Inaction Mall _ create micro Goods Services

Since it is a whole category of electricity supplier shopping platform, so naturally it is the core product. So we have to build the first service, merchandise is micro-services. Which will contain content management for a series of related merchandise, including:

Category Management
Brand Management
Product Specifications Management
Commodity Management
Inventory Management

1. micro-structure services

Because associated with the category of goods, our engineering named leyou-item.

It should be noted that our leyou-item is a microblogging service, then the future there will certainly be other systems need to call the interface services provided in the data acquisition interface, but also need the corresponding entity class to encapsulate, and therefore will certainly use an interface to the associated entity class.

So here we need to use polymerization engineering, interfaces and related entity classes to be offered into independent sub-projects in the future when others cited only need to know the coordinates can be.

We will create two sub-projects in leyou-item in:

leyou-item-interface: main interfaces and related entities like exposed outside
leyou-item-service: all the business logic and internal interfaces

Call the relationship as shown:

2.leyou-item

Still use maven build:

Save location:

Because it is polymerisation project, so the way to package the project pom ( check, perhaps automatically generated )

<! - are packaged as POM -> 
<Packaging> POM </ Packaging>

3.leyou-item-interface

Right-click on leyou-item projects, select new -> module:

Still use maven to build, pay attention to the parent project is leyou-item:

Note : The directory structure to save leyou-itemunder the leyou-item-interfacedirectory:

Click Finish.

At this point the project structure:

4.leyou-item-service

And leyou-item-interfacesimilar, we choose leyou-itemthe right, the new module, and then fill out the project information:

Fill in the storage location

Click Finish.

The entire structure microService

as the picture shows:

We opened leyou-item of pom view, you will find leyou-item-interface and leyou-item-service have become the module:

You can delete the src directory leyou-item project

6. Add dependence

Next we have to leyou-item-serviceadd dependencies:

Think about what we need?

Eureka client
web launcher
mybatis starter
Universal Launcher mapper
Paging Assistant Starter
Connection pooling, we use the default Hykira
mysql driver
Do not forget, we also need to own ly-item-interfacethe entity classes

These dependencies, we top-level parent project: Well leyou has been added in. So you can direct introduction:

    <dependencies>
        <!-- web启动器 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- eureka客户端 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <!-- mybatis的启动器 -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</ artifactId> 
        <-! Universal mapper Launcher ->
        </ dependency>
        <dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper-spring-boot-starter</artifactId>
        </dependency>
        <!-- 分页助手启动器 -->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
        </dependency>
        <!-- jdbc启动器 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <!-- mysql驱动 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!--wuwei-item-interface实体类-->
        <dependency>
            <groupId>com.wuwei.item.interface</groupId>
            <artifactId>wuwei-item-interface</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>
        <!-- springboot检测服务启动器 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
    </dependencies>

What leyou-item-interface needs we do not know, so the first matter. After what needs to rely, reintroduction.

7. Write the startup configuration

Throughout leyou-item工程, only leyou-item-serviceit needs to start. So where to start writing class:

/*@SpringBootApplication
//eureka客户端
@EnableDiscoveryClient*/
@SpringBootApplication
@EnableDiscoveryClient
public class WuweiItemServiceApplication {

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

Then in the global properties file:

# Modify the port number 
Server: 
  Port: 8081 
# modify the program name 
the Spring: 
  the Application: 
    name: Item - Service 
  # need to connect to database configuration jdbc 
  the DataSource: 
    url: jdbc: MySQL: /// Wuwei 
    username: root 
    password: root 
    Hikari: 
      max - Lifetime: 28.83 million # a connection life duration (ms), time-out and is not in use were released (Retired), default: 30 minutes, set a specific database 30-second timeout length less, with reference to MySQL wait_timeout parameters (Show Variables like ' timeout%% ' ;) 
      maximum -pool-size: . 9 # connection pool maximum number of connections allowed. Default: 10 ; Recommended formula: ((core_count * 2 ) +effective_spindle_count) 
path #eureka service side of the 
Eureka: 
  Client: 
    Service - url: 
      defaultzone: HTTP: // localhost: 10086 / Eureka 
  instance: 
    Lease -renewal-interval- in -seconds: 5 # 5 seconds to send a heartbeat 
    Lease -expiration- duration- in -seconds: 10 # 10 seconds the sending expired

8. Add goods micro-service routing rules

Since the micro goods and services has been created, is sure to add routing rules to Zuul, we do not use the default routing rules.

Modify leyou-gateway project application.yml profile:

Zuul: 
  prefix: / API # routing path prefix 
  routes: 
    Item -service: / Item / * * # commodity to map the path of micro-services

9. Start test

We were started: leyou-registry, leyou-gateway, leyou-item-service

View Eureka panel:

10. Test routing rules

To test whether the flow routing rules, we are not required to write a controller interface item-service as well?

In fact, do not need, SpringBoot provides a dependent: actuator

As long as we rely actuator is added, it will generate a series of access interface for us:

/info
/health
/refresh
...

Add rely :( already added over)

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

After restarting access Eureka console:

Hover over the item-service, will show an address:

This is the interface provided by the actuator, we click access to:

Because we do not add information, it is an empty json, but it is certain that: we have access to the item-service.

Next we try to access through the route, according to the routing rules, we need to access the address is:

http://127.0.0.1:10010/api/item/actuator/info

11. Universal tool module

Some tools or generic content of the agreement, we hope to share each service, you need to create a tool modules:leyou-common

Right leyou project using maven to build the module:

location information:

structure:

It is not required coding.