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title: SpringCloud 項目構(gòu)建 and 技術(shù)選型
author: mykk
top: false
cover: false
toc: true
mathjax: false
summary: SpringCloud項目搭建
tags:

springcloud
搭建
categories:
分布式技術(shù)棧
abbrlink: 9df20094
reprintPolicy: cc_by
date: 2022-01-12 23:42:15
coverImg:
img:
password:

1、版本

[圖片上傳失敗...(image-3362aa-1648466768288)]

2、官網(wǎng)地址【Spring Cloud】

3、項目搭建-父工程構(gòu)建

父工程坐標(biāo)

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>
    <groupId>com.kk</groupId>
    <artifactId>springcloud2021to2022</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>pom</packaging>


    <!-- 統(tǒng)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>
        <log4j.version>1.2.17</log4j.version>
        <lombok.version>1.16.18</lombok.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>

    <!-- 子模塊繼承之后，提供作用：鎖定版本+子modlue不用寫groupId和version  -->
    <dependencyManagement>
        <dependencies>
            <!--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 alibaba 2.1.0.RELEASE-->
            <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>

            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql.version}</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>${druid.version}</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>${mybatis.spring.boot.version}</version>
            </dependency>
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>${junit.version}</version>
            </dependency>
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>${log4j.version}</version>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>${lombok.version}</version>
                <optional>true</optional>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <fork>true</fork>
                    <addResources>true</addResources>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

4、項目搭建-Rest微服務(wù)工程構(gòu)建

1、坐標(biāo)

<?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>springcloud2021to2022</artifactId>
        <groupId>com.kk</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>cloud-provider-payment8001</artifactId>
    
    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-jdbc -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-devtools -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-test -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>

2、yml

server:
  port: 8001


spring:
  application:
    name: cloud-payment-service
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: org.gjt.mm.mysql.Driver
    url: jdbc:mysql://localhost:3306/spring_cloud?useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: root
    password: a1b2c3

mybatis:
  mapperLocations: classpath:mapper/*.xml
  type-aliases-package: com.kk.springclond.entities

3、主啟動

@SpringBootApplication
public class PaymentMain8001 {
    public static void main(String[] args) {
        SpringApplication.run (PaymentMain8001.class, args);
    }
}

4、業(yè)務(wù)類

1、建表

CREATE TABLE `payment` (
`id`  bigint NOT NULL AUTO_INCREMENT ,
`serial`  varchar(255) NULL ,
PRIMARY KEY (`id`)
)

2、實體（entity）

（1）通用返回結(jié)果實體

@Data
@AllArgsConstructor
@NoArgsConstructor
public class CommonResult<T> {
    private Integer code;
    private String message;
    private T data;

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

（2）Payment

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Payment {
    private Long id;
    private String serial;
}

3、dao層

1、接口PaymentDao編寫

package com.kk.springcloud.dao;
import com.kk.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

@Mapper
public interface PaymentDao {
    public int create(Payment payment); //寫

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

2、mybatis的映射文件PaymentMapper.xml

（1）路徑

src\main\resources\mapper\PaymentMapper.xml

（2）頭文件

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

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

    </insert>

    <resultMap id="BaseResultMap" type="com.kk.springcloud.entities.Payment">
        <id column="id" property="id" jdbcType="BIGINT"></id>
        <id column="serial" property="serial" jdbcType="VARCHAR"></id>
    </resultMap>
    <select id="getPaymentById" parameterType="Long" resultMap="BaseResultMap">
            select * from payment where id=#{id}
    </select>


</mapper>

4、service

1、接口

package com.kk.springcloud.service;
import com.kk.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Param;

public interface PaymentService {
    public int create(Payment payment); //寫

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

2、實現(xiàn)類

package com.kk.springcloud.service.impl;
import com.kk.springcloud.dao.PaymentDao;
import com.kk.springcloud.entities.Payment;
import com.kk.springcloud.service.PaymentService;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;

@Service
public class PaymentServiceImpl implements PaymentService {
    @Resource
    private PaymentDao paymentDao;

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

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

5、controller

package com.kk.springcloud.controller;
import com.kk.springcloud.entities.CommonResult;
import com.kk.springcloud.entities.Payment;
import com.kk.springcloud.service.PaymentService;
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.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.annotation.Resource;

@RestController
@Slf4j
public class PaymentController {

    @Resource
    private PaymentService paymentService;

    @PostMapping(value = "/payment/create")
    public CommonResult create(Payment payment) {
        int result = paymentService.create (payment);
        log.info ("*****插入結(jié)果：" + result);
        if (result > 0) {  //成功
            return new CommonResult (200, "插入數(shù)據(jù)庫成功", result);
        } else {
            return new CommonResult (444, "插入數(shù)據(jù)庫失敗", null);
        }
    }

    @GetMapping(value = "/payment/get/{id}")
    public CommonResult getPaymentById(@PathVariable("id") Long id) {
        Payment payment = paymentService.getPaymentById (id);
        log.info ("*****查詢結(jié)果：" + payment);
        if (payment != null) {  //說明有數(shù)據(jù)，能查詢成功
            return new CommonResult (200, "查詢成功", payment);
        } else {
            return new CommonResult (444, "沒有對應(yīng)記錄，查詢ID：" + id, null);
        }
    }
}

5、測試

1、插入：使用post請求才能被插入，所以在url上無效，可以使用postman

http://localhost:8001/payment/create?serial=mykk02

[圖片上傳失敗...(image-d36e2-1648466768288)]

2、查詢：get請求，url，postman皆可

http://localhost:8001/payment/get/1

[圖片上傳失敗...(image-bdd95d-1648466768288)]

5、熱部署

1、子工程 pom

上面的依賴已經(jīng)有加了，是這個

[圖片上傳失敗...(image-2154f1-1648466768288)]

2、父工程 pom插件

上面的依賴已經(jīng)有加了，是這個

[圖片上傳失敗...(image-8cc33a-1648466768288)]

3、設(shè)置自動編譯

[圖片上傳失敗...(image-b4d78e-1648466768288)]

4、開啟自動更新

1、打開設(shè)置面板

ctrl + shift + alt + /同時按住，點擊第一個Registry...

[圖片上傳失敗...(image-a7ef5f-1648466768288)]

2、兩個打勾

[圖片上傳失敗...(image-c930f9-1648466768288)]

[圖片上傳失敗...(image-d1fded-1648466768288)]

5、重啟 IDEA

6、項目搭建-Order訂單微服務(wù)構(gòu)建

1、坐標(biāo)

<?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>springcloud2021to2022</artifactId>
        <groupId>com.kk</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-consumer-order80</artifactId>
    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web  -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-devtools -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-test -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

</project>

2、yml

server:
  port: 80

3、主啟動

package com.kk.springcloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class OrderMain80 {
    public static void main(String[] args) {
        SpringApplication.run (OrderMain80.class,args);
    }
}

4、業(yè)務(wù)類

1、創(chuàng)建entities

將cloud-provider-payment8001工程下的entities包下的兩個實體類復(fù)制過來

2、RestTemplate

1、官網(wǎng)：

https://docs.spring.io/spring-framework/docs/5.2.2.RELEASE/javadoc-api/org/springframework/web/client/RestTemplate.html

2、是什么

[圖片上傳失敗...(image-45e0de-1648466768289)]

3、怎么用

[圖片上傳失敗...(image-ac4d2e-1648466768289)]

3、配置類

ApplicationContextConfig

package com.kk.springcloud.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

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

4、創(chuàng)建 controller

package com.kk.springcloud.controller;
import com.kk.springcloud.entities.CommonResult;
import com.kk.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.RestController;
import org.springframework.web.client.RestTemplate;
import javax.annotation.Resource;

@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);  //寫操作
    }

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

5、測試

1、先啟動cloud-provider-payment8001

2、再啟動cloud-consumer-order80

3、測試消費者接口

http://localhost/consumer/payment/get/1

注意點：被調(diào)用的生產(chǎn)者接口傳參記得加注解

[圖片上傳失敗...(image-34bf7d-1648466768289)]

7、項目重構(gòu)

1、觀察問題

1、系統(tǒng)中有重復(fù)部分，重構(gòu)

[圖片上傳失敗...(image-5b9331-1648466768289)]

2、新建公共模塊【cloud-api-commons】

1、pom

<?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>springcloud2021to2022</artifactId>
        <groupId>com.kk</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>cloud-api-commons</artifactId>
    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-devtools -->
        <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>

        <!-- https://mvnrepository.com/artifact/cn.hutool/hutool-all -->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.1.0</version>
        </dependency>
    </dependencies>

</project>

2、實體

將訂單模塊和支付模塊公共實體放到這里

[圖片上傳失敗...(image-f43ce5-1648466768289)]

3、改造訂單和支付

1、刪除各自的原先有過的entities文件夾

2、各自分別引入公共模塊

        <!--引入公共部分-->
        <dependency>
            <groupId>com.kk</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>

[圖片上傳失敗...(image-4d59b9-1648466768289)]

7、項目模塊結(jié)構(gòu)圖

[圖片上傳失敗...(image-45b887-1648466768289)]

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SpringCloud -1- 項目搭建和技術(shù)選型

1、版本

2、官網(wǎng)地址【Spring Cloud】

1、英文

2、中文

3、springboot

3、項目搭建-父工程構(gòu)建

4、項目搭建-Rest微服務(wù)工程構(gòu)建

1、坐標(biāo)

2、yml

3、主啟動

4、業(yè)務(wù)類

1、建表

2、實體（entity）

（1）通用返回結(jié)果實體

（2）Payment

3、dao層

1、接口PaymentDao編寫

2、mybatis的映射文件PaymentMapper.xml

（1）路徑

（2）頭文件

4、service

1、接口

2、實現(xiàn)類

5、controller

5、測試

1、插入：使用post請求才能被插入，所以在url上無效，可以使用postman

2、查詢：get請求，url，postman皆可

5、熱部署

1、子工程 pom

2、父工程 pom插件

3、設(shè)置自動編譯

4、開啟自動更新

1、打開設(shè)置面板

2、兩個打勾

5、重啟 IDEA

6、項目搭建-Order訂單微服務(wù)構(gòu)建

1、坐標(biāo)

2、yml

3、主啟動

4、業(yè)務(wù)類

1、創(chuàng)建entities

2、RestTemplate

1、官網(wǎng)：

2、是什么

3、怎么用

3、配置類

4、創(chuàng)建 controller

5、測試

1、先啟動cloud-provider-payment8001

2、再啟動cloud-consumer-order80

3、測試消費者接口

注意點：被調(diào)用的生產(chǎn)者接口傳參記得加注解

7、項目重構(gòu)

1、觀察問題

1、系統(tǒng)中有重復(fù)部分，重構(gòu)

2、新建公共模塊【cloud-api-commons】

1、pom

2、實體

3、改造訂單和支付

1、刪除各自的原先有過的entities文件夾

2、各自分別引入公共模塊

7、項目模塊結(jié)構(gòu)圖

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1、版本

2、官網(wǎng)地址【Spring Cloud】

1、英文

2、中文

3、項目搭建-父工程構(gòu)建

4、項目搭建-Rest微服務(wù)工程構(gòu)建

2、yml

3、主啟動

4、業(yè)務(wù)類

1、建表

2、實體（entity）

1、接口PaymentDao編寫

2、mybatis的映射文件PaymentMapper.xml

4、service

2、實現(xiàn)類

5、controller

5、測試

1、插入：使用post請求才能被插入，所以在url上無效，可以使用postman

2、查詢：get請求，url，postman皆可

5、熱部署

1、子工程 pom

2、父工程 pom插件

3、設(shè)置自動編譯

4、開啟自動更新

1、打開設(shè)置面板

2、兩個打勾

5、重啟 IDEA

6、項目搭建-Order訂單微服務(wù)構(gòu)建

2、yml

3、主啟動

4、業(yè)務(wù)類

2、RestTemplate

2、是什么

3、怎么用

4、創(chuàng)建 controller

1、先啟動cloud-provider-payment8001

2、再啟動cloud-consumer-order80

7、項目重構(gòu)

1、觀察問題

1、系統(tǒng)中有重復(fù)部分，重構(gòu)

2、新建公共模塊【cloud-api-commons】

1、pom

2、實體

1、刪除各自的原先有過的entities文件夾

2、各自分別引入公共模塊

7、項目模塊結(jié)構(gòu)圖