SpringCloud

SpringCloud——基于分布式的微服务架构

服务构建

1596435570897

SpringCloud分布式微服务架构的一站式解决方案，是多种微服务架构落地技术的集合体，俗称微服务全家桶。

版本依赖

1596438103877

json转换：https://start.spring.io/actuator/info

1596438285925

工程构建：

微服务cloud整体聚合父工程Project

new
字符编码
注解生效激活
java编译8
美观，过滤文件*.idea;*.iml;

pom

添加一行

<packaging>pom</packaging>

<!--统一管理jar包版本-->
<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <junit.version>4.12</junit.version>
        <lombok.version>1.16.18</lombok.version>
        <log4j.version>1.2.17</log4j.version>
        <mysql.version>5.1.47</mysql.version>
        <druid.version>1.1.16</druid.version>
        <mybatis.spring.boot.version>1.3.0</mybatis.spring.boot.version>
</properties>

<!--子模块继承之后，提供作用：锁定版本+子module不用谢groupId和version-->
<dependencyManagement>
	<dependencies>
      <dependency>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-project-info-reports-plugin</artifactId>
        <version>3.0.0</version>
      </dependency>
      <!--spring boot 2.2.2-->
      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-dependencies</artifactId>
        <version>2.2.2.RELEASE</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
      <!--spring cloud Hoxton.SR1-->
      <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-dependencies</artifactId>
        <version>Hoxton.SR1</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
       <!--spring cloud 阿里巴巴-->
      <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-alibaba-dependencies</artifactId>
        <version>2.1.0.RELEASE</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
      <!--mysql-->
      <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>${mysql.version}</version>
        <scope>runtime</scope>
      </dependency>
      <!-- druid-->
      <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
        <version>${druid.version}</version>
      </dependency>
      <!--mybatis-->
      <dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starter</artifactId>
        <version>${mybatis.spring.boot.version}</version>
      </dependency>
      <!--junit-->
      <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>${junit.version}</version>
      </dependency>
      <!--log4j-->
      <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>${log4j.version}</version>
      </dependency>
    </dependencies>
</dependencyManagement>

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子项目pom：

1596445680179

跳过test：

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Rest微服务工程构建

新建模块cloud-provider-payment8001

pom.xml

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <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>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>
        <!--        mysql-->
        <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.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>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>
    </dependencies>

创建application.yml

server:
  port: 8001

spring:
  application:
    name: cloud-payment-service
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource  #当前数据源操作类型
    driver-class-name: org.gjt.mm.mysql.Driver      #mysql驱动包
    url: jdbc:mysql://localhost:3306/cloud?useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: root
    password: admin

mybatis:
  mapperLocations: classpath:mapper/*.xml
  type-aliases-package: com.kayleh.springcloud.entities #所有Entity别名类所在包

主启动类

package com.kayleh.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * @Author: Wizard
 * @Date: 2020/8/3 18:10
 */
@SpringBootApplication
public class PaymentMain8001 {
    public static void main(String[] args) {
        SpringApplication.run(PaymentMain8001.class, args);
    }
}

业务类

建表SQL

CREATE TABLE `payment`(
`id` BIGINT(20) NOT NULL AUTO_INCREMENT	COMMENT 'ID',
`serial` VARCHAR(200) DEFAULT '',
PRIMARY KEY(`id`)
)ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

entities

主实体类

package com.kayleh.springcloud.entities;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;

/**
 * @Author: Wizard
 * @Date: 2020/8/3 21:23
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Payment implements Serializable {
    private Long id;
    private String serial;
}

Json封装体

package com.kayleh.springcloud.entities;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

/**
 * @Author: Wizard
 * @Date: 2020/8/3 21:27
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class CommonResult<T> {
    //404 not_found
    private Integer code;
    private String message;
    private T data;

    public CommonResult(Integer code, String message) {
        this(code, message, null);
    }
}

DAO

package com.kayleh.springcloud.dao;

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

/**
 * @Author: Wizard
 * @Date: 2020/8/3 23:23
 */
@Mapper
public interface PaymentDao {
    public int create(Payment payment);

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

PaymentMapper.xml(resources目录下的mapper目录)

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTO Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.kayleh.springcloud.dao.PaymentDao">
    <!--    id对应接口的类名-->
    <!--    parameterType对应类的参数类型-->
    <!--    useGeneratedKeys使用生成的主键-->
    <!--    keyProperty主键是id-->
    <insert id="create" parameterType="Payment" useGeneratedKeys="true" keyProperty="id">
        insert into payment(serial) values (#{serial});
    </insert>

    <resultMap id="BaseResultMap" type="com.kayleh.springcloud.entities.Payment">
        <!--column      对应数据库的列名
            property    对应java实体类的属性名
            jdbcType    在数据库的类型-->
        <id column="id" property="id" jdbcType="BIGINT"/>
        <id column="serial" property="serial" jdbcType="VARCHAR"/>
    </resultMap>
    <select id="getPaymentById" parameterType="Long" resultMap="BaseResultMap">
        select * from payment where id = #{id};
    </select>
</mapper>

PaymentService

package com.kayleh.springcloud.service;

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

/**
 * @Author: Wizard
 * @Date: 2020/8/3 23:58
 */
public interface PaymentService {
    public int create(Payment payment);

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

PaymentServiceImpl

package com.kayleh.springcloud.service.impl;

import com.kayleh.springcloud.dao.PaymentDao;
import com.kayleh.springcloud.entities.Payment;
import com.kayleh.springcloud.service.PaymentService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

/**
 * @Author: Wizard
 * @Date: 2020/8/4 0:00
 */
@Service
public class PaymentServiceImpl implements PaymentService {

    //    @Resouce线程安全,是java自带的。
    //    @Autowired是Spring的
    @Resource
    PaymentDao paymentDao;

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

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

PaymentController

package com.kayleh.springcloud.controller;

import com.kayleh.springcloud.entities.CommonResult;
import com.kayleh.springcloud.entities.Payment;
import com.kayleh.springcloud.service.PaymentService;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.annotations.Param;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;

/**
 * @Author: Wizard
 * @Date: 2020/8/4 0:07
 */
@RestController
@Slf4j
public class PaymentController {

    @Resource
    private PaymentService paymentService;

    @PostMapping(value = "/payment/create")
    public CommonResult create(@RequestBody Payment payment) {
        int result = paymentService.create(payment);
        log.info("-------插入结果------" + result);

        if (result > 0) {
            return new CommonResult(200, "插入数据库成功", result);
        } else {
            return new CommonResult(444, "插入数据库失败", null);
        }
    }

    @GetMapping(value = "/payment/get/{id}")
    public CommonResult getPaymentById(@PathVariable("id") Long id) {
        Payment payment = paymentService.getPaymentById(id);
        log.info("-------插入结果------" + payment);

        if (payment != null) {
            return new CommonResult(200, "查询成功", payment);
        } else {
            return new CommonResult(444, "没有对应记录,查询id:" + id, null);
        }
    }

}

消费者订单model

新建工程cloud-consumer-order80

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>cloud</artifactId>
        <groupId>com.kayleh.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-consumer-order80</artifactId>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-actuator</artifactId>
        </dependency>
        <!--        热部署-->
        <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>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

</project>

application.yml

server:
  port: 80

拷贝payment模块的实体类entities

启动类

package com.kayleh.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * @Author: Wizard
 * @Date: 2020/8/4 11:20
 */
@SpringBootApplication
public class OrderMain80 {
    public static void main(String[] args) {
        SpringApplication.run(OrderMain80.class, args);
    }
}

RestTemplate

RestTemplate提供了多种便捷访问远程HTTP访问的方法,是一种简单便捷的访问restful服务模块类,是Spring提供的用于访问Rest服务的客户端模块工具集.

(url,requestMap,ResponseBean.class)三个参数分别代表
REST请求地址、请求参数、HTTP响应转换被转换成的对象类型。

1596517192511

RestTemplate

package com.kayleh.springcloud.config;

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

/**
 * @Author: Wizard
 * @Date: 2020/8/4 12:54
 */
@Configuration
public class ApplicationContextConfig {
    @Bean
    public RestTemplate getRestTemplate() {
        return new RestTemplate();
    }
}

OrderController

package com.kayleh.springcloud.controller;

import com.kayleh.springcloud.entities.CommonResult;
import com.kayleh.springcloud.entities.Payment;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;

/**
 * @Author: Wizard
 * @Date: 2020/8/4 11:24
 */
@RestController
@Slf4j
public class OrderController {

    public static final String PAYMENT_URL = "http://localhost:8001";

    @Resource
    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);
    }
}

即可调用另一个微服务模块

重构, 实体类entities共用

新建工程cloud-api-commons

pom.xml

<dependencies>
        <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>
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.1.0</version>
        </dependency>
    </dependencies>

拷贝payment模块的实体类entities

选中这个模块,使用maven clean和install

然后在consumer模块引入pom坐标

<dependency><!--引入自己定义的api通用包，可以使用Payment支付Entity-->
            <groupId>com.kayleh.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
</dependency>

cloud-provider-payment8001模块也是这样做.