 第五章,eureka,云原生

eureka.com:7002

五，Eureka 第五章,eureka,云原生

eureka.com:7003

五，Eureka 第五章,eureka,云原生

5.5测试之前的一个修改

五，Eureka 第五章,eureka,云原生

8001支付微服务


@RestController
public class PaymentController {

  @Autowired
  private PaymentService paymentService;

  @Value("${server.port}")
  private  Integer serverPort;

  @GetMapping("/payment/get/{id}")
  public ResponseResult queryById(@PathVariable(name="id") Integer id){
      Payment payment=paymentService.queryById(id);
      if(payment!=null){
          return new ResponseResult(200, "成功！--port:"+serverPort ,payment);
      }else{
          return  new ResponseResult(404,"没有对应记录,查询ID:"+id, null);
      }
  }

  @PostMapping("/payment/save")
  public ResponseResult save(@RequestBody Payment payment){
      try {
          paymentService.save(payment);
          return new ResponseResult(200,"成功",null);
      }catch (Exception e){
          e.printStackTrace();
          return new ResponseResult(500,"失败",null);
      }
  }

8002支付微服务


@RestController
public class PaymentConroller {

    @Autowired
    private PaymentServerImpl paymentServer;

    @Value("${server.port}")
    Integer serverPort;

    @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！----port:"+serverPort,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);
        }
    }
}

8003支付服务


@RestController
@EnableEurekaClient
public class PaymentController {

    @Autowired
    private PaymentServer paymentServer;

    @Value("${server.port}")
    Integer serverPort;

    @GetMapping("/payment/get/{id}")
    public ResponseResult selectById(@PathVariable(name="id") Integer id) {
        Payment payment = paymentServer.selectById(id);
        if (payment != null) {
            return new ResponseResult(200, "成功! ----port:"+serverPort, 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(404,"插入失败",null);
        }
    }

}

五，Eureka 第五章,eureka,云原生

5.5.3 测试

五，Eureka 第五章,eureka,云原生

5.5.4.1步骤一

修改订单微服务orderController


@RestController
public class OrderController {

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

    //服务名
       private static  final String PAYMENT_URL= "http://SPRINGCLOUD-PAYMENT-PROVIDER-SERVICE";


    @Autowired
    private DiscoveryClient discoveryClient;

    //根据id查询
    @GetMapping("/consumer/payment/get/{id}")
    public ResponseResult queryById(@PathVariable("id") Integer id){
//     ResponseResult rs =restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,ResponseResult.class);//第一种方法通过ip
        //第二种方法通过服务名
//        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);

        //第三种方法
        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){
        //第一种方法 ip
//        ResponseResult rs =restTemplate.postForObject(PAYMENT_URL+"/payment/save", payment,ResponseResult.class);
        //第二种方法 应用名称
//        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);
        // 第三种方法
        ResponseResult rs = restTemplate.postForObject(PAYMENT_URL+"/payment/save", payment, ResponseResult.class);
        return  rs;
    }
}

5.5.4.2步骤二

修改applicationcontextConfig类，再去注入RestTemplate的时候，加上一个@loadBalanced注解


@Configuration
public class ApplicationContextConfig {

    @Bean
    @LoadBalanced
    public RestTemplate restTemplate(){
        return new RestTemplate();
    }
}

五，Eureka 第五章,eureka,云原生

payment8001 支付微服务的yml文件

 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:
        #单机版
        #defaultZone: http://localhost:7001/eureka
        #集群版
        defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka,http://eureka7003.com:7003/eureka,
   instance:
      instance-id: ${spring.cloud.client.ip-address}:${server.port} #显示 主机名称
      prefer-ip-address: true  #使用ip地址注册

payment8002 支付微服务的yml文件

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
      instance-id: ${spring.cloud.client.ip-address}:${server.port}

payment8003 支付微服务的yml文件

server:
  port: 8003

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

eureka:
  client:
    #表示是否将自己注册进EurekaServer默认为true
    register-width-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
      instance-id: ${spring.cloud.client.ip-address}:${server.port}

五，Eureka 第五章,eureka,云原生

打开Payment8001支付微服务的yml文件

 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:
        #单机版
        #defaultZone: http://localhost:7001/eureka
        #集群版
        defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka,http://eureka7003.com:7003/eureka,
   instance:
      instance-id: ${spring.cloud.client.ip-address}:${server.port} #显示 主机名称
      prefer-ip-address: true  #使用ip地址注册
      #该实例给服务中心发送心跳的间隔时间，用于表明该服务实例可用
      lease-renewal-interval-in-seconds: 2
      #服务中心删除此服务实例的等待时间(秒为单位)时间间隔为最后一次服务中心接受到的心跳时间
      lease-expiration-duration-in-seconds: 10

五，Eureka 第五章,eureka,云原生

打开Payment8002支付微服务的yml文件

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
      instance-id: ${spring.cloud.client.ip-address}:${server.port}
      #该实例给服务中心发送心跳的间隔时间，用于表明该服务实例可用
      lease-renewal-interval-in-seconds: 2
      #服务中心删除此服务实例的等待时间(秒为单位)时间间隔为最后一次服务中心接受到的心跳时间
      lease-expiration-duration-in-seconds: 10

打开Payment8003支付微服务的yml文件

server:
  port: 8003

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

eureka:
  client:
    #表示是否将自己注册进EurekaServer默认为true
    register-width-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
      instance-id: ${spring.cloud.client.ip-address}:${server.port}
      #该实例给服务中心发送心跳的间隔时间，用于表明该服务实例可用
      lease-renewal-interval-in-seconds: 2
      #服务中心删除此服务实例的等待时间(秒为单位)时间间隔为最后一次服务中心接受到的心跳时间
      lease-expiration-duration-in-seconds: 10

五，Eureka 第五章,eureka,云原生

7.3.2.注册中心Eureka Server7001

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://eureka7002.com:7002/eureka/,http://eureka7003.com:7003/eureka/
    server:
        enable-self-preservation: true
        eviction-interval-timer-in-ms: 3000

五，Eureka 第五章,eureka,云原生

客户端payment8001

 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:
        #单机版
        #defaultZone: http://localhost:7001/eureka
        #集群版
        defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka,http://eureka7003.com:7003/eureka,
   instance:
      instance-id: ${spring.cloud.client.ip-address}:${server.port} #显示 主机名称
      prefer-ip-address: true  #使用ip地址注册
      #该实例给服务中心发送心跳的间隔时间，用于表明该服务实例可用
      lease-renewal-interval-in-seconds: 2
      #服务中心删除此服务实例的等待时间(秒为单位)时间间隔为最后一次服务中心接受到的心跳时间
      lease-expiration-duration-in-seconds: 10

五，Eureka 第五章,eureka,云原生文章来源地址https://www.toymoban.com/news/detail-605404.html