微服务接口的六种设计模式

1.使用RebbitMQ收集数据的原理是什么？

采取第一种方式时, 使用的是Turbine来聚合多种服务 ,然后通过Dashboard图形化管理界面来进行管理
采取第二种方式(RabbitMQ),使用的是RabbitMQ来对服务进行聚合然后将数据传输给Turbine最后发送给Dashboard图形化管理界面来进行管理

2.1创建Consumer服务。

2.2修改POM文件添加相关座标

。

2.3修改POM文件，添加actuator启动器，添加hystrix启动器、hystrix-dashboard启动器、

hystrix-stream启动器、stream-rabbit启动器。
<?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
#设置服务注册中心地址，指向另一个注册中心
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修改启动类，开始HystrixDashboard。

@EnableCircuitBreaker //开启熔断器 断路器
@EnableEurekaClient
@SpringBootApplication
@EnableHystrix
@EnableHystrixDashboard
public class ConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class,
args);
}

采用RebbitMQ收集数据监控-测试服务

3.1 @EnableTurbineStream注解的作用是什么？

@EnableTurbineStream注解,用于启动TurbineMQ

4.1创建Turbine服务。

4.2修改POM文件添加hystrix-stream启动器、stream-rabbit启动器。

<?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
#设置服务注册中心地址，指向另一个注册中心
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修改启动类，开启TurbineStream。

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

如何设计微服务作业题

5.1微服务中有几种常见的设计模式？

5.2每种设计模式的的特点是什么？

代理链条设计模式-数据库设计

6.1创建Users表。

6.2创建product表。

6.3创建Orders表。

6.4创建Trade表。

generatorSqlmapCustom工具使用

7.1通过generatorSqlmapCustom工具生成MyBatis的映射配置文件，接口，实体类。

创建product服务-创建项目

8.1创建Product服务。

8.2需改POM文件添加相关座标。

<?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>

        <!--数据库部分-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <!--添加ego -peovider_service依赖-->
        <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>

        <!--配置资源拷贝插件-->
        <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，添加相关配置。

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创建Product-Service服务。

9.1将generatorSqlmapCustom工具生成的接口、映射配置文件、实体类，添加到项目中。

创建product服务-添加查询所有商品业务

10.1在Product-Service项目中添加一个ProductService接口。

10.2 Product-Provider服务中添加ProductServiceImpl类。

10.3修改Product-provider启动类。

10.4访问服务查看结果。

创建user服务-创建项目

11.1创建User-Provider服务。

11.2 修改User-Provider服务的pom文件添加相关座标。

<?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>

        <!--数据库部分-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <!--添加ego -peovider_service依赖-->
        <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>

        <!--配置资源拷贝插件-->
        <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服务的配置文件添加服务相关配置。

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);
    }

}

创建user服务-添加mybaits组件

12.1创建User-Service服务。

<?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>
         <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
         <property name="suppressAllComments" value="true" />
      </commentGenerator>
      <!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->
      <jdbcConnection driverClass="com.mysql.jdbc.Driver"
         connectionURL="jdbc:mysql://localhost:3306/test" userId="root" password="root">
      </jdbcConnection>
      <!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer，为 true时把JDBC DECIMAL 和 
         NUMERIC 类型解析为java.math.BigDecimal -->
      <javaTypeResolver>
         <property name="forceBigDecimals" value="false" />
      </javaTypeResolver>

      <!-- targetProject:生成PO类的位置 -->
      <javaModelGenerator targetPackage="com.bjsxt.pojo"
         targetProject=".\src\main\java">
         <!-- enableSubPackages:是否让schema作为包的后缀 -->
         <property name="enableSubPackages" value="false" />
         <!-- 从数据库返回的值被清理前后的空格 -->
         <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:是否让schema作为包的后缀 -->
         <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:是否让schema作为包的后缀 -->
         <property name="enableSubPackages" value="false" />
      </javaClientGenerator>
      <!-- 指定数据库表 -->
      <table schema="" tableName="user"></table>
   </context>
</generatorConfiguration>

12.2 将工具生成Pojo、Mpper、映射配置文件，添加到相关项目当中。

创建user服务-添加用户登录业务

13.1在User-service项目中添加一个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服务中添加UserServiceImpl类。

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服务中添加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启动类。

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 访问服务，测试结果。

用户登录，调用user-provider实现登录。
查询商品：调用product-provider浏览商品
下订单：接受到请求后创建订单对象，填入基本信息，同时创建trade对象，设置关联关系。
保存值数据库，在返回订单列表
支付：接受到请求后根据用户查找到未支付的订单order，在根据订单中的tradeid获取trade对象，修改trade和order信息。更新数据库，上述步骤在trade-provider中实现，创建一个接口继承orderserviceapi，使用feign调用。
注：需要在各个provider中添加方法。
接受参数是一定要是用 使用@RequsetParam注解，且一定要加参数。