3 框架搭建

3.1 環(huán)境準(zhǔn)備

（1）VMware Workstation Pro安裝centos7 鏡像

（2）安裝docker

（3）拉取mySQL鏡像虱颗，并創(chuàng)建容器

（4）客戶端連接mysql容器萤捆，建庫(kù)建表（建庫(kù)建表語(yǔ)句在資源文件夾中提供）

虛擬機(jī)數(shù)據(jù)：

• 虛擬機(jī)IP:192.168.211.132

• 虛擬機(jī)賬號(hào)：root 密碼：123456

• 數(shù)據(jù)庫(kù)端口:3306

• 數(shù)據(jù)庫(kù)賬號(hào)：root 密碼：123456

數(shù)據(jù)庫(kù)腳本：資料\數(shù)據(jù)庫(kù)腳本

1564094555825.png

3.2 項(xiàng)目結(jié)構(gòu)說(shuō)明

1559113404367.png

結(jié)構(gòu)說(shuō)明：

changgou-gateway

網(wǎng)關(guān)模塊，根據(jù)網(wǎng)站的規(guī)模和需要栏饮，可以將綜合邏輯相關(guān)的服務(wù)用網(wǎng)關(guān)路由組合到一起。在這里還可以做鑒權(quán)和限流相關(guān)操作曙咽。

changgou-service

微服務(wù)模塊竿拆，該模塊用于存放所有獨(dú)立的微服務(wù)工程。

changgou-service_api

對(duì)應(yīng)工程的JavaBean笨触、Feign懦傍、以及Hystrix配置，該工程主要對(duì)外提供依賴芦劣。

changgou-transaction-fescar

分布式事務(wù)模塊粗俱，將分布式事務(wù)抽取到該工程中，任何工程如需要使用分布式事務(wù)虚吟，只需依賴該工程即可寸认。

changgou-web

web服務(wù)工程签财，對(duì)應(yīng)功能模塊如需要調(diào)用多個(gè)微服務(wù)，可以將他們寫(xiě)入到該模塊中偏塞，例如網(wǎng)站后臺(tái)唱蒸、網(wǎng)站前臺(tái)等

3.3 公共工程搭建

3.3.1 父工程搭建

創(chuàng)建父工程 changgou-parent ,pom.xml文件中增加配置

<?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">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.changgou</groupId>
    <artifactId>changgou-parent</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.4.RELEASE</version>
    </parent>

    <properties>
        <skipTests>true</skipTests>
    </properties>

    <!--依賴包-->
    <dependencies>
        <!--測(cè)試包-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>

        <!--fastjson-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.51</version>
        </dependency>

        <!--swagger文檔-->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.6.1</version>
        </dependency>

        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.6.1</version>
        </dependency>

        <!--
            http://localhost:9011/swagger-ui.html
        -->
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Greenwich.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
</project>

刪除src文件夾

3.3.2 其他公共模塊搭建

創(chuàng)建changgou-gateway、changgou-service烛愧、changgou-service-api油宜、changgou-web工程掂碱，工程全部為pom工程怜姿，并將所有工程的src文件刪除。

pom.xml中打pom包

<packaging>pom</packaging>

項(xiàng)目結(jié)構(gòu)如下：

1564024579642.png

3.4 Eureka微服務(wù)搭建

3.4.1 pom.xml依賴

創(chuàng)建模塊changgou-eureka 疼燥，pom.xml引入依賴

<?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>changgou_parent</artifactId>
        <groupId>com.changgou</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>changgou_eureka</artifactId>

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

3.4.2 appliation.yml配置

創(chuàng)建配置文件application.yml

server:
  port: 7001
eureka:
  instance:
    hostname: 127.0.0.1
  client:
    register-with-eureka: false   #是否將自己注冊(cè)到eureka中
    fetch-registry: false         #是否從eureka中獲取信息
    service-url:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

3.4.3 啟動(dòng)類(lèi)配置

創(chuàng)建包c(diǎn)om.changgou 包下創(chuàng)建啟動(dòng)類(lèi)EurekaApplication沧卢，代碼如下：

1560411732580.png

上圖代碼如下：

@SpringBootApplication
@EnableEurekaServer
public class EurekaApplication {

    public static void main(String[] args) {
        SpringApplication.run(EurekaApplication.class);
    }
}

測(cè)試訪問(wèn)http://localhost:7001/,效果如下：

1560412105435.png

3.5 公共模塊搭建

3.5.1 pom.xml依賴

創(chuàng)建公共子模塊changgou-common，pom.xml引入依賴

<?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>changgou-parent</artifactId>
        <groupId>com.changgou</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>changgou-common</artifactId>

    <dependencies>
        <!--web起步依賴-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- redis 使用-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <!--eureka-client-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <!--openfeign-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
        <!--微信支付-->
        <dependency>
            <groupId>com.github.wxpay</groupId>
            <artifactId>wxpay-sdk</artifactId>
            <version>0.0.3</version>
        </dependency>
        <!--httpclient支持-->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
        </dependency>
    </dependencies>
</project>

公共子模塊引入這些依賴后醉者，其他微服務(wù)引入changgou-common后也自動(dòng)引入了這些依賴

3.5.2 常用對(duì)象

創(chuàng)建entity包 但狭，在entity包下創(chuàng)建返回狀態(tài)碼實(shí)體類(lèi)==[StatusCode]==

/**
 * 返回碼
 */
public class StatusCode {
    public static final int OK = 20000;//成功
    public static final int ERROR = 20001;//失敗
    public static final int LOGINERROR = 20002;//用戶名或密碼錯(cuò)誤
    public static final int ACCESSERROR = 20003;//權(quán)限不足
    public static final int REMOTEERROR = 20004;//遠(yuǎn)程調(diào)用失敗
    public static final int REPERROR = 20005;//重復(fù)操作
    public static final int NOTFOUNDERROR = 20006;//沒(méi)有對(duì)應(yīng)的搶購(gòu)數(shù)據(jù)
}

包下建立類(lèi)==Result==用于微服務(wù)返回結(jié)果給前端

/**
 * 返回結(jié)果實(shí)體類(lèi)
 */
public class Result<T> {
    private boolean flag;//是否成功
    private Integer code;//返回碼
    private String message;//返回消息
    private T data;//返回?cái)?shù)據(jù)

    public Result(boolean flag, Integer code, String message, Object data) {
        this.flag = flag;
        this.code = code;
        this.message = message;
        this.data = (T) data;
    }

    public Result(boolean flag, Integer code, String message) {
        this.flag = flag;
        this.code = code;
        this.message = message;
    }

    public Result() {
        this.flag = true;
        this.code = StatusCode.OK;
        this.message = "操作成功!";
    }

    // getter and setter.....
}

在entity包下建立類(lèi)用于承載分頁(yè)的數(shù)據(jù)結(jié)果

/**
 * 分頁(yè)結(jié)果類(lèi)
 */
public class PageResult<T> {

    private Long total;//總記錄數(shù)
    private List<T> rows;//記錄

    public PageResult(Long total, List<T> rows) {
        this.total = total;
        this.rows = rows;
    }

    public PageResult() {
    }

    //getter and setter ......
}

當(dāng)然，我們還可以將其他工具類(lèi)都一起倒入到工程中撬即，以后會(huì)用到立磁，將資料\工具類(lèi)中的所有類(lèi)直接導(dǎo)入到entity包下。

1564023015741.png

3.6 數(shù)據(jù)訪問(wèn)工程搭建

創(chuàng)建公共模塊changgou-common-db 剥槐，pom文件引入依賴

<?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>changgou-parent</artifactId>
        <groupId>com.changgou</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>changgou-common-db</artifactId>

    <!--依賴-->
    <dependencies>
        <!--對(duì)changgou-common的依賴-->
        <dependency>
            <groupId>com.changgou</groupId>
            <artifactId>changgou-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <!--通用mapper起步依賴-->
        <dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper-spring-boot-starter</artifactId>
            <version>2.0.4</version>
        </dependency>
        <!--MySQL數(shù)據(jù)庫(kù)驅(qū)動(dòng)-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!--mybatis分頁(yè)插件-->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.3</version>
        </dependency>
    </dependencies>
</project>

這個(gè)公共模塊是連接mysql數(shù)據(jù)庫(kù)的公共微服務(wù)模塊唱歧，所以需要連接mysql的微服務(wù)都繼承自此工程。

3.7 商品微服務(wù)搭建

商品微服務(wù)主要是實(shí)現(xiàn)對(duì)商品的增刪改查相關(guān)操作粒竖，以及商品相關(guān)信息的增刪改查颅崩。

3.7.1 公共組件工程搭建

創(chuàng)建changgou-service-api子模塊changgou-service-goods-api，并將資料\javabean\changgou-service-goods-api中的Pojo導(dǎo)入到工程中蕊苗。

1560416099767.png

修改父工程changgou-service-api的pom.xml沿后，添加persistence-api和changgou-common的依賴，代碼如下：

<dependencies>
    <!--通用的common-->
    <dependency>
        <groupId>com.changgou</groupId>
        <artifactId>changgou-common</artifactId>
        <version>1.0-SNAPSHOT</version>
    </dependency>

    <!--每個(gè)工程都有Pojo朽砰，都需要用到該包對(duì)應(yīng)的注解-->
    <dependency>
        <groupId>javax.persistence</groupId>
        <artifactId>persistence-api</artifactId>
        <version>1.0</version>
        <scope>compile</scope>
    </dependency>
</dependencies>

3.7.2 微服務(wù)工程搭建

修改changgou-service的pom.xml引入changgou-common-db的依賴尖滚，代碼如下：

<!--依賴-->
<dependencies>
    <dependency>
        <groupId>com.changgou</groupId>
        <artifactId>changgou-common-db</artifactId>
        <version>1.0-SNAPSHOT</version>
    </dependency>
</dependencies>

在changgou-service中創(chuàng)建changgou-service-goods ，pom.xml引入依賴

<?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>changgou-service</artifactId>
        <groupId>com.changgou</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>changgou-service-goods</artifactId>

    <!--依賴-->
    <dependencies>
        <dependency>
            <groupId>com.changgou</groupId>
            <artifactId>changgou-service-goods-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>
</project>

在resources下創(chuàng)建配置文件application.yml

server:
  port: 18081
spring:
  application:
    name: goods
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://192.168.211.132:3306/changgou_goods?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
    username: root
    password: 123456
eureka:
  client:
    service-url:
      defaultZone: http://127.0.0.1:7001/eureka
  instance:
    prefer-ip-address: true
feign:
  hystrix:
    enabled: true
mybatis:
  configuration:
    map-underscore-to-camel-case: true
  mapper-locations: classpath:mapper/*Mapper.xml
  type-aliases-package: com.changgou.goods.pojo

在包c(diǎn)om.changgou.goods 包下創(chuàng)建啟動(dòng)類(lèi)GoodsApplication瞧柔，代碼如下：

1560416869439.png

上圖代碼如下：

@SpringBootApplication
@EnableEurekaClient
@MapperScan(basePackages = {"com.changgou.goods.dao"})
public class GoodsApplication {
    public static void main(String[] args) {
        SpringApplication.run(GoodsApplication.class);
    }
}

注意 ：@MapperScan是tk.mybatis.spring.annotation包下的熔掺，用于掃描==Mapper==接口
啟動(dòng)changgou-service-goods 再訪問(wèn)<http://localhost:7001/>效果如下：

1564037101313.png