微服務接口的六種設計模式

1.使用RebbitMQ收集數據的原理是什麼？

採取第一種方式時, 使用的是Turbine來聚合多種服務 ,然後通過Dashboard圖形化管理界面來進行管理
採取第二種方式(RabbitMQ),使用的是RabbitMQ來對服務進行聚合然後將數據傳輸給Turbine最後發送給Dashboard圖形化管理界面來進行管理

2.1創建Consumer服務。

2.2修改POM文件添加相關座標

。

2.3修改POM文件，添加actuator啓動器，添加hystrix啓動器、hystrix-dashboard啓動器、

hystrix-stream啓動器、stream-rabbit啓動器。
<?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.bjsxt</groupId>
<artifactId>springcloud-eureka-consumer-ribbon-dashboard
-mq</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>springcloud-eureka-consumer</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.13.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEn
coding>
<project.reporting.outputEncoding>UTF-8</project.reporting.
outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.SR5</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-hystrix</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-hystrix-dashboard</artifac
tId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-netflix-hystrix-stream</artifactId
>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-stream-rabbit</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

2.4修改全局配文件，添加RabbitMQ配置。

spring.application.name=eureka-consumer-ribbon-dashboard
server.port=9010
#設置服務註冊中心地址，指向另一個註冊中心
eureka.client.serviceUrl.defaultZone=http://user:123456@eur
eka1:8761/eureka/,http://user:123456@eureka2:8761/eureka/
spring.rabbitmq.host=192.168.70.139
spring.rabbitmq.port=5672
spring.rabbitmq.username=oldlu
spring.rabbitmq.password=123456
spring.rabbitmq.virtualHost=/

2.5修改啓動類，開始HystrixDashboard。

@EnableCircuitBreaker //開啓熔斷器 斷路器
@EnableEurekaClient
@SpringBootApplication
@EnableHystrix
@EnableHystrixDashboard
public class ConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class,
args);
}

採用RebbitMQ收集數據監控-測試服務

3.1 @EnableTurbineStream註解的作用是什麼？

@EnableTurbineStream註解,用於啓動TurbineMQ

4.1創建Turbine服務。

4.2修改POM文件添加hystrix-stream啓動器、stream-rabbit啓動器。

<?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.bjsxt</groupId>
<artifactId>springcloud-eureka-consumer-turbine-mq</arti
factId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>springcloud-eureka-consumer</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.13.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEn
coding>
<project.reporting.outputEncoding>UTF-8</project.reporting.
outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.SR5</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-turbine-stream</artifactId
>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-stream-rabbit</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

4.3修改全局配置文件，添加RabbitMQ配置。

spring.application.name=eureka-consumer-hystrix-turbine
server.port=1002
#設置服務註冊中心地址，指向另一個註冊中心
eureka.client.serviceUrl.defaultZone=http://user:123456@eur
eka1:8761/eureka/,http://user:123456@eureka2:8761/eureka/
spring.rabbitmq.host=192.168.70.139
spring.rabbitmq.port=5672
spring.rabbitmq.username=oldlu
spring.rabbitmq.password=123456
spring.rabbitmq.virtualHost=/

4.4修改啓動類，開啓TurbineStream。

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

如何設計微服務作業題

5.1微服務中有幾種常見的設計模式？

5.2每種設計模式的的特點是什麼？

代理鏈條設計模式-數據庫設計

6.1創建Users表。

6.2創建product表。

6.3創建Orders表。

6.4創建Trade表。

generatorSqlmapCustom工具使用

7.1通過generatorSqlmapCustom工具生成MyBatis的映射配置文件，接口，實體類。

創建product服務-創建項目

8.1創建Product服務。

8.2需改POM文件添加相關座標。

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.11.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.bjsxt</groupId>
    <artifactId>30egoproductprovider</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>30egoproductprovider</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.SR4</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!--數據庫部分-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <!--添加ego -peovider_service依賴-->
        <dependency>
            <groupId>com.bjsxt</groupId>
            <artifactId>31egoproductservice</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
    </dependencies>

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

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>

        <!--配置資源拷貝插件-->
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.yml</include>
                    <include>**/*.properties</include>
                </includes>
            </resource>
        </resources>
    </build>


</project>

8.3修改全局配置文件，添加相關配置。

package com.bjsxt;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

@EnableEurekaClient
@MapperScan("com.bjsxt.mapper")
@SpringBootApplication
public class ApplicationProviderProduct {
    public static void main(String[] args) {
        SpringApplication.run(ApplicationProviderProduct.class, args);
    }

}

8.4創建Product-Service服務。

9.1將generatorSqlmapCustom工具生成的接口、映射配置文件、實體類，添加到項目中。

創建product服務-添加查詢所有商品業務

10.1在Product-Service項目中添加一個ProductService接口。

10.2 Product-Provider服務中添加ProductServiceImpl類。

10.3修改Product-provider啓動類。

10.4訪問服務查看結果。

創建user服務-創建項目

11.1創建User-Provider服務。

11.2 修改User-Provider服務的pom文件添加相關座標。

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.11.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.bjsxt</groupId>
    <artifactId>30egoproductprovider</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>30egoproductprovider</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.SR4</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!--數據庫部分-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <!--添加ego -peovider_service依賴-->
        <dependency>
            <groupId>com.bjsxt</groupId>
            <artifactId>31egoproductservice</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
    </dependencies>

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

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>

        <!--配置資源拷貝插件-->
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.yml</include>
                    <include>**/*.properties</include>
                </includes>
            </resource>
        </resources>
    </build>


</project>

11.3 修改User-Provider服務的配置文件添加服務相關配置。

package com.bjsxt;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

@EnableEurekaClient
@MapperScan("com.bjsxt.mapper")
@SpringBootApplication
public class ApplicationProviderProduct {
    public static void main(String[] args) {
        SpringApplication.run(ApplicationProviderProduct.class, args);
    }

}

創建user服務-添加mybaits組件

12.1創建User-Service服務。

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
  PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
  "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>
   <context id="testTables" targetRuntime="MyBatis3">
      <commentGenerator>
         <!-- 是否去除自動生成的註釋 true：是 ： false:否 -->
         <property name="suppressAllComments" value="true" />
      </commentGenerator>
      <!--數據庫連接的信息：驅動類、連接地址、用戶名、密碼 -->
      <jdbcConnection driverClass="com.mysql.jdbc.Driver"
         connectionURL="jdbc:mysql://localhost:3306/test" userId="root" password="root">
      </jdbcConnection>
      <!-- 默認false，把JDBC DECIMAL 和 NUMERIC 類型解析爲 Integer，爲 true時把JDBC DECIMAL 和 
         NUMERIC 類型解析爲java.math.BigDecimal -->
      <javaTypeResolver>
         <property name="forceBigDecimals" value="false" />
      </javaTypeResolver>

      <!-- targetProject:生成PO類的位置 -->
      <javaModelGenerator targetPackage="com.bjsxt.pojo"
         targetProject=".\src\main\java">
         <!-- enableSubPackages:是否讓schema作爲包的後綴 -->
         <property name="enableSubPackages" value="false" />
         <!-- 從數據庫返回的值被清理前後的空格 -->
         <property name="trimStrings" value="true" />
      </javaModelGenerator>
        <!-- targetProject:mapper映射文件生成的位置 -->
      <sqlMapGenerator targetPackage="com.bjsxt.mapper"
         targetProject=".\src\main\java">
         <!-- enableSubPackages:是否讓schema作爲包的後綴 -->
         <property name="enableSubPackages" value="false" />
      </sqlMapGenerator>
      <!-- targetPackage：mapper接口生成的位置 -->
      <javaClientGenerator type="XMLMAPPER"
         targetPackage="com.bjsxt.mapper"
         targetProject=".\src\main\java">
         <!-- enableSubPackages:是否讓schema作爲包的後綴 -->
         <property name="enableSubPackages" value="false" />
      </javaClientGenerator>
      <!-- 指定數據庫表 -->
      <table schema="" tableName="user"></table>
   </context>
</generatorConfiguration>

12.2 將工具生成Pojo、Mpper、映射配置文件，添加到相關項目當中。

創建user服務-添加用戶登錄業務

13.1在User-service項目中添加一個UserService接口。

package com.bjsxt.service;

import com.bjsxt.pojo.User;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

@RequestMapping("/user")
public interface ServiceUser {

    @RequestMapping(value = "/login",method = RequestMethod.GET)
    public User  loginUser(@RequestParam("userName") String userName,@RequestParam("password") String password);
}

13.2在User-provider服務中添加UserServiceImpl類。

package com.bjsxt.service;

import com.bjsxt.mapper.UserMapper;
import com.bjsxt.pojo.User;
import com.bjsxt.pojo.UserExample;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserService {

    @Autowired
    private UserMapper userMapper;


    public  User   userLoginService(String  username,String password){

        UserExample example=new UserExample();
        UserExample.Criteria criteria = example.createCriteria();
        criteria.andUserNameEqualTo(username);
        criteria.andPasswordEqualTo(password);
        List<User> list = this.userMapper.selectByExample(example);

        if(list!=null && list.size()>0){
           return list.get(0);
        }else {
            return null;
        }
    }

}

13.3在User-Provider服務中添加controller。

package com.bjsxt.controller;

import com.bjsxt.pojo.User;
import com.bjsxt.service.ServiceUser;
import com.bjsxt.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class UserController implements ServiceUser {

    @Autowired
    private UserService userService;
    @Override
    public User loginUser(String userName, String password) {
        User user = this.userService.userLoginService(userName, password);
        return user;
    }
}

13.4修改User-Provider啓動類。

package com.bjsxt;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

@EnableEurekaClient
@SpringBootApplication
@MapperScan("com.bjsxt.mapper")
public class ApplicationUserProvider {

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

}

13.5 訪問服務，測試結果。

用戶登錄，調用user-provider實現登錄。
查詢商品：調用product-provider瀏覽商品
下訂單：接受到請求後創建訂單對象，填入基本信息，同時創建trade對象，設置關聯關係。
保存值數據庫，在返回訂單列表
支付：接受到請求後根據用戶查找到未支付的訂單order，在根據訂單中的tradeid獲取trade對象，修改trade和order信息。更新數據庫，上述步驟在trade-provider中實現，創建一個接口繼承orderserviceapi，使用feign調用。
注：需要在各個provider中添加方法。
接受參數是一定要是用 使用@RequsetParam註解，且一定要加參數。