架构的搭建（一）

一、简介

从安小说网 https://www.sixu.info

这次项目是准备做一个电商项目，采用当前主流的微服务技术，技术栈是SpringCloud Alibaba，此次设计思路也很简单，当前端服务请求过来时先经过四层负载LVS,用过LVS的朋友应该知道LVS的并发量相对来说还是比较高的，可以达到400W左右；经过LVS后，LVS会把服务请求发送给七层负载Nginx集群服务，Nginx在后面文章也有说明，可以加载静态资源什么的，Nginx的抗压能力也是非常高的，记得他并发量好像是可以达到5到6W左右吧。Nginx收到请求后会把请求路由到后端服务Gatway网关路由，网关虽然是做分发服务的，但其实在网关这层可以做的东西是很多的，比喻：鉴权、限流、负载分发、拦截....;经过网关后，服务请求就会路由到具体的业务服务代码；这就是整体的大体设计；

二、项目搭建

 

 

 spring-cloud-api:存放所有与数据库对应的实体类，以及远程调用的feign接口

spring-cloud-goods-api:与spring-cloud-server对应的API工程

spring-cloud-gateway:所有的微服务网关工程，存放不同服务的微服务网关或者微服务网关集群

spring-cloud-service:所有微服务的业务模块工程

spring-cloud-util:所有工具工程，这里面又可以拆分两块，一块是微服务依赖包；另一块是普通工具包

spring-cloud-web:所有页面操作的工程

2.1、父工程搭建

spring-cloud-alibaba的pom.xml

"1.0" encoding="UTF-8"?>
"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">
    4.0.0
    com.ghy
    spring-cloud-alibaba
    0.0.1-SNAPSHOT
    spring-cloud-alibaba
    pom
    Demo project for Spring Boot

    
        1.8
        2.2.1.RELEASE
    

    
        spring-cloud-api
        spring-cloud-gateway
        spring-cloud-util
        spring-cloud-web
        spring-cloud-service
    

    
        org.springframework.boot
        spring-boot-starter-parent
        2.2.10.RELEASE
         
    

    
        
        
            org.projectlombok
            lombok
            true
        
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
            
                
                    org.junit.vintage
                    junit-vintage-engine
                
            
        
        
        
            org.springframework.boot
            spring-boot-devtools
            runtime
            true
        
    

    
        
            
                com.alibaba.cloud
                spring-cloud-alibaba-dependencies
                ${spring-cloud-alibaba.version}
                pom
                import
            
        
    

    
        
            
                org.apache.maven.plugins
                maven-compiler-plugin
                3.8.1
                
                    1.8
                    1.8
                    UTF-8
                
            
            
                org.springframework.boot
                spring-boot-maven-plugin
                2.3.7.RELEASE
                
                    com.ghy.spring_cloud_alibaba.SpringCloudAlibabaApplication
                
                
                    
                        repackage
                        
                            repackage
                        
                    
                
            
        
    

spring-cloud-api的pom.xml文件

"1.0" encoding="UTF-8"?>
"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">

   
       com.ghy
       spring-cloud-alibaba
       0.0.1-SNAPSHOT
   

    4.0.0
    pom
    
        spring-cloud-goods-api
    

    spring-cloud-api
    所有数据库表对应的Bean和Feign接口



    
        
        
        
            com.baomidou
            mybatis-plus-boot-starter
            3.3.2
            provided
        
    

spring-cloud-gateway的pom.xml文件

"1.0" encoding="UTF-8"?>
"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">

    
        com.ghy
        spring-cloud-alibaba
        0.0.1-SNAPSHOT
    

    4.0.0
    com.ghy
    spring-cloud-gateway
    0.0.1-SNAPSHOT
    spring-cloud-gateway
    这个是微服务的网关

    
        1.8
        UTF-8
        UTF-8
        2.3.7.RELEASE
    

    

    

    
        
            
                org.springframework.boot
                spring-boot-dependencies
                ${spring-boot.version}
                pom
                import
            
        
    

    
        
            
                org.apache.maven.plugins
                maven-compiler-plugin
                3.8.1
                
                    1.8
                    1.8
                    UTF-8
                
            
            
                org.springframework.boot
                spring-boot-maven-plugin
                2.3.7.RELEASE
                
                    com.ghy.springcloudgateway.SpringCloudGatewayApplication
                
                
                    
                        repackage
                        
                            repackage
                        
                    
                
            
        
    

spring-cloud-service的pom.xml

"1.0" encoding="UTF-8"?>
"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">
    
        com.ghy
        spring-cloud-alibaba
        0.0.1-SNAPSHOT
    


    4.0.0
    pom

    
        spring-cloud-goods-service
    

    spring-cloud-service
    所有业务类代码的父工程



    
        
        
            spring-cloud-common
            com.ghy
            0.0.1-SNAPSHOT
        
        
        
            spring-cloud-service-dependency
            com.ghy
            0.0.1-SNAPSHOT
        
    

spring-cloud-util的pom.xml

"1.0" encoding="UTF-8"?>

"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">
    
        spring-cloud-alibaba
        com.ghy
        0.0.1-SNAPSHOT
    
    4.0.0
    pom
    spring-cloud-util
    
        所有工具工程管理
    

    spring-cloud-util
    
    http://www.example.com
    
        spring-cloud-common
        spring-cloud-service-dependency
    

    
        UTF-8
        1.7
        1.7
    

    
        
            junit
            junit
            4.11
            test
        
    

spring-cloud-web的pom.xml

"1.0" encoding="UTF-8"?>
"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">

    
        spring-cloud-alibaba
        com.ghy
        0.0.1-SNAPSHOT
    

    4.0.0
    pom
    spring-cloud-web
    管理涉及到页面渲染的工程

    
        1.8
        UTF-8
        UTF-8
        2.3.7.RELEASE
    

    

    

2.2、公共工程创建

spring-cloud-service-dependency是所有server微服务可能要用到的工具包，spring-cloud-service-dependency的pom.xml文件

"1.0" encoding="UTF-8"?>

"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">
    
        spring-cloud-util
        com.ghy
        0.0.1-SNAPSHOT
    
    4.0.0
    spring-cloud-service-dependency
    
        所有微服务工程公共依赖包、所有微服务工程公共配置类
    

    
        UTF-8
        1.7
        1.7
    

    
        
        
            org.springframework.boot
            spring-boot-starter-web
        

        
        
            com.baomidou
            mybatis-plus-boot-starter
            3.3.2
        

        
        
            mysql
            mysql-connector-java
            runtime
        

        
        
            org.springframework.boot
            spring-boot-starter-data-redis
        

        
        
            com.alibaba.cloud
            spring-cloud-starter-alibaba-nacos-config
        
        
            com.alibaba.cloud
            spring-cloud-starter-alibaba-nacos-discovery
        
    

在spring-cloud-service-dependency工程中建立一个分页拦截器StartConfig类

@Configuration
public class StartConfig {

    /****
     * 分页拦截器
     */
    @Bean
    public PaginationInterceptor paginationInterceptor(){
        PaginationInterceptor pageInterceptor = new PaginationInterceptor();
        // 设置数据类型
        pageInterceptor.setDbType(DbType.MYSQL);
        return pageInterceptor;
    }
}

 spring-cloud-common是所有应用的基础包，它的pom.xml文件如下

"1.0" encoding="UTF-8"?>

"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">
    
        spring-cloud-util
        com.ghy
        0.0.1-SNAPSHOT
    
    4.0.0
    spring-cloud-common
    
    http://www.example.com
    
        工具工程
    

    
        UTF-8
        1.7
        1.7
    

    
        
            junit
            junit
            4.11
            test
        
    

在此工程中建立一个错误码类RespCode类

public enum RespCode {
    SUCCESS(20000, "操作成功"),
    ERROR(50000, "操作失败"),
    SYSTEM_ERROR(50001, "系统错误");

    private Integer code;
    private String message;

    RespCode(Integer code, String message) {
        this.code = code;
        this.message = message;
    }
    RespCode() {
    }
    public Integer getCode() {
        return code;
    }

    public void setCode(Integer code) {
        this.code = code;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }
}

RespResult类

public class RespResult implements Serializable {

    //响应数据结果集
    private T data;

    /**
     * 状态码
     * 20000 操作成功
     * 50000 操作失败
     */
    private Integer code;

    /***S
     * 响应信息
     */
    private String message;

    public RespResult() {
    }

    public RespResult(RespCode resultCode) {
        this.code = resultCode.getCode();
        this.message = resultCode.getMessage();
    }

    public RespResult(T data, RespCode resultCode) {
        this.data = data;
        this.code = resultCode.getCode();
        this.message = resultCode.getMessage();
    }
    public static RespResult ok() {
        return new RespResult(null, RespCode.SUCCESS);
    }

    public static RespResult ok(Object data) {
        return new RespResult(data, RespCode.SUCCESS);
    }

    public static RespResult error() {
        return new RespResult(null, RespCode.ERROR);
    }

    public static RespResult error(String message) {
        return secByError(RespCode.ERROR.getCode(),message);
    }

    //自定义异常
    public static RespResult secByError(Integer code,String message) {
        RespResult err = new RespResult();
        err.setCode(code);
        err.setMessage(message);
        return err;
    }

    public static RespResult error(RespCode resultCode) {
        return new RespResult(resultCode);
    }

    public T getData() {
        return data;
    }

    public void setData(T data) {
        this.data = data;
    }

    public Integer getCode() {
        return code;
    }

    public void setCode(Integer code) {
        this.code = code;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }
}

3、品牌管理工能的创建

品牌表的数据库设计如下：

CREATE TABLE `brand` ( 
`id` int(11) NOT NULL AUTO_INCREMENT COMMENT '品牌id', 
`name` varchar(100) NOT NULL COMMENT '品牌名称',
`image` varchar(1000) DEFAULT '' COMMENT '品牌图片地址',
`initial` varchar(1) DEFAULT '' COMMENT '品牌的首字母', 
`sort` int(11) DEFAULT NULL COMMENT '排序', 
PRIMARY KEY (`id`) ) 
ENGINE=InnoDB AUTO_INCREMENT=325475 DEFAULT CHARSET=utf8 COMMENT='品牌表';

商品表设计完后，就是要写品牌的工程及创建他的实体类，下面创建spring-cloud-goods-api工程，他的pom.xml文件如下

"1.0" encoding="UTF-8"?>

"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">
    
        spring-cloud-api
        com.ghy
        0.0.1-SNAPSHOT
    

    4.0.0
    spring-cloud-goods-api
    
        spring-cloud-goods对应的Api工程
    

然后创建他的实体类

@Data
@NoArgsConstructor
@AllArgsConstructor
@TableName(value = "brand")
public class Brand {

    // ID（主键）  @TableId:标记当前属性为主键列对应的属性
    @TableId(type = IdType.AUTO)
    private Integer id;
    // 品牌名字
    private String name;
    // 品牌图片
    private String image;
    // 品牌首字母
    private String initial;
    // 排序
    private Integer sort;
}

然后上创建他的业务工程spring-cloud-goods-service工程，他的pom.xml文件如下

"1.0" encoding="UTF-8"?>
"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">

    
        com.ghy
        spring-cloud-service
        0.0.1-SNAPSHOT
    
    4.0.0
    spring-cloud-goods-service
    
        数据库的增删改查
    

    
        
        
            com.ghy
            spring-cloud-goods-api
            0.0.1-SNAPSHOT
        
    

yml文件

server:
  port: 8081
spring:
  application:
    name: spring-cloud-goods-service
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://192.168.32.32:3306/shop_goods?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
    username: root
    password: root
  cloud:
    nacos:
      config:
        file-extension: yaml
        server-addr: 192.168.32.32:8848
      discovery:
        #Nacos的注册地址
        server-addr: 192.168.32.32:8848
# ====================MybatisPlus====================
mybatis-plus:
  mapper-locations: mapper/*.xml
  type-aliases-package: com.ghy.springcloudgoodsapi.*.entity
  configuration:
    map-underscore-to-camel-case: true  #驼峰转换
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl   #日志查看

#日志配置
logging:
  pattern:
    console: "%msg%n"

BrandMapper类

public interface BrandMapper extends BaseMapper {
}

public interface BrandService extends IService {

    /****
     * 条件查询
     * return List
     */
    List queryList(Brand brand);

    /****
     * 条件分页查询
     * return Page
     */
    Page queryPageList(Brand brand, Long currentPage, Long size);

}

    /****
     * 条件查询
     * return List
     */
    @Override
    public List queryList(Brand brand) {
        //条件包装对象
        QueryWrapper queryWrapper = new QueryWrapper();
        //根据name查询品牌
        queryWrapper.like("name",brand.getName());

        //根据initial查询
        queryWrapper.eq("initial",brand.getInitial());
        return brandMapper.selectList(queryWrapper);
    }

    /****
     * 条件分页查询
     * return Page
     */
    @Override
    public Page queryPageList(Brand brand, Long currentPage, Long size) {
        //条件包装对象
        QueryWrapper queryWrapper = new QueryWrapper();
        //根据name查询品牌
        queryWrapper.like("name",brand.getName());
        return brandMapper.selectPage(new Page(currentPage,size),queryWrapper);
    }
}

@RestController
@RequestMapping(value = "/brand")
public class BrandController {

    @Autowired
    private BrandService brandService;

    /****
     * 增加方法
     */
    @PostMapping
    public RespResult add(@RequestBody Brand brand){
        brandService.save(brand);
        return RespResult.ok();
    }

    /****
     * 修改方法
     */
    @PutMapping
    public RespResult update(@RequestBody Brand brand){
        brandService.updateById(brand);
        return RespResult.ok();
    }

    /****
     * 删除方法
     */
    @DeleteMapping("/{id}")
    public RespResult delete(@PathVariable(value = "id")String id){
        brandService.removeById(id);
        return RespResult.ok();
    }

    /****
     * 条件查询
     */
    @PostMapping(value = "/search")
    public RespResult> queryList(@RequestBody Brand brand){
        List brands = brandService.queryList(brand);
        return RespResult.ok(brands);
    }

    /****
     * 条件查询
     */
    @PostMapping(value = "/search/{page}/{size}")
    public RespResult> queryPageList(
            @PathVariable(value = "page")Long page,
            @PathVariable(value = "size")Long size,
            @RequestBody Brand brand){
        Page pageInfo = brandService.queryPageList(brand,page,size);
        return RespResult.ok(pageInfo);
    }
}

这样工程就创建完成了

 

 

 

 

 

 

 

 

 

 git源码地址：https://gitee.com/TongHuaShuShuoWoDeJieJu/spring-cloud-alibaba.git