架构的搭建（一）

2024-01-13 23:11:16

一、简介

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

<?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.ghy</groupId>
    <artifactId>spring-cloud-alibaba</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>spring-cloud-alibaba</name>
    <packaging>pom</packaging>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud-alibaba.version>2.2.1.RELEASE</spring-cloud-alibaba.version>
    </properties>

    <modules>
        <module>spring-cloud-api</module>
        <module>spring-cloud-gateway</module>
        <module>spring-cloud-util</module>
        <module>spring-cloud-web</module>
        <module>spring-cloud-service</module>
    </modules>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.10.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <dependencies>
        <!--lombok，方便创建javaBean的一些方法-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <!--测试-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!--热部署插件-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring-cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.3.7.RELEASE</version>
                <configuration>
                    <mainClass>com.ghy.spring_cloud_alibaba.SpringCloudAlibabaApplication</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

spring-cloud-api的pom.xml文件

<?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">

   <parent>
       <groupId>com.ghy</groupId>
       <artifactId>spring-cloud-alibaba</artifactId>
       <version>0.0.1-SNAPSHOT</version>
   </parent>

    <modelVersion>4.0.0</modelVersion>
    <packaging>pom</packaging>
    <modules>
        <module>spring-cloud-goods-api</module>
    </modules>

    <artifactId>spring-cloud-api</artifactId>
    <description>所有数据库表对应的Bean和Feign接口</description>



    <dependencies>
        <!--MyBatis Plus-->
        <!--编写JavaBean会用到MyBatis Plus的相关注解，引入依赖防止程序编译
不通过-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.3.2</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>


</project>

spring-cloud-gateway的pom.xml文件

<?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">

    <parent>
        <groupId>com.ghy</groupId>
        <artifactId>spring-cloud-alibaba</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <modelVersion>4.0.0</modelVersion>
    <groupId>com.ghy</groupId>
    <artifactId>spring-cloud-gateway</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>spring-cloud-gateway</name>
    <description>这个是微服务的网关</description>

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.3.7.RELEASE</spring-boot.version>
    </properties>

    <dependencies>

    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.3.7.RELEASE</version>
                <configuration>
                    <mainClass>com.ghy.springcloudgateway.SpringCloudGatewayApplication</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

spring-cloud-service的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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <groupId>com.ghy</groupId>
        <artifactId>spring-cloud-alibaba</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>


    <modelVersion>4.0.0</modelVersion>
    <packaging>pom</packaging>

    <modules>
        <module>spring-cloud-goods-service</module>
    </modules>

    <artifactId>spring-cloud-service</artifactId>
    <description>所有业务类代码的父工程</description>



    <dependencies>
        <!--jar包依赖-->
        <dependency>
            <artifactId>spring-cloud-common</artifactId>
            <groupId>com.ghy</groupId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <!--工具包依赖-->
        <dependency>
            <artifactId>spring-cloud-service-dependency</artifactId>
            <groupId>com.ghy</groupId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
    </dependencies>

</project>

spring-cloud-util的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>spring-cloud-alibaba</artifactId>
        <groupId>com.ghy</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <packaging>pom</packaging>
    <artifactId>spring-cloud-util</artifactId>
    <description>
        所有工具工程管理
    </description>

    <name>spring-cloud-util</name>
    <!-- FIXME change it to the project‘s website -->
    <url>http://www.example.com</url>
    <modules>
        <module>spring-cloud-common</module>
        <module>spring-cloud-service-dependency</module>
    </modules>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
    </dependencies>


</project>

spring-cloud-web的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 https://maven.apache.org/xsd/maven-4.0.0.xsd">

    <parent>
        <artifactId>spring-cloud-alibaba</artifactId>
        <groupId>com.ghy</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <modelVersion>4.0.0</modelVersion>
    <packaging>pom</packaging>
    <artifactId>spring-cloud-web</artifactId>
    <description>管理涉及到页面渲染的工程</description>

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.3.7.RELEASE</spring-boot.version>
    </properties>

    <dependencies>

    </dependencies>





</project>

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

<?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>spring-cloud-util</artifactId>
        <groupId>com.ghy</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>spring-cloud-service-dependency</artifactId>
    <description>
        所有微服务工程公共依赖包、所有微服务工程公共配置类
    </description>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
    </properties>

    <dependencies>
        <!--web包-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!--MyBatis Plus-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.3.2</version>
        </dependency>

        <!--MySQL-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

        <!--Redis-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>

        <!--Nacos-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
    </dependencies>


</project>

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

<?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>spring-cloud-util</artifactId>
        <groupId>com.ghy</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>spring-cloud-common</artifactId>
    <!-- FIXME change it to the project‘s website -->
    <url>http://www.example.com</url>
    <description>
        工具工程
    </description>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

</project>

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<T> 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

<?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>spring-cloud-api</artifactId>
        <groupId>com.ghy</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <modelVersion>4.0.0</modelVersion>
    <artifactId>spring-cloud-goods-api</artifactId>
    <description>
        spring-cloud-goods对应的Api工程
    </description>

</project>

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

<?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">

    <parent>
        <groupId>com.ghy</groupId>
        <artifactId>spring-cloud-service</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>spring-cloud-goods-service</artifactId>
    <description>
        数据库的增删改查
    </description>

    <dependencies>
        <!--goods-api-->
        <dependency>
            <groupId>com.ghy</groupId>
            <artifactId>spring-cloud-goods-api</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
    </dependencies>
</project>

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<Brand> {
}

public interface BrandService extends IService<Brand> {

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

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

}

    /****
     * 条件查询
     * return List<Brand>
     */
    @Override
    public List<Brand> queryList(Brand brand) {
        //条件包装对象
        QueryWrapper<Brand> queryWrapper = new QueryWrapper<Brand>();
        //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<Brand>
     */
    @Override
    public Page<Brand> queryPageList(Brand brand, Long currentPage, Long size) {
        //条件包装对象
        QueryWrapper<Brand> queryWrapper = new QueryWrapper<Brand>();
        //根据name查询品牌
        queryWrapper.like("name",brand.getName());
        return brandMapper.selectPage(new Page<Brand>(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<List<Brand>> queryList(@RequestBody Brand brand){
        List<Brand> brands = brandService.queryList(brand);
        return RespResult.ok(brands);
    }

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