SpringCloud Alibaba學習筆記-Eureka（二）

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B站視頻地址

數據庫建表

CREATE TABLE `payment` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `serial` varchar(200) DEFAULT '',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;

一，搭建cloud-eureka-server-7001模塊

建立普通Maven工程
在這里插入圖片描述

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">
    <parent>
        <artifactId>springcloud-alibaba</artifactId>
        <groupId>com.hjm.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-eureka-server-7001</artifactId>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>
        <!--導入自定義公共模塊-->
        <dependency>
            <groupId>com.hjm.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        <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.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>
    </dependencies>
</project>

2, application.yml

server:
  port: 7001

eureka:
  instance:
    hostname: localhost
  client:
    #不在eureka注冊自己
    register-with-eureka: false
    #自己就是注冊中心，維護服務實例，不需要去檢索服務
    fetch-registry: false
    service-url:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

3,EurekaMain7001

package com.hjm.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

/**
 * @Author:huangjm
 * @Date 2020/10/18 23:00
 */
@SpringBootApplication
@EnableEurekaServer
public class EurekaMain7001 {
	public static void main(String[] args) {
		SpringApplication.run(EurekaMain7001.class, args);
	}
}

二，搭建cloud-provider-payment-8001

在這里插入圖片描述

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">
    <parent>
        <artifactId>springcloud-alibaba</artifactId>
        <groupId>com.hjm.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-provider-payment-8001</artifactId>
    <dependencies>
        <dependency>
            <groupId>com.hjm.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        <!--netflix-eureka-client-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <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.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

</project>

application.yml

server:
  port: 8001

spring:
  application:
    name: cloud-payment-service
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: a13680421688
    url: jdbc:mysql://localhost:3306/springcloud?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=GMT%2B8&rewriteBatchedStatements=true

mybatis:
  mapper-locations: classpath:mapper/*.xml
  type-aliases-package: com.hjm.springcloud.entities
eureka:
  client:
    #表示是否將自己注冊進 Eurekaserver 默認為true。
    register-witheureka: true
    #是否從 EurekaServer 抓取已有的注冊信息，默認為 true。單節點無所謂，集群必須設置為true才能配合ribbon使用負載均衡
    fetchRegistry: true
    service-url:
      defaultZone: http://localhost:7001/eureka

PaymentMapper.xml

<?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="com.hjm.springcloud.dao.PaymentDao">

    <insert id="create" parameterType="com.hjm.springcloud.entities.Payment" useGeneratedKeys="true" keyProperty="id">
        insert into payment(serial) values(#{serial})
    </insert>

    <select id="getPaymentById" parameterType="Long" resultType="com.hjm.springcloud.entities.Payment">
        select * from payment where id = #{id}
    </select>
</mapper>

1,PaymentController

package com.hjm.springcloud.controller;

import com.hjm.springcloud.entities.CommonResult;
import com.hjm.springcloud.entities.Payment;
import com.hjm.springcloud.service.PaymentService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

/**
 * @Author:huangjm
 * @Date 2020/10/12 0:02
 */
@RestController
@Slf4j
public class PaymentController {
	@Autowired
	private PaymentService paymentService;

	@PostMapping(value = "/payment/create")
	public CommonResult crate(@RequestBody Payment payment){
		int result = paymentService.create(payment);
		log.info("******插入結果:"+result);
		if(result > 0){
			return new CommonResult(200, "插入數據庫成功", result);
		}
		return new CommonResult(444,"插入數據庫失敗", null);
	}

	@GetMapping(value = "/payment/get/{id}")
	public CommonResult crate(@PathVariable("id")Long id){
		Payment payment = paymentService.getPaymentById(id);
		log.info("******查詢結果:"+payment);
		if(payment != null){
			return new CommonResult(200, "查詢成功", payment);
		}
		return new CommonResult(444,"沒有該記錄，ID:"+id, null);
	}
}

2, PatmentDao

package com.hjm.springcloud.dao;

import com.hjm.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

/**
 * @Author:huangjm
 * @Date 2020/10/11 23:40
 */
@Mapper
public interface PaymentDao {
	int create(Payment payment);

	Payment getPaymentById(@Param("id") Long id);
}

3,PaymentService

package com.hjm.springcloud.service;

import com.hjm.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Param;

/**
 * @Author:huangjm
 * @Date 2020/10/11 23:57
 */
public interface PaymentService {

	int create(Payment payment);

	Payment getPaymentById(@Param("id") Long id);
}

4,PaymentServiceImpl

package com.hjm.springcloud.service.impl;

import com.hjm.springcloud.dao.PaymentDao;
import com.hjm.springcloud.entities.Payment;
import com.hjm.springcloud.service.PaymentService;
import org.apache.ibatis.annotations.Param;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * @Author:huangjm
 * @Date 2020/10/11 23:58
 */
@Service
public class PaymentServiceImpl implements PaymentService {
	@Autowired
	private PaymentDao paymentDao;

	public int create(Payment payment){
		return paymentDao.create(payment);
	}

	public Payment getPaymentById(@Param("id") Long id){
		return paymentDao.getPaymentById(id);
	}
}

三，cloud-consumer-order-80

在這里插入圖片描述

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">
    <parent>
        <artifactId>springcloud-alibaba</artifactId>
        <groupId>com.hjm.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-consumer-order-80</artifactId>

    <dependencies>
        <dependency>
            <groupId>com.hjm.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        <!--netflix-eureka-client-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <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.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>

</project>

application.yml

server:
  port: 80

spring:
  application:
    name: cloud-order-service

eureka:
  client:
    #表示是否將自己注冊進 Eurekaserver 默認為true。
    register-witheureka: true
    #是否從 EurekaServer 抓取已有的注冊信息，默認為 true。單節點無所謂，集群必須設置為true才能配合ribbon使用負載均衡
    fetchRegistry: true
    service-url:
      defaultZone: http://localhost:7001/eureka

1,ApplicationContextConfig(用于調用其他微服務)

package com.hjm.springcloud.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

/**
 * @Author:huangjm
 * @Date 2020/10/13 22:14
 */
@Configuration
public class ApplicationContextConfig {

	@Bean
	public RestTemplate getRestTemplate(){
		return new RestTemplate();
	}
}

2,OrderController

package com.hjm.springcloud.controller;

import com.hjm.springcloud.entities.CommonResult;
import com.hjm.springcloud.entities.Payment;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

/**
 * @Author:huangjm
 * @Date 2020/10/13 22:16
 */
@RestController
public class OrderController {
	private final static String PAYMENT_URL = "http://localhost:8001";
	@Autowired
	private RestTemplate restTemplate;

	@GetMapping("/consumer/payment/create")
	public CommonResult<Payment> create(Payment payment){
		return restTemplate.postForObject(PAYMENT_URL+"/payment/create", payment, CommonResult.class);
	}

	@GetMapping("/consumer/payment/get/{id}")
	public CommonResult<Payment> getPayment(@PathVariable("id")Long id){
		return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id, CommonResult.class);
	}
}

3,OrderMain80

package com.hjm.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

/**
 * @Author:huangjm
 * @Date 2020/10/13 22:05
 */
@EnableEurekaClient
@SpringBootApplication
public class OrderMain80 {
	public static void main(String[] args) {
		SpringApplication.run(OrderMain80.class, args);
	}
}

將項目逐一啟動，在瀏覽器中輸入
http://localhost:7001/
即可看見
在這里插入圖片描述

本文鏈接：https://blog.csdn.net/weixin_43841756/article/details/109171246

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SpringCloud Alibaba學習筆記-Eureka（二）

SpringCloud Alibaba學習筆記-Eureka（二）

一，搭建cloud-eureka-server-7001模塊

1，pom.xml

2, application.yml

3,EurekaMain7001

二，搭建cloud-provider-payment-8001

pom.xml

application.yml

PaymentMapper.xml

1,PaymentController

2, PatmentDao

3,PaymentService

4,PaymentServiceImpl

三，cloud-consumer-order-80

pom.xml

application.yml

1,ApplicationContextConfig(用于調用其他微服務)

2,OrderController

3,OrderMain80

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