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:cloud:适合刚接触微服务架构的初学者了解和学习微服务，主要集成了注册中心、服务网关、配置中心、熔断机制、应用监控。

License: MIT License

Dockerfile 3.52% Java 96.48%

spring-boot spring-cloud spring-cloud-learning eureka consul feign ribbon zuul gateway

spring-cloud-learning's Introduction

Spring-Cloud-Learning

README: English | 中文

spring-cloud-learning can be used as a project to learn microservices, and it's mainly contain service discovery, service gateway, configuration management, circuit breakers, application monitor.

Components
Getting Started
- Use directly (recommend)
- Use docker
Preview
Modules
Dependency Chart
Todo List
Collaborators
License

Components

To be supplemented...

Getting Started

Two methods will mainly introduced, but no matter what you need to clone the code.

$ git clone https://github.com/coderqianlq/spring-cloud-learning.git

Use directly (recommend)

You can use ide to import the project with maven, and use ide or use command line to start project.

$ mvn spring-boot:run

You can also package the code and run it.

$ java -jar xxx.jar

Use docker

First, you have to make sure you have installed docker and start docker server.

$ docker --version
Docker version 18.06.1-ce, build e68fc7a

Then, you need to enter each submodule and execute the docker building command.

$ cd eureka-server

$ mvn clean package -Pdocker docker:build

Next, return to the parent module and execute docker-compose command.

$ docker-compose up -d

Finally, you can open the registration center(default url: http://localhost:8761) to see if the service is registered successfully.

Preview

Modules

-	port	remarks
admin-dashboard	8040	Spring boot Admin Dashboard for monitor spring cloud services
api-gateway	9090	Service gateway(Zuul)
config-server	8504	if you change the port, you need also modify bootstrap.yml of service-customer.
consul-server	8502	Service discovery(Consul)
eureka-server	8761	Service discovery(Eureka)
gateway-server	8080	Service gateway(Gateway)
hystrix-dashboard	8050
service-customer	8200	Integrated multiple components, including Feign, Spring Cloud Config, Spring Cloud Stream, Spring Cloud Bus
service-producer	8100
turbine-server	8060
zipkin-server	9411	if you change the port, you need also modify bootstrap.yml of service-customer.

Dependency Chart

Spring Boot	Spring Cloud	Spring Boot Admin	Swagger2
2.1.5	Greenwich	2.1.6	2.7.0

Todo List

Split the module of service-customer.
Add the detailed usage of hystrix with turbine.
Update Spring Boot to 2.x and both Spring Cloud to Greenwich.
Add Spring Boot admin dashboard.
Use Spring Cloud Gateway replaces zuul as service gateway.

Collaborators

_Marveliu

_Joby1230

_wxaaaa

License

MIT © CoderQian

spring-cloud-learning's People

Stargazers

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Forkers

21759319 destinymoon 1105748319 tomdev2008 zhangqiaoqi588 marveliu brokenwatch1 heliu123 wxaaaa hwlsniper dewey00 lurker8 olivertanzy 994625905

spring-cloud-learning's Issues

通过注解的方式解决Mybatis别名问题时报错

在实体类上添加@alias注解进行别名，在项目启动时报错提示无法找到该类，如在User类上添加@alias("User")注解，在mapper中指定resultType="User"，项目启动报无法找到User类(can't find class User)。

Setup Airbrake for your Java application

Step 1: Install

Install option 1: Maven

Add the javabrake dependency through your IDE or directly to your pom.xml file:

<dependency>
  <groupId>io.airbrake</groupId>
  <artifactId>javabrake</artifactId>
  <version>0.1.6</version>
</dependency>

Install option 2: Gradle

Add javabrake to your Gradle dependencies:

compile 'io.airbrake:javabrake:0.1.6'

Install option 3: Ivy

Add javabrake to your Ivy dependencies:

<dependency org='io.airbrake' name='javabrake' rev='0.1.6'>
  <artifact name='javabrake' ext='pom'></artifact>
</dependency>

Step 2: Configure

Import the javabrake library and copy the three configuration lines into your
app to send all uncaught exceptions to Airbrake:

(You can find your project API KEY with your project's settings)

// Import the library:
import io.airbrake.javabrake.Notifier;

public class ExampleApp {
  public static void main(String[] args) {

    // Copy configuration lines:
    int projectId = <Your project ID>;
    String projectKey = "<Your project API KEY>";
    Notifier notifier = new Notifier(projectId, projectKey);
  }
}

Example of reporting a caught exception:

try {
  int i = 1/0;
} catch (ArithmeticException e) {
  notifier.report(e);
}

Visit our official GitHub repo for advanced information and integrations like log4j, log4j2, and logback.

通过配置类开启feign的hystrix服务不起作用

定义配置类设置feign.hystrix.enabled=true不起作用，配置类如下：
@configuration
@ConditionalOnClass({HystrixCommand.class, HystrixFeign.class})
public class FeignServerConfiguration {

@Bean
@Scope("prototype")
@ConditionalOnProperty(name = "feign.hystrix.enabled", matchIfMissing = true)
public Feign.Builder feignBuilder() {
    return Feign.builder();
}

}
目前是通过在配置文件中application.properties中添加feign.hystrix.enabled=true开启feign的hystrix服务。

执行报错: no main manifest attribute, in /eureka-server.jar

如题，实际操作是先执行maven clean package，再执行java -jar报错no main manifest attribute。

Mybatis插入数据返回主键为NULL的问题

/**
 * 插入用户，返回用户id  
 * 需要注意的是在mapper接口中不能使用@Param("")绑定传入实体参数，这样主键会绑定到新建的实体中。
 * 如@Param("user") UserEntity user主键会绑定到新建的实体，即getId() = null。
 *
 * @param user 用户实体
 * @return Long
 */
  Long insertUser(UserEntity user);

 // Long insertUser(@Param("user") UserEntity user) 使用@Param("")绑定传入实体参数，会使主键绑定到新建的实体中

<insert id="insertUser" parameterType="User">
    <selectKey keyProperty="id" order="BEFORE" resultType="java.lang.String">
        select replace(uuid(), '-', '') as id from dual
    </selectKey>
    insert into user(id, name, birth)
    values (#{id}, #{name}, #{birth})
</insert>