3 框架搭建
3.1 环境准备
(1)VMware Workstation Pro安装centos7 镜像
(2)安装docker
(3)拉取mySQL镜像,并创建容器
(4)客户端连接mysql容器,建库建表(建库建表语句在资源文件夹中提供)
虚拟机数据:
虚拟机IP:192.168.211.132
虚拟机账号:root 密码:123456
数据库端口:3306
数据库账号:root 密码:123456
数据库脚本:资料\数据库脚本
3.2 项目结构说明
结构说明:
changgou-gateway
网关模块,根据网站的规模和需要,可以将综合逻辑相关的服务用网关路由组合到一起。在这里还可以做鉴权和限流相关操作。
changgou-service
微服务模块,该模块用于存放所有独立的微服务工程。
changgou-service_api
对应工程的JavaBean、Feign、以及Hystrix配置,该工程主要对外提供依赖。
changgou-transaction-fescar
分布式事务模块,将分布式事务抽取到该工程中,任何工程如需要使用分布式事务,只需依赖该工程即可。
changgou-web
web服务工程,对应功能模块如需要调用多个微服务,可以将他们写入到该模块中,例如网站后台、网站前台等
3.3 公共工程搭建
3.3.1 父工程搭建
创建父工程 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>
<!--依赖包-->
<dependencies>
<!--测试包-->
<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文档-->
<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>
删除src文件夹
3.3.2 其他公共模块搭建
创建changgou-gateway、changgou-service、changgou-service-api、changgou-web工程,工程全部为pom工程,并将所有工程的src文件删除。
pom.xml中打pom包
<packaging>pom</packaging>
项目结构如下:
3.4 Eureka微服务搭建
3.4.1 pom.xml依赖
创建模块changgou-eureka ,pom.xml引入依赖
<?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
创建配置文件application.yml
server:
port: 7001
eureka:
instance:
hostname: 127.0.0.1
client:
register-with-eureka: false #是否将自己注册到eureka中
fetch-registry: false #是否从eureka中获取信息
service-url:
defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
3.4.3 启动类配置
创建包com.changgou 包下创建启动类EurekaApplication,代码如下:
上图代码如下:
@SpringBootApplication
@EnableEurekaServer
public class EurekaApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaApplication.class);
}
}
测试访问http://localhost:7001/
,效果如下:
3.5 公共模块搭建
3.5.1 pom.xml依赖
创建公共子模块changgou-common,pom.xml引入依赖
<?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起步依赖-->
<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>
公共子模块引入这些依赖后,其他微服务引入changgou-common后也自动引入了这些依赖
3.5.2 常用对象
创建entity包 ,在entity包下创建返回状态码实体类==[StatusCode]==
/**
* 返回码
*/
public class StatusCode {
public static final int OK = 20000;//成功
public static final int ERROR = 20001;//失败
public static final int LOGINERROR = 20002;//用户名或密码错误
public static final int ACCESSERROR = 20003;//权限不足
public static final int REMOTEERROR = 20004;//远程调用失败
public static final int REPERROR = 20005;//重复操作
public static final int NOTFOUNDERROR = 20006;//没有对应的抢购数据
}
包下建立类==Result==用于微服务返回结果给前端
/**
* 返回结果实体类
*/
public class Result<T> {
private boolean flag;//是否成功
private Integer code;//返回码
private String message;//返回消息
private T data;//返回数据
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包下建立类用于承载分页的数据结果
/**
* 分页结果类
*/
public class PageResult<T> {
private Long total;//总记录数
private List<T> rows;//记录
public PageResult(Long total, List<T> rows) {
this.total = total;
this.rows = rows;
}
public PageResult() {
}
//getter and setter ......
}
当然,我们还可以将其他工具类都一起倒入到工程中,以后会用到,将资料\工具类
中的所有类直接导入到entity包下。
3.6 数据访问工程搭建
创建公共模块changgou-common-db ,pom文件引入依赖
<?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>
<!--依赖-->
<dependencies>
<!--对changgou-common的依赖-->
<dependency>
<groupId>com.changgou</groupId>
<artifactId>changgou-common</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<!--通用mapper起步依赖-->
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-spring-boot-starter</artifactId>
<version>2.0.4</version>
</dependency>
<!--MySQL数据库驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!--mybatis分页插件-->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.2.3</version>
</dependency>
</dependencies>
</project>
这个公共模块是连接mysql数据库的公共微服务模块,所以需要连接mysql的微服务都继承自此工程。
3.7 商品微服务搭建
商品微服务主要是实现对商品的增删改查相关操作,以及商品相关信息的增删改查。
3.7.1 公共组件工程搭建
创建changgou-service-api子模块changgou-service-goods-api,并将资料\javabean\changgou-service-goods-api
中的Pojo导入到工程中。
修改父工程changgou-service-api的pom.xml,添加persistence-api
和changgou-common
的依赖,代码如下:
<dependencies>
<!--通用的common-->
<dependency>
<groupId>com.changgou</groupId>
<artifactId>changgou-common</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<!--每个工程都有Pojo,都需要用到该包对应的注解-->
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>persistence-api</artifactId>
<version>1.0</version>
<scope>compile</scope>
</dependency>
</dependencies>
3.7.2 微服务工程搭建
修改changgou-service的pom.xml引入changgou-common-db
的依赖,代码如下:
<!--依赖-->
<dependencies>
<dependency>
<groupId>com.changgou</groupId>
<artifactId>changgou-common-db</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
在changgou-service中创建changgou-service-goods ,pom.xml引入依赖
<?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>
<!--依赖-->
<dependencies>
<dependency>
<groupId>com.changgou</groupId>
<artifactId>changgou-service-goods-api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
在resources下创建配置文件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com.changgou.goods 包下创建启动类GoodsApplication,代码如下:
上图代码如下:
@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,用于扫描==Mapper==接口
启动changgou-service-goods
再访问<http://localhost:7001/>
效果如下: